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authorMartin Liska <mliska@suse.cz>2022-01-14 16:56:44 +0100
committerMartin Liska <mliska@suse.cz>2022-01-17 22:12:04 +0100
commit5c69acb32329d49e58c26fa41ae74229a52b9106 (patch)
treeddb05f9d73afb6f998457d2ac4b720e3b3b60483 /gcc/tree-ssa-dse.c
parent490e23032baaece71f2ec09fa1805064b150fbc2 (diff)
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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: 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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... * match.cc: ...here. * matchexp.c: Moved to... * matchexp.cc: ...here. * misc.c: Moved to... * misc.cc: ...here. * module.c: Moved to... * module.cc: ...here. * openmp.c: Moved to... * openmp.cc: ...here. * options.c: Moved to... * options.cc: ...here. * parse.c: Moved to... * parse.cc: ...here. * primary.c: Moved to... * primary.cc: ...here. * resolve.c: Moved to... * resolve.cc: ...here. * scanner.c: Moved to... * scanner.cc: ...here. * simplify.c: Moved to... * simplify.cc: ...here. * st.c: Moved to... * st.cc: ...here. * symbol.c: Moved to... * symbol.cc: ...here. * target-memory.c: Moved to... * target-memory.cc: ...here. * trans-array.c: Moved to... * trans-array.cc: ...here. * trans-common.c: Moved to... * trans-common.cc: ...here. * trans-const.c: Moved to... * trans-const.cc: ...here. * trans-decl.c: Moved to... * trans-decl.cc: ...here. * trans-expr.c: Moved to... * trans-expr.cc: ...here. * trans-intrinsic.c: Moved to... * trans-intrinsic.cc: ...here. * trans-io.c: Moved to... * trans-io.cc: ...here. * trans-openmp.c: Moved to... * trans-openmp.cc: ...here. * trans-stmt.c: Moved to... * trans-stmt.cc: ...here. * trans-types.c: Moved to... * trans-types.cc: ...here. * trans.c: Moved to... * trans.cc: ...here. gcc/go/ChangeLog: * go-backend.c: Moved to... * go-backend.cc: ...here. * go-lang.c: Moved to... * go-lang.cc: ...here. * gospec.c: Moved to... * gospec.cc: ...here. gcc/jit/ChangeLog: * dummy-frontend.c: Moved to... * dummy-frontend.cc: ...here. * jit-builtins.c: Moved to... * jit-builtins.cc: ...here. * jit-logging.c: Moved to... * jit-logging.cc: ...here. * jit-playback.c: Moved to... * jit-playback.cc: ...here. * jit-recording.c: Moved to... * jit-recording.cc: ...here. * jit-result.c: Moved to... * jit-result.cc: ...here. * jit-spec.c: Moved to... * jit-spec.cc: ...here. * jit-tempdir.c: Moved to... * jit-tempdir.cc: ...here. * jit-w32.c: Moved to... * jit-w32.cc: ...here. * libgccjit.c: Moved to... * libgccjit.cc: ...here. gcc/lto/ChangeLog: * common.c: Moved to... * common.cc: ...here. * lto-common.c: Moved to... * 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Diffstat (limited to 'gcc/tree-ssa-dse.c')
-rw-r--r--gcc/tree-ssa-dse.c1515
1 files changed, 0 insertions, 1515 deletions
diff --git a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c
deleted file mode 100644
index ed73bee..0000000
--- a/gcc/tree-ssa-dse.c
+++ /dev/null
@@ -1,1515 +0,0 @@
-/* Dead and redundant store elimination
- Copyright (C) 2004-2022 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 "backend.h"
-#include "rtl.h"
-#include "tree.h"
-#include "gimple.h"
-#include "tree-pass.h"
-#include "ssa.h"
-#include "gimple-pretty-print.h"
-#include "fold-const.h"
-#include "gimple-iterator.h"
-#include "tree-cfg.h"
-#include "tree-dfa.h"
-#include "tree-cfgcleanup.h"
-#include "alias.h"
-#include "tree-ssa-loop.h"
-#include "tree-ssa-dse.h"
-#include "builtins.h"
-#include "gimple-fold.h"
-#include "gimplify.h"
-#include "tree-eh.h"
-#include "cfganal.h"
-#include "cgraph.h"
-#include "ipa-modref-tree.h"
-#include "ipa-modref.h"
-
-/* This file implements dead store elimination.
-
- A dead store is a store into a memory location which will later be
- overwritten by another store without any intervening loads. In this
- case the earlier store can be deleted or trimmed if the store
- was partially dead.
-
- A redundant store is a store into a memory location which stores
- the exact same value as a prior store to the same memory location.
- While this can often be handled by dead store elimination, removing
- the redundant store is often better than removing or trimming the
- dead store.
-
- In our SSA + virtual operand world we use immediate uses of virtual
- operands to detect these cases. If a store's virtual definition
- is used precisely once by a later store to the same location which
- post dominates the first store, then the first store is dead. If
- the data stored is the same, then the second store is redundant.
-
- The single use of the store's virtual definition ensures that
- there are no intervening aliased loads and the requirement that
- the second load post dominate the first ensures that if the earlier
- store executes, then the later stores will execute before the function
- exits.
-
- It may help to think of this as first moving the earlier store to
- the point immediately before the later store. Again, the single
- use of the virtual definition and the post-dominance relationship
- ensure that such movement would be safe. Clearly if there are
- back to back stores, then the second is makes the first dead. If
- the second store stores the same value, then the second store is
- redundant.
-
- Reviewing section 10.7.2 in Morgan's "Building an Optimizing Compiler"
- may also help in understanding this code since it discusses the
- relationship between dead store and redundant load elimination. In
- fact, they are the same transformation applied to different views of
- the CFG. */
-
-static void delete_dead_or_redundant_call (gimple_stmt_iterator *, const char *);
-
-/* Bitmap of blocks that have had EH statements cleaned. We should
- remove their dead edges eventually. */
-static bitmap need_eh_cleanup;
-static bitmap need_ab_cleanup;
-
-/* STMT is a statement that may write into memory. Analyze it and
- initialize WRITE to describe how STMT affects memory.
-
- Return TRUE if the statement was analyzed, FALSE otherwise.
