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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-uninit.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: Moved to... * config/i386/x86-tune-sched-atom.cc: ...here. * config/i386/x86-tune-sched-bd.c: Moved to... * config/i386/x86-tune-sched-bd.cc: ...here. * config/i386/x86-tune-sched-core.c: Moved to... * config/i386/x86-tune-sched-core.cc: ...here. * config/i386/x86-tune-sched.c: Moved to... * config/i386/x86-tune-sched.cc: ...here. * config/ia64/ia64-c.c: Moved to... * config/ia64/ia64-c.cc: ...here. * config/ia64/ia64.c: Moved to... * config/ia64/ia64.cc: ...here. * config/iq2000/iq2000.c: Moved to... * config/iq2000/iq2000.cc: ...here. * config/linux.c: Moved to... * config/linux.cc: ...here. * config/lm32/lm32.c: Moved to... * config/lm32/lm32.cc: ...here. * config/m32c/m32c-pragma.c: Moved to... * config/m32c/m32c-pragma.cc: ...here. * config/m32c/m32c.c: Moved to... * config/m32c/m32c.cc: ...here. * config/m32r/m32r.c: Moved to... * config/m32r/m32r.cc: ...here. * config/m68k/m68k.c: Moved to... * config/m68k/m68k.cc: ...here. * config/mcore/mcore.c: Moved to... * config/mcore/mcore.cc: ...here. * config/microblaze/microblaze-c.c: Moved to... * config/microblaze/microblaze-c.cc: ...here. * config/microblaze/microblaze.c: Moved to... * config/microblaze/microblaze.cc: ...here. * config/mips/driver-native.c: Moved to... * config/mips/driver-native.cc: ...here. * config/mips/frame-header-opt.c: Moved to... * config/mips/frame-header-opt.cc: ...here. * config/mips/mips-d.c: Moved to... * config/mips/mips-d.cc: ...here. * config/mips/mips.c: Moved to... * config/mips/mips.cc: ...here. * config/mmix/mmix.c: Moved to... * config/mmix/mmix.cc: ...here. * config/mn10300/mn10300.c: Moved to... * config/mn10300/mn10300.cc: ...here. * config/moxie/moxie.c: Moved to... * config/moxie/moxie.cc: ...here. * config/msp430/driver-msp430.c: Moved to... * config/msp430/driver-msp430.cc: ...here. * config/msp430/msp430-c.c: Moved to... * config/msp430/msp430-c.cc: ...here. * config/msp430/msp430-devices.c: Moved to... * config/msp430/msp430-devices.cc: ...here. * config/msp430/msp430.c: Moved to... * config/msp430/msp430.cc: ...here. * config/nds32/nds32-cost.c: Moved to... * config/nds32/nds32-cost.cc: ...here. * config/nds32/nds32-fp-as-gp.c: Moved to... * config/nds32/nds32-fp-as-gp.cc: ...here. * config/nds32/nds32-intrinsic.c: Moved to... * config/nds32/nds32-intrinsic.cc: ...here. * config/nds32/nds32-isr.c: Moved to... * config/nds32/nds32-isr.cc: ...here. * config/nds32/nds32-md-auxiliary.c: Moved to... * config/nds32/nds32-md-auxiliary.cc: ...here. * config/nds32/nds32-memory-manipulation.c: Moved to... * config/nds32/nds32-memory-manipulation.cc: ...here. * config/nds32/nds32-pipelines-auxiliary.c: Moved to... * config/nds32/nds32-pipelines-auxiliary.cc: ...here. * config/nds32/nds32-predicates.c: Moved to... * config/nds32/nds32-predicates.cc: ...here. * config/nds32/nds32-relax-opt.c: Moved to... * config/nds32/nds32-relax-opt.cc: ...here. * config/nds32/nds32-utils.c: Moved to... * config/nds32/nds32-utils.cc: ...here. * config/nds32/nds32.c: Moved to... * config/nds32/nds32.cc: ...here. * config/netbsd-d.c: Moved to... * config/netbsd-d.cc: ...here. * config/netbsd.c: Moved to... * config/netbsd.cc: ...here. * config/nios2/nios2.c: Moved to... * config/nios2/nios2.cc: ...here. * config/nvptx/mkoffload.c: Moved to... * config/nvptx/mkoffload.cc: ...here. * config/nvptx/nvptx-c.c: Moved to... * config/nvptx/nvptx-c.cc: ...here. * config/nvptx/nvptx.c: Moved to... * config/nvptx/nvptx.cc: ...here. * config/openbsd-d.c: Moved to... * config/openbsd-d.cc: ...here. * config/or1k/or1k.c: Moved to... * config/or1k/or1k.cc: ...here. * config/pa/pa-d.c: Moved to... * config/pa/pa-d.cc: ...here. * config/pa/pa.c: Moved to... * config/pa/pa.cc: ...here. * config/pdp11/pdp11.c: Moved to... * config/pdp11/pdp11.cc: ...here. * config/pru/pru-passes.c: Moved to... * config/pru/pru-passes.cc: ...here. * config/pru/pru-pragma.c: Moved to... * config/pru/pru-pragma.cc: ...here. * config/pru/pru.c: Moved to... * config/pru/pru.cc: ...here. * config/riscv/riscv-builtins.c: Moved to... * config/riscv/riscv-builtins.cc: ...here. * config/riscv/riscv-c.c: Moved to... * config/riscv/riscv-c.cc: ...here. * config/riscv/riscv-d.c: Moved to... * config/riscv/riscv-d.cc: ...here. * config/riscv/riscv-shorten-memrefs.c: Moved to... * config/riscv/riscv-shorten-memrefs.cc: ...here. * config/riscv/riscv-sr.c: Moved to... * config/riscv/riscv-sr.cc: ...here. * config/riscv/riscv.c: Moved to... * config/riscv/riscv.cc: ...here. * config/rl78/rl78-c.c: Moved to... * config/rl78/rl78-c.cc: ...here. * config/rl78/rl78.c: Moved to... * config/rl78/rl78.cc: ...here. * config/rs6000/driver-rs6000.c: Moved to... * config/rs6000/driver-rs6000.cc: ...here. * config/rs6000/host-darwin.c: Moved to... * config/rs6000/host-darwin.cc: ...here. * config/rs6000/host-ppc64-darwin.c: Moved to... * config/rs6000/host-ppc64-darwin.cc: ...here. * config/rs6000/rbtree.c: Moved to... * config/rs6000/rbtree.cc: ...here. * config/rs6000/rs6000-c.c: Moved to... * config/rs6000/rs6000-c.cc: ...here. * config/rs6000/rs6000-call.c: Moved to... * config/rs6000/rs6000-call.cc: ...here. * config/rs6000/rs6000-d.c: Moved to... * config/rs6000/rs6000-d.cc: ...here. * config/rs6000/rs6000-gen-builtins.c: Moved to... * config/rs6000/rs6000-gen-builtins.cc: ...here. * config/rs6000/rs6000-linux.c: Moved to... * config/rs6000/rs6000-linux.cc: ...here. * config/rs6000/rs6000-logue.c: Moved to... * config/rs6000/rs6000-logue.cc: ...here. * config/rs6000/rs6000-p8swap.c: Moved to... * config/rs6000/rs6000-p8swap.cc: ...here. * config/rs6000/rs6000-pcrel-opt.c: Moved to... * config/rs6000/rs6000-pcrel-opt.cc: ...here. * config/rs6000/rs6000-string.c: Moved to... * config/rs6000/rs6000-string.cc: ...here. * config/rs6000/rs6000.c: Moved to... * config/rs6000/rs6000.cc: ...here. * config/rx/rx.c: Moved to... * config/rx/rx.cc: ...here. * config/s390/driver-native.c: Moved to... * config/s390/driver-native.cc: ...here. * config/s390/s390-c.c: Moved to... * config/s390/s390-c.cc: ...here. * config/s390/s390-d.c: Moved to... * config/s390/s390-d.cc: ...here. * config/s390/s390.c: Moved to... * config/s390/s390.cc: ...here. * config/sh/divtab-sh4-300.c: Moved to... * config/sh/divtab-sh4-300.cc: ...here. * config/sh/divtab-sh4.c: Moved to... * config/sh/divtab-sh4.cc: ...here. * config/sh/divtab.c: