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author | Martin Liska <mliska@suse.cz> | 2022-01-14 16:56:44 +0100 |
---|---|---|
committer | Martin Liska <mliska@suse.cz> | 2022-01-17 22:12:04 +0100 |
commit | 5c69acb32329d49e58c26fa41ae74229a52b9106 (patch) | |
tree | ddb05f9d73afb6f998457d2ac4b720e3b3b60483 /gcc/dwarf2cfi.c | |
parent | 490e23032baaece71f2ec09fa1805064b150fbc2 (diff) | |
download | gcc-5c69acb32329d49e58c26fa41ae74229a52b9106.zip gcc-5c69acb32329d49e58c26fa41ae74229a52b9106.tar.gz gcc-5c69acb32329d49e58c26fa41ae74229a52b9106.tar.bz2 |
Rename .c files to .cc files.
gcc/ada/ChangeLog:
* adadecode.c: Moved to...
* adadecode.cc: ...here.
* affinity.c: Moved to...
* affinity.cc: ...here.
* argv-lynxos178-raven-cert.c: Moved to...
* argv-lynxos178-raven-cert.cc: ...here.
* argv.c: Moved to...
* argv.cc: ...here.
* aux-io.c: Moved to...
* aux-io.cc: ...here.
* cio.c: Moved to...
* cio.cc: ...here.
* cstreams.c: Moved to...
* cstreams.cc: ...here.
* env.c: Moved to...
* env.cc: ...here.
* exit.c: Moved to...
* exit.cc: ...here.
* expect.c: Moved to...
* expect.cc: ...here.
* final.c: Moved to...
* final.cc: ...here.
* gcc-interface/cuintp.c: Moved to...
* gcc-interface/cuintp.cc: ...here.
* gcc-interface/decl.c: Moved to...
* gcc-interface/decl.cc: ...here.
* gcc-interface/misc.c: Moved to...
* gcc-interface/misc.cc: ...here.
* gcc-interface/targtyps.c: Moved to...
* gcc-interface/targtyps.cc: ...here.
* gcc-interface/trans.c: Moved to...
* gcc-interface/trans.cc: ...here.
* gcc-interface/utils.c: Moved to...
* gcc-interface/utils.cc: ...here.
* gcc-interface/utils2.c: Moved to...
* gcc-interface/utils2.cc: ...here.
* init.c: Moved to...
* init.cc: ...here.
* initialize.c: Moved to...
* initialize.cc: ...here.
* libgnarl/thread.c: Moved to...
* libgnarl/thread.cc: ...here.
* link.c: Moved to...
* link.cc: ...here.
* locales.c: Moved to...
* locales.cc: ...here.
* mkdir.c: Moved to...
* mkdir.cc: ...here.
* raise.c: Moved to...
* raise.cc: ...here.
* rtfinal.c: Moved to...
* rtfinal.cc: ...here.
* rtinit.c: Moved to...
* rtinit.cc: ...here.
* seh_init.c: Moved to...
* seh_init.cc: ...here.
* sigtramp-armdroid.c: Moved to...
* sigtramp-armdroid.cc: ...here.
* sigtramp-ios.c: Moved to...
* sigtramp-ios.cc: ...here.
* sigtramp-qnx.c: Moved to...
* sigtramp-qnx.cc: ...here.
* sigtramp-vxworks.c: Moved to...
* sigtramp-vxworks.cc: ...here.
* socket.c: Moved to...
* socket.cc: ...here.
* tracebak.c: Moved to...
* tracebak.cc: ...here.
* version.c: Moved to...
* version.cc: ...here.
* vx_stack_info.c: Moved to...
* vx_stack_info.cc: ...here.
gcc/ChangeLog:
* adjust-alignment.c: Moved to...
* adjust-alignment.cc: ...here.
* alias.c: Moved to...
* alias.cc: ...here.
* alloc-pool.c: Moved to...
* alloc-pool.cc: ...here.
* asan.c: Moved to...
* asan.cc: ...here.
* attribs.c: Moved to...
* attribs.cc: ...here.
* auto-inc-dec.c: Moved to...
* auto-inc-dec.cc: ...here.
* auto-profile.c: Moved to...
* auto-profile.cc: ...here.
* bb-reorder.c: Moved to...
* bb-reorder.cc: ...here.
* bitmap.c: Moved to...
* bitmap.cc: ...here.
* btfout.c: Moved to...
* btfout.cc: ...here.
* builtins.c: Moved to...
* builtins.cc: ...here.
* caller-save.c: Moved to...
* caller-save.cc: ...here.
* calls.c: Moved to...
* calls.cc: ...here.
* ccmp.c: Moved to...
* ccmp.cc: ...here.
* cfg.c: Moved to...
* cfg.cc: ...here.
* cfganal.c: Moved to...
* cfganal.cc: ...here.
* cfgbuild.c: Moved to...
* cfgbuild.cc: ...here.
* cfgcleanup.c: Moved to...
* cfgcleanup.cc: ...here.
* cfgexpand.c: Moved to...
* cfgexpand.cc: ...here.
* cfghooks.c: Moved to...
* cfghooks.cc: ...here.
* cfgloop.c: Moved to...
* cfgloop.cc: ...here.
* cfgloopanal.c: Moved to...
* cfgloopanal.cc: ...here.
* cfgloopmanip.c: Moved to...
* cfgloopmanip.cc: ...here.
* cfgrtl.c: Moved to...
* cfgrtl.cc: ...here.
* cgraph.c: Moved to...
* cgraph.cc: ...here.
* cgraphbuild.c: Moved to...
* cgraphbuild.cc: ...here.
* cgraphclones.c: Moved to...
* cgraphclones.cc: ...here.
* cgraphunit.c: Moved to...
* cgraphunit.cc: ...here.
* collect-utils.c: Moved to...
* collect-utils.cc: ...here.
* collect2-aix.c: Moved to...
* collect2-aix.cc: ...here.
* collect2.c: Moved to...
* collect2.cc: ...here.
* combine-stack-adj.c: Moved to...
* combine-stack-adj.cc: ...here.
* combine.c: Moved to...
* combine.cc: ...here.
* common/common-targhooks.c: Moved to...
* common/common-targhooks.cc: ...here.
* common/config/aarch64/aarch64-common.c: Moved to...
* common/config/aarch64/aarch64-common.cc: ...here.
* common/config/alpha/alpha-common.c: Moved to...
* common/config/alpha/alpha-common.cc: ...here.
* common/config/arc/arc-common.c: Moved to...
* common/config/arc/arc-common.cc: ...here.
* common/config/arm/arm-common.c: Moved to...
* common/config/arm/arm-common.cc: ...here.
* common/config/avr/avr-common.c: Moved to...
* common/config/avr/avr-common.cc: ...here.
* common/config/bfin/bfin-common.c: Moved to...
* common/config/bfin/bfin-common.cc: ...here.
* common/config/bpf/bpf-common.c: Moved to...
* common/config/bpf/bpf-common.cc: ...here.
* common/config/c6x/c6x-common.c: Moved to...
* common/config/c6x/c6x-common.cc: ...here.
* common/config/cr16/cr16-common.c: Moved to...
* common/config/cr16/cr16-common.cc: ...here.
* common/config/cris/cris-common.c: Moved to...
* common/config/cris/cris-common.cc: ...here.
* common/config/csky/csky-common.c: Moved to...
* common/config/csky/csky-common.cc: ...here.
* common/config/default-common.c: Moved to...
* common/config/default-common.cc: ...here.
* common/config/epiphany/epiphany-common.c: Moved to...
* common/config/epiphany/epiphany-common.cc: ...here.
* common/config/fr30/fr30-common.c: Moved to...
* common/config/fr30/fr30-common.cc: ...here.
* common/config/frv/frv-common.c: Moved to...
* common/config/frv/frv-common.cc: ...here.
* common/config/gcn/gcn-common.c: Moved to...
* common/config/gcn/gcn-common.cc: ...here.
* common/config/h8300/h8300-common.c: Moved to...
* common/config/h8300/h8300-common.cc: ...here.
* common/config/i386/i386-common.c: Moved to...
* common/config/i386/i386-common.cc: ...here.
* common/config/ia64/ia64-common.c: Moved to...
* common/config/ia64/ia64-common.cc: ...here.
* common/config/iq2000/iq2000-common.c: Moved to...
* common/config/iq2000/iq2000-common.cc: ...here.
* common/config/lm32/lm32-common.c: Moved to...
* common/config/lm32/lm32-common.cc: ...here.
* common/config/m32r/m32r-common.c: Moved to...
* common/config/m32r/m32r-common.cc: ...here.
* common/config/m68k/m68k-common.c: Moved to...
* common/config/m68k/m68k-common.cc: ...here.
* common/config/mcore/mcore-common.c: Moved to...
* common/config/mcore/mcore-common.cc: ...here.
* common/config/microblaze/microblaze-common.c: Moved to...
* common/config/microblaze/microblaze-common.cc: ...here.
* common/config/mips/mips-common.c: Moved to...
* common/config/mips/mips-common.cc: ...here.
* common/config/mmix/mmix-common.c: Moved to...
* common/config/mmix/mmix-common.cc: ...here.
* common/config/mn10300/mn10300-common.c: Moved to...
* common/config/mn10300/mn10300-common.cc: ...here.
* common/config/msp430/msp430-common.c: Moved to...
* common/config/msp430/msp430-common.cc: ...here.
* common/config/nds32/nds32-common.c: Moved to...
* common/config/nds32/nds32-common.cc: ...here.
* common/config/nios2/nios2-common.c: Moved to...
* common/config/nios2/nios2-common.cc: ...here.
* common/config/nvptx/nvptx-common.c: Moved to...
* common/config/nvptx/nvptx-common.cc: ...here.
* common/config/or1k/or1k-common.c: Moved to...
* common/config/or1k/or1k-common.cc: ...here.
* common/config/pa/pa-common.c: Moved to...
* common/config/pa/pa-common.cc: ...here.
* common/config/pdp11/pdp11-common.c: Moved to...
* common/config/pdp11/pdp11-common.cc: ...here.
* common/config/pru/pru-common.c: Moved to...
* common/config/pru/pru-common.cc: ...here.
* common/config/riscv/riscv-common.c: Moved to...
* common/config/riscv/riscv-common.cc: ...here.
* common/config/rs6000/rs6000-common.c: Moved to...
* common/config/rs6000/rs6000-common.cc: ...here.
* common/config/rx/rx-common.c: Moved to...
* common/config/rx/rx-common.cc: ...here.
* common/config/s390/s390-common.c: Moved to...
* common/config/s390/s390-common.cc: ...here.
* common/config/sh/sh-common.c: Moved to...
* common/config/sh/sh-common.cc: ...here.
* common/config/sparc/sparc-common.c: Moved to...
* common/config/sparc/sparc-common.cc: ...here.
* common/config/tilegx/tilegx-common.c: Moved to...
* common/config/tilegx/tilegx-common.cc: ...here.
* common/config/tilepro/tilepro-common.c: Moved to...
* common/config/tilepro/tilepro-common.cc: ...here.
* common/config/v850/v850-common.c: Moved to...
* common/config/v850/v850-common.cc: ...here.
* common/config/vax/vax-common.c: Moved to...
* common/config/vax/vax-common.cc: ...here.
* common/config/visium/visium-common.c: Moved to...
* common/config/visium/visium-common.cc: ...here.
* common/config/xstormy16/xstormy16-common.c: Moved to...
* common/config/xstormy16/xstormy16-common.cc: ...here.
* common/config/xtensa/xtensa-common.c: Moved to...
* common/config/xtensa/xtensa-common.cc: ...here.
* compare-elim.c: Moved to...
* compare-elim.cc: ...here.
* config/aarch64/aarch64-bti-insert.c: Moved to...
* config/aarch64/aarch64-bti-insert.cc: ...here.
* config/aarch64/aarch64-builtins.c: Moved to...
* config/aarch64/aarch64-builtins.cc: ...here.
* config/aarch64/aarch64-c.c: Moved to...
* config/aarch64/aarch64-c.cc: ...here.
* config/aarch64/aarch64-d.c: Moved to...
* config/aarch64/aarch64-d.cc: ...here.
* config/aarch64/aarch64.c: Moved to...
* config/aarch64/aarch64.cc: ...here.
* config/aarch64/cortex-a57-fma-steering.c: Moved to...
* config/aarch64/cortex-a57-fma-steering.cc: ...here.
* config/aarch64/driver-aarch64.c: Moved to...
* config/aarch64/driver-aarch64.cc: ...here.
* config/aarch64/falkor-tag-collision-avoidance.c: Moved to...
* config/aarch64/falkor-tag-collision-avoidance.cc: ...here.
* config/aarch64/host-aarch64-darwin.c: Moved to...
* config/aarch64/host-aarch64-darwin.cc: ...here.
* config/alpha/alpha.c: Moved to...
* config/alpha/alpha.cc: ...here.
* config/alpha/driver-alpha.c: Moved to...
* config/alpha/driver-alpha.cc: ...here.
* config/arc/arc-c.c: Moved to...
* config/arc/arc-c.cc: ...here.
* config/arc/arc.c: Moved to...
* config/arc/arc.cc: ...here.
* config/arc/driver-arc.c: Moved to...
* config/arc/driver-arc.cc: ...here.
* config/arm/aarch-common.c: Moved to...
* config/arm/aarch-common.cc: ...here.
* config/arm/arm-builtins.c: Moved to...
* config/arm/arm-builtins.cc: ...here.
* config/arm/arm-c.c: Moved to...
* config/arm/arm-c.cc: ...here.
* config/arm/arm-d.c: Moved to...
* config/arm/arm-d.cc: ...here.
* config/arm/arm.c: Moved to...
* config/arm/arm.cc: ...here.
* config/arm/driver-arm.c: Moved to...
* config/arm/driver-arm.cc: ...here.
* config/avr/avr-c.c: Moved to...
* config/avr/avr-c.cc: ...here.
* config/avr/avr-devices.c: Moved to...
* config/avr/avr-devices.cc: ...here.
* config/avr/avr-log.c: Moved to...
* config/avr/avr-log.cc: ...here.
* config/avr/avr.c: Moved to...
* config/avr/avr.cc: ...here.
* config/avr/driver-avr.c: Moved to...
* config/avr/driver-avr.cc: ...here.
* config/avr/gen-avr-mmcu-specs.c: Moved to...
* config/avr/gen-avr-mmcu-specs.cc: ...here.
* config/avr/gen-avr-mmcu-texi.c: Moved to...
* config/avr/gen-avr-mmcu-texi.cc: ...here.
* config/bfin/bfin.c: Moved to...
* config/bfin/bfin.cc: ...here.
* config/bpf/bpf.c: Moved to...
* config/bpf/bpf.cc: ...here.
* config/bpf/coreout.c: Moved to...
* config/bpf/coreout.cc: ...here.
* config/c6x/c6x.c: Moved to...
* config/c6x/c6x.cc: ...here.
* config/cr16/cr16.c: Moved to...
* config/cr16/cr16.cc: ...here.
* config/cris/cris.c: Moved to...
* config/cris/cris.cc: ...here.
* config/csky/csky.c: Moved to...
* config/csky/csky.cc: ...here.
* config/darwin-c.c: Moved to...
* config/darwin-c.cc: ...here.
* config/darwin-d.c: Moved to...
* config/darwin-d.cc: ...here.
* config/darwin-driver.c: Moved to...
* config/darwin-driver.cc: ...here.
* config/darwin-f.c: Moved to...
* config/darwin-f.cc: ...here.
* config/darwin.c: Moved to...
* config/darwin.cc: ...here.
* config/default-c.c: Moved to...
* config/default-c.cc: ...here.
* config/default-d.c: Moved to...
* config/default-d.cc: ...here.
* config/dragonfly-d.c: Moved to...
* config/dragonfly-d.cc: ...here.
* config/epiphany/epiphany.c: Moved to...
* config/epiphany/epiphany.cc: ...here.
* config/epiphany/mode-switch-use.c: Moved to...
* config/epiphany/mode-switch-use.cc: ...here.
* config/epiphany/resolve-sw-modes.c: Moved to...
* config/epiphany/resolve-sw-modes.cc: ...here.
* config/fr30/fr30.c: Moved to...
* config/fr30/fr30.cc: ...here.
* config/freebsd-d.c: Moved to...
* config/freebsd-d.cc: ...here.
* config/frv/frv.c: Moved to...
* config/frv/frv.cc: ...here.
* config/ft32/ft32.c: Moved to...
* config/ft32/ft32.cc: ...here.
* config/gcn/driver-gcn.c: Moved to...
* config/gcn/driver-gcn.cc: ...here.
* config/gcn/gcn-run.c: Moved to...
* config/gcn/gcn-run.cc: ...here.
* config/gcn/gcn-tree.c: Moved to...
* config/gcn/gcn-tree.cc: ...here.
* config/gcn/gcn.c: Moved to...
* config/gcn/gcn.cc: ...here.
* config/gcn/mkoffload.c: Moved to...
* config/gcn/mkoffload.cc: ...here.
* config/glibc-c.c: Moved to...
* config/glibc-c.cc: ...here.
* config/glibc-d.c: Moved to...
* config/glibc-d.cc: ...here.
* config/h8300/h8300.c: Moved to...
* config/h8300/h8300.cc: ...here.
* config/host-darwin.c: Moved to...
* config/host-darwin.cc: ...here.
* config/host-hpux.c: Moved to...
* config/host-hpux.cc: ...here.
* config/host-linux.c: Moved to...
* config/host-linux.cc: ...here.
* config/host-netbsd.c: Moved to...
* config/host-netbsd.cc: ...here.
* config/host-openbsd.c: Moved to...
* config/host-openbsd.cc: ...here.
* config/host-solaris.c: Moved to...
* config/host-solaris.cc: ...here.
* config/i386/djgpp.c: Moved to...
* config/i386/djgpp.cc: ...here.
* config/i386/driver-i386.c: Moved to...
* config/i386/driver-i386.cc: ...here.
* config/i386/driver-mingw32.c: Moved to...
* config/i386/driver-mingw32.cc: ...here.
* config/i386/gnu-property.c: Moved to...
* config/i386/gnu-property.cc: ...here.
* config/i386/host-cygwin.c: Moved to...
* config/i386/host-cygwin.cc: ...here.
* config/i386/host-i386-darwin.c: Moved to...
* config/i386/host-i386-darwin.cc: ...here.
* config/i386/host-mingw32.c: Moved to...
* config/i386/host-mingw32.cc: ...here.
* config/i386/i386-builtins.c: Moved to...
* config/i386/i386-builtins.cc: ...here.
* config/i386/i386-c.c: Moved to...
* config/i386/i386-c.cc: ...here.
* config/i386/i386-d.c: Moved to...
* config/i386/i386-d.cc: ...here.
* config/i386/i386-expand.c: Moved to...
* config/i386/i386-expand.cc: ...here.
* config/i386/i386-features.c: Moved to...
* config/i386/i386-features.cc: ...here.
* config/i386/i386-options.c: Moved to...
* config/i386/i386-options.cc: ...here.
* config/i386/i386.c: Moved to...
* config/i386/i386.cc: ...here.
* config/i386/intelmic-mkoffload.c: Moved to...
* config/i386/intelmic-mkoffload.cc: ...here.
* config/i386/msformat-c.c: Moved to...
* config/i386/msformat-c.cc: ...here.
* config/i386/winnt-cxx.c: Moved to...
* config/i386/winnt-cxx.cc: ...here.
* config/i386/winnt-d.c: Moved to...
* config/i386/winnt-d.cc: ...here.
* config/i386/winnt-stubs.c: Moved to...
* config/i386/winnt-stubs.cc: ...here.
* config/i386/winnt.c: Moved to...
* config/i386/winnt.cc: ...here.
* config/i386/x86-tune-sched-atom.c: Moved to...
* config/i386/x86-tune-sched-atom.cc: ...here.
* config/i386/x86-tune-sched-bd.c: Moved to...
* config/i386/x86-tune-sched-bd.cc: ...here.
* config/i386/x86-tune-sched-core.c: Moved to...
* config/i386/x86-tune-sched-core.cc: ...here.
* config/i386/x86-tune-sched.c: Moved to...
* config/i386/x86-tune-sched.cc: ...here.
* config/ia64/ia64-c.c: Moved to...
* config/ia64/ia64-c.cc: ...here.
* config/ia64/ia64.c: Moved to...
* config/ia64/ia64.cc: ...here.
* config/iq2000/iq2000.c: Moved to...
* config/iq2000/iq2000.cc: ...here.
* config/linux.c: Moved to...
* config/linux.cc: ...here.
* config/lm32/lm32.c: Moved to...
* config/lm32/lm32.cc: ...here.
* config/m32c/m32c-pragma.c: Moved to...
* config/m32c/m32c-pragma.cc: ...here.
* config/m32c/m32c.c: Moved to...
* config/m32c/m32c.cc: ...here.
* config/m32r/m32r.c: Moved to...
* config/m32r/m32r.cc: ...here.
* config/m68k/m68k.c: Moved to...
* config/m68k/m68k.cc: ...here.
* config/mcore/mcore.c: Moved to...
* config/mcore/mcore.cc: ...here.
* config/microblaze/microblaze-c.c: Moved to...
* config/microblaze/microblaze-c.cc: ...here.
* config/microblaze/microblaze.c: Moved to...
* config/microblaze/microblaze.cc: ...here.
* config/mips/driver-native.c: Moved to...
* config/mips/driver-native.cc: ...here.
* config/mips/frame-header-opt.c: Moved to...
* config/mips/frame-header-opt.cc: ...here.
* config/mips/mips-d.c: Moved to...
* config/mips/mips-d.cc: ...here.
* config/mips/mips.c: Moved to...
* config/mips/mips.cc: ...here.
* config/mmix/mmix.c: Moved to...
* config/mmix/mmix.cc: ...here.
* config/mn10300/mn10300.c: Moved to...
* config/mn10300/mn10300.cc: ...here.
* config/moxie/moxie.c: Moved to...
* config/moxie/moxie.cc: ...here.
* config/msp430/driver-msp430.c: Moved to...
* config/msp430/driver-msp430.cc: ...here.
* config/msp430/msp430-c.c: Moved to...
* config/msp430/msp430-c.cc: ...here.
* config/msp430/msp430-devices.c: Moved to...
* config/msp430/msp430-devices.cc: ...here.
* config/msp430/msp430.c: Moved to...
* config/msp430/msp430.cc: ...here.
* config/nds32/nds32-cost.c: Moved to...
* config/nds32/nds32-cost.cc: ...here.
* config/nds32/nds32-fp-as-gp.c: Moved to...
* config/nds32/nds32-fp-as-gp.cc: ...here.
* config/nds32/nds32-intrinsic.c: Moved to...
* config/nds32/nds32-intrinsic.cc: ...here.
* config/nds32/nds32-isr.c: Moved to...
* config/nds32/nds32-isr.cc: ...here.
* config/nds32/nds32-md-auxiliary.c: Moved to...
* config/nds32/nds32-md-auxiliary.cc: ...here.
* config/nds32/nds32-memory-manipulation.c: Moved to...
* config/nds32/nds32-memory-manipulation.cc: ...here.
* config/nds32/nds32-pipelines-auxiliary.c: Moved to...
* config/nds32/nds32-pipelines-auxiliary.cc: ...here.
* config/nds32/nds32-predicates.c: Moved to...
* config/nds32/nds32-predicates.cc: ...here.
* config/nds32/nds32-relax-opt.c: Moved to...
* config/nds32/nds32-relax-opt.cc: ...here.
* config/nds32/nds32-utils.c: Moved to...
* config/nds32/nds32-utils.cc: ...here.