-
- It is always safe to return FALSE. But typically better optimziation
- can be achieved by analyzing more statements. */
-
-static bool
-initialize_ao_ref_for_dse (gimple *stmt, ao_ref *write)
-{
- /* It's advantageous to handle certain mem* functions. */
- if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
- {
- switch (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)))
- {
- case BUILT_IN_MEMCPY:
- case BUILT_IN_MEMMOVE:
- case BUILT_IN_MEMSET:
- case BUILT_IN_MEMCPY_CHK:
- case BUILT_IN_MEMMOVE_CHK:
- case BUILT_IN_MEMSET_CHK:
- case BUILT_IN_STRNCPY:
- case BUILT_IN_STRNCPY_CHK:
- {
- tree size = gimple_call_arg (stmt, 2);
- tree ptr = gimple_call_arg (stmt, 0);
- ao_ref_init_from_ptr_and_size (write, ptr, size);
- return true;
- }
-
- /* A calloc call can never be dead, but it can make
- subsequent stores redundant if they store 0 into
- the same memory locations. */
- case BUILT_IN_CALLOC:
- {
- tree nelem = gimple_call_arg (stmt, 0);
- tree selem = gimple_call_arg (stmt, 1);
- tree lhs;
- if (TREE_CODE (nelem) == INTEGER_CST
- && TREE_CODE (selem) == INTEGER_CST
- && (lhs = gimple_call_lhs (stmt)) != NULL_TREE)
- {
- tree size = fold_build2 (MULT_EXPR, TREE_TYPE (nelem),
- nelem, selem);
- ao_ref_init_from_ptr_and_size (write, lhs, size);
- return true;
- }
- }
-
- default:
- break;
- }
- }
- else if (tree lhs = gimple_get_lhs (stmt))
- {
- if (TREE_CODE (lhs) != SSA_NAME)
- {
- ao_ref_init (write, lhs);
- return true;
- }
- }
- return false;
-}
-
-/* Given REF from the alias oracle, return TRUE if it is a valid
- kill memory reference for dead store elimination, false otherwise.
-
- In particular, the reference must have a known base, known maximum
- size, start at a byte offset and have a size that is one or more
- bytes. */
-
-static bool
-valid_ao_ref_kill_for_dse (ao_ref *ref)
-{
- return (ao_ref_base (ref)
- && known_size_p (ref->max_size)
- && maybe_ne (ref->size, 0)
- && known_eq (ref->max_size, ref->size)
- && known_ge (ref->offset, 0));
-}
-
-/* Given REF from the alias oracle, return TRUE if it is a valid
- load or store memory reference for dead store elimination, false otherwise.
-
- Unlike for valid_ao_ref_kill_for_dse we can accept writes where max_size
- is not same as size since we can handle conservatively the larger range. */
-
-static bool
-valid_ao_ref_for_dse (ao_ref *ref)
-{
- return (ao_ref_base (ref)
- && known_size_p (ref->max_size)
- && known_ge (ref->offset, 0));
-}
-
-/* Initialize OFFSET and SIZE to a range known to contain REF
- where the boundaries are divisible by BITS_PER_UNIT (bit still in bits).
- Return false if this is impossible. */
-
-static bool
-get_byte_aligned_range_containing_ref (ao_ref *ref, poly_int64 *offset,
- HOST_WIDE_INT *size)
-{
- if (!known_size_p (ref->max_size))
- return false;
- *offset = aligned_lower_bound (ref->offset, BITS_PER_UNIT);
- poly_int64 end = aligned_upper_bound (ref->offset + ref->max_size,
- BITS_PER_UNIT);
- return (end - *offset).is_constant (size);
-}
-
-/* Initialize OFFSET and SIZE to a range known to be contained REF
- where the boundaries are divisible by BITS_PER_UNIT (but still in bits).
- Return false if this is impossible. */
-
-static bool
-get_byte_aligned_range_contained_in_ref (ao_ref *ref, poly_int64 *offset,
- HOST_WIDE_INT *size)
-{
- if (!known_size_p (ref->size)
- || !known_eq (ref->size, ref->max_size))
- return false;
- *offset = aligned_upper_bound (ref->offset, BITS_PER_UNIT);
- poly_int64 end = aligned_lower_bound (ref->offset + ref->max_size,
- BITS_PER_UNIT);
- /* For bit accesses we can get -1 here, but also 0 sized kill is not
- useful. */
- if (!known_gt (end, *offset))
- return false;
- return (end - *offset).is_constant (size);
-}
-
-/* Compute byte range (returned iN REF_OFFSET and RET_SIZE) for access COPY
- inside REF. If KILL is true, then COPY represent a kill and the byte range
- needs to be fully contained in bit range given by COPY. If KILL is false
- then the byte range returned must contain the range of COPY. */
-
-static bool
-get_byte_range (ao_ref *copy, ao_ref *ref, bool kill,
- HOST_WIDE_INT *ret_offset, HOST_WIDE_INT *ret_size)
-{
- HOST_WIDE_INT copy_size, ref_size;
- poly_int64 copy_offset, ref_offset;
- HOST_WIDE_INT diff;
-
- /* First translate from bits to bytes, rounding to bigger or smaller ranges
- as needed. Kills needs to be always rounded to smaller ranges while
- uses and stores to larger ranges. */
- if (kill)
- {
- if (!get_byte_aligned_range_contained_in_ref (copy, &copy_offset,
- &copy_size))
- return false;
- }
- else
- {
- if (!get_byte_aligned_range_containing_ref (copy, &copy_offset,
- &copy_size))
- return false;
- }
-
- if (!get_byte_aligned_range_containing_ref (ref, &ref_offset, &ref_size)
- || !ordered_p (copy_offset, ref_offset))
- return false;
-
- /* Switch sizes from bits to bytes so we do not need to care about
- overflows. Offset calculation needs to stay in bits until we compute
- the difference and can switch to HOST_WIDE_INT. */
- copy_size /= BITS_PER_UNIT;
- ref_size /= BITS_PER_UNIT;
-
- /* If COPY starts before REF, then reset the beginning of
- COPY to match REF and decrease the size of COPY by the
- number of bytes removed from COPY. */
- if (maybe_lt (copy_offset, ref_offset))
- {
- if (!(ref_offset - copy_offset).is_constant (&diff)
- || copy_size < diff / BITS_PER_UNIT)
- return false;
- copy_size -= diff / BITS_PER_UNIT;
- copy_offset = ref_offset;
- }
-
- if (!(copy_offset - ref_offset).is_constant (&diff)
- || ref_size <= diff / BITS_PER_UNIT)
- return false;
-
- /* If COPY extends beyond REF, chop off its size appropriately. */
- HOST_WIDE_INT limit = ref_size - diff / BITS_PER_UNIT;
-
- if (copy_size > limit)
- copy_size = limit;
- *ret_size = copy_size;
- if (!(copy_offset - ref_offset).is_constant (ret_offset))
- return false;
- *ret_offset /= BITS_PER_UNIT;
- return true;
-}
-
-/* Update LIVE_BYTES tracking REF for write to WRITE:
- Verify we have the same base memory address, the write
- has a known size and overlaps with REF. */
-static void
-clear_live_bytes_for_ref (sbitmap live_bytes, ao_ref *ref, ao_ref *write)
-{
- HOST_WIDE_INT start, size;
-
- if (valid_ao_ref_kill_for_dse (write)
- && operand_equal_p (write->base, ref->base, OEP_ADDRESS_OF)
- && get_byte_range (write, ref, true, &start, &size))
- bitmap_clear_range (live_bytes, start, size);
-}
-
-/* Clear any bytes written by STMT from the bitmap LIVE_BYTES. The base
- address written by STMT must match the one found in REF, which must
- have its base address previously initialized.