Moved to... * config/sh/divtab.cc: ...here. * config/sh/sh-c.c: Moved to... * config/sh/sh-c.cc: ...here. * config/sh/sh.c: Moved to... * config/sh/sh.cc: ...here. * config/sol2-c.c: Moved to... * config/sol2-c.cc: ...here. * config/sol2-cxx.c: Moved to... * config/sol2-cxx.cc: ...here. * config/sol2-d.c: Moved to... * config/sol2-d.cc: ...here. * config/sol2-stubs.c: Moved to... * config/sol2-stubs.cc: ...here. * config/sol2.c: Moved to... * config/sol2.cc: ...here. * config/sparc/driver-sparc.c: Moved to... * config/sparc/driver-sparc.cc: ...here. * config/sparc/sparc-c.c: Moved to... * config/sparc/sparc-c.cc: ...here. * config/sparc/sparc-d.c: Moved to... * config/sparc/sparc-d.cc: ...here. * config/sparc/sparc.c: Moved to... * config/sparc/sparc.cc: ...here. * config/stormy16/stormy16.c: Moved to... * config/stormy16/stormy16.cc: ...here. * config/tilegx/mul-tables.c: Moved to... * config/tilegx/mul-tables.cc: ...here. * config/tilegx/tilegx-c.c: Moved to... * config/tilegx/tilegx-c.cc: ...here. * config/tilegx/tilegx.c: Moved to... * config/tilegx/tilegx.cc: ...here. * config/tilepro/mul-tables.c: Moved to... * config/tilepro/mul-tables.cc: ...here. * config/tilepro/tilepro-c.c: Moved to... * config/tilepro/tilepro-c.cc: ...here. * config/tilepro/tilepro.c: Moved to... * config/tilepro/tilepro.cc: ...here. * config/v850/v850-c.c: Moved to... * config/v850/v850-c.cc: ...here. * config/v850/v850.c: Moved to... * config/v850/v850.cc: ...here. * config/vax/vax.c: Moved to... * config/vax/vax.cc: ...here. * config/visium/visium.c: Moved to... * config/visium/visium.cc: ...here. * config/vms/vms-c.c: Moved to... * config/vms/vms-c.cc: ...here. * config/vms/vms-f.c: Moved to... * config/vms/vms-f.cc: ...here. * config/vms/vms.c: Moved to... * config/vms/vms.cc: ...here. * config/vxworks-c.c: Moved to... * config/vxworks-c.cc: ...here. * config/vxworks.c: Moved to... * config/vxworks.cc: ...here. * config/winnt-c.c: Moved to... * config/winnt-c.cc: ...here. * config/xtensa/xtensa.c: Moved to... * config/xtensa/xtensa.cc: ...here. * context.c: Moved to... * context.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * coverage.c: Moved to... * coverage.cc: ...here. * cppbuiltin.c: Moved to... * cppbuiltin.cc: ...here. * cppdefault.c: Moved to... * cppdefault.cc: ...here. * cprop.c: Moved to... * cprop.cc: ...here. * cse.c: Moved to... * cse.cc: ...here. * cselib.c: Moved to... * cselib.cc: ...here. * ctfc.c: Moved to... * ctfc.cc: ...here. * ctfout.c: Moved to... * ctfout.cc: ...here. * data-streamer-in.c: Moved to... * data-streamer-in.cc: ...here. * data-streamer-out.c: Moved to... * data-streamer-out.cc: ...here. * data-streamer.c: Moved to... * data-streamer.cc: ...here. * dbgcnt.c: Moved to... * dbgcnt.cc: ...here. * dbxout.c: Moved to... * dbxout.cc: ...here. * dce.c: Moved to... * dce.cc: ...here. * ddg.c: Moved to... * ddg.cc: ...here. * debug.c: Moved to... * debug.cc: ...here. * df-core.c: Moved to... * df-core.cc: ...here. * df-problems.c: Moved to... * df-problems.cc: ...here. * df-scan.c: Moved to... * df-scan.cc: ...here. * dfp.c: Moved to... * dfp.cc: ...here. * diagnostic-color.c: Moved to... * diagnostic-color.cc: ...here. * diagnostic-show-locus.c: Moved to... * diagnostic-show-locus.cc: ...here. * diagnostic-spec.c: Moved to... * diagnostic-spec.cc: ...here. * diagnostic.c: Moved to... * diagnostic.cc: ...here. * dojump.c: Moved to... * dojump.cc: ...here. * dominance.c: Moved to... * dominance.cc: ...here. * domwalk.c: Moved to... * domwalk.cc: ...here. * double-int.c: Moved to... * double-int.cc: ...here. * dse.c: Moved to... * dse.cc: ...here. * dumpfile.c: Moved to... * dumpfile.cc: ...here. * dwarf2asm.c: Moved to... * dwarf2asm.cc: ...here. * dwarf2cfi.c: Moved to... * dwarf2cfi.cc: ...here. * dwarf2ctf.c: Moved to... * dwarf2ctf.cc: ...here. * dwarf2out.c: Moved to... * dwarf2out.cc: ...here. * early-remat.c: Moved to... * early-remat.cc: ...here. * edit-context.c: Moved to... * edit-context.cc: ...here. * emit-rtl.c: Moved to... * emit-rtl.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * et-forest.c: Moved to... * et-forest.cc: ...here. * except.c: Moved to... * except.cc: ...here. * explow.c: Moved to... * explow.cc: ...here. * expmed.c: Moved to... * expmed.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * fibonacci_heap.c: Moved to... * fibonacci_heap.cc: ...here. * file-find.c: Moved to... * file-find.cc: ...here. * file-prefix-map.c: Moved to... * file-prefix-map.cc: ...here. * final.c: Moved to... * final.cc: ...here. * fixed-value.c: Moved to... * fixed-value.cc: ...here. * fold-const-call.c: Moved to... * fold-const-call.cc: ...here. * fold-const.c: Moved to... * fold-const.cc: ...here. * fp-test.c: Moved to... * fp-test.cc: ...here. * function-tests.c: Moved to... * function-tests.cc: ...here. * function.c: Moved to... * function.cc: ...here. * fwprop.c: Moved to... * fwprop.cc: ...here. * gcc-ar.c: Moved to... * gcc-ar.cc: ...here. * gcc-main.c: Moved to... * gcc-main.cc: ...here. * gcc-rich-location.c: Moved to... * gcc-rich-location.cc: ...here. * gcc.c: Moved to... * gcc.cc: ...here. * gcov-dump.c: Moved to... * gcov-dump.cc: ...here. * gcov-io.c: Moved to... * gcov-io.cc: ...here. * gcov-tool.c: Moved to... * gcov-tool.cc: ...here. * gcov.c: Moved to... * gcov.cc: ...here. * gcse-common.c: Moved to... * gcse-common.cc: ...here. * gcse.c: Moved to... * gcse.cc: ...here. * genattr-common.c: Moved to... * genattr-common.cc: ...here. * genattr.c: Moved to... * genattr.cc: ...here. * genattrtab.c: Moved to... * genattrtab.cc: ...here. * genautomata.c: Moved to... * genautomata.cc: ...here. * gencfn-macros.c: Moved to... * gencfn-macros.cc: ...here. * gencheck.c: Moved to... * gencheck.cc: ...here. * genchecksum.c: Moved to... * genchecksum.cc: ...here. * gencodes.c: Moved to... * gencodes.cc: ...here. * genconditions.c: Moved to... * genconditions.cc: ...here. * genconfig.c: Moved to... * genconfig.cc: ...here. * genconstants.c: Moved to... * genconstants.cc: ...here. * genemit.c: Moved to... * genemit.cc: ...here. * genenums.c: Moved to... * genenums.cc: ...here. * generic-match-head.c: Moved to... * generic-match-head.cc: ...here. * genextract.c: Moved to... * genextract.cc: ...here. * genflags.c: Moved to... * genflags.cc: ...here. * gengenrtl.c: Moved to... * gengenrtl.cc: ...here. * gengtype-parse.c: Moved to... * gengtype-parse.cc: ...here. * gengtype-state.c: Moved to... * gengtype-state.cc: ...here. * gengtype.c: Moved to... * gengtype.cc: ...here. * genhooks.c: Moved to... * genhooks.cc: ...here. * genmatch.c: Moved to... * genmatch.cc: ...here. * genmddeps.c: Moved to... * genmddeps.cc: ...here. * genmddump.c: Moved to... * genmddump.cc: ...here. * genmodes.c: Moved to... * genmodes.cc: ...here. * genopinit.c: Moved to... * genopinit.cc: ...here. * genoutput.c: Moved to... * genoutput.cc: ...here. * genpeep.c: Moved to... * genpeep.cc: ...here. * genpreds.c: Moved to... * genpreds.cc: ...here. * genrecog.c: Moved to... * genrecog.cc: ...here. * gensupport.c: Moved to... * gensupport.cc: ...here. * gentarget-def.c: Moved to... * gentarget-def.cc: ...here. * genversion.c: Moved to... * genversion.cc: ...here. * ggc-common.c: Moved to... * ggc-common.cc: ...here. * ggc-none.c: Moved to... * ggc-none.cc: ...here. * ggc-page.c: Moved to... * ggc-page.cc: ...here. * ggc-tests.c: Moved to... * ggc-tests.cc: ...here. * gimple-builder.c: Moved to... * gimple-builder.cc: ...here. * gimple-expr.c: Moved to... * gimple-expr.cc: ...here. * gimple-fold.c: Moved to... * gimple-fold.cc: ...here. * gimple-iterator.c: Moved to... * gimple-iterator.cc: ...here. * gimple-laddress.c: Moved to... * gimple-laddress.cc: ...here. * gimple-loop-jam.c: Moved to... * gimple-loop-jam.cc: ...here. * gimple-low.c: Moved to... * gimple-low.cc: ...here. * gimple-match-head.c: Moved to... * gimple-match-head.cc: ...here. * gimple-pretty-print.c: Moved to... * gimple-pretty-print.cc: ...here. * gimple-ssa-backprop.c: Moved to... * gimple-ssa-backprop.cc: ...here. * gimple-ssa-evrp-analyze.c: Moved to... * gimple-ssa-evrp-analyze.cc: ...here. * gimple-ssa-evrp.c: Moved to... * gimple-ssa-evrp.cc: ...here. * gimple-ssa-isolate-paths.c: Moved to... * gimple-ssa-isolate-paths.cc: ...here. * gimple-ssa-nonnull-compare.c: Moved to... * gimple-ssa-nonnull-compare.cc: ...here. * gimple-ssa-split-paths.c: Moved to... * gimple-ssa-split-paths.cc: ...here. * gimple-ssa-sprintf.c: Moved to... * gimple-ssa-sprintf.cc: ...here. * gimple-ssa-store-merging.c: Moved to... * gimple-ssa-store-merging.cc: ...here. * gimple-ssa-strength-reduction.c: Moved to... * gimple-ssa-strength-reduction.cc: ...here. * gimple-ssa-warn-alloca.c: Moved to... * gimple-ssa-warn-alloca.cc: ...here. * gimple-ssa-warn-restrict.c: Moved to... * gimple-ssa-warn-restrict.cc: ...here. * gimple-streamer-in.c: Moved to... * gimple-streamer-in.cc: ...here. * gimple-streamer-out.c: Moved to... * gimple-streamer-out.cc: ...here. * gimple-walk.c: Moved to... * gimple-walk.cc: ...here. * gimple-warn-recursion.c: Moved to... * gimple-warn-recursion.cc: ...here. * gimple.c: Moved to... * gimple.cc: ...here. * gimplify-me.c: Moved to... * gimplify-me.cc: ...here. * gimplify.c: Moved to... * gimplify.cc: ...here. * godump.c: Moved to... * godump.cc: ...here. * graph.c: Moved to... * graph.cc: ...here. * graphds.c: Moved to... * graphds.cc: ...here. * graphite-dependences.c: Moved to... * graphite-dependences.cc: ...here. * graphite-isl-ast-to-gimple.c: Moved to... * graphite-isl-ast-to-gimple.cc: ...here. * graphite-optimize-isl.c: Moved to... * graphite-optimize-isl.cc: ...here. * graphite-poly.c: Moved to... * graphite-poly.cc: ...here. * graphite-scop-detection.c: Moved to... * graphite-scop-detection.cc: ...here. * graphite-sese-to-poly.c: Moved to... * graphite-sese-to-poly.cc: ...here. * graphite.c: Moved to... * graphite.cc: ...here. * haifa-sched.c: Moved to... * haifa-sched.cc: ...here. * hash-map-tests.c: Moved to... * hash-map-tests.cc: ...here. * hash-set-tests.c: Moved to... * hash-set-tests.cc: ...here. * hash-table.c: Moved to... * hash-table.cc: ...here. * hooks.c: Moved to... * hooks.cc: ...here. * host-default.c: Moved to... * host-default.cc: ...here. * hw-doloop.c: Moved to... * hw-doloop.cc: ...here. * hwint.c: Moved to... * hwint.cc: ...here. * ifcvt.c: Moved to... * ifcvt.cc: ...here. * inchash.c: Moved to... * inchash.cc: ...here. * incpath.c: Moved to... * incpath.cc: ...here. * init-regs.c: Moved to... * init-regs.cc: ...here. * input.c: Moved to... * input.cc: ...here. * internal-fn.c: Moved to... * internal-fn.cc: ...here. * intl.c: Moved to... * intl.cc: ...here. * ipa-comdats.c: Moved to... * ipa-comdats.cc: ...here. * ipa-cp.c: Moved to... * ipa-cp.cc: ...here. * ipa-devirt.c: Moved to... * ipa-devirt.cc: ...here. * ipa-fnsummary.c: Moved to... * ipa-fnsummary.cc: ...here. * ipa-icf-gimple.c: Moved to... * ipa-icf-gimple.cc: ...here. * ipa-icf.c: Moved to... * ipa-icf.cc: ...here. * ipa-inline-analysis.c: Moved to... * ipa-inline-analysis.cc: ...here. * ipa-inline-transform.c: Moved to... * ipa-inline-transform.cc: ...here. * ipa-inline.c: Moved to... * ipa-inline.cc: ...here. * ipa-modref-tree.c: Moved to... * ipa-modref-tree.cc: ...here. * ipa-modref.c: Moved to... * ipa-modref.cc: ...here. * ipa-param-manipulation.c: Moved to... * ipa-param-manipulation.cc: ...here. * ipa-polymorphic-call.c: Moved to... * ipa-polymorphic-call.cc: ...here. * ipa-predicate.c: Moved to... * ipa-predicate.cc: ...here. * ipa-profile.c: Moved to... * ipa-profile.cc: ...here. * ipa-prop.c: Moved to... * ipa-prop.cc: ...here. * ipa-pure-const.c: Moved to... * ipa-pure-const.cc: ...here. * ipa-ref.c: Moved to... * ipa-ref.cc: ...here. * ipa-reference.c: Moved to... * ipa-reference.cc: ...here. * ipa-split.c: Moved to... * ipa-split.cc: ...here. * ipa-sra.c: Moved to... * ipa-sra.cc: ...here. * ipa-utils.c: Moved to... * ipa-utils.cc: ...here. * ipa-visibility.c: Moved to... * ipa-visibility.cc: ...here. * ipa.c: Moved to... * ipa.cc: ...here. * ira-build.c: Moved to... * ira-build.cc: ...here. * ira-color.c: Moved to... * ira-color.cc: ...here. * ira-conflicts.c: Moved to... * ira-conflicts.cc: ...here. * ira-costs.c: Moved to... * ira-costs.cc: ...here. * ira-emit.c: Moved to... * ira-emit.cc: ...here. * ira-lives.c: Moved to... * ira-lives.cc: ...here. * ira.c: Moved to... * ira.cc: ...here. * jump.c: Moved to... * jump.cc: ...here. * langhooks.c: Moved to... * langhooks.cc: ...here. * lcm.c: Moved to... * lcm.cc: ...here. * lists.c: Moved to... * lists.cc: ...here. * loop-doloop.c: Moved to... * loop-doloop.cc: ...here. * loop-init.c: Moved to... * loop-init.cc: ...here. * loop-invariant.c: Moved to... * loop-invariant.cc: ...here. * loop-iv.c: Moved to... * loop-iv.cc: ...here. * loop-unroll.c: Moved to... * loop-unroll.cc: ...here. * lower-subreg.c: Moved to... * lower-subreg.cc: ...here. * lra-assigns.c: Moved to... * lra-assigns.cc: ...here. * lra-coalesce.c: Moved to... * lra-coalesce.cc: ...here. * lra-constraints.c: Moved to... * lra-constraints.cc: ...here. * lra-eliminations.c: Moved to... * lra-eliminations.cc: ...here. * lra-lives.c: Moved to... * lra-lives.cc: ...here. * lra-remat.c: Moved to... * lra-remat.cc: ...here. * lra-spills.c: Moved to... * lra-spills.cc: ...here. * lra.c: Moved to... * lra.cc: ...here. * lto-cgraph.c: Moved to... * lto-cgraph.cc: ...here. * lto-compress.c: Moved to... * lto-compress.cc: ...here. * lto-opts.c: Moved to... * lto-opts.cc: ...here. * lto-section-in.c: Moved to... * lto-section-in.cc: ...here. * lto-section-out.c: Moved to... * lto-section-out.cc: ...here. * lto-streamer-in.c: Moved to... * lto-streamer-in.cc: ...here. * lto-streamer-out.c: Moved to... * lto-streamer-out.cc: ...here. * lto-streamer.c: Moved to... * lto-streamer.cc: ...here. * lto-wrapper.c: Moved to... * lto-wrapper.cc: ...here. * main.c: Moved to... * main.cc: ...here. * mcf.c: Moved to... * mcf.cc: ...here. * mode-switching.c: Moved to... * mode-switching.cc: ...here. * modulo-sched.c: Moved to... * modulo-sched.cc: ...here. * multiple_target.c: Moved to... * multiple_target.cc: ...here. * omp-expand.c: Moved to... * omp-expand.cc: ...here. * omp-general.c: Moved to... * omp-general.cc: ...here. * omp-low.c: Moved to... * omp-low.cc: ...here. * omp-offload.c: Moved to... * omp-offload.cc: ...here. * omp-simd-clone.c: Moved to... * omp-simd-clone.cc: ...here. * opt-suggestions.c: Moved to... * opt-suggestions.cc: ...here. * optabs-libfuncs.c: Moved to... * optabs-libfuncs.cc: ...here. * optabs-query.c: Moved to... * optabs-query.cc: ...here. * optabs-tree.c: Moved to... * optabs-tree.cc: ...here. * optabs.c: Moved to... * optabs.cc: ...here. * opts-common.c: Moved to... * opts-common.cc: ...here. * opts-global.c: Moved to... * opts-global.cc: ...here. * opts.c: Moved to... * opts.cc: ...here. * passes.c: Moved to... * passes.cc: ...here. * plugin.c: Moved to... * plugin.cc: ...here. * postreload-gcse.c: Moved to... * postreload-gcse.cc: ...here. * postreload.c: Moved to... * postreload.cc: ...here. * predict.c: Moved to... * predict.cc: ...here. * prefix.c: Moved to... * prefix.cc: ...here. * pretty-print.c: Moved to... * pretty-print.cc: ...here. * print-rtl-function.c: Moved to... * print-rtl-function.cc: ...here. * print-rtl.c: Moved to... * print-rtl.cc: ...here. * print-tree.c: Moved to... * print-tree.cc: ...here. * profile-count.c: Moved to... * profile-count.cc: ...here. * profile.c: Moved to... * profile.cc: ...here. * read-md.c: Moved to... * read-md.cc: ...here. * read-rtl-function.c: Moved to... * read-rtl-function.cc: ...here. * read-rtl.c: Moved to... * read-rtl.cc: ...here. * real.c: Moved to... * real.cc: ...here. * realmpfr.c: Moved to... * realmpfr.cc: ...here. * recog.c: Moved to... * recog.cc: ...here. * ree.c: Moved to... * ree.cc: ...here. * reg-stack.c: Moved to... * reg-stack.cc: ...here. * regcprop.c: Moved to... * regcprop.cc: ...here. * reginfo.c: Moved to... * reginfo.cc: ...here. * regrename.c: Moved to... * regrename.cc: ...here. * regstat.c: Moved to... * regstat.cc: ...here. * reload.c: Moved to... * reload.cc: ...here. * reload1.c: Moved to... * reload1.cc: ...here. * reorg.c: Moved to... * reorg.cc: ...here. * resource.c: Moved to... * resource.cc: ...here. * rtl-error.c: Moved to... * rtl-error.cc: ...here. * rtl-tests.c: Moved to... * rtl-tests.cc: ...here. * rtl.c: Moved to... * rtl.cc: ...here. * rtlanal.c: Moved to... * rtlanal.cc: ...here. * rtlhash.c: Moved to... * rtlhash.cc: ...here. * rtlhooks.c: Moved to... * rtlhooks.cc: ...here. * rtx-vector-builder.c: Moved to... * rtx-vector-builder.cc: ...here. * run-rtl-passes.c: Moved to... * run-rtl-passes.cc: ...here. * sancov.c: Moved to... * sancov.cc: ...here. * sanopt.c: Moved to... * sanopt.cc: ...here. * sbitmap.c: Moved to... * sbitmap.cc: ...here. * sched-deps.c: Moved to... * sched-deps.cc: ...here. * sched-ebb.c: Moved to... * sched-ebb.cc: ...here. * sched-rgn.c: Moved to... * sched-rgn.cc: ...here. * sel-sched-dump.c: Moved to... * sel-sched-dump.cc: ...here. * sel-sched-ir.c: Moved to... * sel-sched-ir.cc: ...here. * sel-sched.c: Moved to... * sel-sched.cc: ...here. * selftest-diagnostic.c: Moved to... * selftest-diagnostic.cc: ...here. * selftest-rtl.c: Moved to... * selftest-rtl.cc: ...here. * selftest-run-tests.c: Moved to... * selftest-run-tests.cc: ...here. * selftest.c: Moved to... * selftest.cc: ...here. * sese.c: Moved to... * sese.cc: ...here. * shrink-wrap.c: Moved to... * shrink-wrap.cc: ...here. * simplify-rtx.c: Moved to... * simplify-rtx.cc: ...here. * sparseset.c: Moved to... * sparseset.cc: ...here. * spellcheck-tree.c: Moved to... * spellcheck-tree.cc: ...here. * spellcheck.c: Moved to... * spellcheck.cc: ...here. * sreal.c: Moved to... * sreal.cc: ...here. * stack-ptr-mod.c: Moved to... * stack-ptr-mod.cc: ...here. * statistics.c: Moved to... * statistics.cc: ...here. * stmt.c: Moved to... * stmt.cc: ...here. * stor-layout.c: Moved to... * stor-layout.cc: ...here. * store-motion.c: Moved to... * store-motion.cc: ...here. * streamer-hooks.c: Moved to... * streamer-hooks.cc: ...here. * stringpool.c: Moved to... * stringpool.cc: ...here. * substring-locations.c: Moved to... * substring-locations.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * target-globals.c: Moved to... * target-globals.cc: ...here. * targhooks.c: Moved to... * targhooks.cc: ...here. * timevar.c: Moved to... * timevar.cc: ...here. * toplev.c: Moved to... * toplev.cc: ...here. * tracer.c: Moved to... * tracer.cc: ...here. * trans-mem.c: Moved to... * trans-mem.cc: ...here. * tree-affine.c: Moved to... * tree-affine.cc: ...here. * tree-call-cdce.c: Moved to... * tree-call-cdce.cc: ...here. * tree-cfg.c: Moved to... * tree-cfg.cc: ...here. * tree-cfgcleanup.c: Moved to... * tree-cfgcleanup.cc: ...here. * tree-chrec.c: Moved to... * tree-chrec.cc: ...here. * tree-complex.c: Moved to... * tree-complex.cc: ...here. * tree-data-ref.c: Moved to... * tree-data-ref.cc: ...here. * tree-dfa.c: Moved to... * tree-dfa.cc: ...here. * tree-diagnostic.c: Moved to... * tree-diagnostic.cc: ...here. * tree-dump.c: Moved to... * tree-dump.cc: ...here. * tree-eh.c: Moved to... * tree-eh.cc: ...here. * tree-emutls.c: Moved to... * tree-emutls.cc: ...here. * tree-if-conv.c: Moved to... * tree-if-conv.cc: ...here. * tree-inline.c: Moved to... * tree-inline.cc: ...here. * tree-into-ssa.c: Moved to... * tree-into-ssa.cc: ...here. * tree-iterator.c: Moved to... * tree-iterator.cc: ...here. * tree-loop-distribution.c: Moved to... * tree-loop-distribution.cc: ...here. * tree-nested.c: Moved to... * tree-nested.cc: ...here. * tree-nrv.c: Moved to... * tree-nrv.cc: ...here. * tree-object-size.c: Moved to... * tree-object-size.cc: ...here. * tree-outof-ssa.c: Moved to... * tree-outof-ssa.cc: ...here. * tree-parloops.c: Moved to... * tree-parloops.cc: ...here. * tree-phinodes.c: Moved to... * tree-phinodes.cc: ...here. * tree-predcom.c: Moved to... * tree-predcom.cc: ...here. * tree-pretty-print.c: Moved to... * tree-pretty-print.cc: ...here. * tree-profile.c: Moved to... * tree-profile.cc: ...here. * tree-scalar-evolution.c: Moved to... * tree-scalar-evolution.cc: ...here. * tree-sra.c: Moved to... * tree-sra.cc: ...here. * tree-ssa-address.c: Moved to... * tree-ssa-address.cc: ...here. * tree-ssa-alias.c: Moved to... * tree-ssa-alias.cc: ...here. * tree-ssa-ccp.c: Moved to... * tree-ssa-ccp.cc: ...here. * tree-ssa-coalesce.c: Moved to... * tree-ssa-coalesce.cc: ...here. * tree-ssa-copy.c: Moved to... * tree-ssa-copy.cc: ...here. * tree-ssa-dce.c: Moved to... * tree-ssa-dce.cc: ...here. * tree-ssa-dom.c: Moved to... * tree-ssa-dom.cc: ...here. * tree-ssa-dse.c: Moved to... * tree-ssa-dse.cc: ...here. * tree-ssa-forwprop.c: Moved to... * tree-ssa-forwprop.cc: ...here. * tree-ssa-ifcombine.c: Moved to... * tree-ssa-ifcombine.cc: ...here. * tree-ssa-live.c: Moved to... * tree-ssa-live.cc: ...here. * tree-ssa-loop-ch.c: Moved to... * tree-ssa-loop-ch.cc: ...here. * tree-ssa-loop-im.c: Moved to... * tree-ssa-loop-im.cc: ...here. * tree-ssa-loop-ivcanon.c: Moved to... * tree-ssa-loop-ivcanon.cc: ...here. * tree-ssa-loop-ivopts.c: Moved to... * tree-ssa-loop-ivopts.cc: ...here. * tree-ssa-loop-manip.c: Moved to... * tree-ssa-loop-manip.cc: ...here. * tree-ssa-loop-niter.c: Moved to... * tree-ssa-loop-niter.cc: ...here. * tree-ssa-loop-prefetch.c: Moved to... * tree-ssa-loop-prefetch.cc: ...here. * tree-ssa-loop-split.c: Moved to... * tree-ssa-loop-split.cc: ...here. * tree-ssa-loop-unswitch.c: Moved to... * tree-ssa-loop-unswitch.cc: ...here. * tree-ssa-loop.c: Moved to... * tree-ssa-loop.cc: ...here. * tree-ssa-math-opts.c: Moved to... * tree-ssa-math-opts.cc: ...here. * tree-ssa-operands.c: Moved to... * tree-ssa-operands.cc: ...here. * tree-ssa-phiopt.c: Moved to... * tree-ssa-phiopt.cc: ...here. * tree-ssa-phiprop.c: Moved to... * tree-ssa-phiprop.cc: ...here. * tree-ssa-pre.c: Moved to... * tree-ssa-pre.cc: ...here. * tree-ssa-propagate.c: Moved to... * tree-ssa-propagate.cc: ...here. * tree-ssa-reassoc.c: Moved to... * tree-ssa-reassoc.cc: ...here. * tree-ssa-sccvn.c: Moved to... * tree-ssa-sccvn.cc: ...here. * tree-ssa-scopedtables.c: Moved to... * tree-ssa-scopedtables.cc: ...here. * tree-ssa-sink.c: Moved to... * tree-ssa-sink.cc: ...here. * tree-ssa-strlen.c: Moved to... * tree-ssa-strlen.cc: ...here. * tree-ssa-structalias.c: Moved to... * tree-ssa-structalias.cc: ...here. * tree-ssa-tail-merge.c: Moved to... * tree-ssa-tail-merge.cc: ...here. * tree-ssa-ter.c: Moved to... * tree-ssa-ter.cc: ...here. * tree-ssa-threadbackward.c: Moved to... * tree-ssa-threadbackward.cc: ...here. * tree-ssa-threadedge.c: Moved to... * tree-ssa-threadedge.cc: ...here. * tree-ssa-threadupdate.c: Moved to... * tree-ssa-threadupdate.cc: ...here. * tree-ssa-uncprop.c: Moved to... * tree-ssa-uncprop.cc: ...here. * tree-ssa-uninit.c: Moved to... * tree-ssa-uninit.cc: ...here. * tree-ssa.c: Moved to... * tree-ssa.cc: ...here. * tree-ssanames.c: Moved to... * tree-ssanames.cc: ...here. * tree-stdarg.c: Moved to... * tree-stdarg.cc: ...here. * tree-streamer-in.c: Moved to... * tree-streamer-in.cc: ...here. * tree-streamer-out.c: Moved to... * tree-streamer-out.cc: ...here. * tree-streamer.c: Moved to... * tree-streamer.cc: ...here. * tree-switch-conversion.c: Moved to... * tree-switch-conversion.cc: ...here. * tree-tailcall.c: Moved to... * tree-tailcall.cc: ...here. * tree-vect-data-refs.c: Moved to... * tree-vect-data-refs.cc: ...here. * tree-vect-generic.c: Moved to... * tree-vect-generic.cc: ...here. * tree-vect-loop-manip.c: Moved to... * tree-vect-loop-manip.cc: ...here. * tree-vect-loop.c: Moved to... * tree-vect-loop.cc: ...here. * tree-vect-patterns.c: Moved to... * tree-vect-patterns.cc: ...here. * tree-vect-slp-patterns.c: Moved to... * tree-vect-slp-patterns.cc: ...here. * tree-vect-slp.c: Moved to... * tree-vect-slp.cc: ...here. * tree-vect-stmts.c: Moved to... * tree-vect-stmts.cc: ...here. * tree-vector-builder.c: Moved to... * tree-vector-builder.cc: ...here. * tree-vectorizer.c: Moved to... * tree-vectorizer.cc: ...here. * tree-vrp.c: Moved to... * tree-vrp.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * tsan.c: Moved to... * tsan.cc: ...here. * typed-splay-tree.c: Moved to... * typed-splay-tree.cc: ...here. * ubsan.c: Moved to... * ubsan.cc: ...here. * valtrack.c: Moved to... * valtrack.cc: ...here. * value-prof.c: Moved to... * value-prof.cc: ...here. * var-tracking.c: Moved to... * var-tracking.cc: ...here. * varasm.c: Moved to... * varasm.cc: ...here. * varpool.c: Moved to... * varpool.cc: ...here. * vec-perm-indices.c: Moved to... * vec-perm-indices.cc: ...here. * vec.c: Moved to... * vec.cc: ...here. * vmsdbgout.c: Moved to... * vmsdbgout.cc: ...here. * vr-values.c: Moved to... * vr-values.cc: ...here. * vtable-verify.c: Moved to... * vtable-verify.cc: ...here. * web.c: Moved to... * web.cc: ...here. * xcoffout.c: Moved to... * xcoffout.cc: ...here. gcc/c-family/ChangeLog: * c-ada-spec.c: Moved to... * c-ada-spec.cc: ...here. * c-attribs.c: Moved to... * c-attribs.cc: ...here. * c-common.c: Moved to... * c-common.cc: ...here. * c-cppbuiltin.c: Moved to... * c-cppbuiltin.cc: ...here. * c-dump.c: Moved to... * c-dump.cc: ...here. * c-format.c: Moved to... * c-format.cc: ...here. * c-gimplify.c: Moved to... * c-gimplify.cc: ...here. * c-indentation.c: Moved to... * c-indentation.cc: ...here. * c-lex.c: Moved to... * c-lex.cc: ...here. * c-omp.c: Moved to... * c-omp.cc: ...here. * c-opts.c: Moved to... * c-opts.cc: ...here. * c-pch.c: Moved to... * c-pch.cc: ...here. * c-ppoutput.c: Moved to... * c-ppoutput.cc: ...here. * c-pragma.c: Moved to... * c-pragma.cc: ...here. * c-pretty-print.c: Moved to... * c-pretty-print.cc: ...here. * c-semantics.c: Moved to... * c-semantics.cc: ...here. * c-ubsan.c: Moved to... * c-ubsan.cc: ...here. * c-warn.c: Moved to... * c-warn.cc: ...here. * cppspec.c: Moved to... * cppspec.cc: ...here. * stub-objc.c: Moved to... * stub-objc.cc: ...here. gcc/c/ChangeLog: * c-aux-info.c: Moved to... * c-aux-info.cc: ...here. * c-convert.c: Moved to... * c-convert.cc: ...here. * c-decl.c: Moved to... * c-decl.cc: ...here. * c-errors.c: Moved to... * c-errors.cc: ...here. * c-fold.c: Moved to... * c-fold.cc: ...here. * c-lang.c: Moved to... * c-lang.cc: ...here. * c-objc-common.c: Moved to... * c-objc-common.cc: ...here. * c-parser.c: Moved to... * c-parser.cc: ...here. * c-typeck.c: Moved to... * c-typeck.cc: ...here. * gccspec.c: Moved to... * gccspec.cc: ...here. * gimple-parser.c: Moved to... * gimple-parser.cc: ...here. gcc/cp/ChangeLog: * call.c: Moved to... * call.