* config/nds32/nds32.c: Moved to...
* config/nds32/nds32.cc: ...here.
* config/netbsd-d.c: Moved to...
* config/netbsd-d.cc: ...here.
* config/netbsd.c: Moved to...
* config/netbsd.cc: ...here.
* config/nios2/nios2.c: Moved to...
* config/nios2/nios2.cc: ...here.
* config/nvptx/mkoffload.c: Moved to...
* config/nvptx/mkoffload.cc: ...here.
* config/nvptx/nvptx-c.c: Moved to...
* config/nvptx/nvptx-c.cc: ...here.
* config/nvptx/nvptx.c: Moved to...
* config/nvptx/nvptx.cc: ...here.
* config/openbsd-d.c: Moved to...
* config/openbsd-d.cc: ...here.
* config/or1k/or1k.c: Moved to...
* config/or1k/or1k.cc: ...here.
* config/pa/pa-d.c: Moved to...
* config/pa/pa-d.cc: ...here.
* config/pa/pa.c: Moved to...
* config/pa/pa.cc: ...here.
* config/pdp11/pdp11.c: Moved to...
* config/pdp11/pdp11.cc: ...here.
* config/pru/pru-passes.c: Moved to...
* config/pru/pru-passes.cc: ...here.
* config/pru/pru-pragma.c: Moved to...
* config/pru/pru-pragma.cc: ...here.
* config/pru/pru.c: Moved to...
* config/pru/pru.cc: ...here.
* config/riscv/riscv-builtins.c: Moved to...
* config/riscv/riscv-builtins.cc: ...here.
* config/riscv/riscv-c.c: Moved to...
* config/riscv/riscv-c.cc: ...here.
* config/riscv/riscv-d.c: Moved to...
* config/riscv/riscv-d.cc: ...here.
* config/riscv/riscv-shorten-memrefs.c: Moved to...
* config/riscv/riscv-shorten-memrefs.cc: ...here.
* config/riscv/riscv-sr.c: Moved to...
* config/riscv/riscv-sr.cc: ...here.
* config/riscv/riscv.c: Moved to...
* config/riscv/riscv.cc: ...here.
* config/rl78/rl78-c.c: Moved to...
* config/rl78/rl78-c.cc: ...here.
* config/rl78/rl78.c: Moved to...
* config/rl78/rl78.cc: ...here.
* config/rs6000/driver-rs6000.c: Moved to...
* config/rs6000/driver-rs6000.cc: ...here.
* config/rs6000/host-darwin.c: Moved to...
* config/rs6000/host-darwin.cc: ...here.
* config/rs6000/host-ppc64-darwin.c: Moved to...
* config/rs6000/host-ppc64-darwin.cc: ...here.
* config/rs6000/rbtree.c: Moved to...
* config/rs6000/rbtree.cc: ...here.
* config/rs6000/rs6000-c.c: Moved to...
* config/rs6000/rs6000-c.cc: ...here.
* config/rs6000/rs6000-call.c: Moved to...
* config/rs6000/rs6000-call.cc: ...here.
* config/rs6000/rs6000-d.c: Moved to...
* config/rs6000/rs6000-d.cc: ...here.
* config/rs6000/rs6000-gen-builtins.c: Moved to...
* config/rs6000/rs6000-gen-builtins.cc: ...here.
* config/rs6000/rs6000-linux.c: Moved to...
* config/rs6000/rs6000-linux.cc: ...here.
* config/rs6000/rs6000-logue.c: Moved to...
* config/rs6000/rs6000-logue.cc: ...here.
* config/rs6000/rs6000-p8swap.c: Moved to...
* config/rs6000/rs6000-p8swap.cc: ...here.
* config/rs6000/rs6000-pcrel-opt.c: Moved to...
* config/rs6000/rs6000-pcrel-opt.cc: ...here.
* config/rs6000/rs6000-string.c: Moved to...
* config/rs6000/rs6000-string.cc: ...here.
* config/rs6000/rs6000.c: Moved to...
* config/rs6000/rs6000.cc: ...here.
* config/rx/rx.c: Moved to...
* config/rx/rx.cc: ...here.
* config/s390/driver-native.c: Moved to...
* config/s390/driver-native.cc: ...here.
* config/s390/s390-c.c: Moved to...
* config/s390/s390-c.cc: ...here.
* config/s390/s390-d.c: Moved to...
* config/s390/s390-d.cc: ...here.
* config/s390/s390.c: Moved to...
* config/s390/s390.cc: ...here.
* config/sh/divtab-sh4-300.c: Moved to...
* config/sh/divtab-sh4-300.cc: ...here.
* config/sh/divtab-sh4.c: Moved to...
* config/sh/divtab-sh4.cc: ...here.
* config/sh/divtab.c: Moved to...
* config/sh/divtab.cc: ...here.
* config/sh/sh-c.c: Moved to...
* config/sh/sh-c.cc: ...here.
* config/sh/sh.c: Moved to...
* config/sh/sh.cc: ...here.
* config/sol2-c.c: Moved to...
* config/sol2-c.cc: ...here.
* config/sol2-cxx.c: Moved to...
* config/sol2-cxx.cc: ...here.
* config/sol2-d.c: Moved to...
* config/sol2-d.cc: ...here.
* config/sol2-stubs.c: Moved to...
* config/sol2-stubs.cc: ...here.
* config/sol2.c: Moved to...
* config/sol2.cc: ...here.
* config/sparc/driver-sparc.c: Moved to...
* config/sparc/driver-sparc.cc: ...here.
* config/sparc/sparc-c.c: Moved to...
* config/sparc/sparc-c.cc: ...here.
* config/sparc/sparc-d.c: Moved to...
* config/sparc/sparc-d.cc: ...here.
* config/sparc/sparc.c: Moved to...
* config/sparc/sparc.cc: ...here.
* config/stormy16/stormy16.c: Moved to...
* config/stormy16/stormy16.cc: ...here.
* config/tilegx/mul-tables.c: Moved to...
* config/tilegx/mul-tables.cc: ...here.
* config/tilegx/tilegx-c.c: Moved to...
* config/tilegx/tilegx-c.cc: ...here.
* config/tilegx/tilegx.c: Moved to...
* config/tilegx/tilegx.cc: ...here.
* config/tilepro/mul-tables.c: Moved to...
* config/tilepro/mul-tables.cc: ...here.
* config/tilepro/tilepro-c.c: Moved to...
* config/tilepro/tilepro-c.cc: ...here.
* config/tilepro/tilepro.c: Moved to...
* config/tilepro/tilepro.cc: ...here.
* config/v850/v850-c.c: Moved to...
* config/v850/v850-c.cc: ...here.
* config/v850/v850.c: Moved to...
* config/v850/v850.cc: ...here.
* config/vax/vax.c: Moved to...
* config/vax/vax.cc: ...here.
* config/visium/visium.c: Moved to...
* config/visium/visium.cc: ...here.
* config/vms/vms-c.c: Moved to...
* config/vms/vms-c.cc: ...here.
* config/vms/vms-f.c: Moved to...
* config/vms/vms-f.cc: ...here.
* config/vms/vms.c: Moved to...
* config/vms/vms.cc: ...here.
* config/vxworks-c.c: Moved to...
* config/vxworks-c.cc: ...here.
* config/vxworks.c: Moved to...
* config/vxworks.cc: ...here.
* config/winnt-c.c: Moved to...
* config/winnt-c.cc: ...here.
* config/xtensa/xtensa.c: Moved to...
* config/xtensa/xtensa.cc: ...here.
* context.c: Moved to...
* context.cc: ...here.
* convert.c: Moved to...
* convert.cc: ...here.
* coverage.c: Moved to...
* coverage.cc: ...here.
* cppbuiltin.c: Moved to...
* cppbuiltin.cc: ...here.
* cppdefault.c: Moved to...
* cppdefault.cc: ...here.
* cprop.c: Moved to...
* cprop.cc: ...here.
* cse.c: Moved to...
* cse.cc: ...here.
* cselib.c: Moved to...
* cselib.cc: ...here.
* ctfc.c: Moved to...
* ctfc.cc: ...here.
* ctfout.c: Moved to...
* ctfout.cc: ...here.
* data-streamer-in.c: Moved to...
* data-streamer-in.cc: ...here.
* data-streamer-out.c: Moved to...
* data-streamer-out.cc: ...here.
* data-streamer.c: Moved to...
* data-streamer.cc: ...here.
* dbgcnt.c: Moved to...
* dbgcnt.cc: ...here.
* dbxout.c: Moved to...
* dbxout.cc: ...here.
* dce.c: Moved to...
* dce.cc: ...here.
* ddg.c: Moved to...
* ddg.cc: ...here.
* debug.c: Moved to...
* debug.cc: ...here.
* df-core.c: Moved to...
* df-core.cc: ...here.
* df-problems.c: Moved to...
* df-problems.cc: ...here.
* df-scan.c: Moved to...
* df-scan.cc: ...here.
* dfp.c: Moved to...
* dfp.cc: ...here.
* diagnostic-color.c: Moved to...
* diagnostic-color.cc: ...here.
* diagnostic-show-locus.c: Moved to...
* diagnostic-show-locus.cc: ...here.
* diagnostic-spec.c: Moved to...
* diagnostic-spec.cc: ...here.
* diagnostic.c: Moved to...
* diagnostic.cc: ...here.
* dojump.c: Moved to...
* dojump.cc: ...here.
* dominance.c: Moved to...
* dominance.cc: ...here.
* domwalk.c: Moved to...
* domwalk.cc: ...here.
* double-int.c: Moved to...
* double-int.cc: ...here.
* dse.c: Moved to...
* dse.cc: ...here.
* dumpfile.c: Moved to...
* dumpfile.cc: ...here.
* dwarf2asm.c: Moved to...
* dwarf2asm.cc: ...here.
* dwarf2cfi.c: Moved to...
* dwarf2cfi.cc: ...here.
* dwarf2ctf.c: Moved to...
* dwarf2ctf.cc: ...here.
* dwarf2out.c: Moved to...
* dwarf2out.cc: ...here.
* early-remat.c: Moved to...
* early-remat.cc: ...here.
* edit-context.c: Moved to...
* edit-context.cc: ...here.
* emit-rtl.c: Moved to...
* emit-rtl.cc: ...here.
* errors.c: Moved to...
* errors.cc: ...here.
* et-forest.c: Moved to...
* et-forest.cc: ...here.
* except.c: Moved to...
* except.cc: ...here.
* explow.c: Moved to...
* explow.cc: ...here.
* expmed.c: Moved to...
* expmed.cc: ...here.
* expr.c: Moved to...
* expr.cc: ...here.
* fibonacci_heap.c: Moved to...
* fibonacci_heap.cc: ...here.
* file-find.c: Moved to...
* file-find.cc: ...here.
* file-prefix-map.c: Moved to...
* file-prefix-map.cc: ...here.
* final.c: Moved to...
* final.cc: ...here.
* fixed-value.c: Moved to...
* fixed-value.cc: ...here.
* fold-const-call.c: Moved to...
* fold-const-call.cc: ...here.
* fold-const.c: Moved to...
* fold-const.cc: ...here.
* fp-test.c: Moved to...
* fp-test.cc: ...here.
* function-tests.c: Moved to...
* function-tests.cc: ...here.
* function.c: Moved to...
* function.cc: ...here.
* fwprop.c: Moved to...
* fwprop.cc: ...here.
* gcc-ar.c: Moved to...
* gcc-ar.cc: ...here.
* gcc-main.c: Moved to...
* gcc-main.cc: ...here.
* gcc-rich-location.c: Moved to...
* gcc-rich-location.cc: ...here.
* gcc.c: Moved to...
* gcc.cc: ...here.
* gcov-dump.c: Moved to...
* gcov-dump.cc: ...here.
* gcov-io.c: Moved to...
* gcov-io.cc: ...here.
* gcov-tool.c: Moved to...
* gcov-tool.cc: ...here.
* gcov.c: Moved to...
* gcov.cc: ...here.
* gcse-common.c: Moved to...
* gcse-common.cc: ...here.
* gcse.c: Moved to...
* gcse.cc: ...here.
* genattr-common.c: Moved to...
* genattr-common.cc: ...here.
* genattr.c: Moved to...
* genattr.cc: ...here.
* genattrtab.c: Moved to...
* genattrtab.cc: ...here.
* genautomata.c: Moved to...
* genautomata.cc: ...here.
* gencfn-macros.c: Moved to...
* gencfn-macros.cc: ...here.
* gencheck.c: Moved to...
* gencheck.cc: ...here.
* genchecksum.c: Moved to...
* genchecksum.cc: ...here.
* gencodes.c: Moved to...
* gencodes.cc: ...here.
* genconditions.c: Moved to...
* genconditions.cc: ...here.
* genconfig.c: Moved to...
* genconfig.cc: ...here.
* genconstants.c: Moved to...
* genconstants.cc: ...here.
* genemit.c: Moved to...
* genemit.cc: ...here.
* genenums.c: Moved to...
* genenums.cc: ...here.
* generic-match-head.c: Moved to...
* generic-match-head.cc: ...here.
* genextract.c: Moved to...
* genextract.cc: ...here.
* genflags.c: Moved to...
* genflags.cc: ...here.
* gengenrtl.c: Moved to...
* gengenrtl.cc: ...here.
* gengtype-parse.c: Moved to...
* gengtype-parse.cc: ...here.
* gengtype-state.c: Moved to...
* gengtype-state.cc: ...here.
* gengtype.c: Moved to...
* gengtype.cc: ...here.
* genhooks.c: Moved to...
* genhooks.cc: ...here.
* genmatch.c: Moved to...
* genmatch.cc: ...here.
* genmddeps.c: Moved to...
* genmddeps.cc: ...here.
* genmddump.c: Moved to...
* genmddump.cc: ...here.
* genmodes.c: Moved to...
* genmodes.cc: ...here.
* genopinit.c: Moved to...
* genopinit.cc: ...here.
* genoutput.c: Moved to...
* genoutput.cc: ...here.
* genpeep.c: Moved to...
* genpeep.cc: ...here.
* genpreds.c: Moved to...
* genpreds.cc: ...here.
* genrecog.c: Moved to...
* genrecog.cc: ...here.
* gensupport.c: Moved to...
* gensupport.cc: ...here.
* gentarget-def.c: Moved to...
* gentarget-def.cc: ...here.
* genversion.c: Moved to...
* genversion.cc: ...here.
* ggc-common.c: Moved to...
* ggc-common.cc: ...here.
* ggc-none.c: Moved to...
* ggc-none.cc: ...here.
* ggc-page.c: Moved to...
* ggc-page.cc: ...here.
* ggc-tests.c: Moved to...
* ggc-tests.cc: ...here.
* gimple-builder.c: Moved to...
* gimple-builder.cc: ...here.
* gimple-expr.c: Moved to...
* gimple-expr.cc: ...here.
* gimple-fold.c: Moved to...
* gimple-fold.cc: ...here.
* gimple-iterator.c: Moved to...
* gimple-iterator.cc: ...here.
* gimple-laddress.c: Moved to...
* gimple-laddress.cc: ...here.
* gimple-loop-jam.c: Moved to...
* gimple-loop-jam.cc: ...here.
* gimple-low.c: Moved to...
* gimple-low.cc: ...here.
* gimple-match-head.c: Moved to...
* gimple-match-head.cc: ...here.
* gimple-pretty-print.c: Moved to...
* gimple-pretty-print.cc: ...here.
* gimple-ssa-backprop.c: Moved to...
* gimple-ssa-backprop.cc: ...here.
* gimple-ssa-evrp-analyze.c: Moved to...
* gimple-ssa-evrp-analyze.cc: ...here.
* gimple-ssa-evrp.c: Moved to...
* gimple-ssa-evrp.cc: ...here.
* gimple-ssa-isolate-paths.c: Moved to...
* gimple-ssa-isolate-paths.cc: ...here.
* gimple-ssa-nonnull-compare.c: Moved to...
* gimple-ssa-nonnull-compare.cc: ...here.
* gimple-ssa-split-paths.c: Moved to...
* gimple-ssa-split-paths.cc: ...here.
* gimple-ssa-sprintf.c: Moved to...
* gimple-ssa-sprintf.cc: ...here.
* gimple-ssa-store-merging.c: Moved to...
* gimple-ssa-store-merging.cc: ...here.
* gimple-ssa-strength-reduction.c: Moved to...
* gimple-ssa-strength-reduction.cc: ...here.
* gimple-ssa-warn-alloca.c: Moved to...
* gimple-ssa-warn-alloca.cc: ...here.
* gimple-ssa-warn-restrict.c: Moved to...
* gimple-ssa-warn-restrict.cc: ...here.
* gimple-streamer-in.c: Moved to...
* gimple-streamer-in.cc: ...here.
* gimple-streamer-out.c: Moved to...
* gimple-streamer-out.cc: ...here.
* gimple-walk.c: Moved to...
* gimple-walk.cc: ...here.
* gimple-warn-recursion.c: Moved to...
* gimple-warn-recursion.cc: ...here.
* gimple.c: Moved to...
* gimple.cc: ...here.
* gimplify-me.c: Moved to...
* gimplify-me.cc: ...here.
* gimplify.c: Moved to...
* gimplify.cc: ...here.
* godump.c: Moved to...
* godump.cc: ...here.
* graph.c: Moved to...
* graph.cc: ...here.
* graphds.c: Moved to...
* graphds.cc: ...here.
* graphite-dependences.c: Moved to...
* graphite-dependences.cc: ...here.
* graphite-isl-ast-to-gimple.c: Moved to...
* graphite-isl-ast-to-gimple.cc: ...here.
* graphite-optimize-isl.c: Moved to...
* graphite-optimize-isl.cc: ...here.
* graphite-poly.c: Moved to...
* graphite-poly.cc: ...here.
* graphite-scop-detection.c: Moved to...
* graphite-scop-detection.cc: ...here.
* graphite-sese-to-poly.c: Moved to...
* graphite-sese-to-poly.cc: ...here.
* graphite.c: Moved to...
* graphite.cc: ...here.
* haifa-sched.c: Moved to...
* haifa-sched.cc: ...here.
* hash-map-tests.c: Moved to...
* hash-map-tests.cc: ...here.
* hash-set-tests.c: Moved to...
* hash-set-tests.cc: ...here.
* hash-table.c: Moved to...
* hash-table.cc: ...here.
* hooks.c: Moved to...
* hooks.cc: ...here.
* host-default.c: Moved to...
* host-default.cc: ...here.
* hw-doloop.c: Moved to...
* hw-doloop.cc: ...here.
* hwint.c: Moved to...
* hwint.cc: ...here.
* ifcvt.c: Moved to...
* ifcvt.cc: ...here.
* inchash.c: Moved to...
* inchash.cc: ...here.
* incpath.c: Moved to...
* incpath.cc: ...here.
* init-regs.c: Moved to...
* init-regs.cc: ...here.
* input.c: Moved to...
* input.cc: ...here.
* internal-fn.c: Moved to...
* internal-fn.cc: ...here.
* intl.c: Moved to...
* intl.cc: ...here.
* ipa-comdats.c: Moved to...
* ipa-comdats.cc: ...here.
* ipa-cp.c: Moved to...
* ipa-cp.cc: ...here.
* ipa-devirt.c: Moved to...
* ipa-devirt.cc: ...here.
* ipa-fnsummary.c: Moved to...
* ipa-fnsummary.cc: ...here.
* ipa-icf-gimple.c: Moved to...
* ipa-icf-gimple.cc: ...here.
* ipa-icf.c: Moved to...
* ipa-icf.cc: ...here.
* ipa-inline-analysis.c: Moved to...
* ipa-inline-analysis.cc: ...here.
* ipa-inline-transform.c: Moved to...
* ipa-inline-transform.cc: ...here.
* ipa-inline.c: Moved to...
* ipa-inline.cc: ...here.
* ipa-modref-tree.c: Moved to...
* ipa-modref-tree.cc: ...here.
* ipa-modref.c: Moved to...
* ipa-modref.cc: ...here.
* ipa-param-manipulation.c: Moved to...
* ipa-param-manipulation.cc: ...here.
* ipa-polymorphic-call.c: Moved to...
* ipa-polymorphic-call.cc: ...here.
* ipa-predicate.c: Moved to...
* ipa-predicate.cc: ...here.
* ipa-profile.c: Moved to...
* ipa-profile.cc: ...here.
* ipa-prop.c: Moved to...
* ipa-prop.cc: ...here.
* ipa-pure-const.c: Moved to...
* ipa-pure-const.cc: ...here.
* ipa-ref.c: Moved to...
* ipa-ref.cc: ...here.
* ipa-reference.c: Moved to...
* ipa-reference.cc: ...here.
* ipa-split.c: Moved to...
* ipa-split.cc: ...here.
* ipa-sra.c: Moved to...
* ipa-sra.cc: ...here.
* ipa-utils.c: Moved to...
* ipa-utils.cc: ...here.
* ipa-visibility.c: Moved to...
* ipa-visibility.cc: ...here.
* ipa.c: Moved to...
* ipa.cc: ...here.
* ira-build.c: Moved to...
* ira-build.cc: ...here.
* ira-color.c: Moved to...
* ira-color.cc: ...here.
* ira-conflicts.c: Moved to...
* ira-conflicts.cc: ...here.
* ira-costs.c: Moved to...
* ira-costs.cc: ...here.
* ira-emit.c: Moved to...
* ira-emit.cc: ...here.
* ira-lives.c: Moved to...
* ira-lives.cc: ...here.
* ira.c: Moved to...
* ira.cc: ...here.
* jump.c: Moved to...
* jump.cc: ...here.
* langhooks.c: Moved to...
* langhooks.cc: ...here.
* lcm.c: Moved to...
* lcm.cc: ...here.
* lists.c: Moved to...
* lists.cc: ...here.
* loop-doloop.c: Moved to...
* loop-doloop.cc: ...here.
* loop-init.c: Moved to...
* loop-init.cc: ...here.
* loop-invariant.c: Moved to...
* loop-invariant.cc: ...here.
* loop-iv.c: Moved to...
* loop-iv.cc: ...here.
* loop-unroll.c: Moved to...
* loop-unroll.cc: ...here.
* lower-subreg.c: Moved to...
* lower-subreg.cc: ...here.
* lra-assigns.c: Moved to...
* lra-assigns.cc: ...here.
* lra-coalesce.c: Moved to...
* lra-coalesce.cc: ...here.
* lra-constraints.c: Moved to...
* lra-constraints.cc: ...here.
* lra-eliminations.c: Moved to...
* lra-eliminations.cc: ...here.
* lra-lives.c: Moved to...
* lra-lives.cc: ...here.
* lra-remat.c: Moved to...
* lra-remat.cc: ...here.
* lra-spills.c: Moved to...
* lra-spills.cc: ...here.
* lra.c: Moved to...
* lra.cc: ...here.
* lto-cgraph.c: Moved to...
* lto-cgraph.cc: ...here.
* lto-compress.c: Moved to...
* lto-compress.cc: ...here.
* lto-opts.c: Moved to...
* lto-opts.cc: ...here.
* lto-section-in.c: Moved to...
* lto-section-in.cc: ...here.
* lto-section-out.c: Moved to...
* lto-section-out.cc: ...here.
* lto-streamer-in.c: Moved to...
* lto-streamer-in.cc: ...here.
* lto-streamer-out.c: Moved to...
* lto-streamer-out.cc: ...here.
* lto-streamer.c: Moved to...
* lto-streamer.cc: ...here.
* lto-wrapper.c: Moved to...
* lto-wrapper.cc: ...here.
* main.c: Moved to...
* main.cc: ...here.
* mcf.c: Moved to...
* mcf.cc: ...here.
* mode-switching.c: Moved to...