-
- This routine must be conservative. If we don't know the offset or
- actual size written, assume nothing was written. */
-
-static void
-clear_bytes_written_by (sbitmap live_bytes, gimple *stmt, ao_ref *ref)
-{
- ao_ref write;
-
- if (gcall *call = dyn_cast <gcall *> (stmt))
- {
- bool interposed;
- modref_summary *summary = get_modref_function_summary (call, &interposed);
-
- if (summary && !interposed)
- for (auto kill : summary->kills)
- if (kill.get_ao_ref (as_a <gcall *> (stmt), &write))
- clear_live_bytes_for_ref (live_bytes, ref, &write);
- }
- if (!initialize_ao_ref_for_dse (stmt, &write))
- return;
-
- clear_live_bytes_for_ref (live_bytes, ref, &write);
-}
-
-/* REF is a memory write. Extract relevant information from it and
- initialize the LIVE_BYTES bitmap. If successful, return TRUE.
- Otherwise return FALSE. */
-
-static bool
-setup_live_bytes_from_ref (ao_ref *ref, sbitmap live_bytes)
-{
- HOST_WIDE_INT const_size;
- if (valid_ao_ref_for_dse (ref)
- && ((aligned_upper_bound (ref->offset + ref->max_size, BITS_PER_UNIT)
- - aligned_lower_bound (ref->offset,
- BITS_PER_UNIT)).is_constant (&const_size))
- && (const_size / BITS_PER_UNIT <= param_dse_max_object_size)
- && const_size > 1)
- {
- bitmap_clear (live_bytes);
- bitmap_set_range (live_bytes, 0, const_size / BITS_PER_UNIT);
- return true;
- }
- return false;
-}
-
-/* Compute the number of elements that we can trim from the head and
- tail of ORIG resulting in a bitmap that is a superset of LIVE.
-
- Store the number of elements trimmed from the head and tail in
- TRIM_HEAD and TRIM_TAIL.
-
- STMT is the statement being trimmed and is used for debugging dump
- output only. */
-
-static void
-compute_trims (ao_ref *ref, sbitmap live, int *trim_head, int *trim_tail,
- gimple *stmt)
-{
- /* We use sbitmaps biased such that ref->offset is bit zero and the bitmap
- extends through ref->size. So we know that in the original bitmap
- bits 0..ref->size were true. We don't actually need the bitmap, just
- the REF to compute the trims. */
-
- /* Now identify how much, if any of the tail we can chop off. */
- HOST_WIDE_INT const_size;
- int last_live = bitmap_last_set_bit (live);
- if (ref->size.is_constant (&const_size))
- {
- int last_orig = (const_size / BITS_PER_UNIT) - 1;
- /* We can leave inconvenient amounts on the tail as
- residual handling in mem* and str* functions is usually
- reasonably efficient. */
- *trim_tail = last_orig - last_live;
-
- /* But don't trim away out of bounds accesses, as this defeats
- proper warnings.
-
- We could have a type with no TYPE_SIZE_UNIT or we could have a VLA
- where TYPE_SIZE_UNIT is not a constant. */
- if (*trim_tail
- && TYPE_SIZE_UNIT (TREE_TYPE (ref->base))
- && TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (ref->base))) == INTEGER_CST
- && compare_tree_int (TYPE_SIZE_UNIT (TREE_TYPE (ref->base)),
- last_orig) <= 0)
- *trim_tail = 0;
- }
- else
- *trim_tail = 0;
-
- /* Identify how much, if any of the head we can chop off. */
- int first_orig = 0;
- int first_live = bitmap_first_set_bit (live);
- *trim_head = first_live - first_orig;
-
- /* If more than a word remains, then make sure to keep the
- starting point at least word aligned. */
- if (last_live - first_live > UNITS_PER_WORD)
- *trim_head &= ~(UNITS_PER_WORD - 1);
-
- if ((*trim_head || *trim_tail)
- && dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, " Trimming statement (head = %d, tail = %d): ",
- *trim_head, *trim_tail);
- print_gimple_stmt (dump_file, stmt, 0, dump_flags);
- fprintf (dump_file, "\n");
- }
-}
-
-/* STMT initializes an object from COMPLEX_CST where one or more of the
- bytes written may be dead stores. REF is a representation of the
- memory written. LIVE is the bitmap of stores that are actually live.
-
- Attempt to rewrite STMT so that only the real or imaginary part of
- the object is actually stored. */
-
-static void
-maybe_trim_complex_store (ao_ref *ref, sbitmap live, gimple *stmt)
-{
- int trim_head, trim_tail;
- compute_trims (ref, live, &trim_head, &trim_tail, stmt);
-
- /* The amount of data trimmed from the head or tail must be at
- least half the size of the object to ensure we're trimming
- the entire real or imaginary half. By writing things this
- way we avoid more O(n) bitmap operations. */
- if (known_ge (trim_tail * 2 * BITS_PER_UNIT, ref->size))
- {
- /* TREE_REALPART is live */
- tree x = TREE_REALPART (gimple_assign_rhs1 (stmt));
- tree y = gimple_assign_lhs (stmt);
- y = build1 (REALPART_EXPR, TREE_TYPE (x), y);
- gimple_assign_set_lhs (stmt, y);
- gimple_assign_set_rhs1 (stmt, x);
- }
- else if (known_ge (trim_head * 2 * BITS_PER_UNIT, ref->size))
- {
- /* TREE_IMAGPART is live */
- tree x = TREE_IMAGPART (gimple_assign_rhs1 (stmt));
- tree y = gimple_assign_lhs (stmt);
- y = build1 (IMAGPART_EXPR, TREE_TYPE (x), y);
- gimple_assign_set_lhs (stmt, y);
- gimple_assign_set_rhs1 (stmt, x);
- }
-
- /* Other cases indicate parts of both the real and imag subobjects
- are live. We do not try to optimize those cases. */
-}
-
-/* STMT initializes an object using a CONSTRUCTOR where one or more of the
- bytes written are dead stores. ORIG is the bitmap of bytes stored by
- STMT. LIVE is the bitmap of stores that are actually live.
-
- Attempt to rewrite STMT so that only the real or imaginary part of
- the object is actually stored.