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constexpr.c: Moved to... * constexpr.cc: ...here. * cp-gimplify.c: Moved to... * cp-gimplify.cc: ...here. * cp-lang.c: Moved to... * cp-lang.cc: ...here. * cp-objcp-common.c: Moved to... * cp-objcp-common.cc: ...here. * cp-ubsan.c: Moved to... * cp-ubsan.cc: ...here. * cvt.c: Moved to... * cvt.cc: ...here. * cxx-pretty-print.c: Moved to... * cxx-pretty-print.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * decl2.c: Moved to... * decl2.cc: ...here. * dump.c: Moved to... * dump.cc: ...here. * error.c: Moved to... * error.cc: ...here. * except.c: Moved to... * except.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * friend.c: Moved to... * friend.cc: ...here. * g++spec.c: Moved to... * g++spec.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lambda.c: Moved to... * lambda.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * mangle.c: Moved to... * mangle.cc: ...here. * method.c: Moved to... * method.cc: ...here. * name-lookup.c: Moved to... * name-lookup.cc: ...here. * optimize.c: Moved to... * optimize.cc: ...here. * parser.c: Moved to... * parser.cc: ...here. * pt.c: Moved to... * pt.cc: ...here. * ptree.c: Moved to... * ptree.cc: ...here. * rtti.c: Moved to... * rtti.cc: ...here. * search.c: Moved to... * search.cc: ...here. * semantics.c: Moved to... * semantics.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * typeck.c: Moved to... * typeck.cc: ...here. * typeck2.c: Moved to... * typeck2.cc: ...here. * vtable-class-hierarchy.c: Moved to... * vtable-class-hierarchy.cc: ...here. gcc/fortran/ChangeLog: * arith.c: Moved to... * arith.cc: ...here. * array.c: Moved to... * array.cc: ...here. * bbt.c: Moved to... * bbt.cc: ...here. * check.c: Moved to... * check.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constructor.c: Moved to... * constructor.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * cpp.c: Moved to... * cpp.cc: ...here. * data.c: Moved to... * data.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * dependency.c: Moved to... * dependency.cc: ...here. * dump-parse-tree.c: Moved to... * dump-parse-tree.cc: ...here. * error.c: Moved to... * error.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * f95-lang.c: Moved to... * f95-lang.cc: ...here. * frontend-passes.c: Moved to... * frontend-passes.cc: ...here. * gfortranspec.c: Moved to... * gfortranspec.cc: ...here. * interface.c: Moved to... * interface.cc: ...here. * intrinsic.c: Moved to... * intrinsic.cc: ...here. * io.c: Moved to... * io.cc: ...here. * iresolve.c: Moved to... * iresolve.cc: ...here. * match.c: Moved to... * 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... * lto-common.cc: ...here. * lto-dump.c: Moved to... * lto-dump.cc: ...here. * lto-lang.c: Moved to... * lto-lang.cc: ...here. * lto-object.c: Moved to... * lto-object.cc: ...here. * lto-partition.c: Moved to... * lto-partition.cc: ...here. * lto-symtab.c: Moved to... * lto-symtab.cc: ...here. * lto.c: Moved to... * lto.cc: ...here. gcc/objc/ChangeLog: * objc-act.c: Moved to... * objc-act.cc: ...here. * objc-encoding.c: Moved to... * objc-encoding.cc: ...here. * objc-gnu-runtime-abi-01.c: Moved to... * objc-gnu-runtime-abi-01.cc: ...here. * objc-lang.c: Moved to... * objc-lang.cc: ...here. * objc-map.c: Moved to... * objc-map.cc: ...here. * objc-next-runtime-abi-01.c: Moved to... * objc-next-runtime-abi-01.cc: ...here. * objc-next-runtime-abi-02.c: Moved to... * objc-next-runtime-abi-02.cc: ...here. * objc-runtime-shared-support.c: Moved to... * objc-runtime-shared-support.cc: ...here. gcc/objcp/ChangeLog: * objcp-decl.c: Moved to... * objcp-decl.cc: ...here. * objcp-lang.c: Moved to... * objcp-lang.cc: ...here. libcpp/ChangeLog: * charset.c: Moved to... * charset.cc: ...here. * directives.c: Moved to... * directives.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * files.c: Moved to... * files.cc: ...here. * identifiers.c: Moved to... * identifiers.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * line-map.c: Moved to... * line-map.cc: ...here. * macro.c: Moved to... * macro.cc: ...here. * makeucnid.c: Moved to... * makeucnid.cc: ...here. * mkdeps.c: Moved to... * mkdeps.cc: ...here. * pch.c: Moved to... * pch.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * traditional.c: Moved to... * traditional.cc: ...here.
Diffstat (limited to 'gcc/tree-ssa-uninit.c')
-rw-r--r--gcc/tree-ssa-uninit.c1447
1 files changed, 0 insertions, 1447 deletions
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c
deleted file mode 100644
index 02e88d5..0000000
--- a/gcc/tree-ssa-uninit.c
+++ /dev/null
@@ -1,1447 +0,0 @@
-/* Predicate aware uninitialized variable warning.
- Copyright (C) 2001-2022 Free Software Foundation, Inc.
- Contributed by Xinliang David Li <davidxl@google.com>
-
-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/>. */
-
-#define INCLUDE_STRING
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "backend.h"
-#include "tree.h"
-#include "gimple.h"
-#include "tree-pass.h"
-#include "ssa.h"
-#include "gimple-pretty-print.h"
-#include "diagnostic-core.h"
-#include "fold-const.h"
-#include "gimple-iterator.h"
-#include "tree-ssa.h"
-#include "tree-cfg.h"
-#include "cfghooks.h"
-#include "attribs.h"
-#include "builtins.h"
-#include "calls.h"
-#include "gimple-range.h"
-
-#include "gimple-predicate-analysis.h"
-
-/* This implements the pass that does predicate aware warning on uses of
- possibly uninitialized variables. The pass first collects the set of
- possibly uninitialized SSA names. For each such name, it walks through
- all its immediate uses. For each immediate use, it rebuilds the condition
- expression (the predicate) that guards the use. The predicate is then
- examined to see if the variable is always defined under that same condition.