* mode-switching.cc: ...here.
* modulo-sched.c: Moved to...
* modulo-sched.cc: ...here.
* multiple_target.c: Moved to...
* multiple_target.cc: ...here.
* omp-expand.c: Moved to...
* omp-expand.cc: ...here.
* omp-general.c: Moved to...
* omp-general.cc: ...here.
* omp-low.c: Moved to...
* omp-low.cc: ...here.
* omp-offload.c: Moved to...
* omp-offload.cc: ...here.
* omp-simd-clone.c: Moved to...
* omp-simd-clone.cc: ...here.
* opt-suggestions.c: Moved to...
* opt-suggestions.cc: ...here.
* optabs-libfuncs.c: Moved to...
* optabs-libfuncs.cc: ...here.
* optabs-query.c: Moved to...
* optabs-query.cc: ...here.
* optabs-tree.c: Moved to...
* optabs-tree.cc: ...here.
* optabs.c: Moved to...
* optabs.cc: ...here.
* opts-common.c: Moved to...
* opts-common.cc: ...here.
* opts-global.c: Moved to...
* opts-global.cc: ...here.
* opts.c: Moved to...
* opts.cc: ...here.
* passes.c: Moved to...
* passes.cc: ...here.
* plugin.c: Moved to...
* plugin.cc: ...here.
* postreload-gcse.c: Moved to...
* postreload-gcse.cc: ...here.
* postreload.c: Moved to...
* postreload.cc: ...here.
* predict.c: Moved to...
* predict.cc: ...here.
* prefix.c: Moved to...
* prefix.cc: ...here.
* pretty-print.c: Moved to...
* pretty-print.cc: ...here.
* print-rtl-function.c: Moved to...
* print-rtl-function.cc: ...here.
* print-rtl.c: Moved to...
* print-rtl.cc: ...here.
* print-tree.c: Moved to...
* print-tree.cc: ...here.
* profile-count.c: Moved to...
* profile-count.cc: ...here.
* profile.c: Moved to...
* profile.cc: ...here.
* read-md.c: Moved to...
* read-md.cc: ...here.
* read-rtl-function.c: Moved to...
* read-rtl-function.cc: ...here.
* read-rtl.c: Moved to...
* read-rtl.cc: ...here.
* real.c: Moved to...
* real.cc: ...here.
* realmpfr.c: Moved to...
* realmpfr.cc: ...here.
* recog.c: Moved to...
* recog.cc: ...here.
* ree.c: Moved to...
* ree.cc: ...here.
* reg-stack.c: Moved to...
* reg-stack.cc: ...here.
* regcprop.c: Moved to...
* regcprop.cc: ...here.
* reginfo.c: Moved to...
* reginfo.cc: ...here.
* regrename.c: Moved to...
* regrename.cc: ...here.
* regstat.c: Moved to...
* regstat.cc: ...here.
* reload.c: Moved to...
* reload.cc: ...here.
* reload1.c: Moved to...
* reload1.cc: ...here.
* reorg.c: Moved to...
* reorg.cc: ...here.
* resource.c: Moved to...
* resource.cc: ...here.
* rtl-error.c: Moved to...
* rtl-error.cc: ...here.
* rtl-tests.c: Moved to...
* rtl-tests.cc: ...here.
* rtl.c: Moved to...
* rtl.cc: ...here.
* rtlanal.c: Moved to...
* rtlanal.cc: ...here.
* rtlhash.c: Moved to...
* rtlhash.cc: ...here.
* rtlhooks.c: Moved to...
* rtlhooks.cc: ...here.
* rtx-vector-builder.c: Moved to...
* rtx-vector-builder.cc: ...here.
* run-rtl-passes.c: Moved to...
* run-rtl-passes.cc: ...here.
* sancov.c: Moved to...
* sancov.cc: ...here.
* sanopt.c: Moved to...
* sanopt.cc: ...here.
* sbitmap.c: Moved to...
* sbitmap.cc: ...here.
* sched-deps.c: Moved to...
* sched-deps.cc: ...here.
* sched-ebb.c: Moved to...
* sched-ebb.cc: ...here.
* sched-rgn.c: Moved to...
* sched-rgn.cc: ...here.
* sel-sched-dump.c: Moved to...
* sel-sched-dump.cc: ...here.
* sel-sched-ir.c: Moved to...
* sel-sched-ir.cc: ...here.
* sel-sched.c: Moved to...
* sel-sched.cc: ...here.
* selftest-diagnostic.c: Moved to...
* selftest-diagnostic.cc: ...here.
* selftest-rtl.c: Moved to...
* selftest-rtl.cc: ...here.
* selftest-run-tests.c: Moved to...
* selftest-run-tests.cc: ...here.
* selftest.c: Moved to...
* selftest.cc: ...here.
* sese.c: Moved to...
* sese.cc: ...here.
* shrink-wrap.c: Moved to...
* shrink-wrap.cc: ...here.
* simplify-rtx.c: Moved to...
* simplify-rtx.cc: ...here.
* sparseset.c: Moved to...
* sparseset.cc: ...here.
* spellcheck-tree.c: Moved to...
* spellcheck-tree.cc: ...here.
* spellcheck.c: Moved to...
* spellcheck.cc: ...here.
* sreal.c: Moved to...
* sreal.cc: ...here.
* stack-ptr-mod.c: Moved to...
* stack-ptr-mod.cc: ...here.
* statistics.c: Moved to...
* statistics.cc: ...here.
* stmt.c: Moved to...
* stmt.cc: ...here.
* stor-layout.c: Moved to...
* stor-layout.cc: ...here.
* store-motion.c: Moved to...
* store-motion.cc: ...here.
* streamer-hooks.c: Moved to...
* streamer-hooks.cc: ...here.
* stringpool.c: Moved to...
* stringpool.cc: ...here.
* substring-locations.c: Moved to...
* substring-locations.cc: ...here.
* symtab.c: Moved to...
* symtab.cc: ...here.
* target-globals.c: Moved to...
* target-globals.cc: ...here.
* targhooks.c: Moved to...
* targhooks.cc: ...here.
* timevar.c: Moved to...
* timevar.cc: ...here.
* toplev.c: Moved to...
* toplev.cc: ...here.
* tracer.c: Moved to...
* tracer.cc: ...here.
* trans-mem.c: Moved to...
* trans-mem.cc: ...here.
* tree-affine.c: Moved to...
* tree-affine.cc: ...here.
* tree-call-cdce.c: Moved to...
* tree-call-cdce.cc: ...here.
* tree-cfg.c: Moved to...
* tree-cfg.cc: ...here.
* tree-cfgcleanup.c: Moved to...
* tree-cfgcleanup.cc: ...here.
* tree-chrec.c: Moved to...
* tree-chrec.cc: ...here.
* tree-complex.c: Moved to...
* tree-complex.cc: ...here.
* tree-data-ref.c: Moved to...
* tree-data-ref.cc: ...here.
* tree-dfa.c: Moved to...
* tree-dfa.cc: ...here.
* tree-diagnostic.c: Moved to...
* tree-diagnostic.cc: ...here.
* tree-dump.c: Moved to...
* tree-dump.cc: ...here.
* tree-eh.c: Moved to...
* tree-eh.cc: ...here.
* tree-emutls.c: Moved to...
* tree-emutls.cc: ...here.
* tree-if-conv.c: Moved to...
* tree-if-conv.cc: ...here.
* tree-inline.c: Moved to...
* tree-inline.cc: ...here.
* tree-into-ssa.c: Moved to...
* tree-into-ssa.cc: ...here.
* tree-iterator.c: Moved to...
* tree-iterator.cc: ...here.
* tree-loop-distribution.c: Moved to...
* tree-loop-distribution.cc: ...here.
* tree-nested.c: Moved to...
* tree-nested.cc: ...here.
* tree-nrv.c: Moved to...
* tree-nrv.cc: ...here.
* tree-object-size.c: Moved to...
* tree-object-size.cc: ...here.
* tree-outof-ssa.c: Moved to...
* tree-outof-ssa.cc: ...here.
* tree-parloops.c: Moved to...
* tree-parloops.cc: ...here.
* tree-phinodes.c: Moved to...
* tree-phinodes.cc: ...here.
* tree-predcom.c: Moved to...
* tree-predcom.cc: ...here.
* tree-pretty-print.c: Moved to...
* tree-pretty-print.cc: ...here.
* tree-profile.c: Moved to...
* tree-profile.cc: ...here.
* tree-scalar-evolution.c: Moved to...
* tree-scalar-evolution.cc: ...here.
* tree-sra.c: Moved to...
* tree-sra.cc: ...here.
* tree-ssa-address.c: Moved to...
* tree-ssa-address.cc: ...here.
* tree-ssa-alias.c: Moved to...
* tree-ssa-alias.cc: ...here.
* tree-ssa-ccp.c: Moved to...
* tree-ssa-ccp.cc: ...here.
* tree-ssa-coalesce.c: Moved to...
* tree-ssa-coalesce.cc: ...here.
* tree-ssa-copy.c: Moved to...
* tree-ssa-copy.cc: ...here.
* tree-ssa-dce.c: Moved to...
* tree-ssa-dce.cc: ...here.
* tree-ssa-dom.c: Moved to...
* tree-ssa-dom.cc: ...here.
* tree-ssa-dse.c: Moved to...
* tree-ssa-dse.cc: ...here.
* tree-ssa-forwprop.c: Moved to...
* tree-ssa-forwprop.cc: ...here.
* tree-ssa-ifcombine.c: Moved to...
* tree-ssa-ifcombine.cc: ...here.
* tree-ssa-live.c: Moved to...
* tree-ssa-live.cc: ...here.
* tree-ssa-loop-ch.c: Moved to...
* tree-ssa-loop-ch.cc: ...here.
* tree-ssa-loop-im.c: Moved to...
* tree-ssa-loop-im.cc: ...here.
* tree-ssa-loop-ivcanon.c: Moved to...
* tree-ssa-loop-ivcanon.cc: ...here.
* tree-ssa-loop-ivopts.c: Moved to...
* tree-ssa-loop-ivopts.cc: ...here.
* tree-ssa-loop-manip.c: Moved to...
* tree-ssa-loop-manip.cc: ...here.
* tree-ssa-loop-niter.c: Moved to...
* tree-ssa-loop-niter.cc: ...here.
* tree-ssa-loop-prefetch.c: Moved to...
* tree-ssa-loop-prefetch.cc: ...here.
* tree-ssa-loop-split.c: Moved to...
* tree-ssa-loop-split.cc: ...here.
* tree-ssa-loop-unswitch.c: Moved to...
* tree-ssa-loop-unswitch.cc: ...here.
* tree-ssa-loop.c: Moved to...
* tree-ssa-loop.cc: ...here.
* tree-ssa-math-opts.c: Moved to...
* tree-ssa-math-opts.cc: ...here.
* tree-ssa-operands.c: Moved to...
* tree-ssa-operands.cc: ...here.
* tree-ssa-phiopt.c: Moved to...
* tree-ssa-phiopt.cc: ...here.
* tree-ssa-phiprop.c: Moved to...
* tree-ssa-phiprop.cc: ...here.
* tree-ssa-pre.c: Moved to...
* tree-ssa-pre.cc: ...here.
* tree-ssa-propagate.c: Moved to...
* tree-ssa-propagate.cc: ...here.
* tree-ssa-reassoc.c: Moved to...
* tree-ssa-reassoc.cc: ...here.
* tree-ssa-sccvn.c: Moved to...
* tree-ssa-sccvn.cc: ...here.
* tree-ssa-scopedtables.c: Moved to...
* tree-ssa-scopedtables.cc: ...here.
* tree-ssa-sink.c: Moved to...
* tree-ssa-sink.cc: ...here.
* tree-ssa-strlen.c: Moved to...
* tree-ssa-strlen.cc: ...here.
* tree-ssa-structalias.c: Moved to...
* tree-ssa-structalias.cc: ...here.
* tree-ssa-tail-merge.c: Moved to...
* tree-ssa-tail-merge.cc: ...here.
* tree-ssa-ter.c: Moved to...
* tree-ssa-ter.cc: ...here.
* tree-ssa-threadbackward.c: Moved to...
* tree-ssa-threadbackward.cc: ...here.
* tree-ssa-threadedge.c: Moved to...
* tree-ssa-threadedge.cc: ...here.
* tree-ssa-threadupdate.c: Moved to...
* tree-ssa-threadupdate.cc: ...here.
* tree-ssa-uncprop.c: Moved to...
* tree-ssa-uncprop.cc: ...here.
* tree-ssa-uninit.c: Moved to...
* tree-ssa-uninit.cc: ...here.
* tree-ssa.c: Moved to...
* tree-ssa.cc: ...here.
* tree-ssanames.c: Moved to...
* tree-ssanames.cc: ...here.
* tree-stdarg.c: Moved to...
* tree-stdarg.cc: ...here.
* tree-streamer-in.c: Moved to...
* tree-streamer-in.cc: ...here.
* tree-streamer-out.c: Moved to...
* tree-streamer-out.cc: ...here.
* tree-streamer.c: Moved to...
* tree-streamer.cc: ...here.
* tree-switch-conversion.c: Moved to...
* tree-switch-conversion.cc: ...here.
* tree-tailcall.c: Moved to...
* tree-tailcall.cc: ...here.
* tree-vect-data-refs.c: Moved to...
* tree-vect-data-refs.cc: ...here.
* tree-vect-generic.c: Moved to...
* tree-vect-generic.cc: ...here.
* tree-vect-loop-manip.c: Moved to...
* tree-vect-loop-manip.cc: ...here.
* tree-vect-loop.c: Moved to...
* tree-vect-loop.cc: ...here.
* tree-vect-patterns.c: Moved to...
* tree-vect-patterns.cc: ...here.
* tree-vect-slp-patterns.c: Moved to...
* tree-vect-slp-patterns.cc: ...here.
* tree-vect-slp.c: Moved to...
* tree-vect-slp.cc: ...here.
* tree-vect-stmts.c: Moved to...
* tree-vect-stmts.cc: ...here.
* tree-vector-builder.c: Moved to...
* tree-vector-builder.cc: ...here.
* tree-vectorizer.c: Moved to...
* tree-vectorizer.cc: ...here.
* tree-vrp.c: Moved to...
* tree-vrp.cc: ...here.
* tree.c: Moved to...
* tree.cc: ...here.
* tsan.c: Moved to...
* tsan.cc: ...here.
* typed-splay-tree.c: Moved to...
* typed-splay-tree.cc: ...here.
* ubsan.c: Moved to...
* ubsan.cc: ...here.
* valtrack.c: Moved to...
* valtrack.cc: ...here.
* value-prof.c: Moved to...
* value-prof.cc: ...here.
* var-tracking.c: Moved to...
* var-tracking.cc: ...here.
* varasm.c: Moved to...
* varasm.cc: ...here.
* varpool.c: Moved to...
* varpool.cc: ...here.
* vec-perm-indices.c: Moved to...
* vec-perm-indices.cc: ...here.
* vec.c: Moved to...
* vec.cc: ...here.
* vmsdbgout.c: Moved to...
* vmsdbgout.cc: ...here.
* vr-values.c: Moved to...
* vr-values.cc: ...here.
* vtable-verify.c: Moved to...
* vtable-verify.cc: ...here.
* web.c: Moved to...
* web.cc: ...here.
* xcoffout.c: Moved to...
* xcoffout.cc: ...here.
gcc/c-family/ChangeLog:
* c-ada-spec.c: Moved to...
* c-ada-spec.cc: ...here.
* c-attribs.c: Moved to...
* c-attribs.cc: ...here.
* c-common.c: Moved to...
* c-common.cc: ...here.
* c-cppbuiltin.c: Moved to...
* c-cppbuiltin.cc: ...here.
* c-dump.c: Moved to...
* c-dump.cc: ...here.
* c-format.c: Moved to...
* c-format.cc: ...here.
* c-gimplify.c: Moved to...
* c-gimplify.cc: ...here.
* c-indentation.c: Moved to...
* c-indentation.cc: ...here.
* c-lex.c: Moved to...
* c-lex.cc: ...here.
* c-omp.c: Moved to...
* c-omp.cc: ...here.
* c-opts.c: Moved to...
* c-opts.cc: ...here.
* c-pch.c: Moved to...
* c-pch.cc: ...here.
* c-ppoutput.c: Moved to...
* c-ppoutput.cc: ...here.
* c-pragma.c: Moved to...
* c-pragma.cc: ...here.
* c-pretty-print.c: Moved to...
* c-pretty-print.cc: ...here.
* c-semantics.c: Moved to...
* c-semantics.cc: ...here.
* c-ubsan.c: Moved to...
* c-ubsan.cc: ...here.
* c-warn.c: Moved to...
* c-warn.cc: ...here.
* cppspec.c: Moved to...
* cppspec.cc: ...here.
* stub-objc.c: Moved to...
* stub-objc.cc: ...here.
gcc/c/ChangeLog:
* c-aux-info.c: Moved to...
* c-aux-info.cc: ...here.
* c-convert.c: Moved to...
* c-convert.cc: ...here.
* c-decl.c: Moved to...
* c-decl.cc: ...here.
* c-errors.c: Moved to...
* c-errors.cc: ...here.
* c-fold.c: Moved to...
* c-fold.cc: ...here.
* c-lang.c: Moved to...
* c-lang.cc: ...here.
* c-objc-common.c: Moved to...
* c-objc-common.cc: ...here.
* c-parser.c: Moved to...
* c-parser.cc: ...here.
* c-typeck.c: Moved to...
* c-typeck.cc: ...here.
* gccspec.c: Moved to...
* gccspec.cc: ...here.
* gimple-parser.c: Moved to...
* gimple-parser.cc: ...here.
gcc/cp/ChangeLog:
* call.c: Moved to...
* call.cc: ...here.
* class.c: Moved to...
* class.cc: ...here.
* constexpr.c: Moved to...
* constexpr.cc: ...here.
* cp-gimplify.c: Moved to...
* cp-gimplify.cc: ...here.
* cp-lang.c: Moved to...
* cp-lang.cc: ...here.
* cp-objcp-common.c: Moved to...
* cp-objcp-common.cc: ...here.
* cp-ubsan.c: Moved to...
* cp-ubsan.cc: ...here.
* cvt.c: Moved to...
* cvt.cc: ...here.
* cxx-pretty-print.c: Moved to...
* cxx-pretty-print.cc: ...here.
* decl.c: Moved to...
* decl.cc: ...here.
* decl2.c: Moved to...
* decl2.cc: ...here.
* dump.c: Moved to...
* dump.cc: ...here.
* error.c: Moved to...
* error.cc: ...here.
* except.c: Moved to...
* except.cc: ...here.
* expr.c: Moved to...
* expr.cc: ...here.
* friend.c: Moved to...
* friend.cc: ...here.
* g++spec.c: Moved to...
* g++spec.cc: ...here.
* init.c: Moved to...
* init.cc: ...here.
* lambda.c: Moved to...
* lambda.cc: ...here.
* lex.c: Moved to...
* lex.cc: ...here.
* mangle.c: Moved to...
* mangle.cc: ...here.
* method.c: Moved to...
* method.cc: ...here.
* name-lookup.c: Moved to...
* name-lookup.cc: ...here.
* optimize.c: Moved to...
* optimize.cc: ...here.
* parser.c: Moved to...
* parser.cc: ...here.
* pt.c: Moved to...
* pt.cc: ...here.
* ptree.c: Moved to...
* ptree.cc: ...here.
* rtti.c: Moved to...
* rtti.cc: ...here.
* search.c: Moved to...
* search.cc: ...here.
* semantics.c: Moved to...
* semantics.cc: ...here.
* tree.c: Moved to...
* tree.cc: ...here.
* typeck.c: Moved to...
* typeck.cc: ...here.
* typeck2.c: Moved to...
* typeck2.cc: ...here.
* vtable-class-hierarchy.c: Moved to...
* vtable-class-hierarchy.cc: ...here.
gcc/fortran/ChangeLog:
* arith.c: Moved to...
* arith.cc: ...here.
* array.c: Moved to...
* array.cc: ...here.
* bbt.c: Moved to...
* bbt.cc: ...here.
* check.c: Moved to...
* check.cc: ...here.
* class.c: Moved to...
* class.cc: ...here.
* constructor.c: Moved to...
* constructor.cc: ...here.
* convert.c: Moved to...
* convert.cc: ...here.
* cpp.c: Moved to...
* cpp.cc: ...here.
* data.c: Moved to...
* data.cc: ...here.
* decl.c: Moved to...
* decl.cc: ...here.
* dependency.c: Moved to...
* dependency.cc: ...here.
* dump-parse-tree.c: Moved to...
* dump-parse-tree.cc: ...here.
* error.c: Moved to...
* error.cc: ...here.
* expr.c: Moved to...
* expr.cc: ...here.
* f95-lang.c: Moved to...
* f95-lang.cc: ...here.
* frontend-passes.c: Moved to...
* frontend-passes.cc: ...here.
* gfortranspec.c: Moved to...
* gfortranspec.cc: ...here.
* interface.c: Moved to...
* interface.cc: ...here.
* intrinsic.c: Moved to...
* intrinsic.cc: ...here.
* io.c: Moved to...
* io.cc: ...here.
* iresolve.c: Moved to...
* iresolve.cc: ...here.
* match.c: Moved to...
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* matchexp.c: Moved to...
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* misc.c: Moved to...
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* module.c: Moved to...
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* openmp.c: Moved to...
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* options.c: Moved to...
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* parse.c: Moved to...
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* primary.c: Moved to...
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* resolve.c: Moved to...
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* scanner.c: Moved to...
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* simplify.c: Moved to...
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* target-memory.c: Moved to...
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* trans-array.c: Moved to...
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* trans-common.c: Moved to...
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* trans-const.c: Moved to...
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* trans-decl.c: Moved to...
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* trans-expr.c: Moved to...
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* trans-intrinsic.c: Moved to...
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* trans-io.c: Moved to...
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* trans-openmp.c: Moved to...
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* trans-stmt.c: Moved to...
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* trans-types.c: Moved to...
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* dummy-frontend.c: Moved to...
* dummy-frontend.cc: ...here.
* jit-builtins.c: Moved to...
* jit-builtins.cc: ...here.
* jit-logging.c: Moved to...
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* jit-playback.c: Moved to...
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* jit-w32.c: Moved to...
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* lto-dump.c: Moved to...
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* lto-partition.c: Moved to...
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* lto-symtab.c: Moved to...
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* objc-act.c: Moved to...
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* objc-encoding.c: Moved to...
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* objc-gnu-runtime-abi-01.c: Moved to...
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* objc-lang.c: Moved to...
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* objc-map.c: Moved to...
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* objc-runtime-shared-support.c: Moved to...
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gcc/objcp/ChangeLog:
* objcp-decl.c: Moved to...
* objcp-decl.cc: ...here.
* objcp-lang.c: Moved to...
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libcpp/ChangeLog:
* charset.c: Moved to...
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* directives.c: Moved to...
* directives.cc: ...here.
* errors.c: Moved to...
* errors.cc: ...here.
* expr.c: Moved to...
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* files.c: Moved to...
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* identifiers.c: Moved to...
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* init.c: Moved to...
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* line-map.c: Moved to...
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* macro.c: Moved to...
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* makeucnid.c: Moved to...
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* mkdeps.c: Moved to...
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* symtab.c: Moved to...
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* traditional.c: Moved to...