-
- The most common case for getting here is a CONSTRUCTOR with no elements
- being used to zero initialize an object. We do not try to handle other
- cases as those would force us to fully cover the object with the
- CONSTRUCTOR node except for the components that are dead. */
-
-static void
-maybe_trim_constructor_store (ao_ref *ref, sbitmap live, gimple *stmt)
-{
- tree ctor = gimple_assign_rhs1 (stmt);
-
- /* This is the only case we currently handle. It actually seems to
- catch most cases of actual interest. */
- gcc_assert (CONSTRUCTOR_NELTS (ctor) == 0);
-
- int head_trim = 0;
- int tail_trim = 0;
- compute_trims (ref, live, &head_trim, &tail_trim, stmt);
-
- /* Now we want to replace the constructor initializer
- with memset (object + head_trim, 0, size - head_trim - tail_trim). */
- if (head_trim || tail_trim)
- {
- /* We want &lhs for the MEM_REF expression. */
- tree lhs_addr = build_fold_addr_expr (gimple_assign_lhs (stmt));
-
- if (! is_gimple_min_invariant (lhs_addr))
- return;
-
- /* The number of bytes for the new constructor. */
- poly_int64 ref_bytes = exact_div (ref->size, BITS_PER_UNIT);
- poly_int64 count = ref_bytes - head_trim - tail_trim;
-
- /* And the new type for the CONSTRUCTOR. Essentially it's just
- a char array large enough to cover the non-trimmed parts of
- the original CONSTRUCTOR. Note we want explicit bounds here
- so that we know how many bytes to clear when expanding the
- CONSTRUCTOR. */
- tree type = build_array_type_nelts (char_type_node, count);
-
- /* Build a suitable alias type rather than using alias set zero
- to avoid pessimizing. */
- tree alias_type = reference_alias_ptr_type (gimple_assign_lhs (stmt));
-
- /* Build a MEM_REF representing the whole accessed area, starting
- at the first byte not trimmed. */
- tree exp = fold_build2 (MEM_REF, type, lhs_addr,
- build_int_cst (alias_type, head_trim));
-
- /* Now update STMT with a new RHS and LHS. */
- gimple_assign_set_lhs (stmt, exp);
- gimple_assign_set_rhs1 (stmt, build_constructor (type, NULL));
- }
-}
-
-/* STMT is a memcpy, memmove or memset. Decrement the number of bytes
- copied/set by DECREMENT. */
-static void
-decrement_count (gimple *stmt, int decrement)
-{
- tree *countp = gimple_call_arg_ptr (stmt, 2);
- gcc_assert (TREE_CODE (*countp) == INTEGER_CST);
- *countp = wide_int_to_tree (TREE_TYPE (*countp), (TREE_INT_CST_LOW (*countp)
- - decrement));
-}
-
-static void
-increment_start_addr (gimple *stmt, tree *where, int increment)
-{
- if (tree lhs = gimple_call_lhs (stmt))
- if (where == gimple_call_arg_ptr (stmt, 0))
- {
- gassign *newop = gimple_build_assign (lhs, unshare_expr (*where));
- gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
- gsi_insert_after (&gsi, newop, GSI_SAME_STMT);
- gimple_call_set_lhs (stmt, NULL_TREE);
- update_stmt (stmt);
- }
-
- if (TREE_CODE (*where) == SSA_NAME)
- {
- tree tem = make_ssa_name (TREE_TYPE (*where));
- gassign *newop
- = gimple_build_assign (tem, POINTER_PLUS_EXPR, *where,
- build_int_cst (sizetype, increment));
- gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
- gsi_insert_before (&gsi, newop, GSI_SAME_STMT);
- *where = tem;
- update_stmt (stmt);
- return;
- }
-
- *where = build_fold_addr_expr (fold_build2 (MEM_REF, char_type_node,
- *where,
- build_int_cst (ptr_type_node,
- increment)));
-}
-
-/* STMT is builtin call that writes bytes in bitmap ORIG, some bytes are dead
- (ORIG & ~NEW) and need not be stored. Try to rewrite STMT to reduce
- the amount of data it actually writes.
-
- Right now we only support trimming from the head or the tail of the
- memory region. In theory we could split the mem* call, but it's
- likely of marginal value. */
-
-static void
-maybe_trim_memstar_call (ao_ref *ref, sbitmap live, gimple *stmt)
-{
- int head_trim, tail_trim;
- switch (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)))
- {
- case BUILT_IN_STRNCPY:
- case BUILT_IN_STRNCPY_CHK:
- compute_trims (ref, live, &head_trim, &tail_trim, stmt);
- if (head_trim)
- {
- /* Head trimming of strncpy is only possible if we can
- prove all bytes we would trim are non-zero (or we could
- turn the strncpy into memset if there must be zero
- among the head trimmed bytes). If we don't know anything
- about those bytes, the presence or absence of '\0' bytes
- in there will affect whether it acts for the non-trimmed
- bytes as memset or memcpy/strncpy. */
- c_strlen_data lendata = { };
- int orig_head_trim = head_trim;
- tree srcstr = gimple_call_arg (stmt, 1);
- if (!get_range_strlen (srcstr, &lendata, /*eltsize=*/1)
- || !tree_fits_uhwi_p (lendata.minlen))
- head_trim = 0;
- else if (tree_to_uhwi (lendata.minlen) < (unsigned) head_trim)
- {
- head_trim = tree_to_uhwi (lendata.minlen);
- if ((orig_head_trim & (UNITS_PER_WORD - 1)) == 0)
- head_trim &= ~(UNITS_PER_WORD - 1);
- }
- if (orig_head_trim != head_trim
- && dump_file
- && (dump_flags & TDF_DETAILS))
- fprintf (dump_file,
- " Adjusting strncpy trimming to (head = %d,"
- " tail = %d)\n", head_trim, tail_trim);
- }
- goto do_memcpy;
-
- case BUILT_IN_MEMCPY:
- case BUILT_IN_MEMMOVE:
- case BUILT_IN_MEMCPY_CHK:
- case BUILT_IN_MEMMOVE_CHK:
- compute_trims (ref, live, &head_trim, &tail_trim, stmt);
-
- do_memcpy:
- /* Tail trimming is easy, we can just reduce the count. */
- if (tail_trim)
- decrement_count (stmt, tail_trim);
-
- /* Head trimming requires adjusting all the arguments. */
- if (head_trim)
- {
- /* For __*_chk need to adjust also the last argument. */
- if (gimple_call_num_args (stmt) == 4)
- {
- tree size = gimple_call_arg (stmt, 3);
- if (!tree_fits_uhwi_p (size))
- break;
- if (!integer_all_onesp (size))
- {
- unsigned HOST_WIDE_INT sz = tree_to_uhwi (size);
- if (sz < (unsigned) head_trim)
- break;
- tree arg = wide_int_to_tree (TREE_TYPE (size),
- sz - head_trim);
- gimple_call_set_arg (stmt, 3, arg);
- }
- }
- tree *dst = gimple_call_arg_ptr (stmt, 0);
- increment_start_addr (stmt, dst, head_trim);
- tree *src = gimple_call_arg_ptr (stmt, 1);
- increment_start_addr (stmt, src, head_trim);
- decrement_count (stmt, head_trim);
- }
- break;
-
- case BUILT_IN_MEMSET:
- case BUILT_IN_MEMSET_CHK:
- compute_trims (ref, live, &head_trim, &tail_trim, stmt);
-
- /* Tail trimming is easy, we can just reduce the count. */
- if (tail_trim)
- decrement_count (stmt, tail_trim);
-
- /* Head trimming requires adjusting all the arguments. */
- if (head_trim)
- {
- /* For __*_chk need to adjust also the last argument. */
- if (gimple_call_num_args (stmt) == 4)
- {
- tree size = gimple_call_arg (stmt, 3);
- if (!tree_fits_uhwi_p (size))
- break;
- if (!integer_all_onesp (size))
- {
- unsigned HOST_WIDE_INT sz = tree_to_uhwi (size);
- if (sz < (unsigned) head_trim)
- break;
- tree arg = wide_int_to_tree (TREE_TYPE (size),
- sz - head_trim);
- gimple_call_set_arg (stmt, 3, arg);
- }
- }
- tree *dst = gimple_call_arg_ptr (stmt, 0);
- increment_start_addr (stmt, dst, head_trim);
- decrement_count (stmt, head_trim);
- }
- break;
-
- default:
- break;
- }
-}
-
-/* STMT is a memory write where one or more bytes written are dead
- stores. ORIG is the bitmap of bytes stored by STMT. LIVE is the
- bitmap of stores that are actually live.