- This is done either by pruning the unrealizable paths that lead to the
- default definitions or by checking if the predicate set that guards the
- defining paths is a superset of the use predicate. */
-
-/* Pointer set of potentially undefined ssa names, i.e.,
- ssa names that are defined by phi with operands that
- are not defined or potentially undefined. */
-static hash_set<tree> *possibly_undefined_names = 0;
-
-/* Returns the first bit position (starting from LSB)
- in mask that is non zero. Returns -1 if the mask is empty. */
-static int
-get_mask_first_set_bit (unsigned mask)
-{
- int pos = 0;
- if (mask == 0)
- return -1;
-
- while ((mask & (1 << pos)) == 0)
- pos++;
-
- return pos;
-}
-#define MASK_FIRST_SET_BIT(mask) get_mask_first_set_bit (mask)
-
-/* Return true if T, an SSA_NAME, has an undefined value. */
-static bool
-has_undefined_value_p (tree t)
-{
- return (ssa_undefined_value_p (t)
- || (possibly_undefined_names
- && possibly_undefined_names->contains (t)));
-}
-
-/* Return true if EXPR should suppress either uninitialized warning. */
-
-static inline bool
-get_no_uninit_warning (tree expr)
-{
- return warning_suppressed_p (expr, OPT_Wuninitialized);
-}
-
-/* Suppress both uninitialized warnings for EXPR. */
-
-static inline void
-set_no_uninit_warning (tree expr)
-{
- suppress_warning (expr, OPT_Wuninitialized);
-}
-
-/* Like has_undefined_value_p, but don't return true if the no-warning
- bit is set on SSA_NAME_VAR for either uninit warning. */
-
-static inline bool
-uninit_undefined_value_p (tree t)
-{
- if (!has_undefined_value_p (t))
- return false;
- if (!SSA_NAME_VAR (t))
- return true;
- return !get_no_uninit_warning (SSA_NAME_VAR (t));
-}
-
-/* Emit warnings for uninitialized variables. This is done in two passes.
-
- The first pass notices real uses of SSA names with undefined values.
- Such uses are unconditionally uninitialized, and we can be certain that
- such a use is a mistake. This pass is run before most optimizations,
- so that we catch as many as we can.
-
- The second pass follows PHI nodes to find uses that are potentially
- uninitialized. In this case we can't necessarily prove that the use
- is really uninitialized. This pass is run after most optimizations,
- so that we thread as many jumps and possible, and delete as much dead
- code as possible, in order to reduce false positives. We also look
- again for plain uninitialized variables, since optimization may have
- changed conditionally uninitialized to unconditionally uninitialized. */
-
-/* Emit warning OPT for variable VAR at the point in the program where
- the SSA_NAME T is being used uninitialized. The warning text is in
- MSGID and STMT is the statement that does the uninitialized read.
- PHI_ARG_LOC is the location of the PHI argument if T and VAR are one,
- or UNKNOWN_LOCATION otherwise. */
-
-static void
-warn_uninit (opt_code opt, tree t, tree var, gimple *context,
- location_t phi_arg_loc = UNKNOWN_LOCATION)
-{
- /* Bail if the value isn't provably uninitialized. */
- if (!has_undefined_value_p (t))
- return;
-
- /* Ignore COMPLEX_EXPR as initializing only a part of a complex
- turns in a COMPLEX_EXPR with the not initialized part being
- set to its previous (undefined) value. */
- if (is_gimple_assign (context)
- && gimple_assign_rhs_code (context) == COMPLEX_EXPR)
- return;
-
- /* Ignore REALPART_EXPR or IMAGPART_EXPR if its operand is a call to
- .DEFERRED_INIT. This is for handling the following case correctly:
-
- 1 typedef _Complex float C;
- 2 C foo (int cond)
- 3 {
- 4 C f;
- 5 __imag__ f = 0;
- 6 if (cond)
- 7 {
- 8 __real__ f = 1;
- 9 return f;
- 10 }
- 11 return f;
- 12 }
-
- with -ftrivial-auto-var-init, compiler will insert the following
- artificial initialization at line 4:
- f = .DEFERRED_INIT (f, 2);
- _1 = REALPART_EXPR <f>;
-
- without the following special handling, _1 = REALPART_EXPR <f> will
- be treated as the uninitialized use point, which is incorrect. (the
- real uninitialized use point is at line 11). */
- if (is_gimple_assign (context)
- && (gimple_assign_rhs_code (context) == REALPART_EXPR
- || gimple_assign_rhs_code (context) == IMAGPART_EXPR))
- {
- tree v = gimple_assign_rhs1 (context);
- if (TREE_CODE (TREE_OPERAND (v, 0)) == SSA_NAME
- && gimple_call_internal_p (SSA_NAME_DEF_STMT (TREE_OPERAND (v, 0)),
- IFN_DEFERRED_INIT))
- return;
- }
-
- /* Anonymous SSA_NAMEs shouldn't be uninitialized, but ssa_undefined_value_p
- can return true if the def stmt of an anonymous SSA_NAME is
- 1. A COMPLEX_EXPR created for conversion from scalar to complex. Use the
- underlying var of the COMPLEX_EXPRs real part in that case. See PR71581.
-
- Or
-
- 2. A call to .DEFERRED_INIT internal function. Since the original variable
- has been eliminated by optimziation, we need to get the variable name,
- and variable declaration location from this call. We recorded variable
- name into VAR_NAME_STR, and will get location info and record warning
- suppressed info to VAR_DEF_STMT, which is the .DEFERRED_INIT call. */
-
- const char *var_name_str = NULL;
- gimple *var_def_stmt = NULL;
-
- if (!var && !SSA_NAME_VAR (t))
- {
- var_def_stmt = SSA_NAME_DEF_STMT (t);
-
- if (is_gimple_assign (var_def_stmt)
- && gimple_assign_rhs_code (var_def_stmt) == COMPLEX_EXPR)
- {
- tree v = gimple_assign_rhs1 (var_def_stmt);
- if (TREE_CODE (v) == SSA_NAME
- && has_undefined_value_p (v)
- && zerop (gimple_assign_rhs2 (var_def_stmt)))
- var = SSA_NAME_VAR (v);
- }
-
- if (gimple_call_internal_p (var_def_stmt, IFN_DEFERRED_INIT))
- {
- /* Ignore the call to .DEFERRED_INIT that define the original
- var itself as the following case:
- temp = .DEFERRED_INIT (4, 2, “alt_reloc");
- alt_reloc = temp;
- In order to avoid generating warning for the fake usage
- at alt_reloc = temp.