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Diffstat (limited to 'gcc/dwarf2cfi.c')
-rw-r--r-- | gcc/dwarf2cfi.c | 3815 |
1 files changed, 0 insertions, 3815 deletions
diff --git a/gcc/dwarf2cfi.c b/gcc/dwarf2cfi.c deleted file mode 100644 index 9ca97d7..0000000 --- a/gcc/dwarf2cfi.c +++ /dev/null @@ -1,3815 +0,0 @@ -/* Dwarf2 Call Frame Information helper routines. - Copyright (C) 1992-2022 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 3, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING3. If not see -<http://www.gnu.org/licenses/>. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "target.h" -#include "function.h" -#include "rtl.h" -#include "tree.h" -#include "tree-pass.h" -#include "memmodel.h" -#include "tm_p.h" -#include "emit-rtl.h" -#include "stor-layout.h" -#include "cfgbuild.h" -#include "dwarf2out.h" -#include "dwarf2asm.h" -#include "common/common-target.h" - -#include "except.h" /* expand_builtin_dwarf_sp_column */ -#include "profile-count.h" /* For expr.h */ -#include "expr.h" /* init_return_column_size */ -#include "output.h" /* asm_out_file */ -#include "debug.h" /* dwarf2out_do_frame, dwarf2out_do_cfi_asm */ -#include "flags.h" /* dwarf_debuginfo_p */ - -/* ??? Poison these here until it can be done generically. They've been - totally replaced in this file; make sure it stays that way. */ -#undef DWARF2_UNWIND_INFO -#undef DWARF2_FRAME_INFO -#if (GCC_VERSION >= 3000) - #pragma GCC poison DWARF2_UNWIND_INFO DWARF2_FRAME_INFO -#endif - -#ifndef INCOMING_RETURN_ADDR_RTX -#define INCOMING_RETURN_ADDR_RTX (gcc_unreachable (), NULL_RTX) -#endif - -#ifndef DEFAULT_INCOMING_FRAME_SP_OFFSET -#define DEFAULT_INCOMING_FRAME_SP_OFFSET INCOMING_FRAME_SP_OFFSET -#endif - -/* A collected description of an entire row of the abstract CFI table. */ -struct GTY(()) dw_cfi_row -{ - /* The expression that computes the CFA, expressed in two different ways. - The CFA member for the simple cases, and the full CFI expression for - the complex cases. The later will be a DW_CFA_cfa_expression. */ - dw_cfa_location cfa; - dw_cfi_ref cfa_cfi; - - /* The expressions for any register column that is saved. */ - cfi_vec reg_save; - - /* True if the register window is saved. */ - bool window_save; - - /* True if the return address is in a mangled state. */ - bool ra_mangled; -}; - -/* The caller's ORIG_REG is saved in SAVED_IN_REG. */ -struct GTY(()) reg_saved_in_data { - rtx orig_reg; - rtx saved_in_reg; -}; - - -/* Since we no longer have a proper CFG, we're going to create a facsimile - of one on the fly while processing the frame-related insns. - - We create dw_trace_info structures for each extended basic block beginning - and ending at a "save point". Save points are labels, barriers, certain - notes, and of course the beginning and end of the function. - - As we encounter control transfer insns, we propagate the "current" - row state across the edges to the starts of traces. When checking is - enabled, we validate that we propagate the same data from all sources. - - All traces are members of the TRACE_INFO array, in the order in which - they appear in the instruction stream. - - All save points are present in the TRACE_INDEX hash, mapping the insn - starting a trace to the dw_trace_info describing the trace. */ - -struct dw_trace_info -{ - /* The insn that begins the trace. */ - rtx_insn *head; - - /* The row state at the beginning and end of the trace. */ - dw_cfi_row *beg_row, *end_row; - - /* Tracking for DW_CFA_GNU_args_size. The "true" sizes are those we find - while scanning insns. However, the args_size value is irrelevant at - any point except can_throw_internal_p insns. Therefore the "delay" - sizes the values that must actually be emitted for this trace. */ - poly_int64_pod beg_true_args_size, end_true_args_size; - poly_int64_pod beg_delay_args_size, end_delay_args_size; - - /* The first EH insn in the trace, where beg_delay_args_size must be set. */ - rtx_insn *eh_head; - - /* The following variables contain data used in interpreting frame related - expressions. These are not part of the "real" row state as defined by - Dwarf, but it seems like they need to be propagated into a trace in case - frame related expressions have been sunk. */ - /* ??? This seems fragile. These variables are fragments of a larger - expression. If we do not keep the entire expression together, we risk - not being able to put it together properly. Consider forcing targets - to generate self-contained expressions and dropping all of the magic - interpretation code in this file. Or at least refusing to shrink wrap - any frame related insn that doesn't contain a complete expression. */ - - /* The register used for saving registers to the stack, and its offset - from the CFA. */ - dw_cfa_location cfa_store; - - /* A temporary register holding an integral value used in adjusting SP - or setting up the store_reg. The "offset" field holds the integer - value, not an offset. */ - dw_cfa_location cfa_temp; - - /* A set of registers saved in other registers. This is the inverse of - the row->reg_save info, if the entry is a DW_CFA_register. This is - implemented as a flat array because it normally contains zero or 1 - entry, depending on the target. IA-64 is the big spender here, using - a maximum of 5 entries. */ - vec<reg_saved_in_data> regs_saved_in_regs; - - /* An identifier for this trace. Used only for debugging dumps. */ - unsigned id; - - /* True if this trace immediately follows NOTE_INSN_SWITCH_TEXT_SECTIONS. */ - bool switch_sections; - - /* True if we've seen different values incoming to beg_true_args_size. */ - bool args_size_undefined; - - /* True if we've seen an insn with a REG_ARGS_SIZE note before EH_HEAD. */ - bool args_size_defined_for_eh; -}; - - -/* Hashtable helpers. */ - -struct trace_info_hasher : nofree_ptr_hash <dw_trace_info> -{ - static inline hashval_t hash (const dw_trace_info *); - static inline bool equal (const dw_trace_info *, const dw_trace_info *); -}; - -inline hashval_t -trace_info_hasher::hash (const dw_trace_info *ti) -{ - return INSN_UID (ti->head); -} - -inline bool -trace_info_hasher::equal (const dw_trace_info *a, const dw_trace_info *b) -{ - return a->head == b->head; -} - - -/* The variables making up the pseudo-cfg, as described above. */ -static vec<dw_trace_info> trace_info; -static vec<dw_trace_info *> trace_work_list; -static hash_table<trace_info_hasher> *trace_index; - -/* A vector of call frame insns for the CIE. */ -cfi_vec cie_cfi_vec; - -/* The state of the first row of the FDE table, which includes the - state provided by the CIE. */ -static GTY(()) dw_cfi_row *cie_cfi_row; - -static GTY(()) reg_saved_in_data *cie_return_save; - -static GTY(()) unsigned long dwarf2out_cfi_label_num; - -/* The insn after which a new CFI note should be emitted. */ -static rtx_insn *add_cfi_insn; - -/* When non-null, add_cfi will add the CFI to this vector. */ -static cfi_vec *add_cfi_vec; - -/* The current instruction trace. */ -static dw_trace_info *cur_trace; - -/* The current, i.e. most recently generated, row of the CFI table. */ -static dw_cfi_row *cur_row; - -/* A copy of the current CFA, for use during the processing of a - single insn. */ -static dw_cfa_location *cur_cfa; - -/* We delay emitting a register save until either (a) we reach the end - of the prologue or (b) the register is clobbered. This clusters - register saves so that there are fewer pc advances. */ - -struct queued_reg_save { - rtx reg; - rtx saved_reg; - poly_int64_pod cfa_offset; -}; - - -static vec<queued_reg_save> queued_reg_saves; - -/* True if any CFI directives were emitted at the current insn. */ -static bool any_cfis_emitted; - -/* Short-hand for commonly used register numbers. */ -static struct cfa_reg dw_stack_pointer_regnum; -static struct cfa_reg dw_frame_pointer_regnum; - -/* Hook used by __throw. */ - -rtx -expand_builtin_dwarf_sp_column (void) -{ - unsigned int dwarf_regnum = DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM); - return GEN_INT (DWARF2_FRAME_REG_OUT (dwarf_regnum, 1)); -} - -/* MEM is a memory reference for the register size table, each element of - which has mode MODE. Initialize column C as a return address column. */ - -static void -init_return_column_size (scalar_int_mode mode, rtx mem, unsigned int c) -{ - HOST_WIDE_INT offset = c * GET_MODE_SIZE (mode); - HOST_WIDE_INT size = GET_MODE_SIZE (Pmode); - emit_move_insn (adjust_address (mem, mode, offset), - gen_int_mode (size, mode)); -} - -/* Datastructure used by expand_builtin_init_dwarf_reg_sizes and - init_one_dwarf_reg_size to communicate on what has been done by the - latter. */ - -struct init_one_dwarf_reg_state -{ - /* Whether the dwarf return column was initialized. */ - bool wrote_return_column; - - /* For each hard register REGNO, whether init_one_dwarf_reg_size - was given REGNO to process already. */ - bool processed_regno [FIRST_PSEUDO_REGISTER]; - -}; - -/* Helper for expand_builtin_init_dwarf_reg_sizes. Generate code to - initialize the dwarf register size table entry corresponding to register - REGNO in REGMODE. TABLE is the table base address, SLOTMODE is the mode to - use for the size entry to initialize, and INIT_STATE is the communication - datastructure conveying what we're doing to our caller. */ - -static -void init_one_dwarf_reg_size (int regno, machine_mode regmode, - rtx table, machine_mode slotmode, - init_one_dwarf_reg_state *init_state) -{ - const unsigned int dnum = DWARF_FRAME_REGNUM (regno); - const unsigned int rnum = DWARF2_FRAME_REG_OUT (dnum, 1); - const unsigned int dcol = DWARF_REG_TO_UNWIND_COLUMN (rnum); - - poly_int64 slotoffset = dcol * GET_MODE_SIZE (slotmode); - poly_int64 regsize = GET_MODE_SIZE (regmode); - - init_state->processed_regno[regno] = true; - - if (rnum >= DWARF_FRAME_REGISTERS) - return; - - if (dnum == DWARF_FRAME_RETURN_COLUMN) - { - if (regmode == VOIDmode) - return; - init_state->wrote_return_column = true; - } - - /* ??? When is this true? Should it be a test based on DCOL instead? */ - if (maybe_lt (slotoffset, 0)) - return; - - emit_move_insn (adjust_address (table, slotmode, slotoffset), - gen_int_mode (regsize, slotmode)); -} - -/* Generate code to initialize the dwarf register size table located - at the provided ADDRESS. */ - -void -expand_builtin_init_dwarf_reg_sizes (tree address) -{ - unsigned int i; - scalar_int_mode mode = SCALAR_INT_TYPE_MODE (char_type_node); - rtx addr = expand_normal (address); - rtx mem = gen_rtx_MEM (BLKmode, addr); - - init_one_dwarf_reg_state init_state; - - memset ((char *)&init_state, 0, sizeof (init_state)); - - for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - { - machine_mode save_mode; - rtx span; - - /* No point in processing a register multiple times. This could happen - with register spans, e.g. when a reg is first processed as a piece of - a span, then as a register on its own later on. */ - - if (init_state.processed_regno[i]) - continue; - - save_mode = targetm.dwarf_frame_reg_mode (i); - span = targetm.dwarf_register_span (gen_rtx_REG (save_mode, i)); - - if (!span) - init_one_dwarf_reg_size (i, save_mode, mem, mode, &init_state); - else - { - for (int si = 0; si < XVECLEN (span, 0); si++) - { - rtx reg = XVECEXP (span, 0, si); - - init_one_dwarf_reg_size - (REGNO (reg), GET_MODE (reg), mem, mode, &init_state); - } - } - } - - if (!init_state.wrote_return_column) - init_return_column_size (mode, mem, DWARF_FRAME_RETURN_COLUMN); - -#ifdef DWARF_ALT_FRAME_RETURN_COLUMN - init_return_column_size (mode, mem, DWARF_ALT_FRAME_RETURN_COLUMN); -#endif - - targetm.init_dwarf_reg_sizes_extra (address); -} - - -static dw_trace_info * -get_trace_info (rtx_insn *insn) -{ - dw_trace_info dummy; - dummy.head = insn; - return trace_index->find_with_hash (&dummy, INSN_UID (insn)); -} - -static bool -save_point_p (rtx_insn *insn) -{ - /* Labels, except those that are really jump tables. */ - if (LABEL_P (insn)) - return inside_basic_block_p (insn); - - /* We split traces at the prologue/epilogue notes because those - are points at which the unwind info is usually stable. This - makes it easier to find spots with identical unwind info so - that we can use remember/restore_state opcodes. */ - if (NOTE_P (insn)) - switch (NOTE_KIND (insn)) - { - case NOTE_INSN_PROLOGUE_END: - case NOTE_INSN_EPILOGUE_BEG: - return true; - } - - return false; -} - -/* Divide OFF by DWARF_CIE_DATA_ALIGNMENT, asserting no remainder. */ - -static inline HOST_WIDE_INT -div_data_align (HOST_WIDE_INT off) -{ - HOST_WIDE_INT r = off / DWARF_CIE_DATA_ALIGNMENT; - gcc_assert (r * DWARF_CIE_DATA_ALIGNMENT == off); - return r; -} - -/* Return true if we need a signed version of a given opcode - (e.g. DW_CFA_offset_extended_sf vs DW_CFA_offset_extended). */ - -static inline bool -need_data_align_sf_opcode (HOST_WIDE_INT off) -{ - return DWARF_CIE_DATA_ALIGNMENT < 0 ? off > 0 : off < 0; -} - -/* Return a pointer to a newly allocated Call Frame Instruction. */ - -static inline dw_cfi_ref -new_cfi (void) -{ - dw_cfi_ref cfi = ggc_alloc<dw_cfi_node> (); - - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; - cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; - - return cfi; -} - -/* Return a newly allocated CFI row, with no defined data. */ - -static dw_cfi_row * -new_cfi_row (void) -{ - dw_cfi_row *row = ggc_cleared_alloc<dw_cfi_row> (); - - row->cfa.reg.set_by_dwreg (INVALID_REGNUM); - - return row; -} - -/* Return a copy of an existing CFI row. */ - -static dw_cfi_row * -copy_cfi_row (dw_cfi_row *src) -{ - dw_cfi_row *dst = ggc_alloc<dw_cfi_row> (); - - *dst = *src; - dst->reg_save = vec_safe_copy (src->reg_save); - - return dst; -} - -/* Return a copy of an existing CFA location. */ - -static dw_cfa_location * -copy_cfa (dw_cfa_location *src) -{ - dw_cfa_location *dst = ggc_alloc<dw_cfa_location> (); - *dst = *src; - return dst; -} - -/* Generate a new label for the CFI info to refer to. */ - -static char * -dwarf2out_cfi_label (void) -{ - int num = dwarf2out_cfi_label_num++; - char label[20]; - - ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", num); - - return xstrdup (label); -} - -/* Add CFI either to the current insn stream or to a vector, or both. */ - -static void -add_cfi (dw_cfi_ref cfi) -{ - any_cfis_emitted = true; - - if (add_cfi_insn != NULL) - { - add_cfi_insn = emit_note_after (NOTE_INSN_CFI, add_cfi_insn); - NOTE_CFI (add_cfi_insn) = cfi; - } - - if (add_cfi_vec != NULL) - vec_safe_push (*add_cfi_vec, cfi); -} - -static void -add_cfi_args_size (poly_int64 size) -{ - /* We don't yet have a representation for polynomial sizes. */ - HOST_WIDE_INT const_size = size.to_constant (); - - dw_cfi_ref cfi = new_cfi (); - - /* While we can occasionally have args_size < 0 internally, this state - should not persist at a point we actually need an opcode. */ - gcc_assert (const_size >= 0); - - cfi->dw_cfi_opc = DW_CFA_GNU_args_size; - cfi->dw_cfi_oprnd1.dw_cfi_offset = const_size; - - add_cfi (cfi); -} - -static void -add_cfi_restore (unsigned reg) -{ - dw_cfi_ref cfi = new_cfi (); - - cfi->dw_cfi_opc = (reg & ~0x3f ? DW_CFA_restore_extended : DW_CFA_restore); - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; - - add_cfi (cfi); -} - -/* Perform ROW->REG_SAVE[COLUMN] = CFI. CFI may be null, indicating - that the register column is no longer saved. */ - -static void -update_row_reg_save (dw_cfi_row *row, unsigned column, dw_cfi_ref cfi) -{ - if (vec_safe_length (row->reg_save) <= column) - vec_safe_grow_cleared (row->reg_save, column + 1, true); - (*row->reg_save)[column] = cfi; -} - -/* This function fills in aa dw_cfa_location structure from a dwarf location - descriptor sequence. */ - -static void -get_cfa_from_loc_descr (dw_cfa_location *cfa, struct dw_loc_descr_node *loc) -{ - struct dw_loc_descr_node *ptr; - cfa->offset = 0; - cfa->base_offset = 0; - cfa->indirect = 0; - cfa->reg.set_by_dwreg (INVALID_REGNUM); - - for (ptr = loc; ptr != NULL; ptr = ptr->dw_loc_next) - { - enum dwarf_location_atom op = ptr->dw_loc_opc; - - switch (op) - { - case DW_OP_reg0: - case DW_OP_reg1: - case DW_OP_reg2: - case DW_OP_reg3: - case DW_OP_reg4: - case DW_OP_reg5: - case DW_OP_reg6: - case DW_OP_reg7: - case DW_OP_reg8: - case DW_OP_reg9: - case DW_OP_reg10: - case DW_OP_reg11: - case DW_OP_reg12: - case DW_OP_reg13: - case DW_OP_reg14: - case DW_OP_reg15: - case DW_OP_reg16: - case DW_OP_reg17: - case DW_OP_reg18: - case DW_OP_reg19: - case DW_OP_reg20: - case DW_OP_reg21: - case DW_OP_reg22: - case DW_OP_reg23: - case DW_OP_reg24: - case DW_OP_reg25: - case DW_OP_reg26: - case DW_OP_reg27: - case DW_OP_reg28: - case DW_OP_reg29: - case DW_OP_reg30: - case DW_OP_reg31: - cfa->reg.set_by_dwreg (op - DW_OP_reg0); - break; - case DW_OP_regx: - cfa->reg.set_by_dwreg (ptr->dw_loc_oprnd1.v.val_int); - break; - case DW_OP_breg0: - case DW_OP_breg1: - case DW_OP_breg2: - case DW_OP_breg3: - case DW_OP_breg4: - case DW_OP_breg5: - case DW_OP_breg6: - case DW_OP_breg7: - case DW_OP_breg8: - case DW_OP_breg9: - case DW_OP_breg10: - case DW_OP_breg11: - case DW_OP_breg12: - case DW_OP_breg13: - case DW_OP_breg14: - case DW_OP_breg15: - case DW_OP_breg16: - case DW_OP_breg17: - case DW_OP_breg18: - case DW_OP_breg19: - case DW_OP_breg20: - case DW_OP_breg21: - case DW_OP_breg22: - case DW_OP_breg23: - case DW_OP_breg24: - case DW_OP_breg25: - case DW_OP_breg26: - case DW_OP_breg27: - case DW_OP_breg28: - case DW_OP_breg29: - case DW_OP_breg30: - case DW_OP_breg31: - case DW_OP_bregx: - if (cfa->reg.reg == INVALID_REGNUM) - { - unsigned regno - = (op == DW_OP_bregx - ? ptr->dw_loc_oprnd1.v.val_int : op - DW_OP_breg0); - cfa->reg.set_by_dwreg (regno); - cfa->base_offset = ptr->dw_loc_oprnd1.v.val_int; - } - else - { - /* Handle case when span can cover multiple registers. We - only support the simple case of consecutive registers - all with the same size. DWARF that we are dealing with - will look something like: - <DW_OP_bregx: (r49) 0; DW_OP_const1u: 32; DW_OP_shl; - DW_OP_bregx: (r48) 0; DW_OP_plus> */ - - unsigned regno - = (op == DW_OP_bregx - ? ptr->dw_loc_oprnd1.v.val_int : op - DW_OP_breg0); - gcc_assert (regno == cfa->reg.reg - 1); - cfa->reg.span++; - /* From all the consecutive registers used, we want to set - cfa->reg.reg to lower number register. */ - cfa->reg.reg = regno; - /* The offset was the shift value. Use it to get the - span_width and then set it to 0. */ - cfa->reg.span_width = cfa->offset.to_constant () / 8; - cfa->offset = 0; - } - break; - case DW_OP_deref: - cfa->indirect = 1; - break; - case DW_OP_shl: - break; - case DW_OP_lit0: - case DW_OP_lit1: - case DW_OP_lit2: - case DW_OP_lit3: - case DW_OP_lit4: - case DW_OP_lit5: - case DW_OP_lit6: - case DW_OP_lit7: - case DW_OP_lit8: - case DW_OP_lit9: - case DW_OP_lit10: - case DW_OP_lit11: - case DW_OP_lit12: - case DW_OP_lit13: - case DW_OP_lit14: - case DW_OP_lit15: - case DW_OP_lit16: - case DW_OP_lit17: - case DW_OP_lit18: - case DW_OP_lit19: - case DW_OP_lit20: - case DW_OP_lit21: - case DW_OP_lit22: - case DW_OP_lit23: - case DW_OP_lit24: - case DW_OP_lit25: - case DW_OP_lit26: - case DW_OP_lit27: - case DW_OP_lit28: - case DW_OP_lit29: - case DW_OP_lit30: - case DW_OP_lit31: - gcc_assert (known_eq (cfa->offset, 0)); - cfa->offset = op - DW_OP_lit0; - break; - case DW_OP_const1u: - case DW_OP_const1s: - case DW_OP_const2u: - case DW_OP_const2s: - case DW_OP_const4s: - case DW_OP_const8s: - case DW_OP_constu: - case DW_OP_consts: - gcc_assert (known_eq (cfa->offset, 0)); - cfa->offset = ptr->dw_loc_oprnd1.v.val_int; - break; - case DW_OP_minus: - cfa->offset = -cfa->offset; - break; - case DW_OP_plus: - /* The offset is already in place. */ - break; - case DW_OP_plus_uconst: - cfa->offset = ptr->dw_loc_oprnd1.v.val_unsigned; - break; - default: - gcc_unreachable (); - } - } -} - -/* Find the previous value for the CFA, iteratively. CFI is the opcode - to interpret, *LOC will be updated as necessary, *REMEMBER is used for - one level of remember/restore state processing. */ - -void -lookup_cfa_1 (dw_cfi_ref cfi, dw_cfa_location *loc, dw_cfa_location *remember) -{ - switch (cfi->dw_cfi_opc) - { - case DW_CFA_def_cfa_offset: - case DW_CFA_def_cfa_offset_sf: - loc->offset = cfi->dw_cfi_oprnd1.dw_cfi_offset; - break; - case DW_CFA_def_cfa_register: - loc->reg.set_by_dwreg (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); - break; - case DW_CFA_def_cfa: - case DW_CFA_def_cfa_sf: - loc->reg.set_by_dwreg (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); - loc->offset = cfi->dw_cfi_oprnd2.dw_cfi_offset; - break; - case DW_CFA_def_cfa_expression: - if (cfi->dw_cfi_oprnd2.dw_cfi_cfa_loc) - *loc = *cfi->dw_cfi_oprnd2.dw_cfi_cfa_loc; - else - get_cfa_from_loc_descr (loc, cfi->dw_cfi_oprnd1.dw_cfi_loc); - break; - - case DW_CFA_remember_state: - gcc_assert (!remember->in_use); - *remember = *loc; - remember->in_use = 1; - break; - case DW_CFA_restore_state: - gcc_assert (remember->in_use); - *loc = *remember; - remember->in_use = 0; - break; - - default: - break; - } -} - -/* Determine if two dw_cfa_location structures define the same data. */ - -bool -cfa_equal_p (const dw_cfa_location *loc1, const dw_cfa_location *loc2) -{ - return (loc1->reg == loc2->reg - && known_eq (loc1->offset, loc2->offset) - && loc1->indirect == loc2->indirect - && (loc1->indirect == 0 - || known_eq (loc1->base_offset, loc2->base_offset))); -} - -/* Determine if two CFI operands are identical. */ - -static bool -cfi_oprnd_equal_p (enum dw_cfi_oprnd_type t, dw_cfi_oprnd *a, dw_cfi_oprnd *b) -{ - switch (t) - { - case dw_cfi_oprnd_unused: - return true; - case dw_cfi_oprnd_reg_num: - return a->dw_cfi_reg_num == b->dw_cfi_reg_num; - case dw_cfi_oprnd_offset: - return a->dw_cfi_offset == b->dw_cfi_offset; - case dw_cfi_oprnd_addr: - return (a->dw_cfi_addr == b->dw_cfi_addr - || strcmp (a->dw_cfi_addr, b->dw_cfi_addr) == 0); - case dw_cfi_oprnd_loc: - return loc_descr_equal_p (a->dw_cfi_loc, b->dw_cfi_loc); - case dw_cfi_oprnd_cfa_loc: - return cfa_equal_p (a->dw_cfi_cfa_loc, b->dw_cfi_cfa_loc); - } - gcc_unreachable (); -} - -/* Determine if two CFI entries are identical. */ - -static bool -cfi_equal_p (dw_cfi_ref a, dw_cfi_ref b) -{ - enum dwarf_call_frame_info opc; - - /* Make things easier for our callers, including missing operands. */ - if (a == b) - return true; - if (a == NULL || b == NULL) - return false; - - /* Obviously, the opcodes must match. */ - opc = a->dw_cfi_opc; - if (opc != b->dw_cfi_opc) - return false; - - /* Compare the two operands, re-using the type of the operands as - already exposed elsewhere. */ - return (cfi_oprnd_equal_p (dw_cfi_oprnd1_desc (opc), - &a->dw_cfi_oprnd1, &b->dw_cfi_oprnd1) - && cfi_oprnd_equal_p (dw_cfi_oprnd2_desc (opc), - &a->dw_cfi_oprnd2, &b->dw_cfi_oprnd2)); -} - -/* Determine if two CFI_ROW structures are identical. */ - -static bool -cfi_row_equal_p (dw_cfi_row *a, dw_cfi_row *b) -{ - size_t i, n_a, n_b, n_max; - - if (a->cfa_cfi) - { - if (!cfi_equal_p (a->cfa_cfi, b->cfa_cfi)) - return false; - } - else if (!cfa_equal_p (&a->cfa, &b->cfa)) - return false; - - n_a = vec_safe_length (a->reg_save); - n_b = vec_safe_length (b->reg_save); - n_max = MAX (n_a, n_b); - - for (i = 0; i < n_max; ++i) - { - dw_cfi_ref r_a = NULL, r_b = NULL; - - if (i < n_a) - r_a = (*a->reg_save)[i]; - if (i < n_b) - r_b = (*b->reg_save)[i]; - - if (!cfi_equal_p (r_a, r_b)) - return false; - } - - if (a->window_save != b->window_save) - return false; - - if (a->ra_mangled != b->ra_mangled) - return false; - - return true; -} - -/* The CFA is now calculated from NEW_CFA. Consider OLD_CFA in determining - what opcode to emit. Returns the CFI opcode to effect the change, or - NULL if NEW_CFA == OLD_CFA. */ - -static dw_cfi_ref -def_cfa_0 (dw_cfa_location *old_cfa, dw_cfa_location *new_cfa) -{ - dw_cfi_ref cfi; - - /* If nothing changed, no need to issue any call frame instructions. */ - if (cfa_equal_p (old_cfa, new_cfa)) - return NULL; - - cfi = new_cfi (); - - HOST_WIDE_INT const_offset; - if (new_cfa->reg == old_cfa->reg - && new_cfa->reg.span == 1 - && !new_cfa->indirect - && !old_cfa->indirect - && new_cfa->offset.is_constant (&const_offset)) - { - /* Construct a "DW_CFA_def_cfa_offset <offset>" instruction, indicating - the CFA register did not change but the offset did. The data - factoring for DW_CFA_def_cfa_offset_sf happens in output_cfi, or - in the assembler via the .cfi_def_cfa_offset directive. */ - if (const_offset < 0) - cfi->dw_cfi_opc = DW_CFA_def_cfa_offset_sf; - else - cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; - cfi->dw_cfi_oprnd1.dw_cfi_offset = const_offset; - } - else if (new_cfa->offset.is_constant () - && known_eq (new_cfa->offset, old_cfa->offset) - && old_cfa->reg.reg != INVALID_REGNUM - && new_cfa->reg.span == 1 - && !new_cfa->indirect - && !old_cfa->indirect) - { - /* Construct a "DW_CFA_def_cfa_register <register>" instruction, - indicating the CFA register has changed to <register> but the - offset has not changed. This requires the old CFA to have - been set as a register plus offset rather than a general - DW_CFA_def_cfa_expression. */ - cfi->dw_cfi_opc = DW_CFA_def_cfa_register; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = new_cfa->reg.reg; - } - else if (new_cfa->indirect == 0 - && new_cfa->offset.is_constant (&const_offset) - && new_cfa->reg.span == 1) - { - /* Construct a "DW_CFA_def_cfa <register> <offset>" instruction, - indicating the CFA register has changed to <register> with - the specified offset. The data factoring for DW_CFA_def_cfa_sf - happens in output_cfi, or in the assembler via the .cfi_def_cfa - directive. */ - if (const_offset < 0) - cfi->dw_cfi_opc = DW_CFA_def_cfa_sf; - else - cfi->dw_cfi_opc = DW_CFA_def_cfa; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = new_cfa->reg.reg; - cfi->dw_cfi_oprnd2.dw_cfi_offset = const_offset; - } - else - { - /* Construct a DW_CFA_def_cfa_expression instruction to - calculate the CFA using a full location expression since no - register-offset pair is available. */ - struct dw_loc_descr_node *loc_list; - - cfi->dw_cfi_opc = DW_CFA_def_cfa_expression; - loc_list = build_cfa_loc (new_cfa, 0); - cfi->dw_cfi_oprnd1.dw_cfi_loc = loc_list; - if (!new_cfa->offset.is_constant () - || !new_cfa->base_offset.is_constant ()) - /* It's hard to reconstruct the CFA location for a polynomial - expression, so just cache it instead. */ - cfi->dw_cfi_oprnd2.dw_cfi_cfa_loc = copy_cfa (new_cfa); - else - cfi->dw_cfi_oprnd2.dw_cfi_cfa_loc = NULL; - } - - return cfi; -} - -/* Similarly, but take OLD_CFA from CUR_ROW, and update it after the fact. */ - -static void -def_cfa_1 (dw_cfa_location *new_cfa) -{ - dw_cfi_ref cfi; - - if (cur_trace->cfa_store.reg == new_cfa->reg && new_cfa->indirect == 0) - cur_trace->cfa_store.offset = new_cfa->offset; - - cfi = def_cfa_0 (&cur_row->cfa, new_cfa); - if (cfi) - { - cur_row->cfa = *new_cfa; - cur_row->cfa_cfi = (cfi->dw_cfi_opc == DW_CFA_def_cfa_expression - ? cfi : NULL); - - add_cfi (cfi); - } -} - -/* Add the CFI for saving a register. REG is the CFA column number. - If SREG is INVALID_REGISTER, the register is saved at OFFSET from the CFA; - otherwise it is saved in SREG. */ - -static void -reg_save (unsigned int reg, struct cfa_reg sreg, poly_int64 offset) -{ - dw_fde_ref fde = cfun ? cfun->fde : NULL; - dw_cfi_ref cfi = new_cfi (); - - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; - - if (sreg.reg == INVALID_REGNUM) - { - HOST_WIDE_INT const_offset; - /* When stack is aligned, store REG using DW_CFA_expression with FP. */ - if (fde && fde->stack_realign) - { - cfi->dw_cfi_opc = DW_CFA_expression; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; - cfi->dw_cfi_oprnd2.dw_cfi_loc - = build_cfa_aligned_loc (&cur_row->cfa, offset, - fde->stack_realignment); - } - else if (offset.is_constant (&const_offset)) - { - if (need_data_align_sf_opcode (const_offset)) - cfi->dw_cfi_opc = DW_CFA_offset_extended_sf; - else if (reg & ~0x3f) - cfi->dw_cfi_opc = DW_CFA_offset_extended; - else - cfi->dw_cfi_opc = DW_CFA_offset; - cfi->dw_cfi_oprnd2.dw_cfi_offset = const_offset; - } - else - { - cfi->dw_cfi_opc = DW_CFA_expression; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; - cfi->dw_cfi_oprnd2.dw_cfi_loc - = build_cfa_loc (&cur_row->cfa, offset); - } - } - else if (sreg.reg == reg) - { - /* While we could emit something like DW_CFA_same_value or - DW_CFA_restore, we never expect to see something like that - in a prologue. This is more likely to be a bug. A backend - can always bypass this by using REG_CFA_RESTORE directly. */ - gcc_unreachable (); - } - else if (sreg.span > 1) - { - cfi->dw_cfi_opc = DW_CFA_expression; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; - cfi->dw_cfi_oprnd2.dw_cfi_loc = build_span_loc (sreg); - } - else - { - cfi->dw_cfi_opc = DW_CFA_register; - cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg.reg; - } - - add_cfi (cfi); - update_row_reg_save (cur_row, reg, cfi); -} - -/* A subroutine of scan_trace. Check INSN for a REG_ARGS_SIZE note - and adjust data structures to match. */ - -static void -notice_args_size (rtx_insn *insn) -{ - poly_int64 args_size, delta; - rtx note; - - note = find_reg_note (insn, REG_ARGS_SIZE, NULL); - if (note == NULL) - return; - - if (!cur_trace->eh_head) - cur_trace->args_size_defined_for_eh = true; - - args_size = get_args_size (note); - delta = args_size - cur_trace->end_true_args_size; - if (known_eq (delta, 0)) - return; - - cur_trace->end_true_args_size = args_size; - - /* If the CFA is computed off the stack pointer, then we must adjust - the computation of the CFA as well. */ - if (cur_cfa->reg == dw_stack_pointer_regnum) - { - gcc_assert (!cur_cfa->indirect); - - /* Convert a change in args_size (always a positive in the - direction of stack growth) to a change in stack pointer. */ - if (!STACK_GROWS_DOWNWARD) - delta = -delta; - - cur_cfa->offset += delta; - } -} - -/* A subroutine of scan_trace. INSN is can_throw_internal. Update the - data within the trace related to EH insns and args_size. */ - -static void -notice_eh_throw (rtx_insn *insn) -{ - poly_int64 args_size = cur_trace->end_true_args_size; - if (cur_trace->eh_head == NULL) - { - cur_trace->eh_head = insn; - cur_trace->beg_delay_args_size = args_size; - cur_trace->end_delay_args_size = args_size; - } - else if (maybe_ne (cur_trace->end_delay_args_size, args_size)) - { - cur_trace->end_delay_args_size = args_size; - - /* ??? If the CFA is the stack pointer, search backward for the last - CFI note and insert there. Given that the stack changed for the - args_size change, there *must* be such a note in between here and - the last eh insn. */ - add_cfi_args_size (args_size); - } -} - -/* Short-hand inline for the very common D_F_R (REGNO (x)) operation. */ -/* ??? This ought to go into dwarf2out.h, except that dwarf2out.h is - used in places where rtl is prohibited. */ - -static inline unsigned -dwf_regno (const_rtx reg) -{ - gcc_assert (REGNO (reg) < FIRST_PSEUDO_REGISTER); - return DWARF_FRAME_REGNUM (REGNO (reg)); -} - -/* Like dwf_regno, but when the value can span multiple registers. */ - -static struct cfa_reg -dwf_cfa_reg (rtx reg) -{ - struct cfa_reg result; - - result.reg = dwf_regno (reg); - result.span = 1; - result.span_width = 0; - - rtx span = targetm.dwarf_register_span (reg); - if (span) - { - /* We only support the simple case of consecutive registers all with the - same size. */ - result.span = XVECLEN (span, 0); - result.span_width = GET_MODE_SIZE (GET_MODE (XVECEXP (span, 0, 0))) - .to_constant (); - - if (CHECKING_P) - { - /* Ensure that the above assumption is accurate. */ - for (unsigned int i = 0; i < result.span; i++) - { - gcc_assert (GET_MODE_SIZE (GET_MODE (XVECEXP (span, 0, i))) - .to_constant () == result.span_width); - gcc_assert (REG_P (XVECEXP (span, 0, i))); - gcc_assert (dwf_regno (XVECEXP (span, 0, i)) == result.reg + i); - } - } - } - - return result; -} - -/* More efficient comparisons that don't call targetm.dwarf_register_span - unnecessarily. These cfa_reg vs. rtx comparisons should be done at - least for call-saved REGs that might not be CFA related (like stack - pointer, hard frame pointer or DRAP registers are), in other cases it is - just a compile time and memory optimization. */ - -static bool -operator== (cfa_reg &cfa, rtx reg) -{ - unsigned int regno = dwf_regno (reg); - if (cfa.reg != regno) - return false; - struct cfa_reg other = dwf_cfa_reg (reg); - return cfa == other; -} - -static inline bool -operator!= (cfa_reg &cfa, rtx reg) -{ - return !(cfa == reg); -} - -/* Compare X and Y for equivalence. The inputs may be REGs or PC_RTX. */ - -static bool -compare_reg_or_pc (rtx x, rtx y) -{ - if (REG_P (x) && REG_P (y)) - return REGNO (x) == REGNO (y); - return x == y; -} - -/* Record SRC as being saved in DEST. DEST may be null to delete an - existing entry. SRC may be a register or PC_RTX. */ - -static void -record_reg_saved_in_reg (rtx dest, rtx src) -{ - reg_saved_in_data *elt; - size_t i; - - FOR_EACH_VEC_ELT (cur_trace->regs_saved_in_regs, i, elt) - if (compare_reg_or_pc (elt->orig_reg, src)) - { - if (dest == NULL) - cur_trace->regs_saved_in_regs.unordered_remove (i); - else - elt->saved_in_reg = dest; - return; - } - - if (dest == NULL) - return; - - reg_saved_in_data e = {src, dest}; - cur_trace->regs_saved_in_regs.safe_push (e); -} - -/* Add an entry to QUEUED_REG_SAVES saying that REG is now saved at - SREG, or if SREG is NULL then it is saved at OFFSET to the CFA. */ - -static void -queue_reg_save (rtx reg, rtx sreg, poly_int64 offset) -{ - queued_reg_save *q; - queued_reg_save e = {reg, sreg, offset}; - size_t i; - - /* Duplicates waste space, but it's also necessary to remove them - for correctness, since the queue gets output in reverse order. */ - FOR_EACH_VEC_ELT (queued_reg_saves, i, q) - if (compare_reg_or_pc (q->reg, reg)) - { - *q = e; - return; - } - - queued_reg_saves.safe_push (e); -} - -/* Output all the entries in QUEUED_REG_SAVES. */ - -static void -dwarf2out_flush_queued_reg_saves (void) -{ - queued_reg_save *q; - size_t i; - - FOR_EACH_VEC_ELT (queued_reg_saves, i, q) - { - unsigned int reg; - struct cfa_reg sreg; - - record_reg_saved_in_reg (q->saved_reg, q->reg); - - if (q->reg == pc_rtx) - reg = DWARF_FRAME_RETURN_COLUMN; - else - reg = dwf_regno (q->reg); - if (q->saved_reg) - sreg = dwf_cfa_reg (q->saved_reg); - else - sreg.set_by_dwreg (INVALID_REGNUM); - reg_save (reg, sreg, q->cfa_offset); - } - - queued_reg_saves.truncate (0); -} - -/* Does INSN clobber any register which QUEUED_REG_SAVES lists a saved - location for? Or, does it clobber a register which we've previously - said that some other register is saved in, and for which we now - have a new location for? */ - -static bool -clobbers_queued_reg_save (const_rtx insn) -{ - queued_reg_save *q; - size_t iq; - - FOR_EACH_VEC_ELT (queued_reg_saves, iq, q) - { - size_t ir; - reg_saved_in_data *rir; - - if (modified_in_p (q->reg, insn)) - return true; - - FOR_EACH_VEC_ELT (cur_trace->regs_saved_in_regs, ir, rir) - if (compare_reg_or_pc (q->reg, rir->orig_reg) - && modified_in_p (rir->saved_in_reg, insn)) - return true; - } - - return false; -} - -/* What register, if any, is currently saved in REG? */ - -static rtx -reg_saved_in (rtx reg) -{ - unsigned int regn = REGNO (reg); - queued_reg_save *q; - reg_saved_in_data *rir; - size_t i; - - FOR_EACH_VEC_ELT (queued_reg_saves, i, q) - if (q->saved_reg && regn == REGNO (q->saved_reg)) - return q->reg; - - FOR_EACH_VEC_ELT (cur_trace->regs_saved_in_regs, i, rir) - if (regn == REGNO (rir->saved_in_reg)) - return rir->orig_reg; - - return NULL_RTX; -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_DEF_CFA note. */ - -static void -dwarf2out_frame_debug_def_cfa (rtx pat) -{ - memset (cur_cfa, 0, sizeof (*cur_cfa)); - - pat = strip_offset (pat, &cur_cfa->offset); - if (MEM_P (pat)) - { - cur_cfa->indirect = 1; - pat = strip_offset (XEXP (pat, 0), &cur_cfa->base_offset); - } - /* ??? If this fails, we could be calling into the _loc functions to - define a full expression. So far no port does that. */ - gcc_assert (REG_P (pat)); - cur_cfa->reg = dwf_cfa_reg (pat); -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_ADJUST_CFA note. */ - -static void -dwarf2out_frame_debug_adjust_cfa (rtx pat) -{ - rtx src, dest; - - gcc_assert (GET_CODE (pat) == SET); - dest = XEXP (pat, 0); - src = XEXP (pat, 1); - - switch (GET_CODE (src)) - { - case PLUS: - gcc_assert (cur_cfa->reg == XEXP (src, 0)); - cur_cfa->offset -= rtx_to_poly_int64 (XEXP (src, 1)); - break; - - case REG: - break; - - default: - gcc_unreachable (); - } - - cur_cfa->reg = dwf_cfa_reg (dest); - gcc_assert (cur_cfa->indirect == 0); -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_OFFSET note. */ - -static void -dwarf2out_frame_debug_cfa_offset (rtx set) -{ - poly_int64 offset; - rtx src, addr, span; - unsigned int sregno; - - src = XEXP (set, 1); - addr = XEXP (set, 0); - gcc_assert (MEM_P (addr)); - addr = XEXP (addr, 0); - - /* As documented, only consider extremely simple addresses. */ - switch (GET_CODE (addr)) - { - case REG: - gcc_assert (cur_cfa->reg == addr); - offset = -cur_cfa->offset; - break; - case PLUS: - gcc_assert (cur_cfa->reg == XEXP (addr, 0)); - offset = rtx_to_poly_int64 (XEXP (addr, 1)) - cur_cfa->offset; - break; - default: - gcc_unreachable (); - } - - if (src == pc_rtx) - { - span = NULL; - sregno = DWARF_FRAME_RETURN_COLUMN; - } - else - { - span = targetm.dwarf_register_span (src); - sregno = dwf_regno (src); - } - - /* ??? We'd like to use queue_reg_save, but we need to come up with - a different flushing heuristic for epilogues. */ - struct cfa_reg invalid; - invalid.set_by_dwreg (INVALID_REGNUM); - if (!span) - reg_save (sregno, invalid, offset); - else - { - /* We have a PARALLEL describing where the contents of SRC live. - Adjust the offset for each piece of the PARALLEL. */ - poly_int64 span_offset = offset; - - gcc_assert (GET_CODE (span) == PARALLEL); - - const int par_len = XVECLEN (span, 0); - for (int par_index = 0; par_index < par_len; par_index++) - { - rtx elem = XVECEXP (span, 0, par_index); - sregno = dwf_regno (src); - reg_save (sregno, invalid, span_offset); - span_offset += GET_MODE_SIZE (GET_MODE (elem)); - } - } -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_REGISTER note. */ - -static void -dwarf2out_frame_debug_cfa_register (rtx set) -{ - rtx src, dest; - unsigned sregno; - struct cfa_reg dregno; - - src = XEXP (set, 1); - dest = XEXP (set, 0); - - record_reg_saved_in_reg (dest, src); - if (src == pc_rtx) - sregno = DWARF_FRAME_RETURN_COLUMN; - else - sregno = dwf_regno (src); - - dregno = dwf_cfa_reg (dest); - - /* ??? We'd like to use queue_reg_save, but we need to come up with - a different flushing heuristic for epilogues. */ - reg_save (sregno, dregno, 0); -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_EXPRESSION note. */ - -static void -dwarf2out_frame_debug_cfa_expression (rtx set) -{ - rtx src, dest, span; - dw_cfi_ref cfi = new_cfi (); - unsigned regno; - - dest = SET_DEST (set); - src = SET_SRC (set); - - gcc_assert (REG_P (src)); - gcc_assert (MEM_P (dest)); - - span = targetm.dwarf_register_span (src); - gcc_assert (!span); - - regno = dwf_regno (src); - - cfi->dw_cfi_opc = DW_CFA_expression; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = regno; - cfi->dw_cfi_oprnd2.dw_cfi_loc - = mem_loc_descriptor (XEXP (dest, 0), get_address_mode (dest), - GET_MODE (dest), VAR_INIT_STATUS_INITIALIZED); - - /* ??? We'd like to use queue_reg_save, were the interface different, - and, as above, we could manage flushing for epilogues. */ - add_cfi (cfi); - update_row_reg_save (cur_row, regno, cfi); -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_VAL_EXPRESSION - note. */ - -static void -dwarf2out_frame_debug_cfa_val_expression (rtx set) -{ - rtx dest = SET_DEST (set); - gcc_assert (REG_P (dest)); - - rtx span = targetm.dwarf_register_span (dest); - gcc_assert (!span); - - rtx src = SET_SRC (set); - dw_cfi_ref cfi = new_cfi (); - cfi->dw_cfi_opc = DW_CFA_val_expression; - cfi->dw_cfi_oprnd1.dw_cfi_reg_num = dwf_regno (dest); - cfi->dw_cfi_oprnd2.dw_cfi_loc - = mem_loc_descriptor (src, GET_MODE (src), - GET_MODE (dest), VAR_INIT_STATUS_INITIALIZED); - add_cfi (cfi); - update_row_reg_save (cur_row, dwf_regno (dest), cfi); -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_RESTORE note. */ - -static void -dwarf2out_frame_debug_cfa_restore (rtx reg) -{ - gcc_assert (REG_P (reg)); - - rtx span = targetm.dwarf_register_span (reg); - if (!span) - { - unsigned int regno = dwf_regno (reg); - add_cfi_restore (regno); - update_row_reg_save (cur_row, regno, NULL); - } - else - { - /* We have a PARALLEL describing where the contents of REG live. - Restore the register for each piece of the PARALLEL. */ - gcc_assert (GET_CODE (span) == PARALLEL); - - const int par_len = XVECLEN (span, 0); - for (int par_index = 0; par_index < par_len; par_index++) - { - reg = XVECEXP (span, 0, par_index); - gcc_assert (REG_P (reg)); - unsigned int regno = dwf_regno (reg); - add_cfi_restore (regno); - update_row_reg_save (cur_row, regno, NULL); - } - } -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_WINDOW_SAVE. - - ??? Perhaps we should note in the CIE where windows are saved (instead - of assuming 0(cfa)) and what registers are in the window. */ - -static void -dwarf2out_frame_debug_cfa_window_save (void) -{ - dw_cfi_ref cfi = new_cfi (); - - cfi->dw_cfi_opc = DW_CFA_GNU_window_save; - add_cfi (cfi); - cur_row->window_save = true; -} - -/* A subroutine of dwarf2out_frame_debug, process a REG_CFA_TOGGLE_RA_MANGLE. - Note: DW_CFA_GNU_window_save dwarf opcode is reused for toggling RA mangle - state, this is a target specific operation on AArch64 and can only be used - on other targets if they don't use the window save operation otherwise. */ - -static void -dwarf2out_frame_debug_cfa_toggle_ra_mangle (void) -{ - dw_cfi_ref cfi = new_cfi (); - - cfi->dw_cfi_opc = DW_CFA_GNU_window_save; - add_cfi (cfi); - cur_row->ra_mangled = !cur_row->ra_mangled; -} - -/* Record call frame debugging information for an expression EXPR, - which either sets SP or FP (adjusting how we calculate the frame - address) or saves a register to the stack or another register. - LABEL indicates the address of EXPR. - - This function encodes a state machine mapping rtxes to actions on - cfa, cfa_store, and cfa_temp.reg. We describe these rules so - users need not read the source code. - - The High-Level Picture - - Changes in the register we use to calculate the CFA: Currently we - assume that if you copy the CFA register into another register, we - should take the other one as the new CFA register; this seems to - work pretty well. If it's wrong for some target, it's simple - enough not to set RTX_FRAME_RELATED_P on the insn in question. - - Changes in the register we use for saving registers to the stack: - This is usually SP, but not always. Again, we deduce that if you - copy SP into another register (and SP is not the CFA register), - then the new register is the one we will be using for register - saves. This also seems to work. - - Register saves: There's not much guesswork about this one; if - RTX_FRAME_RELATED_P is set on an insn which modifies memory, it's a - register save, and the register used to calculate the destination - had better be the one we think we're using for this purpose. - It's also assumed that a copy from a call-saved register to another - register is saving that register if RTX_FRAME_RELATED_P is set on - that instruction. If the copy is from a call-saved register to - the *same* register, that means that the register is now the same - value as in the caller. - - Except: If the register being saved is the CFA register, and the - offset is nonzero, we are saving the CFA, so we assume we have to - use DW_CFA_def_cfa_expression. If the offset is 0, we assume that - the intent is to save the value of SP from the previous frame. - - In addition, if a register has previously been saved to a different - register, - - Invariants / Summaries of Rules - - cfa current rule for calculating the CFA. It usually - consists of a register and an offset. This is - actually stored in *cur_cfa, but abbreviated - for the purposes of this documentation. - cfa_store register used by prologue code to save things to the stack - cfa_store.offset is the offset from the value of - cfa_store.reg to the actual CFA - cfa_temp register holding an integral value. cfa_temp.offset - stores the value, which will be used to adjust the - stack pointer. cfa_temp is also used like cfa_store, - to track stores to the stack via fp or a temp reg. - - Rules 1- 4: Setting a register's value to cfa.reg or an expression - with cfa.reg as the first operand changes the cfa.reg and its - cfa.offset. Rule 1 and 4 also set cfa_temp.reg and - cfa_temp.offset. - - Rules 6- 9: Set a non-cfa.reg register value to a constant or an - expression yielding a constant. This sets cfa_temp.reg - and cfa_temp.offset. - - Rule 5: Create a new register cfa_store used to save items to the - stack. - - Rules 10-14: Save a register to the stack. Define offset as the - difference of the original location and cfa_store's - location (or cfa_temp's location if cfa_temp is used). - - Rules 16-20: If AND operation happens on sp in prologue, we assume - stack is realigned. We will use a group of DW_OP_XXX - expressions to represent the location of the stored - register instead of CFA+offset. - - The Rules - - "{a,b}" indicates a choice of a xor b. - "<reg>:cfa.reg" indicates that <reg> must equal cfa.reg. - - Rule 1: - (set <reg1> <reg2>:cfa.reg) - effects: cfa.reg = <reg1> - cfa.offset unchanged - cfa_temp.reg = <reg1> - cfa_temp.offset = cfa.offset - - Rule 2: - (set sp ({minus,plus,losum} {sp,fp}:cfa.reg - {<const_int>,<reg>:cfa_temp.reg})) - effects: cfa.reg = sp if fp used - cfa.offset += {+/- <const_int>, cfa_temp.offset} if cfa.reg==sp - cfa_store.offset += {+/- <const_int>, cfa_temp.offset} - if cfa_store.reg==sp - - Rule 3: - (set fp ({minus,plus,losum} <reg>:cfa.reg <const_int>)) - effects: cfa.reg = fp - cfa_offset += +/- <const_int> - - Rule 4: - (set <reg1> ({plus,losum} <reg2>:cfa.reg <const_int>)) - constraints: <reg1> != fp - <reg1> != sp - effects: cfa.reg = <reg1> - cfa_temp.reg = <reg1> - cfa_temp.offset = cfa.offset - - Rule 5: - (set <reg1> (plus <reg2>:cfa_temp.reg sp:cfa.reg)) - constraints: <reg1> != fp - <reg1> != sp - effects: cfa_store.reg = <reg1> - cfa_store.offset = cfa.offset - cfa_temp.offset - - Rule 6: - (set <reg> <const_int>) - effects: cfa_temp.reg = <reg> - cfa_temp.offset = <const_int> - - Rule 7: - (set <reg1>:cfa_temp.reg (ior <reg2>:cfa_temp.reg <const_int>)) - effects: cfa_temp.reg = <reg1> - cfa_temp.offset |= <const_int> - - Rule 8: - (set <reg> (high <exp>)) - effects: none - - Rule 9: - (set <reg> (lo_sum <exp> <const_int>)) - effects: cfa_temp.reg = <reg> - cfa_temp.offset = <const_int> - - Rule 10: - (set (mem ({pre,post}_modify sp:cfa_store (???? <reg1> <const_int>))) <reg2>) - effects: cfa_store.offset -= <const_int> - cfa.offset = cfa_store.offset if cfa.reg == sp - cfa.reg = sp - cfa.base_offset = -cfa_store.offset - - Rule 11: - (set (mem ({pre_inc,pre_dec,post_dec} sp:cfa_store.reg)) <reg>) - effects: cfa_store.offset += -/+ mode_size(mem) - cfa.offset = cfa_store.offset if cfa.reg == sp - cfa.reg = sp - cfa.base_offset = -cfa_store.offset - - Rule 12: - (set (mem ({minus,plus,losum} <reg1>:{cfa_store,cfa_temp} <const_int>)) - - <reg2>) - effects: cfa.reg = <reg1> - cfa.base_offset = -/+ <const_int> - {cfa_store,cfa_temp}.offset - - Rule 13: - (set (mem <reg1>:{cfa_store,cfa_temp}) <reg2>) - effects: cfa.reg = <reg1> - cfa.base_offset = -{cfa_store,cfa_temp}.offset - - Rule 14: - (set (mem (post_inc <reg1>:cfa_temp <const_int>)) <reg2>) - effects: cfa.reg = <reg1> - cfa.base_offset = -cfa_temp.offset - cfa_temp.offset -= mode_size(mem) - - Rule 15: - (set <reg> {unspec, unspec_volatile}) - effects: target-dependent - - Rule 16: - (set sp (and: sp <const_int>)) - constraints: cfa_store.reg == sp - effects: cfun->fde.stack_realign = 1 - cfa_store.offset = 0 - fde->drap_reg = cfa.reg if cfa.reg != sp and cfa.reg != fp - - Rule 17: - (set (mem ({pre_inc, pre_dec} sp)) (mem (plus (cfa.reg) (const_int)))) - effects: cfa_store.offset += -/+ mode_size(mem) - - Rule 18: - (set (mem ({pre_inc, pre_dec} sp)) fp) - constraints: fde->stack_realign == 1 - effects: cfa_store.offset = 0 - cfa.reg != HARD_FRAME_POINTER_REGNUM - - Rule 19: - (set (mem ({pre_inc, pre_dec} sp)) cfa.reg) - constraints: fde->stack_realign == 1 - && cfa.offset == 0 - && cfa.indirect == 0 - && cfa.reg != HARD_FRAME_POINTER_REGNUM - effects: Use DW_CFA_def_cfa_expression to define cfa - cfa.reg == fde->drap_reg */ - -static void -dwarf2out_frame_debug_expr (rtx expr) -{ - rtx src, dest, span; - poly_int64 offset; - dw_fde_ref fde; - - /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of - the PARALLEL independently. The first element is always processed if - it is a SET. This is for backward compatibility. Other elements - are processed only if they are SETs and the RTX_FRAME_RELATED_P - flag is set in them. */ - if (GET_CODE (expr) == PARALLEL || GET_CODE (expr) == SEQUENCE) - { - int par_index; - int limit = XVECLEN (expr, 0); - rtx elem; - - /* PARALLELs have strict read-modify-write semantics, so we - ought to evaluate every rvalue before changing any lvalue. - It's cumbersome to do that in general, but there's an - easy approximation that is enough for all current users: - handle register saves before register assignments. */ - if (GET_CODE (expr) == PARALLEL) - for (par_index = 0; par_index < limit; par_index++) - { - elem = XVECEXP (expr, 0, par_index); - if (GET_CODE (elem) == SET - && MEM_P (SET_DEST (elem)) - && (RTX_FRAME_RELATED_P (elem) || par_index == 0)) - dwarf2out_frame_debug_expr (elem); - } - - for (par_index = 0; par_index < limit; par_index++) - { - elem = XVECEXP (expr, 0, par_index); - if (GET_CODE (elem) == SET - && (!MEM_P (SET_DEST (elem)) || GET_CODE (expr) == SEQUENCE) - && (RTX_FRAME_RELATED_P (elem) || par_index == 0)) - dwarf2out_frame_debug_expr (elem); - } - return; - } - - gcc_assert (GET_CODE (expr) == SET); - - src = SET_SRC (expr); - dest = SET_DEST (expr); - - if (REG_P (src)) - { - rtx rsi = reg_saved_in (src); - if (rsi) - src = rsi; - } - - fde = cfun->fde; - - switch (GET_CODE (dest)) - { - case REG: - switch (GET_CODE (src)) - { - /* Setting FP from SP. */ - case REG: - if (cur_cfa->reg == src) - { - /* Rule 1 */ - /* Update the CFA rule wrt SP or FP. Make sure src is - relative to the current CFA register. - - We used to require that dest be either SP or FP, but the - ARM copies SP to a temporary register, and from there to - FP. So we just rely on the backends to only set - RTX_FRAME_RELATED_P on appropriate insns. */ - cur_cfa->reg = dwf_cfa_reg (dest); - cur_trace->cfa_temp.reg = cur_cfa->reg; - cur_trace->cfa_temp.offset = cur_cfa->offset; - } - else - { - /* Saving a register in a register. */ - gcc_assert (!fixed_regs [REGNO (dest)] - /* For the SPARC and its register window. */ - || (dwf_regno (src) == DWARF_FRAME_RETURN_COLUMN)); - - /* After stack is aligned, we can only save SP in FP - if drap register is used. In this case, we have - to restore stack pointer with the CFA value and we - don't generate this DWARF information. */ - if (fde - && fde->stack_realign - && REGNO (src) == STACK_POINTER_REGNUM) - { - gcc_assert (REGNO (dest) == HARD_FRAME_POINTER_REGNUM - && fde->drap_reg != INVALID_REGNUM - && cur_cfa->reg != src - && fde->rule18); - fde->rule18 = 0; - /* The save of hard frame pointer has been deferred - until this point when Rule 18 applied. Emit it now. */ - queue_reg_save (dest, NULL_RTX, 0); - /* And as the instruction modifies the hard frame pointer, - flush the queue as well. */ - dwarf2out_flush_queued_reg_saves (); - } - else - queue_reg_save (src, dest, 0); - } - break; - - case PLUS: - case MINUS: - case LO_SUM: - if (dest == stack_pointer_rtx) - { - /* Rule 2 */ - /* Adjusting SP. */ - if (REG_P (XEXP (src, 1))) - { - gcc_assert (cur_trace->cfa_temp.reg == XEXP (src, 1)); - offset = cur_trace->cfa_temp.offset; - } - else if (!poly_int_rtx_p (XEXP (src, 1), &offset)) - gcc_unreachable (); - - if (XEXP (src, 0) == hard_frame_pointer_rtx) - { - /* Restoring SP from FP in the epilogue. */ - gcc_assert (cur_cfa->reg == dw_frame_pointer_regnum); - cur_cfa->reg = dw_stack_pointer_regnum; - } - else if (GET_CODE (src) == LO_SUM) - /* Assume we've set the source reg of the LO_SUM from sp. */ - ; - else - gcc_assert (XEXP (src, 0) == stack_pointer_rtx); - - if (GET_CODE (src) != MINUS) - offset = -offset; - if (cur_cfa->reg == dw_stack_pointer_regnum) - cur_cfa->offset += offset; - if (cur_trace->cfa_store.reg == dw_stack_pointer_regnum) - cur_trace->cfa_store.offset += offset; - } - else if (dest == hard_frame_pointer_rtx) - { - /* Rule 3 */ - /* Either setting the FP from an offset of the SP, - or adjusting the FP */ - gcc_assert (frame_pointer_needed); - - gcc_assert (REG_P (XEXP (src, 0)) - && cur_cfa->reg == XEXP (src, 0)); - offset = rtx_to_poly_int64 (XEXP (src, 1)); - if (GET_CODE (src) != MINUS) - offset = -offset; - cur_cfa->offset += offset; - cur_cfa->reg = dw_frame_pointer_regnum; - } - else - { - gcc_assert (GET_CODE (src) != MINUS); - - /* Rule 4 */ - if (REG_P (XEXP (src, 0)) - && cur_cfa->reg == XEXP (src, 0) - && poly_int_rtx_p (XEXP (src, 1), &offset)) - { - /* Setting a temporary CFA register that will be copied - into the FP later on. */ - offset = -offset; - cur_cfa->offset += offset; - cur_cfa->reg = dwf_cfa_reg (dest); - /* Or used to save regs to the stack. */ - cur_trace->cfa_temp.reg = cur_cfa->reg; - cur_trace->cfa_temp.offset = cur_cfa->offset; - } - - /* Rule 5 */ - else if (REG_P (XEXP (src, 0)) - && cur_trace->cfa_temp.reg == XEXP (src, 0) - && XEXP (src, 1) == stack_pointer_rtx) - { - /* Setting a scratch register that we will use instead - of SP for saving registers to the stack. */ - gcc_assert (cur_cfa->reg == dw_stack_pointer_regnum); - cur_trace->cfa_store.reg = dwf_cfa_reg (dest); - cur_trace->cfa_store.offset - = cur_cfa->offset - cur_trace->cfa_temp.offset; - } - - /* Rule 9 */ - else if (GET_CODE (src) == LO_SUM - && poly_int_rtx_p (XEXP (src, 1), - &cur_trace->cfa_temp.offset)) - cur_trace->cfa_temp.reg = dwf_cfa_reg (dest); - else - gcc_unreachable (); - } - break; - - /* Rule 6 */ - case CONST_INT: - case CONST_POLY_INT: - cur_trace->cfa_temp.reg = dwf_cfa_reg (dest); - cur_trace->cfa_temp.offset = rtx_to_poly_int64 (src); - break; - - /* Rule 7 */ - case IOR: - gcc_assert (REG_P (XEXP (src, 0)) - && cur_trace->cfa_temp.reg == XEXP (src, 0) - && CONST_INT_P (XEXP (src, 1))); - - cur_trace->cfa_temp.reg = dwf_cfa_reg (dest); - if (!can_ior_p (cur_trace->cfa_temp.offset, INTVAL (XEXP (src, 1)), - &cur_trace->cfa_temp.offset)) - /* The target shouldn't generate this kind of CFI note if we - can't represent it. */ - gcc_unreachable (); - break; - - /* Skip over HIGH, assuming it will be followed by a LO_SUM, - which will fill in all of the bits. */ - /* Rule 8 */ - case HIGH: - break; - - /* Rule 15 */ - case UNSPEC: - case UNSPEC_VOLATILE: - /* All unspecs should be represented by REG_CFA_* notes. */ - gcc_unreachable (); - return; - - /* Rule 16 */ - case AND: - /* If this AND operation happens on stack pointer in prologue, - we assume the stack is realigned and we extract the - alignment. */ - if (fde && XEXP (src, 0) == stack_pointer_rtx) - { - /* We interpret reg_save differently with stack_realign set. - Thus we must flush whatever we have queued first. */ - dwarf2out_flush_queued_reg_saves (); - - gcc_assert (cur_trace->cfa_store.reg - == XEXP (src, 0)); - fde->stack_realign = 1; - fde->stack_realignment = INTVAL (XEXP (src, 1)); - cur_trace->cfa_store.offset = 0; - - if (cur_cfa->reg != dw_stack_pointer_regnum - && cur_cfa->reg != dw_frame_pointer_regnum) - { - gcc_assert (cur_cfa->reg.span == 1); - fde->drap_reg = cur_cfa->reg.reg; - } - } - return; - - default: - gcc_unreachable (); - } - break; - - case MEM: - - /* Saving a register to the stack. Make sure dest is relative to the - CFA register. */ - switch (GET_CODE (XEXP (dest, 0))) - { - /* Rule 10 */ - /* With a push. */ - case PRE_MODIFY: - case POST_MODIFY: - /* We can't handle variable size modifications. */ - offset = -rtx_to_poly_int64 (XEXP (XEXP (XEXP (dest, 0), 1), 1)); - - gcc_assert (REGNO (XEXP (XEXP (dest, 0), 0)) == STACK_POINTER_REGNUM - && cur_trace->cfa_store.reg == dw_stack_pointer_regnum); - - cur_trace->cfa_store.offset += offset; - if (cur_cfa->reg == dw_stack_pointer_regnum) - cur_cfa->offset = cur_trace->cfa_store.offset; - - if (GET_CODE (XEXP (dest, 0)) == POST_MODIFY) - offset -= cur_trace->cfa_store.offset; - else - offset = -cur_trace->cfa_store.offset; - break; - - /* Rule 11 */ - case PRE_INC: - case PRE_DEC: - case POST_DEC: - offset = GET_MODE_SIZE (GET_MODE (dest)); - if (GET_CODE (XEXP (dest, 0)) == PRE_INC) - offset = -offset; - - gcc_assert ((REGNO (XEXP (XEXP (dest, 0), 0)) - == STACK_POINTER_REGNUM) - && cur_trace->cfa_store.reg == dw_stack_pointer_regnum); - - cur_trace->cfa_store.offset += offset; - - /* Rule 18: If stack is aligned, we will use FP as a - reference to represent the address of the stored - regiser. */ - if (fde - && fde->stack_realign - && REG_P (src) - && REGNO (src) == HARD_FRAME_POINTER_REGNUM) - { - gcc_assert (cur_cfa->reg != dw_frame_pointer_regnum); - cur_trace->cfa_store.offset = 0; - fde->rule18 = 1; - } - - if (cur_cfa->reg == dw_stack_pointer_regnum) - cur_cfa->offset = cur_trace->cfa_store.offset; - - if (GET_CODE (XEXP (dest, 0)) == POST_DEC) - offset += -cur_trace->cfa_store.offset; - else - offset = -cur_trace->cfa_store.offset; - break; - - /* Rule 12 */ - /* With an offset. */ - case PLUS: - case MINUS: - case LO_SUM: - { - struct cfa_reg regno; - - gcc_assert (REG_P (XEXP (XEXP (dest, 0), 0))); - offset = rtx_to_poly_int64 (XEXP (XEXP (dest, 0), 1)); - if (GET_CODE (XEXP (dest, 0)) == MINUS) - offset = -offset; - - regno = dwf_cfa_reg (XEXP (XEXP (dest, 0), 0)); - - if (cur_cfa->reg == regno) - offset -= cur_cfa->offset; - else if (cur_trace->cfa_store.reg == regno) - offset -= cur_trace->cfa_store.offset; - else - { - gcc_assert (cur_trace->cfa_temp.reg == regno); - offset -= cur_trace->cfa_temp.offset; - } - } - break; - - /* Rule 13 */ - /* Without an offset. */ - case REG: - { - struct cfa_reg regno = dwf_cfa_reg (XEXP (dest, 0)); - - if (cur_cfa->reg == regno) - offset = -cur_cfa->offset; - else if (cur_trace->cfa_store.reg == regno) - offset = -cur_trace->cfa_store.offset; - else - { - gcc_assert (cur_trace->cfa_temp.reg == regno); - offset = -cur_trace->cfa_temp.offset; - } - } - break; - - /* Rule 14 */ - case POST_INC: - gcc_assert (cur_trace->cfa_temp.reg == XEXP (XEXP (dest, 0), 0)); - offset = -cur_trace->cfa_temp.offset; - cur_trace->cfa_temp.offset -= GET_MODE_SIZE (GET_MODE (dest)); - break; - - default: - gcc_unreachable (); - } - - /* Rule 17 */ - /* If the source operand of this MEM operation is a memory, - we only care how much stack grew. */ - if (MEM_P (src)) - break; - - if (REG_P (src) - && REGNO (src) != STACK_POINTER_REGNUM - && REGNO (src) != HARD_FRAME_POINTER_REGNUM - && cur_cfa->reg == src) - { - /* We're storing the current CFA reg into the stack. */ - - if (known_eq (cur_cfa->offset, 0)) - { - /* Rule 19 */ - /* If stack is aligned, putting CFA reg into stack means - we can no longer use reg + offset to represent CFA. - Here we use DW_CFA_def_cfa_expression instead. The - result of this expression equals to the original CFA - value. */ - if (fde - && fde->stack_realign - && cur_cfa->indirect == 0 - && cur_cfa->reg != dw_frame_pointer_regnum) - { - gcc_assert (fde->drap_reg == cur_cfa->reg.reg); - - cur_cfa->indirect = 1; - cur_cfa->reg = dw_frame_pointer_regnum; - cur_cfa->base_offset = offset; - cur_cfa->offset = 0; - - fde->drap_reg_saved = 1; - break; - } - - /* If the source register is exactly the CFA, assume - we're saving SP like any other register; this happens - on the ARM. */ - queue_reg_save (stack_pointer_rtx, NULL_RTX, offset); - break; - } - else - { - /* Otherwise, we'll need to look in the stack to - calculate the CFA. */ - rtx x = XEXP (dest, 0); - - if (!REG_P (x)) - x = XEXP (x, 0); - gcc_assert (REG_P (x)); - - cur_cfa->reg = dwf_cfa_reg (x); - cur_cfa->base_offset = offset; - cur_cfa->indirect = 1; - break; - } - } - - if (REG_P (src)) - span = targetm.dwarf_register_span (src); - else - span = NULL; - - if (!span) - { - if (fde->rule18) - /* Just verify the hard frame pointer save when doing dynamic - realignment uses expected offset. The actual queue_reg_save - needs to be deferred until the instruction that sets - hard frame pointer to stack pointer, see PR99334 for - details. */ - gcc_assert (known_eq (offset, 0)); - else - queue_reg_save (src, NULL_RTX, offset); - } - else - { - /* We have a PARALLEL describing where the contents of SRC live. - Queue register saves for each piece of the PARALLEL. */ - poly_int64 span_offset = offset; - - gcc_assert (GET_CODE (span) == PARALLEL); - - const int par_len = XVECLEN (span, 0); - for (int par_index = 0; par_index < par_len; par_index++) - { - rtx elem = XVECEXP (span, 0, par_index); - queue_reg_save (elem, NULL_RTX, span_offset); - span_offset += GET_MODE_SIZE (GET_MODE (elem)); - } - } - break; - - default: - gcc_unreachable (); - } -} - -/* Record