-
- Attempt to rewrite STMT so that it writes fewer memory locations. Right
- now we only support trimming at the start or end of the memory region.
- It's not clear how much there is to be gained by trimming from the middle
- of the region. */
-
-static void
-maybe_trim_partially_dead_store (ao_ref *ref, sbitmap live, gimple *stmt)
-{
- if (is_gimple_assign (stmt)
- && TREE_CODE (gimple_assign_lhs (stmt)) != TARGET_MEM_REF)
- {
- switch (gimple_assign_rhs_code (stmt))
- {
- case CONSTRUCTOR:
- maybe_trim_constructor_store (ref, live, stmt);
- break;
- case COMPLEX_CST:
- maybe_trim_complex_store (ref, live, stmt);
- break;
- default:
- break;
- }
- }
-}
-
-/* Return TRUE if USE_REF reads bytes from LIVE where live is
- derived from REF, a write reference.
-
- While this routine may modify USE_REF, it's passed by value, not
- location. So callers do not see those modifications. */
-
-static bool
-live_bytes_read (ao_ref *use_ref, ao_ref *ref, sbitmap live)
-{
- /* We have already verified that USE_REF and REF hit the same object.
- Now verify that there's actually an overlap between USE_REF and REF. */
- HOST_WIDE_INT start, size;
- if (get_byte_range (use_ref, ref, false, &start, &size))
- {
- /* If USE_REF covers all of REF, then it will hit one or more
- live bytes. This avoids useless iteration over the bitmap
- below. */
- if (start == 0 && known_eq (size * 8, ref->size))
- return true;
-
- /* Now check if any of the remaining bits in use_ref are set in LIVE. */
- return bitmap_bit_in_range_p (live, start, (start + size - 1));
- }
- return true;
-}
-
-/* Callback for dse_classify_store calling for_each_index. Verify that
- indices are invariant in the loop with backedge PHI in basic-block DATA. */
-
-static bool
-check_name (tree, tree *idx, void *data)
-{
- basic_block phi_bb = (basic_block) data;
- if (TREE_CODE (*idx) == SSA_NAME
- && !SSA_NAME_IS_DEFAULT_DEF (*idx)
- && dominated_by_p (CDI_DOMINATORS, gimple_bb (SSA_NAME_DEF_STMT (*idx)),
- phi_bb))
- return false;
- return true;
-}
-
-/* STMT stores the value 0 into one or more memory locations
- (via memset, empty constructor, calloc call, etc).
-
- See if there is a subsequent store of the value 0 to one
- or more of the same memory location(s). If so, the subsequent
- store is redundant and can be removed.
-
- The subsequent stores could be via memset, empty constructors,
- simple MEM stores, etc. */
-
-static void
-dse_optimize_redundant_stores (gimple *stmt)
-{
- int cnt = 0;
-
- /* TBAA state of STMT, if it is a call it is effectively alias-set zero. */
- alias_set_type earlier_set = 0;
- alias_set_type earlier_base_set = 0;
- if (is_gimple_assign (stmt))
- {
- ao_ref lhs_ref;
- ao_ref_init (&lhs_ref, gimple_assign_lhs (stmt));
- earlier_set = ao_ref_alias_set (&lhs_ref);
- earlier_base_set = ao_ref_base_alias_set (&lhs_ref);
- }
-
- /* We could do something fairly complex and look through PHIs
- like DSE_CLASSIFY_STORE, but it doesn't seem to be worth
- the effort.
-
- Look at all the immediate uses of the VDEF (which are obviously
- dominated by STMT). See if one or more stores 0 into the same
- memory locations a STMT, if so remove the immediate use statements. */
- tree defvar = gimple_vdef (stmt);
- imm_use_iterator ui;
- gimple *use_stmt;
- FOR_EACH_IMM_USE_STMT (use_stmt, ui, defvar)
- {
- /* Limit stmt walking. */
- if (++cnt > param_dse_max_alias_queries_per_store)
- break;
-
- /* If USE_STMT stores 0 into one or more of the same locations
- as STMT and STMT would kill USE_STMT, then we can just remove
- USE_STMT. */
- tree fndecl;
- if ((is_gimple_assign (use_stmt)
- && gimple_vdef (use_stmt)
- && (gimple_assign_single_p (use_stmt)
- && initializer_zerop (gimple_assign_rhs1 (use_stmt))))
- || (gimple_call_builtin_p (use_stmt, BUILT_IN_NORMAL)
- && (fndecl = gimple_call_fndecl (use_stmt)) != NULL
- && (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_MEMSET
- || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_MEMSET_CHK)
- && integer_zerop (gimple_call_arg (use_stmt, 1))))
- {
- ao_ref write;
-
- if (!initialize_ao_ref_for_dse (use_stmt, &write))
- break;
-
- if (valid_ao_ref_for_dse (&write)
- && stmt_kills_ref_p (stmt, &write))
- {
- gimple_stmt_iterator gsi = gsi_for_stmt (use_stmt);
- if (is_gimple_assign (use_stmt))
- {
- ao_ref lhs_ref;
- ao_ref_init (&lhs_ref, gimple_assign_lhs (use_stmt));
- if ((earlier_set == ao_ref_alias_set (&lhs_ref)
- || alias_set_subset_of (ao_ref_alias_set (&lhs_ref),
- earlier_set))
- && (earlier_base_set == ao_ref_base_alias_set (&lhs_ref)
- || alias_set_subset_of
- (ao_ref_base_alias_set (&lhs_ref),
- earlier_base_set)))
- delete_dead_or_redundant_assignment (&gsi, "redundant",
- need_eh_cleanup,
- need_ab_cleanup);
- }
- else if (is_gimple_call (use_stmt))
- {
- if ((earlier_set == 0
- || alias_set_subset_of (0, earlier_set))
- && (earlier_base_set == 0
- || alias_set_subset_of (0, earlier_base_set)))
- delete_dead_or_redundant_call (&gsi, "redundant");
- }
- else
- gcc_unreachable ();
- }
- }
- }
-}
-
-/* A helper of dse_optimize_stmt.
- Given a GIMPLE_ASSIGN in STMT that writes to REF, classify it
- according to downstream uses and defs. Sets *BY_CLOBBER_P to true
- if only clobber statements influenced the classification result.
- Returns the classification. */
-
-dse_store_status
-dse_classify_store (ao_ref *ref, gimple *stmt,
- bool byte_tracking_enabled, sbitmap live_bytes,
- bool *by_clobber_p, tree stop_at_vuse)
-{
- gimple *temp;
- int cnt = 0;
- auto_bitmap visited;
-
- if (by_clobber_p)
- *by_clobber_p = true;
-
- /* Find the first dominated statement that clobbers (part of) the
- memory stmt stores to with no intermediate statement that may use
- part of the memory stmt stores. That is, find a store that may
- prove stmt to be a dead store. */
- temp = stmt;
- do
- {
- gimple *use_stmt;
- imm_use_iterator ui;
- bool fail = false;
- tree defvar;
-
- if (gimple_code (temp) == GIMPLE_PHI)
- {
- /* If we visit this PHI by following a backedge then we have to
- make sure ref->ref only refers to SSA names that are invariant
- with respect to the loop represented by this PHI node. */
- if (dominated_by_p (CDI_DOMINATORS, gimple_bb (stmt),
- gimple_bb (temp))
- && !for_each_index (ref->ref ? &ref->ref : &ref->base,
- check_name, gimple_bb (temp)))
- return DSE_STORE_LIVE;
- defvar = PHI_RESULT (temp);
- bitmap_set_bit (visited, SSA_NAME_VERSION (defvar));
- }
- else
- defvar = gimple_vdef (temp);
-
- /* If we're instructed to stop walking at region boundary, do so. */
- if (defvar == stop_at_vuse)
- return DSE_STORE_LIVE;
-
- auto_vec<gimple *, 10> defs;
- gimple *first_phi_def = NULL;
- gimple *last_phi_def = NULL;
- FOR_EACH_IMM_USE_STMT (use_stmt, ui, defvar)
- {
- /* Limit stmt walking. */
- if (++cnt > param_dse_max_alias_queries_per_store)
- {
- fail = true;
- break;
- }
-
- /* In simple cases we can look through PHI nodes, but we
- have to be careful with loops and with memory references
- containing operands that are also operands of PHI nodes.
- See gcc.c-torture/execute/20051110-*.c. */
- if (gimple_code (use_stmt) == GIMPLE_PHI)
- {
- /* If we already visited this PHI ignore it for further
- processing. */
- if (!bitmap_bit_p (visited,
- SSA_NAME_VERSION (PHI_RESULT (use_stmt))))
- {
- defs.safe_push (use_stmt);
- if (!first_phi_def)
- first_phi_def = use_stmt;
- last_phi_def = use_stmt;
- }
- }
- /* If the statement is a use the store is not dead. */
- else if (ref_maybe_used_by_stmt_p (use_stmt, ref))
- {
- /* Handle common cases where we can easily build an ao_ref
- structure for USE_STMT and in doing so we find that the
- references hit non-live bytes and thus can be ignored.
-
- TODO: We can also use modref summary to handle calls. */
- if (byte_tracking_enabled
- && is_gimple_assign (use_stmt))
- {
- ao_ref use_ref;
- ao_ref_init (&use_ref, gimple_assign_rhs1 (use_stmt));
- if (valid_ao_ref_for_dse (&use_ref)
- && operand_equal_p (use_ref.base, ref->base,
- OEP_ADDRESS_OF)
- && !live_bytes_read (&use_ref, ref, live_bytes))
- {
- /* If this is a store, remember it as we possibly
- need to walk the defs uses. */
- if (gimple_vdef (use_stmt))
- defs.safe_push (use_stmt);
- continue;
- }
- }
-
- fail = true;
- break;
- }
- /* We have visited ourselves already so ignore STMT for the
- purpose of chaining. */
- else if (use_stmt == stmt)
- ;
- /* If this is a store, remember it as we possibly need to walk the
- defs uses. */
- else if (gimple_vdef (use_stmt))
- defs.safe_push (use_stmt);
- }
-
- if (fail)
- {
- /* STMT might be partially dead and we may be able to reduce
- how many memory locations it stores into. */
- if (byte_tracking_enabled && !gimple_clobber_p (stmt))
- return DSE_STORE_MAYBE_PARTIAL_DEAD;
- return DSE_STORE_LIVE;
- }
-
- /* If we didn't find any definition this means the store is dead
- if it isn't a store to global reachable memory. In this case
- just pretend the stmt makes itself dead. Otherwise fail. */
- if (defs.is_empty ())
- {
- if (ref_may_alias_global_p (ref))
- return DSE_STORE_LIVE;
-
- if (by_clobber_p)
- *by_clobber_p = false;
- return DSE_STORE_DEAD;
- }
-
- /* Process defs and remove those we need not process further. */
- for (unsigned i = 0; i < defs.length ();)
- {
- gimple *def = defs[i];
- gimple *use_stmt;
- use_operand_p use_p;
- tree vdef = (gimple_code (def) == GIMPLE_PHI
- ? gimple_phi_result (def) : gimple_vdef (def));
- /* If the path to check starts with a kill we do not need to
- process it further.
- ??? With byte tracking we need only kill the bytes currently
- live. */
- if (stmt_kills_ref_p (def, ref))
- {
- if (by_clobber_p && !gimple_clobber_p (def))
- *by_clobber_p = false;
- defs.unordered_remove (i);
- }
- /* If the path ends here we do not need to process it further.
- This for example happens with calls to noreturn functions. */
- else if (has_zero_uses (vdef))
- {
- /* But if the store is to global memory it is definitely
- not dead. */
- if (ref_may_alias_global_p (ref))
- return DSE_STORE_LIVE;
- defs.unordered_remove (i);
- }
- /* In addition to kills we can remove defs whose only use
- is another def in defs. That can only ever be PHIs of which
- we track two for simplicity reasons, the first and last in
- {first,last}_phi_def (we fail for multiple PHIs anyways).
- We can also ignore defs that feed only into
- already visited PHIs. */
- else if (single_imm_use (vdef, &use_p, &use_stmt)
- && (use_stmt == first_phi_def
- || use_stmt == last_phi_def
- || (gimple_code (use_stmt) == GIMPLE_PHI
- && bitmap_bit_p (visited,
- SSA_NAME_VERSION
- (PHI_RESULT (use_stmt))))))
- defs.unordered_remove (i);
- else
- ++i;
- }
-
- /* If all defs kill the ref we are done. */
- if (defs.is_empty ())
- return DSE_STORE_DEAD;
- /* If more than one def survives fail. */
- if (defs.length () > 1)
- {
- /* STMT might be partially dead and we may be able to reduce
- how many memory locations it stores into. */
- if (byte_tracking_enabled && !gimple_clobber_p (stmt))
- return DSE_STORE_MAYBE_PARTIAL_DEAD;
- return DSE_STORE_LIVE;
- }
- temp = defs[0];
-
- /* Track partial kills. */
- if (byte_tracking_enabled)
- {
- clear_bytes_written_by (live_bytes, temp, ref);
- if (bitmap_empty_p (live_bytes))
- {
- if (by_clobber_p && !gimple_clobber_p (temp))
- *by_clobber_p = false;
- return DSE_STORE_DEAD;
- }
- }
- }
- /* Continue walking until there are no more live bytes. */
- while (1);
-}