call frame debugging information for INSN, which either sets - SP or FP (adjusting how we calculate the frame address) or saves a - register to the stack. */ - -static void -dwarf2out_frame_debug (rtx_insn *insn) -{ - rtx note, n, pat; - bool handled_one = false; - - for (note = REG_NOTES (insn); note; note = XEXP (note, 1)) - switch (REG_NOTE_KIND (note)) - { - case REG_FRAME_RELATED_EXPR: - pat = XEXP (note, 0); - goto do_frame_expr; - - case REG_CFA_DEF_CFA: - dwarf2out_frame_debug_def_cfa (XEXP (note, 0)); - handled_one = true; - break; - - case REG_CFA_ADJUST_CFA: - n = XEXP (note, 0); - if (n == NULL) - { - n = PATTERN (insn); - if (GET_CODE (n) == PARALLEL) - n = XVECEXP (n, 0, 0); - } - dwarf2out_frame_debug_adjust_cfa (n); - handled_one = true; - break; - - case REG_CFA_OFFSET: - n = XEXP (note, 0); - if (n == NULL) - n = single_set (insn); - dwarf2out_frame_debug_cfa_offset (n); - handled_one = true; - break; - - case REG_CFA_REGISTER: - n = XEXP (note, 0); - if (n == NULL) - { - n = PATTERN (insn); - if (GET_CODE (n) == PARALLEL) - n = XVECEXP (n, 0, 0); - } - dwarf2out_frame_debug_cfa_register (n); - handled_one = true; - break; - - case REG_CFA_EXPRESSION: - case REG_CFA_VAL_EXPRESSION: - n = XEXP (note, 0); - if (n == NULL) - n = single_set (insn); - - if (REG_NOTE_KIND (note) == REG_CFA_EXPRESSION) - dwarf2out_frame_debug_cfa_expression (n); - else - dwarf2out_frame_debug_cfa_val_expression (n); - - handled_one = true; - break; - - case REG_CFA_RESTORE: - n = XEXP (note, 0); - if (n == NULL) - { - n = PATTERN (insn); - if (GET_CODE (n) == PARALLEL) - n = XVECEXP (n, 0, 0); - n = XEXP (n, 0); - } - dwarf2out_frame_debug_cfa_restore (n); - handled_one = true; - break; - - case REG_CFA_SET_VDRAP: - n = XEXP (note, 0); - if (REG_P (n)) - { - dw_fde_ref fde = cfun->fde; - if (fde) - { - gcc_assert (fde->vdrap_reg == INVALID_REGNUM); - if (REG_P (n)) - fde->vdrap_reg = dwf_regno (n); - } - } - handled_one = true; - break; - - case REG_CFA_TOGGLE_RA_MANGLE: - dwarf2out_frame_debug_cfa_toggle_ra_mangle (); - handled_one = true; - break; - - case REG_CFA_WINDOW_SAVE: - dwarf2out_frame_debug_cfa_window_save (); - handled_one = true; - break; - - case REG_CFA_FLUSH_QUEUE: - /* The actual flush happens elsewhere. */ - handled_one = true; - break; - - default: - break; - } - - if (!handled_one) - { - pat = PATTERN (insn); - do_frame_expr: - dwarf2out_frame_debug_expr (pat); - - /* Check again. A parallel can save and update the same register. - We could probably check just once, here, but this is safer than - removing the check at the start of the function. */ - if (clobbers_queued_reg_save (pat)) - dwarf2out_flush_queued_reg_saves (); - } -} - -/* Emit CFI info to change the state from OLD_ROW to NEW_ROW. */ - -static void -change_cfi_row (dw_cfi_row *old_row, dw_cfi_row *new_row) -{ - size_t i, n_old, n_new, n_max; - dw_cfi_ref cfi; - - if (new_row->cfa_cfi && !cfi_equal_p (old_row->cfa_cfi, new_row->cfa_cfi)) - add_cfi (new_row->cfa_cfi); - else - { - cfi = def_cfa_0 (&old_row->cfa, &new_row->cfa); - if (cfi) - add_cfi (cfi); - } - - n_old = vec_safe_length (old_row->reg_save); - n_new = vec_safe_length (new_row->reg_save); - n_max = MAX (n_old, n_new); - - for (i = 0; i < n_max; ++i) - { - dw_cfi_ref r_old = NULL, r_new = NULL; - - if (i < n_old) - r_old = (*old_row->reg_save)[i]; - if (i < n_new) - r_new = (*new_row->reg_save)[i]; - - if (r_old == r_new) - ; - else if (r_new == NULL) - add_cfi_restore (i); - else if (!cfi_equal_p (r_old, r_new)) - add_cfi (r_new); - } - - if (!old_row->window_save && new_row->window_save) - { - dw_cfi_ref cfi = new_cfi (); - - gcc_assert (!old_row->ra_mangled && !new_row->ra_mangled); - cfi->dw_cfi_opc = DW_CFA_GNU_window_save; - add_cfi (cfi); - } - - if (old_row->ra_mangled != new_row->ra_mangled) - { - dw_cfi_ref cfi = new_cfi (); - - gcc_assert (!old_row->window_save && !new_row->window_save); - /* DW_CFA_GNU_window_save is reused for toggling RA mangle state. */ - cfi->dw_cfi_opc = DW_CFA_GNU_window_save; - add_cfi (cfi); - } -} - -/* Examine CFI and return true if a cfi label and set_loc is needed - beforehand. Even when generating CFI assembler instructions, we - still have to add the cfi to the list so that lookup_cfa_1 works - later on. When -g2 and above we even need to force emitting of - CFI labels and add to list a DW_CFA_set_loc for convert_cfa_to_fb_loc_list - purposes. If we're generating DWARF3 output we use DW_OP_call_frame_cfa - and so don't use convert_cfa_to_fb_loc_list. */ - -static bool -cfi_label_required_p (dw_cfi_ref cfi) -{ - if (!dwarf2out_do_cfi_asm ()) - return true; - - if (dwarf_version == 2 - && debug_info_level > DINFO_LEVEL_TERSE - && dwarf_debuginfo_p ()) - { - switch (cfi->dw_cfi_opc) - { - case DW_CFA_def_cfa_offset: - case DW_CFA_def_cfa_offset_sf: - case DW_CFA_def_cfa_register: - case DW_CFA_def_cfa: - case DW_CFA_def_cfa_sf: - case DW_CFA_def_cfa_expression: - case DW_CFA_restore_state: - return true; - default: - return false; - } - } - return false; -} - -/* Walk the function, looking for NOTE_INSN_CFI notes. Add the CFIs to the - function's FDE, adding CFI labels and set_loc/advance_loc opcodes as - necessary. */ -static void -add_cfis_to_fde (void) -{ - dw_fde_ref fde = cfun->fde; - rtx_insn *insn, *next; - - for (insn = get_insns (); insn; insn = next) - { - next = NEXT_INSN (insn); - - if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_SWITCH_TEXT_SECTIONS) - fde->dw_fde_switch_cfi_index = vec_safe_length (fde->dw_fde_cfi); - - if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_CFI) - { - bool required = cfi_label_required_p (NOTE_CFI (insn)); - while (next) - if (NOTE_P (next) && NOTE_KIND (next) == NOTE_INSN_CFI) - { - required |= cfi_label_required_p (NOTE_CFI (next)); - next = NEXT_INSN (next); - } - else if (active_insn_p (next) - || (NOTE_P (next) && (NOTE_KIND (next) - == NOTE_INSN_SWITCH_TEXT_SECTIONS))) - break; - else - next = NEXT_INSN (next); - if (required) - { - int num = dwarf2out_cfi_label_num; - const char *label = dwarf2out_cfi_label (); - dw_cfi_ref xcfi; - - /* Set the location counter to the new label. */ - xcfi = new_cfi (); - xcfi->dw_cfi_opc = DW_CFA_advance_loc4; - xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; - vec_safe_push (fde->dw_fde_cfi, xcfi); - - rtx_note *tmp = emit_note_before (NOTE_INSN_CFI_LABEL, insn); - NOTE_LABEL_NUMBER (tmp) = num; - } - - do - { - if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_CFI) - vec_safe_push (fde->dw_fde_cfi, NOTE_CFI (insn)); - insn = NEXT_INSN (insn); - } - while (insn != next); - } - } -} - -static void dump_cfi_row (FILE *f, dw_cfi_row *row); - -/* If LABEL is the start of a trace, then initialize the state of that - trace from CUR_TRACE and CUR_ROW. */ - -static void -maybe_record_trace_start (rtx_insn *start, rtx_insn *origin) -{ - dw_trace_info *ti; - - ti = get_trace_info (start); - gcc_assert (ti != NULL); - - if (dump_file) - { - fprintf (dump_file, " saw edge from trace %u to %u (via %s %d)\n", - cur_trace->id, ti->id, - (origin ? rtx_name[(int) GET_CODE (origin)] : "fallthru"), - (origin ? INSN_UID (origin) : 0)); - } - - poly_int64 args_size = cur_trace->end_true_args_size; - if (ti->beg_row == NULL) - { - /* This is the first time we've encountered this trace. Propagate - state across the edge and push the trace onto the work list. */ - ti->beg_row = copy_cfi_row (cur_row); - ti->beg_true_args_size = args_size; - - ti->cfa_store = cur_trace->cfa_store; - ti->cfa_temp = cur_trace->cfa_temp; - ti->regs_saved_in_regs = cur_trace->regs_saved_in_regs.copy (); - - trace_work_list.safe_push (ti); - - if (dump_file) - fprintf (dump_file, "\tpush trace %u to worklist\n", ti->id); - } - else - { - - /* We ought to have the same state incoming to a given trace no - matter how we arrive at the trace. Anything else means we've - got some kind of optimization error. */ -#if CHECKING_P - if (!cfi_row_equal_p (cur_row, ti->beg_row)) - { - if (dump_file) - { - fprintf (dump_file, "Inconsistent CFI state!\n"); - fprintf (dump_file, "SHOULD have:\n"); - dump_cfi_row (dump_file, ti->beg_row); - fprintf (dump_file, "DO have:\n"); - dump_cfi_row (dump_file, cur_row); - } - - gcc_unreachable (); - } -#endif - - /* The args_size is allowed to conflict if it isn't actually used. */ - if (maybe_ne (ti->beg_true_args_size, args_size)) - ti->args_size_undefined = true; - } -} - -/* Similarly, but handle the args_size and CFA reset across EH - and non-local goto edges. */ - -static void -maybe_record_trace_start_abnormal (rtx_insn *start, rtx_insn *origin) -{ - poly_int64 save_args_size, delta; - dw_cfa_location save_cfa; - - save_args_size = cur_trace->end_true_args_size; - if (known_eq (save_args_size, 0)) - { - maybe_record_trace_start (start, origin); - return; - } - - delta = -save_args_size; - cur_trace->end_true_args_size = 0; - - save_cfa = cur_row->cfa; - if (cur_row->cfa.reg == dw_stack_pointer_regnum) - { - /* Convert a change in args_size (always a positive in the - direction of stack growth) to a change in stack pointer. */ - if (!STACK_GROWS_DOWNWARD) - delta = -delta; - - cur_row->cfa.offset += delta; - } - - maybe_record_trace_start (start, origin); - - cur_trace->end_true_args_size = save_args_size; - cur_row->cfa = save_cfa; -} - -/* Propagate CUR_TRACE state to the destinations implied by INSN. */ -/* ??? Sadly, this is in large part a duplicate of make_edges. */ - -static void -create_trace_edges (rtx_insn *insn) -{ - rtx tmp; - int i, n; - - if (JUMP_P (insn)) - { - rtx_jump_table_data *table; - - if (find_reg_note (insn, REG_NON_LOCAL_GOTO, NULL_RTX)) - return; - - if (tablejump_p (insn, NULL, &table)) - { - rtvec vec = table->get_labels (); - - n = GET_NUM_ELEM (vec); - for (i = 0; i < n; ++i) - { - rtx_insn *lab = as_a <rtx_insn *> (XEXP (RTVEC_ELT (vec, i), 0)); - maybe_record_trace_start (lab, insn); - } - - /* Handle casesi dispatch insns. */ - if ((tmp = tablejump_casesi_pattern (insn)) != NULL_RTX) - { - rtx_insn * lab = label_ref_label (XEXP (SET_SRC (tmp), 2)); - maybe_record_trace_start (lab, insn); - } - } - else if (computed_jump_p (insn)) - { - rtx_insn *temp; - unsigned int i; - FOR_EACH_VEC_SAFE_ELT (forced_labels, i, temp) - maybe_record_trace_start (temp, insn); - } - else if (returnjump_p (insn)) - ; - else if ((tmp = extract_asm_operands (PATTERN (insn))) != NULL) - { - n = ASM_OPERANDS_LABEL_LENGTH (tmp); - for (i = 0; i < n; ++i) - { - rtx_insn *lab = - as_a <rtx_insn *> (XEXP (ASM_OPERANDS_LABEL (tmp, i), 0)); - maybe_record_trace_start (lab, insn); - } - } - else - { - rtx_insn *lab = JUMP_LABEL_AS_INSN (insn); - gcc_assert (lab != NULL); - maybe_record_trace_start (lab, insn); - } - } - else if (CALL_P (insn)) - { - /* Sibling calls don't have edges inside this function. */ - if (SIBLING_CALL_P (insn)) - return; - - /* Process non-local goto edges. */ - if (can_nonlocal_goto (insn)) - for (rtx_insn_list *lab = nonlocal_goto_handler_labels; - lab; - lab = lab->next ()) - maybe_record_trace_start_abnormal (lab->insn (), insn); - } - else if (rtx_sequence *seq = dyn_cast <rtx_sequence *> (PATTERN (insn))) - { - int i, n = seq->len (); - for (i = 0; i < n; ++i) - create_trace_edges (seq->insn (i)); - return; - } - - /* Process EH edges. */ - if (CALL_P (insn) || cfun->can_throw_non_call_exceptions) - { - eh_landing_pad lp = get_eh_landing_pad_from_rtx (insn); - if (lp) - maybe_record_trace_start_abnormal (lp->landing_pad, insn); - } -} - -/* A subroutine of scan_trace. Do what needs to be done "after" INSN. */ - -static void -scan_insn_after (rtx_insn *insn) -{ - if (RTX_FRAME_RELATED_P (insn)) - dwarf2out_frame_debug (insn); - notice_args_size (insn); -} - -/* Scan the trace beginning at INSN and create the CFI notes for the - instructions therein. */ - -static void -scan_trace (dw_trace_info *trace, bool entry) -{ - rtx_insn *prev, *insn = trace->head; - dw_cfa_location this_cfa; - - if (dump_file) - fprintf (dump_file, "Processing trace %u : start at %s %d\n", - trace->id, rtx_name[(int) GET_CODE (insn)], - INSN_UID (insn)); - - trace->end_row = copy_cfi_row (trace->beg_row); - trace->end_true_args_size = trace->beg_true_args_size; - - cur_trace = trace; - cur_row = trace->end_row; - - this_cfa = cur_row->cfa; - cur_cfa = &this_cfa; - - /* If the current function starts with a non-standard incoming frame - sp offset, emit a note before the first instruction. */ - if (entry - && DEFAULT_INCOMING_FRAME_SP_OFFSET != INCOMING_FRAME_SP_OFFSET) - { - add_cfi_insn = insn; - gcc_assert (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_DELETED); - this_cfa.offset = INCOMING_FRAME_SP_OFFSET; - def_cfa_1 (&this_cfa); - } - - for (prev = insn, insn = NEXT_INSN (insn); - insn; - prev = insn, insn = NEXT_INSN (insn)) - { - rtx_insn *control; - - /* Do everything that happens "before" the insn. */ - add_cfi_insn = prev; - - /* Notice the end of a trace. */ - if (BARRIER_P (insn)) - { - /* Don't bother saving the unneeded queued registers at all. */ - queued_reg_saves.truncate (0); - break; - } - if (save_point_p (insn)) - { - /* Propagate across fallthru edges. */ - dwarf2out_flush_queued_reg_saves (); - maybe_record_trace_start (insn, NULL); - break; - } - - if (DEBUG_INSN_P (insn) || !inside_basic_block_p (insn)) - continue; - - /* Handle all changes to the row state. Sequences require special - handling for the positioning of the notes. */ - if (rtx_sequence *pat = dyn_cast <rtx_sequence *> (PATTERN (insn))) - { - rtx_insn *elt; - int i, n = pat->len (); - - control = pat->insn (0); - if (can_throw_internal (control)) - notice_eh_throw (control); - dwarf2out_flush_queued_reg_saves (); - - if (JUMP_P (control) && INSN_ANNULLED_BRANCH_P (control)) - { - /* ??? Hopefully multiple delay slots are not annulled. */ - gcc_assert (n == 2); - gcc_assert (!RTX_FRAME_RELATED_P (control)); - gcc_assert (!find_reg_note (control, REG_ARGS_SIZE, NULL)); - - elt = pat->insn (1); - - if (INSN_FROM_TARGET_P (elt)) - { - cfi_vec save_row_reg_save; - - /* If ELT is an instruction from target of an annulled - branch, the effects are for the target only and so - the args_size and CFA along the current path - shouldn't change. */ - add_cfi_insn = NULL; - poly_int64 restore_args_size = cur_trace->end_true_args_size; - cur_cfa = &cur_row->cfa; - save_row_reg_save = vec_safe_copy (cur_row->reg_save); - - scan_insn_after (elt); - - /* ??? Should we instead save the entire row state? */ - gcc_assert (!queued_reg_saves.length ()); - - create_trace_edges (control); - - cur_trace->end_true_args_size = restore_args_size; - cur_row->cfa = this_cfa; - cur_row->reg_save = save_row_reg_save; - cur_cfa = &this_cfa; - } - else - { - /* If ELT is a annulled branch-taken instruction (i.e. - executed only when branch is not taken), the args_size - and CFA should not change through the jump. */ - create_trace_edges (control); - - /* Update and continue with the trace. */ - add_cfi_insn = insn; - scan_insn_after (elt); - def_cfa_1 (&this_cfa); - } - continue; - } - - /* The insns in the delay slot should all be considered to happen - "before" a call insn. Consider a call with a stack pointer - adjustment in the delay slot. The backtrace from the callee - should include the sp adjustment. Unfortunately, that leaves - us with an unavoidable unwinding error exactly at the call insn - itself. For jump insns we'd prefer to avoid this error by - placing the notes after the sequence. */ - if (JUMP_P (control)) - add_cfi_insn = insn; - - for (i = 1; i < n; ++i) - { - elt = pat->insn (i); - scan_insn_after (elt); - } - - /* Make sure any register saves are visible at the jump target. */ - dwarf2out_flush_queued_reg_saves (); - any_cfis_emitted = false; - - /* However, if there is some adjustment on the call itself, e.g. - a call_pop, that action should be considered to happen after - the call returns. */ - add_cfi_insn = insn; - scan_insn_after (control); - } - else - { - /* Flush data before calls and jumps, and of course if necessary. */ - if (can_throw_internal (insn)) - { - notice_eh_throw (insn); - dwarf2out_flush_queued_reg_saves (); - } - else if (!NONJUMP_INSN_P (insn) - || clobbers_queued_reg_save (insn) - || find_reg_note (insn, REG_CFA_FLUSH_QUEUE, NULL)) - dwarf2out_flush_queued_reg_saves (); - any_cfis_emitted = false; - - add_cfi_insn = insn; - scan_insn_after (insn); - control = insn; - } - - /* Between frame-related-p and args_size we might have otherwise - emitted two cfa adjustments. Do it now. */ - def_cfa_1 (&this_cfa); - - /* Minimize the number of advances by emitting the entire queue - once anything is emitted. */ - if (any_cfis_emitted - || find_reg_note (insn, REG_CFA_FLUSH_QUEUE, NULL)) - dwarf2out_flush_queued_reg_saves (); - - /* Note that a test for control_flow_insn_p does exactly the - same tests as are done to actually create the edges. So - always call the routine and let it not create edges for - non-control-flow insns. */ - create_trace_edges (control); - } - - gcc_assert (!cfun->fde || !cfun->fde->rule18); - add_cfi_insn = NULL; - cur_row = NULL; - cur_trace = NULL; - cur_cfa = NULL; -} - -/* Scan the function and create the initial set of CFI notes. */ - -static void -create_cfi_notes (void) -{ - dw_trace_info *ti; - - gcc_checking_assert (!queued_reg_saves.exists ()); - gcc_checking_assert (!trace_work_list.exists ()); - - /* Always begin at the entry trace. */ - ti = &trace_info[0]; - scan_trace (ti, true); - - while (!trace_work_list.is_empty ()) - { - ti = trace_work_list.pop (); - scan_trace (ti, false); - } - - queued_reg_saves.release (); - trace_work_list.release (); -} - -/* Return the insn before the first NOTE_INSN_CFI after START. */ - -static rtx_insn * -before_next_cfi_note (rtx_insn *start) -{ - rtx_insn *prev = start; - while (start) - { - if (NOTE_P (start) && NOTE_KIND (start) == NOTE_INSN_CFI) - return prev; - prev = start; - start = NEXT_INSN (start); - } - gcc_unreachable (); -} - -/* Insert CFI notes between traces to properly change state between them. */ - -static void -connect_traces (void) -{ - unsigned i, n; - dw_trace_info *prev_ti, *ti; - - /* ??? Ideally, we should have both queued and processed every trace. - However the current representation of constant pools on various targets - is indistinguishable from unreachable code. Assume for the moment that - we can simply skip over such traces. */ - /* ??? Consider creating a DATA_INSN rtx code to indicate that - these are not "real" instructions, and should not be considered. - This could be generically useful for tablejump data as well. */ - /* Remove all unprocessed traces from the list. */ - unsigned ix, ix2; - VEC_ORDERED_REMOVE_IF_FROM_TO (trace_info, ix, ix2, ti, 1, - trace_info.length (), ti->beg_row == NULL); - FOR_EACH_VEC_ELT (trace_info, ix, ti) - gcc_assert (ti->end_row != NULL); - - /* Work from the end back to the beginning. This lets us easily insert - remember/restore_state notes in the correct order wrt other notes. */ - n = trace_info.length (); - prev_ti = &trace_info[n - 1]; - for (i = n - 1; i > 0; --i) - { - dw_cfi_row *old_row; - - ti = prev_ti; - prev_ti = &trace_info[i - 1]; - - add_cfi_insn = ti->head; - - /* In dwarf2out_switch_text_section, we'll begin a new FDE - for the portion of the function in the alternate text - section. The row state at the very beginning of that - new FDE will be exactly the row state from the CIE. */ - if (ti->switch_sections) - old_row = cie_cfi_row; - else - { - old_row = prev_ti->end_row; - /* If there's no change from the previous end state, fine. */ - if (cfi_row_equal_p (old_row, ti->beg_row)) - ; - /* Otherwise check for the common case of sharing state with - the beginning of an epilogue, but not the end. Insert - remember/restore opcodes in that case. */ - else if (cfi_row_equal_p (prev_ti->beg_row, ti->beg_row)) - { - dw_cfi_ref cfi; - - /* Note that if we blindly insert the remember at the - start of the trace, we can wind up increasing the - size of the unwind info due to extra advance opcodes. - Instead, put the remember immediately before the next - state change. We know there must be one, because the - state at the beginning and head of the trace differ. */ - add_cfi_insn = before_next_cfi_note (prev_ti->head); - cfi = new_cfi (); - cfi->dw_cfi_opc = DW_CFA_remember_state; - add_cfi (cfi); - - add_cfi_insn = ti->head; - cfi = new_cfi (); - cfi->dw_cfi_opc = DW_CFA_restore_state; - add_cfi (cfi); - - /* If the target unwinder does not save the CFA as part of the - register state, we