-
-
-/* Delete a dead call at GSI, which is mem* call of some kind. */
-static void
-delete_dead_or_redundant_call (gimple_stmt_iterator *gsi, const char *type)
-{
- gimple *stmt = gsi_stmt (*gsi);
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, " Deleted %s call: ", type);
- print_gimple_stmt (dump_file, stmt, 0, dump_flags);
- fprintf (dump_file, "\n");
- }
-
- basic_block bb = gimple_bb (stmt);
- tree lhs = gimple_call_lhs (stmt);
- if (lhs)
- {
- tree ptr = gimple_call_arg (stmt, 0);
- gimple *new_stmt = gimple_build_assign (lhs, ptr);
- unlink_stmt_vdef (stmt);
- if (gsi_replace (gsi, new_stmt, true))
- bitmap_set_bit (need_eh_cleanup, bb->index);
- }
- else
- {
- /* Then we need to fix the operand of the consuming stmt. */
- unlink_stmt_vdef (stmt);
-
- /* Remove the dead store. */
- if (gsi_remove (gsi, true))
- bitmap_set_bit (need_eh_cleanup, bb->index);
- release_defs (stmt);
- }
-}
-
-/* Delete a dead store at GSI, which is a gimple assignment. */
-
-void
-delete_dead_or_redundant_assignment (gimple_stmt_iterator *gsi,
- const char *type,
- bitmap need_eh_cleanup,
- bitmap need_ab_cleanup)
-{
- gimple *stmt = gsi_stmt (*gsi);
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, " Deleted %s store: ", type);
- print_gimple_stmt (dump_file, stmt, 0, dump_flags);
- fprintf (dump_file, "\n");
- }
-
- /* Then we need to fix the operand of the consuming stmt. */
- unlink_stmt_vdef (stmt);
-
- /* Remove the dead store. */
- basic_block bb = gimple_bb (stmt);
- if (need_ab_cleanup && stmt_can_make_abnormal_goto (stmt))
- bitmap_set_bit (need_ab_cleanup, bb->index);
- if (gsi_remove (gsi, true) && need_eh_cleanup)
- bitmap_set_bit (need_eh_cleanup, bb->index);
-
- /* And release any SSA_NAMEs set in this statement back to the
- SSA_NAME manager. */
- release_defs (stmt);
-}
-
-/* Try to prove, using modref summary, that all memory written to by a call is
- dead and remove it. Assume that if return value is written to memory
- it is already proved to be dead. */
-
-static bool
-dse_optimize_call (gimple_stmt_iterator *gsi, sbitmap live_bytes)
-{
- gcall *stmt = dyn_cast <gcall *> (gsi_stmt (*gsi));
-
- if (!stmt)
- return false;
-
- tree callee = gimple_call_fndecl (stmt);
-
- if (!callee)
- return false;
-
- /* Pure/const functions are optimized by normal DCE
- or handled as store above. */
- int flags = gimple_call_flags (stmt);
- if ((flags & (ECF_PURE|ECF_CONST|ECF_NOVOPS))
- && !(flags & (ECF_LOOPING_CONST_OR_PURE)))
- return false;
-
- cgraph_node *node = cgraph_node::get (callee);
- if (!node)
- return false;
-
- if (stmt_could_throw_p (cfun, stmt)
- && !cfun->can_delete_dead_exceptions)
- return false;
-
- /* If return value is used the call is not dead. */
- tree lhs = gimple_call_lhs (stmt);
- if (lhs && TREE_CODE (lhs) == SSA_NAME)
- {
- imm_use_iterator ui;
- gimple *use_stmt;
- FOR_EACH_IMM_USE_STMT (use_stmt, ui, lhs)
- if (!is_gimple_debug (use_stmt))
- return false;
- }
-
- /* Verify that there are no side-effects except for return value
- and memory writes tracked by modref. */
- modref_summary *summary = get_modref_function_summary (node);
- if (!summary || !summary->try_dse)
- return false;
-
- bool by_clobber_p = false;
-
- /* Walk all memory writes and verify that they are dead. */
- for (auto base_node : summary->stores->bases)
- for (auto ref_node : base_node->refs)
- for (auto access_node : ref_node->accesses)
- {
- tree arg = access_node.get_call_arg (stmt);
-
- if (!arg)
- return false;
-
- if (integer_zerop (arg) && flag_delete_null_pointer_checks)
- continue;
-
- ao_ref ref;
-
- if (!access_node.get_ao_ref (stmt, &ref))
- return false;
- ref.ref_alias_set = ref_node->ref;
- ref.base_alias_set = base_node->base;
-
- bool byte_tracking_enabled
- = setup_live_bytes_from_ref (&ref, live_bytes);
- enum dse_store_status store_status;
-
- store_status = dse_classify_store (&ref, stmt,
- byte_tracking_enabled,
- live_bytes, &by_clobber_p);
- if (store_status != DSE_STORE_DEAD)
- return false;
- }
- delete_dead_or_redundant_assignment (gsi, "dead", need_eh_cleanup,
- need_ab_cleanup);
- return true;
-}
-
-/* Attempt to eliminate dead stores in the statement referenced by BSI.
-
- A dead store is a store into a memory location which will later be
- overwritten by another store without any intervening loads. In this
- case the earlier store can be deleted.
-
- In our SSA + virtual operand world we use immediate uses of virtual
- operands to detect dead stores. If a store's virtual definition
- is used precisely once by a later store to the same location which
- post dominates the first store, then the first store is dead. */
-
-static void
-dse_optimize_stmt (function *fun, gimple_stmt_iterator *gsi, sbitmap live_bytes)
-{
- gimple *stmt = gsi_stmt (*gsi);
-
- /* Don't return early on *this_2(D) ={v} {CLOBBER}. */
- if (gimple_has_volatile_ops (stmt)
- && (!gimple_clobber_p (stmt)
- || TREE_CODE (gimple_assign_lhs (stmt)) != MEM_REF))
- return;
-
- ao_ref ref;
- /* If this is not a store we can still remove dead call using
- modref summary. */
- if (!initialize_ao_ref_for_dse (stmt, &ref))
- {
- dse_optimize_call (gsi, live_bytes);
- return;
- }
-
- /* We know we have virtual definitions. We can handle assignments and
- some builtin calls. */
- if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
- {
- tree fndecl = gimple_call_fndecl (stmt);
- switch (DECL_FUNCTION_CODE (fndecl))
- {
- case BUILT_IN_MEMCPY:
- case BUILT_IN_MEMMOVE:
- case BUILT_IN_STRNCPY:
- case BUILT_IN_MEMSET:
- case BUILT_IN_MEMCPY_CHK:
- case BUILT_IN_MEMMOVE_CHK:
- case BUILT_IN_STRNCPY_CHK:
- case BUILT_IN_MEMSET_CHK:
- {
- /* Occasionally calls with an explicit length of zero
- show up in the IL. It's pointless to do analysis
- on them, they're trivially dead. */
- tree size = gimple_call_arg (stmt, 2);
- if (integer_zerop (size))
- {
- delete_dead_or_redundant_call (gsi, "dead");
- return;
- }
-
- /* If this is a memset call that initializes an object
- to zero, it may be redundant with an earlier memset
- or empty CONSTRUCTOR of a larger object. */
- if ((DECL_FUNCTION_CODE (fndecl) == BUILT_IN_MEMSET