need to restore it separately. */ - if (targetm.asm_out.should_restore_cfa_state () - && (cfi = def_cfa_0 (&old_row->cfa, &ti->beg_row->cfa))) - add_cfi (cfi); - - old_row = prev_ti->beg_row; - } - /* Otherwise, we'll simply change state from the previous end. */ - } - - change_cfi_row (old_row, ti->beg_row); - - if (dump_file && add_cfi_insn != ti->head) - { - rtx_insn *note; - - fprintf (dump_file, "Fixup between trace %u and %u:\n", - prev_ti->id, ti->id); - - note = ti->head; - do - { - note = NEXT_INSN (note); - gcc_assert (NOTE_P (note) && NOTE_KIND (note) == NOTE_INSN_CFI); - output_cfi_directive (dump_file, NOTE_CFI (note)); - } - while (note != add_cfi_insn); - } - } - - /* Connect args_size between traces that have can_throw_internal insns. */ - if (cfun->eh->lp_array) - { - poly_int64 prev_args_size = 0; - - for (i = 0; i < n; ++i) - { - ti = &trace_info[i]; - - if (ti->switch_sections) - prev_args_size = 0; - - if (ti->eh_head == NULL) - continue; - - /* We require either the incoming args_size values to match or the - presence of an insn setting it before the first EH insn. */ - gcc_assert (!ti->args_size_undefined || ti->args_size_defined_for_eh); - - /* In the latter case, we force the creation of a CFI note. */ - if (ti->args_size_undefined - || maybe_ne (ti->beg_delay_args_size, prev_args_size)) - { - /* ??? Search back to previous CFI note. */ - add_cfi_insn = PREV_INSN (ti->eh_head); - add_cfi_args_size (ti->beg_delay_args_size); - } - - prev_args_size = ti->end_delay_args_size; - } - } -} - -/* Set up the pseudo-cfg of instruction traces, as described at the - block comment at the top of the file. */ - -static void -create_pseudo_cfg (void) -{ - bool saw_barrier, switch_sections; - dw_trace_info ti; - rtx_insn *insn; - unsigned i; - - /* The first trace begins at the start of the function, - and begins with the CIE row state. */ - trace_info.create (16); - memset (&ti, 0, sizeof (ti)); - ti.head = get_insns (); - ti.beg_row = cie_cfi_row; - ti.cfa_store = cie_cfi_row->cfa; - ti.cfa_temp.reg.set_by_dwreg (INVALID_REGNUM); - trace_info.quick_push (ti); - - if (cie_return_save) - ti.regs_saved_in_regs.safe_push (*cie_return_save); - - /* Walk all the insns, collecting start of trace locations. */ - saw_barrier = false; - switch_sections = false; - for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) - { - if (BARRIER_P (insn)) - saw_barrier = true; - else if (NOTE_P (insn) - && NOTE_KIND (insn) == NOTE_INSN_SWITCH_TEXT_SECTIONS) - { - /* We should have just seen a barrier. */ - gcc_assert (saw_barrier); - switch_sections = true; - } - /* Watch out for save_point notes between basic blocks. - In particular, a note after a barrier. Do not record these, - delaying trace creation until the label. */ - else if (save_point_p (insn) - && (LABEL_P (insn) || !saw_barrier)) - { - memset (&ti, 0, sizeof (ti)); - ti.head = insn; - ti.switch_sections = switch_sections; - ti.id = trace_info.length (); - trace_info.safe_push (ti); - - saw_barrier = false; - switch_sections = false; - } - } - - /* Create the trace index after we've finished building trace_info, - avoiding stale pointer problems due to reallocation. */ - trace_index - = new hash_table<trace_info_hasher> (trace_info.length ()); - dw_trace_info *tp; - FOR_EACH_VEC_ELT (trace_info, i, tp) - { - dw_trace_info **slot; - - if (dump_file) - fprintf (dump_file, "Creating trace %u : start at %s %d%s\n", tp->id, - rtx_name[(int) GET_CODE (tp->head)], INSN_UID (tp->head), - tp->switch_sections ? " (section switch)" : ""); - - slot = trace_index->find_slot_with_hash (tp, INSN_UID (tp->head), INSERT); - gcc_assert (*slot == NULL); - *slot = tp; - } -} - -/* Record the initial position of the return address. RTL is - INCOMING_RETURN_ADDR_RTX. */ - -static void -initial_return_save (rtx rtl) -{ - struct cfa_reg reg; - reg.set_by_dwreg (INVALID_REGNUM); - poly_int64 offset = 0; - - switch (GET_CODE (rtl)) - { - case REG: - /* RA is in a register. */ - reg = dwf_cfa_reg (rtl); - break; - - case MEM: - /* RA is on the stack. */ - rtl = XEXP (rtl, 0); - switch (GET_CODE (rtl)) - { - case REG: - gcc_assert (REGNO (rtl) == STACK_POINTER_REGNUM); - offset = 0; - break; - - case PLUS: - gcc_assert (REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM); - offset = rtx_to_poly_int64 (XEXP (rtl, 1)); - break; - - case MINUS: - gcc_assert (REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM); - offset = -rtx_to_poly_int64 (XEXP (rtl, 1)); - break; - - default: - gcc_unreachable (); - } - - break; - - case PLUS: - /* The return address is at some offset from any value we can - actually load. For instance, on the SPARC it is in %i7+8. Just - ignore the offset for now; it doesn't matter for unwinding frames. */ - gcc_assert (CONST_INT_P (XEXP (rtl, 1))); - initial_return_save (XEXP (rtl, 0)); - return; - - default: - gcc_unreachable (); - } - - if (reg.reg != DWARF_FRAME_RETURN_COLUMN) - { - if (reg.reg != INVALID_REGNUM) - record_reg_saved_in_reg (rtl, pc_rtx); - reg_save (DWARF_FRAME_RETURN_COLUMN, reg, offset - cur_row->cfa.offset); - } -} - -static void -create_cie_data (void) -{ - dw_cfa_location loc; - dw_trace_info cie_trace; - - dw_stack_pointer_regnum = dwf_cfa_reg (stack_pointer_rtx); - - memset (&cie_trace, 0, sizeof (cie_trace)); - cur_trace = &cie_trace; - - add_cfi_vec = &cie_cfi_vec; - cie_cfi_row = cur_row = new_cfi_row (); - - /* On entry, the Canonical Frame Address is at SP. */ - memset (&loc, 0, sizeof (loc)); - loc.reg = dw_stack_pointer_regnum; - /* create_cie_data is called just once per TU, and when using .cfi_startproc - is even done by the assembler rather than the compiler. If the target - has different incoming frame sp offsets depending on what kind of - function it is, use a single constant offset for the target and - if needed, adjust before the first instruction in insn stream. */ - loc.offset = DEFAULT_INCOMING_FRAME_SP_OFFSET; - def_cfa_1 (&loc); - - if (targetm.debug_unwind_info () == UI_DWARF2 - || targetm_common.except_unwind_info (&global_options) == UI_DWARF2) - { - initial_return_save (INCOMING_RETURN_ADDR_RTX); - - /* For a few targets, we have the return address incoming into a - register, but choose a different return column. This will result - in a DW_CFA_register for the return, and an entry in - regs_saved_in_regs to match. If the target later stores that - return address register to the stack, we want to be able to emit - the DW_CFA_offset against the return column, not the intermediate - save register. Save the contents of regs_saved_in_regs so that - we can re-initialize it at the start of each function. */ - switch (cie_trace.regs_saved_in_regs.length ()) - { - case 0: - break; - case 1: - cie_return_save = ggc_alloc<reg_saved_in_data> (); - *cie_return_save = cie_trace.regs_saved_in_regs[0]; - cie_trace.regs_saved_in_regs.release (); - break; - default: - gcc_unreachable (); - } - } - - add_cfi_vec = NULL; - cur_row = NULL; - cur_trace = NULL; -} - -/* Annotate the function with NOTE_INSN_CFI notes to record the CFI - state at each location within the function. These notes will be - emitted during pass_final. */ - -static unsigned int -execute_dwarf2_frame (void) -{ - /* Different HARD_FRAME_POINTER_REGNUM might coexist in the same file. */ - dw_frame_pointer_regnum = dwf_cfa_reg (hard_frame_pointer_rtx); - - /* The first time we're called, compute the incoming frame state. */ - if (cie_cfi_vec == NULL) - create_cie_data (); - - dwarf2out_alloc_current_fde (); - - create_pseudo_cfg (); - - /* Do the work. */ - create_cfi_notes (); - connect_traces (); - add_cfis_to_fde (); - - /* Free all the data we allocated. */ - { - size_t i; - dw_trace_info *ti; - - FOR_EACH_VEC_ELT (trace_info, i, ti) - ti->regs_saved_in_regs.release (); - } - trace_info.release (); - - delete trace_index; - trace_index = NULL; - - return 0; -} - -/* Convert a DWARF call frame info. operation to its string name */ - -static const char * -dwarf_cfi_name (unsigned int cfi_opc) -{ - const char *name = get_DW_CFA_name (cfi_opc); - - if (name != NULL) - return name; - - return "DW_CFA_<unknown>"; -} - -/* This routine will generate the correct assembly data for a location - description based on a cfi entry with a complex address. */ - -static void -output_cfa_loc (dw_cfi_ref cfi, int for_eh) -{ - dw_loc_descr_ref loc; - unsigned long size; - - if (cfi->dw_cfi_opc == DW_CFA_expression - || cfi->dw_cfi_opc == DW_CFA_val_expression) - { - unsigned r = - DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data (1, r, NULL); - loc = cfi->dw_cfi_oprnd2.dw_cfi_loc; - } - else - loc = cfi->dw_cfi_oprnd1.dw_cfi_loc; - - /* Output the size of the block. */ - size = size_of_locs (loc); - dw2_asm_output_data_uleb128 (size, NULL); - - /* Now output the operations themselves. */ - output_loc_sequence (loc, for_eh); -} - -/* Similar, but used for .cfi_escape. */ - -static void -output_cfa_loc_raw (dw_cfi_ref cfi) -{ - dw_loc_descr_ref loc; - unsigned long size; - - if (cfi->dw_cfi_opc == DW_CFA_expression - || cfi->dw_cfi_opc == DW_CFA_val_expression) - { - unsigned r = - DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (asm_out_file, "%#x,", r); - loc = cfi->dw_cfi_oprnd2.dw_cfi_loc; - } - else - loc = cfi->dw_cfi_oprnd1.dw_cfi_loc; - - /* Output the size of the block. */ - size = size_of_locs (loc); - dw2_asm_output_data_uleb128_raw (size); - fputc (',', asm_out_file); - - /* Now output the operations themselves. */ - output_loc_sequence_raw (loc); -} - -/* Output a Call Frame Information opcode and its operand(s). */ - -void -output_cfi (dw_cfi_ref cfi, dw_fde_ref fde, int for_eh) -{ - unsigned long r; - HOST_WIDE_INT off; - - if (cfi->dw_cfi_opc == DW_CFA_advance_loc) - dw2_asm_output_data (1, (cfi->dw_cfi_opc - | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)), - "DW_CFA_advance_loc " HOST_WIDE_INT_PRINT_HEX, - ((unsigned HOST_WIDE_INT) - cfi->dw_cfi_oprnd1.dw_cfi_offset)); - else if (cfi->dw_cfi_opc == DW_CFA_offset) - { - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data (1, (cfi->dw_cfi_opc | (r & 0x3f)), - "DW_CFA_offset, column %#lx", r); - off = div_data_align (cfi->dw_cfi_oprnd2.dw_cfi_offset); - dw2_asm_output_data_uleb128 (off, NULL); - } - else if (cfi->dw_cfi_opc == DW_CFA_restore) - { - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data (1, (cfi->dw_cfi_opc | (r & 0x3f)), - "DW_CFA_restore, column %#lx", r); - } - else - { - dw2_asm_output_data (1, cfi->dw_cfi_opc, - "%s", dwarf_cfi_name (cfi->dw_cfi_opc)); - - switch (cfi->dw_cfi_opc) - { - case DW_CFA_set_loc: - if (for_eh) - dw2_asm_output_encoded_addr_rtx ( - ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0), - gen_rtx_SYMBOL_REF (Pmode, cfi->dw_cfi_oprnd1.dw_cfi_addr), - false, NULL); - else - dw2_asm_output_addr (DWARF2_ADDR_SIZE, - cfi->dw_cfi_oprnd1.dw_cfi_addr, NULL); - fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; - break; - - case DW_CFA_advance_loc1: - dw2_asm_output_delta (1, cfi->dw_cfi_oprnd1.dw_cfi_addr, - fde->dw_fde_current_label, NULL); - fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; - break; - - case DW_CFA_advance_loc2: - dw2_asm_output_delta (2, cfi->dw_cfi_oprnd1.dw_cfi_addr, - fde->dw_fde_current_label, NULL); - fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; - break; - - case DW_CFA_advance_loc4: - dw2_asm_output_delta (4, cfi->dw_cfi_oprnd1.dw_cfi_addr, - fde->dw_fde_current_label, NULL); - fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; - break; - - case DW_CFA_MIPS_advance_loc8: - dw2_asm_output_delta (8, cfi->dw_cfi_oprnd1.dw_cfi_addr, - fde->dw_fde_current_label, NULL); - fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; - break; - - case DW_CFA_offset_extended: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - off = div_data_align (cfi->dw_cfi_oprnd2.dw_cfi_offset); - dw2_asm_output_data_uleb128 (off, NULL); - break; - - case DW_CFA_def_cfa: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL); - break; - - case DW_CFA_offset_extended_sf: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - off = div_data_align (cfi->dw_cfi_oprnd2.dw_cfi_offset); - dw2_asm_output_data_sleb128 (off, NULL); - break; - - case DW_CFA_def_cfa_sf: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - off = div_data_align (cfi->dw_cfi_oprnd2.dw_cfi_offset); - dw2_asm_output_data_sleb128 (off, NULL); - break; - - case DW_CFA_restore_extended: - case DW_CFA_undefined: - case DW_CFA_same_value: - case DW_CFA_def_cfa_register: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - break; - - case DW_CFA_register: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd2.dw_cfi_reg_num, for_eh); - dw2_asm_output_data_uleb128 (r, NULL); - break; - - case DW_CFA_def_cfa_offset: - case DW_CFA_GNU_args_size: - dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset, NULL); - break; - - case DW_CFA_def_cfa_offset_sf: - off = div_data_align (cfi->dw_cfi_oprnd1.dw_cfi_offset); - dw2_asm_output_data_sleb128 (off, NULL); - break; - - case DW_CFA_GNU_window_save: - break; - - case DW_CFA_def_cfa_expression: - case DW_CFA_expression: - case DW_CFA_val_expression: - output_cfa_loc (cfi, for_eh); - break; - - case DW_CFA_GNU_negative_offset_extended: - /* Obsoleted by DW_CFA_offset_extended_sf. */ - gcc_unreachable (); - - default: - break; - } - } -} - -/* Similar, but do it via assembler directives instead. */ - -void -output_cfi_directive (FILE *f, dw_cfi_ref cfi) -{ - unsigned long r, r2; - - switch (cfi->dw_cfi_opc) - { - case DW_CFA_advance_loc: - case DW_CFA_advance_loc1: - case DW_CFA_advance_loc2: - case DW_CFA_advance_loc4: - case DW_CFA_MIPS_advance_loc8: - case DW_CFA_set_loc: - /* Should only be created in a code path not followed when emitting - via directives. The assembler is going to take care of this for - us. But this routines is also used for debugging dumps, so - print something. */ - gcc_assert (f != asm_out_file); - fprintf (f, "\t.cfi_advance_loc\n"); - break; - - case DW_CFA_offset: - case DW_CFA_offset_extended: - case DW_CFA_offset_extended_sf: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_offset %lu, " HOST_WIDE_INT_PRINT_DEC"\n", - r, cfi->dw_cfi_oprnd2.dw_cfi_offset); - break; - - case DW_CFA_restore: - case DW_CFA_restore_extended: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_restore %lu\n", r); - break; - - case DW_CFA_undefined: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_undefined %lu\n", r); - break; - - case DW_CFA_same_value: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_same_value %lu\n", r); - break; - - case DW_CFA_def_cfa: - case DW_CFA_def_cfa_sf: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_def_cfa %lu, " HOST_WIDE_INT_PRINT_DEC"\n", - r, cfi->dw_cfi_oprnd2.dw_cfi_offset); - break; - - case DW_CFA_def_cfa_register: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_def_cfa_register %lu\n", r); - break; - - case DW_CFA_register: - r = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, 1); - r2 = DWARF2_FRAME_REG_OUT (cfi->dw_cfi_oprnd2.dw_cfi_reg_num, 1); - fprintf (f, "\t.cfi_register %lu, %lu\n", r, r2); - break; - - case DW_CFA_def_cfa_offset: - case DW_CFA_def_cfa_offset_sf: - fprintf (f, "\t.cfi_def_cfa_offset " - HOST_WIDE_INT_PRINT_DEC"\n", - cfi->dw_cfi_oprnd1.dw_cfi_offset); - break; - - case DW_CFA_remember_state: - fprintf (f, "\t.cfi_remember_state\n"); - break; - case DW_CFA_restore_state: - fprintf (f, "\t.cfi_restore_state\n"); - break; - - case DW_CFA_GNU_args_size: - if (f == asm_out_file) - { - fprintf (f, "\t.cfi_escape %#x,", DW_CFA_GNU_args_size); - dw2_asm_output_data_uleb128_raw (cfi->dw_cfi_oprnd1.dw_cfi_offset); - if (flag_debug_asm) - fprintf (f, "\t%s args_size " HOST_WIDE_INT_PRINT_DEC, - ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); - fputc ('\n', f); - } - else - { - fprintf (f, "\t.cfi_GNU_args_size " HOST_WIDE_INT_PRINT_DEC "\n", - cfi->dw_cfi_oprnd1.dw_cfi_offset); - } - break; - - case DW_CFA_GNU_window_save: - fprintf (f, "\t.cfi_window_save\n"); - break; - - case DW_CFA_def_cfa_expression: - case DW_CFA_expression: - case DW_CFA_val_expression: - if (f != asm_out_file) - { - fprintf (f, "\t.cfi_%scfa_%sexpression ...\n", - cfi->dw_cfi_opc == DW_CFA_def_cfa_expression ? "def_" : "", - cfi->dw_cfi_opc == DW_CFA_val_expression ? "val_" : ""); - break; - } - fprintf (f, "\t.cfi_escape %#x,", cfi->dw_cfi_opc); - output_cfa_loc_raw (cfi); - fputc ('\n', f); - break; - - default: - gcc_unreachable (); - } -} - -void -dwarf2out_emit_cfi (dw_cfi_ref cfi) -{ - if (dwarf2out_do_cfi_asm ()) - output_cfi_directive (asm_out_file, cfi); -} - -static void -dump_cfi_row (FILE *f, dw_cfi_row *row) -{ - dw_cfi_ref cfi; - unsigned i; - - cfi = row->cfa_cfi; - if (!cfi) - { - dw_cfa_location dummy; - memset (&dummy, 0, sizeof (dummy)); - dummy.reg.set_by_dwreg (INVALID_REGNUM); - cfi = def_cfa_0 (&dummy, &row->cfa); - } - output_cfi_directive (f, cfi); - - FOR_EACH_VEC_SAFE_ELT (row->reg_save, i, cfi) - if (cfi) - output_cfi_directive (f, cfi); -} - -void debug_cfi_row (dw_cfi_row *row); - -void -debug_cfi_row (dw_cfi_row *row) -{ - dump_cfi_row (stderr, row); -} - - -/* Save the result of dwarf2out_do_frame across PCH. - This variable is tri-state, with 0 unset, >0 true, <0 false. */ -static GTY(()) signed char saved_do_cfi_asm = 0; - -/* Decide whether to emit EH frame unwind information for the current - translation unit. */ - -bool -dwarf2out_do_eh_frame (void) -{ - return - (flag_unwind_tables || flag_exceptions) - && targetm_common.except_unwind_info (&global_options) == UI_DWARF2; -} - -/* Decide whether we want to emit frame unwind information for the current - translation unit. */ - -bool -dwarf2out_do_frame (void) -{ - /* We want to emit correct CFA location expressions or lists, so we - have to return true if we're going to generate debug info, even if - we're not going to output frame or unwind info. */ - if (dwarf_debuginfo_p () || dwarf_based_debuginfo_p ()) - return true; - - if (saved_do_cfi_asm > 0) - return true; - - if (targetm.debug_unwind_info () == UI_DWARF2) - return true; - - if (dwarf2out_do_eh_frame ()) - return true; - - return false; -} - -/* Decide whether to emit frame unwind via assembler directives. */ - -bool -dwarf2out_do_cfi_asm (void) -{ - int enc; - - if (saved_do_cfi_asm != 0) - return saved_do_cfi_asm > 0; - - /* Assume failure for a moment. */ - saved_do_cfi_asm = -1; - - if (!flag_dwarf2_cfi_asm || !dwarf2out_do_frame ()) - return false; - if (!HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) - return false; - - /* Make sure the personality encoding is one the assembler can support. - In particular, aligned addresses can't be handled. */ - enc = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/2,/*global=*/1); - if ((enc & 0x70) != 0 && (enc & 0x70) != DW_EH_PE_pcrel) - return false; - enc = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0,/*global=*/0); - if ((enc & 0x70) != 0 && (enc & 0x70) != DW_EH_PE_pcrel) - return false; - - /* If we can't get the assembler to emit only .debug_frame, and we don't need - dwarf2 unwind info for exceptions, then emit .debug_frame by hand. */ - if (!HAVE_GAS_CFI_SECTIONS_DIRECTIVE && !dwarf2out_do_eh_frame ()) - return false; - - /* Success! */ - saved_do_cfi_asm = 1; - return true; -} - -namespace { - -const pass_data pass_data_dwarf2_frame = -{ - RTL_PASS, /* type */ - "dwarf2", /* name */ - OPTGROUP_NONE, /* optinfo_flags */ - TV_FINAL, /* tv_id */ - 0, /* properties_required */ - 0, /* properties_provided */ - 0, /* properties_destroyed */ - 0, /* todo_flags_start */ - 0, /* todo_flags_finish */ -}; - -class pass_dwarf2_frame : public rtl_opt_pass -{ -public: - pass_dwarf2_frame (gcc::context *ctxt) - : rtl_opt_pass (pass_data_dwarf2_frame, ctxt) - {} - - /* opt_pass methods: */ - virtual bool gate (function *); - virtual unsigned int execute (function *) { return execute_dwarf2_frame (); } - -}; // class pass_dwarf2_frame - -bool -pass_dwarf2_frame::gate (function *) -{ - /* Targets which still implement the prologue in assembler text - cannot use the generic dwarf2 unwinding. */ - if (!targetm.have_prologue ()) - return false; - - /* ??? What to do for UI_TARGET unwinding? They might be able to benefit - from the optimized shrink-wrapping annotations that we will compute. - For now, only produce the CFI notes for dwarf2. */ - return dwarf2out_do_frame (); -} - -} // anon namespace - -rtl_opt_pass * -make_pass_dwarf2_frame (gcc::context *ctxt) -{ - return new pass_dwarf2_frame (ctxt); -} - -#include "gt-dwarf2cfi.h" |