- || DECL_FUNCTION_CODE (fndecl) == BUILT_IN_MEMSET_CHK)
- && integer_zerop (gimple_call_arg (stmt, 1)))
- dse_optimize_redundant_stores (stmt);
-
- enum dse_store_status store_status;
- bool byte_tracking_enabled
- = setup_live_bytes_from_ref (&ref, live_bytes);
- store_status = dse_classify_store (&ref, stmt,
- byte_tracking_enabled,
- live_bytes);
- if (store_status == DSE_STORE_LIVE)
- return;
-
- if (store_status == DSE_STORE_MAYBE_PARTIAL_DEAD)
- {
- maybe_trim_memstar_call (&ref, live_bytes, stmt);
- return;
- }
-
- if (store_status == DSE_STORE_DEAD)
- delete_dead_or_redundant_call (gsi, "dead");
- return;
- }
-
- case BUILT_IN_CALLOC:
- /* We already know the arguments are integer constants. */
- dse_optimize_redundant_stores (stmt);
- return;
-
- default:
- return;
- }
- }
-
- bool by_clobber_p = false;
-
- /* Check if this statement stores zero to a memory location,
- and if there is a subsequent store of zero to the same
- memory location. If so, remove the subsequent store. */
- if (gimple_assign_single_p (stmt)
- && initializer_zerop (gimple_assign_rhs1 (stmt)))
- dse_optimize_redundant_stores (stmt);
-
- /* Self-assignments are zombies. */
- if (is_gimple_assign (stmt)
- && operand_equal_p (gimple_assign_rhs1 (stmt),
- gimple_assign_lhs (stmt), 0))
- ;
- else
- {
- bool byte_tracking_enabled
- = setup_live_bytes_from_ref (&ref, live_bytes);
- enum dse_store_status store_status;
- store_status = dse_classify_store (&ref, stmt,
- byte_tracking_enabled,
- live_bytes, &by_clobber_p);
- if (store_status == DSE_STORE_LIVE)
- return;
-
- if (store_status == DSE_STORE_MAYBE_PARTIAL_DEAD)
- {
- maybe_trim_partially_dead_store (&ref, live_bytes, stmt);
- return;
- }
- }
-
- /* Now we know that use_stmt kills the LHS of stmt. */
-
- /* But only remove *this_2(D) ={v} {CLOBBER} if killed by
- another clobber stmt. */
- if (gimple_clobber_p (stmt)
- && !by_clobber_p)
- return;
-
- if (is_gimple_call (stmt)
- && (gimple_has_side_effects (stmt)
- || (stmt_could_throw_p (fun, stmt)
- && !fun->can_delete_dead_exceptions)))
- {
- /* See if we can remove complete call. */
- if (dse_optimize_call (gsi, live_bytes))
- return;
- /* Make sure we do not remove a return slot we cannot reconstruct
- later. */
- if (gimple_call_return_slot_opt_p (as_a <gcall *>(stmt))
- && (TREE_ADDRESSABLE (TREE_TYPE (gimple_call_fntype (stmt)))
- || !poly_int_tree_p
- (TYPE_SIZE (TREE_TYPE (gimple_call_fntype (stmt))))))
- return;
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, " Deleted dead store in call LHS: ");
- print_gimple_stmt (dump_file, stmt, 0, dump_flags);
- fprintf (dump_file, "\n");
- }
- gimple_call_set_lhs (stmt, NULL_TREE);
- update_stmt (stmt);
- }
- else
- delete_dead_or_redundant_assignment (gsi, "dead", need_eh_cleanup,
- need_ab_cleanup);
-}
-
-namespace {
-
-const pass_data pass_data_dse =
-{
- GIMPLE_PASS, /* type */
- "dse", /* name */
- OPTGROUP_NONE, /* optinfo_flags */
- TV_TREE_DSE, /* tv_id */
- ( PROP_cfg | PROP_ssa ), /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0, /* todo_flags_finish */
-};
-
-class pass_dse : public gimple_opt_pass
-{
-public:
- pass_dse (gcc::context *ctxt)
- : gimple_opt_pass (pass_data_dse, ctxt)
- {}
-
- /* opt_pass methods: */
- opt_pass * clone () { return new pass_dse (m_ctxt); }
- virtual bool gate (function *) { return flag_tree_dse != 0; }
- virtual unsigned int execute (function *);
-
-}; // class pass_dse
-
-unsigned int
-pass_dse::execute (function *fun)
-{
- unsigned todo = 0;
- need_eh_cleanup = BITMAP_ALLOC (NULL);
- need_ab_cleanup = BITMAP_ALLOC (NULL);
- auto_sbitmap live_bytes (param_dse_max_object_size);
-
- renumber_gimple_stmt_uids (fun);
-
- calculate_dominance_info (CDI_DOMINATORS);
-
- /* Dead store elimination is fundamentally a reverse program order walk. */
- int *rpo = XNEWVEC (int, n_basic_blocks_for_fn (fun) - NUM_FIXED_BLOCKS);
- int n = pre_and_rev_post_order_compute_fn (fun, NULL, rpo, false);
- for (int i = n; i != 0; --i)
- {
- basic_block bb = BASIC_BLOCK_FOR_FN (fun, rpo[i-1]);
- gimple_stmt_iterator gsi;
-
- for (gsi = gsi_last_bb (bb); !gsi_end_p (gsi);)
- {
- gimple *stmt = gsi_stmt (gsi);
-
- if (gimple_vdef (stmt))
- dse_optimize_stmt (fun, &gsi, live_bytes);
- else if (def_operand_p
- def_p = single_ssa_def_operand (stmt, SSA_OP_DEF))
- {
- /* When we remove dead stores make sure to also delete trivially
- dead SSA defs. */
- if (has_zero_uses (DEF_FROM_PTR (def_p))
- && !gimple_has_side_effects (stmt)
- && !is_ctrl_altering_stmt (stmt)
- && (!stmt_could_throw_p (fun, stmt)
- || fun->can_delete_dead_exceptions))
- {
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, " Deleted trivially dead stmt: ");
- print_gimple_stmt (dump_file, stmt, 0, dump_flags);
- fprintf (dump_file, "\n");
- }
- if (gsi_remove (&gsi, true) && need_eh_cleanup)
- bitmap_set_bit (need_eh_cleanup, bb->index);
- release_defs (stmt);
- }
- }
- if (gsi_end_p (gsi))
- gsi = gsi_last_bb (bb);
- else
- gsi_prev (&gsi);
- }
- bool removed_phi = false;
- for (gphi_iterator si = gsi_start_phis (bb); !gsi_end_p (si);)
- {
- gphi *phi = si.phi ();
- if (has_zero_uses (gimple_phi_result (phi)))
- {
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, " Deleted trivially dead PHI: ");
- print_gimple_stmt (dump_file, phi, 0, dump_flags);
- fprintf (dump_file, "\n");
- }
- remove_phi_node (&si, true);
- removed_phi = true;
- }
- else
- gsi_next (&si);
- }
- if (removed_phi && gimple_seq_empty_p (phi_nodes (bb)))
- todo |= TODO_cleanup_cfg;
- }
- free (rpo);
-
- /* Removal of stores may make some EH edges dead. Purge such edges from
- the CFG as needed. */
- if (!bitmap_empty_p (need_eh_cleanup))
- {
- gimple_purge_all_dead_eh_edges (need_eh_cleanup);
- todo |= TODO_cleanup_cfg;
- }
- if (!bitmap_empty_p (need_ab_cleanup))
- {
- gimple_purge_all_dead_abnormal_call_edges (need_ab_cleanup);
- todo |= TODO_cleanup_cfg;
- }
-
- BITMAP_FREE (need_eh_cleanup);
- BITMAP_FREE (need_ab_cleanup);
-
- return todo;
-}
-
-} // anon namespace
-
-gimple_opt_pass *
-make_pass_dse (gcc::context *ctxt)
-{
- return new pass_dse (ctxt);
-}
generated by cgit v1.1 at 2025-09-04 17:28:49 +0000