- */
- tree lhs_var = NULL_TREE;
- tree lhs_var_name = NULL_TREE;
- const char *lhs_var_name_str = NULL;
-
- /* Get the variable name from the 3rd argument of call. */
- tree var_name = gimple_call_arg (var_def_stmt, 2);
- var_name = TREE_OPERAND (TREE_OPERAND (var_name, 0), 0);
- var_name_str = TREE_STRING_POINTER (var_name);
-
- if (is_gimple_assign (context))
- {
- if (TREE_CODE (gimple_assign_lhs (context)) == VAR_DECL)
- lhs_var = gimple_assign_lhs (context);
- else if (TREE_CODE (gimple_assign_lhs (context)) == SSA_NAME)
- lhs_var = SSA_NAME_VAR (gimple_assign_lhs (context));
- }
- if (lhs_var
- && (lhs_var_name = DECL_NAME (lhs_var))
- && (lhs_var_name_str = IDENTIFIER_POINTER (lhs_var_name))
- && (strcmp (lhs_var_name_str, var_name_str) == 0))
- return;
- gcc_assert (var_name_str && var_def_stmt);
- }
- }
-
- if (var == NULL_TREE && var_name_str == NULL)
- return;
-
- /* Avoid warning if we've already done so or if the warning has been
- suppressed. */
- if (((warning_suppressed_p (context, OPT_Wuninitialized)
- || (gimple_assign_single_p (context)
- && get_no_uninit_warning (gimple_assign_rhs1 (context)))))
- || (var && get_no_uninit_warning (var))
- || (var_name_str
- && warning_suppressed_p (var_def_stmt, OPT_Wuninitialized)))
- return;
-
- /* Use either the location of the read statement or that of the PHI
- argument, or that of the uninitialized variable, in that order,
- whichever is valid. */
- location_t location = UNKNOWN_LOCATION;
- if (gimple_has_location (context))
- location = gimple_location (context);
- else if (phi_arg_loc != UNKNOWN_LOCATION)
- location = phi_arg_loc;
- else if (var)
- location = DECL_SOURCE_LOCATION (var);
- else if (var_name_str)
- location = gimple_location (var_def_stmt);
-
- location = linemap_resolve_location (line_table, location,
- LRK_SPELLING_LOCATION, NULL);
-
- auto_diagnostic_group d;
- gcc_assert (opt == OPT_Wuninitialized || opt == OPT_Wmaybe_uninitialized);
- if (var)
- {
- if ((opt == OPT_Wuninitialized
- && !warning_at (location, opt, "%qD is used uninitialized", var))
- || (opt == OPT_Wmaybe_uninitialized
- && !warning_at (location, opt, "%qD may be used uninitialized",
- var)))
- return;
- }
- else if (var_name_str)
- {
- if ((opt == OPT_Wuninitialized
- && !warning_at (location, opt, "%qs is used uninitialized",
- var_name_str))
- || (opt == OPT_Wmaybe_uninitialized
- && !warning_at (location, opt, "%qs may be used uninitialized",
- var_name_str)))
- return;
- }
-
- /* Avoid subsequent warnings for reads of the same variable again. */
- if (var)
- suppress_warning (var, opt);
- else if (var_name_str)
- suppress_warning (var_def_stmt, opt);
-
- /* Issue a note pointing to the read variable unless the warning
- is at the same location. */
- location_t var_loc = var ? DECL_SOURCE_LOCATION (var)
- : gimple_location (var_def_stmt);
- if (location == var_loc)
- return;
-
- if (var)
- inform (var_loc, "%qD was declared here", var);
- else if (var_name_str)
- inform (var_loc, "%qs was declared here", var_name_str);
-}
-
-struct check_defs_data
-{
- /* If we found any may-defs besides must-def clobbers. */
- bool found_may_defs;
-};
-
-/* Return true if STMT is a call to built-in function all of whose
- by-reference arguments are const-qualified (i.e., the function can
- be assumed not to modify them). */
-
-static bool
-builtin_call_nomodifying_p (gimple *stmt)
-{
- if (!gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
- return false;
-
- tree fndecl = gimple_call_fndecl (stmt);
- if (!fndecl)
- return false;
-
- tree fntype = TREE_TYPE (fndecl);
- if (!fntype)
- return false;
-
- /* Check the called function's signature for non-constc pointers.
- If one is found, return false. */
- unsigned argno = 0;
- tree argtype;
- function_args_iterator it;
- FOREACH_FUNCTION_ARGS (fntype, argtype, it)
- {
- if (VOID_TYPE_P (argtype))
- return true;
-
- ++argno;
-
- if (!POINTER_TYPE_P (argtype))
- continue;
-
- if (TYPE_READONLY (TREE_TYPE (argtype)))
- continue;
-
- return false;
- }
-
- /* If the number of actual arguments to the call is less than or
- equal to the number of parameters, return false. */
- unsigned nargs = gimple_call_num_args (stmt);
- if (nargs <= argno)
- return false;
-
- /* Check arguments passed through the ellipsis in calls to variadic
- functions for pointers. If one is found that's a non-constant
- pointer, return false. */
- for (; argno < nargs; ++argno)
- {
- tree arg = gimple_call_arg (stmt, argno);
- argtype = TREE_TYPE (arg);
- if (!POINTER_TYPE_P (argtype))
- continue;
-
- if (TYPE_READONLY (TREE_TYPE (argtype)))
- continue;
-
- return false;
- }
-
- return true;
-}
-
-/* If ARG is a FNDECL parameter declared with attribute access none or
- write_only issue a warning for its read access via PTR. */
-
-static void
-maybe_warn_read_write_only (tree fndecl, gimple *stmt, tree arg, tree ptr)
-{
- if (!fndecl)
- return;
-
- if (get_no_uninit_warning (arg))
- return;
-
- tree fntype = TREE_TYPE (fndecl);
- if (!fntype)
- return;
-
- /* Initialize a map of attribute access specifications for arguments
- to the function function call. */
- rdwr_map rdwr_idx;
- init_attr_rdwr_indices (&rdwr_idx, TYPE_ATTRIBUTES (fntype));
-
- unsigned argno = 0;
- tree parms = DECL_ARGUMENTS (fndecl);
- for (tree parm = parms; parm; parm = TREE_CHAIN (parm), ++argno)
- {
- if (parm != arg)
- continue;
-
- const attr_access* access = rdwr_idx.get (argno);
- if (!access)
- break;
-
- if (access->mode != access_none
- && access->mode != access_write_only)
- continue;
-
- location_t stmtloc
- = linemap_resolve_location (line_table, gimple_location (stmt),
- LRK_SPELLING_LOCATION, NULL);
-
- if (!warning_at (stmtloc, OPT_Wmaybe_uninitialized,
- "%qE may be used uninitialized", ptr))
- break;
-
- suppress_warning (arg, OPT_Wmaybe_uninitialized);
-
- const char* const access_str =
- TREE_STRING_POINTER (access->to_external_string ());
-
- location_t parmloc = DECL_SOURCE_LOCATION (parm);
- inform (parmloc, "accessing argument %u of a function declared with "
- "attribute %<%s%>",
- argno + 1, access_str);
-
- break;
- }
-}
-
-/* Callback for walk_aliased_vdefs. */
-
-static bool
-check_defs (ao_ref *ref, tree vdef, void *data_)
-{
- check_defs_data *data = (check_defs_data *)data_;
- gimple *def_stmt = SSA_NAME_DEF_STMT (vdef);
-
- /* Ignore the vdef if the definition statement is a call
- to .DEFERRED_INIT function. */
- if (gimple_call_internal_p (def_stmt, IFN_DEFERRED_INIT))
- return false;
-
- /* For address taken variable, a temporary variable is added between
- the variable and the call to .DEFERRED_INIT function as:
- _1 = .DEFERRED_INIT (4, 2, &"i1"[0]);
- i1 = _1;
- Ignore this vdef as well. */
- if (is_gimple_assign (def_stmt)
- && gimple_assign_rhs_code (def_stmt) == SSA_NAME)
- {
- tree tmp_var = gimple_assign_rhs1 (def_stmt);
- if (gimple_call_internal_p (SSA_NAME_DEF_STMT (tmp_var),
- IFN_DEFERRED_INIT))
- return false;
- }
-
- /* The ASAN_MARK intrinsic doesn't modify the variable. */
- if (is_gimple_call (def_stmt))
- {
- /* The ASAN_MARK intrinsic doesn't modify the variable. */
- if (gimple_call_internal_p (def_stmt)
- && gimple_call_internal_fn (def_stmt) == IFN_ASAN_MARK)
- return false;
-
- if (tree fndecl = gimple_call_fndecl (def_stmt))
- {
- /* Some sanitizer calls pass integer arguments to built-ins
- that expect pointets. Avoid using gimple_call_builtin_p()
- which fails for such calls. */
- if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL)
- {
- built_in_function fncode = DECL_FUNCTION_CODE (fndecl);
- if (fncode > BEGIN_SANITIZER_BUILTINS
- && fncode < END_SANITIZER_BUILTINS)
- return false;
- }
- }
- }
-
- /* End of VLA scope is not a kill. */
- if (gimple_call_builtin_p (def_stmt, BUILT_IN_STACK_RESTORE))
- return false;
-
- /* If this is a clobber then if it is not a kill walk past it. */
- if (gimple_clobber_p (def_stmt))
- {
- if (stmt_kills_ref_p (def_stmt, ref))
- return true;
- return false;
- }
-
- if (builtin_call_nomodifying_p (def_stmt))
- return false;
-
- /* Found a may-def on this path. */
- data->found_may_defs = true;
- return true;
-}
-
-/* Counters and limits controlling the the depth of analysis and
- strictness of the warning. */
-struct wlimits
-{
- /* Number of VDEFs encountered. */
- unsigned int vdef_cnt;
- /* Number of statements examined by walk_aliased_vdefs. */
- unsigned int oracle_cnt;
- /* Limit on the number of statements visited by walk_aliased_vdefs. */
- unsigned limit;
- /* Set when basic block with statement is executed unconditionally. */
- bool always_executed;
- /* Set to issue -Wmaybe-uninitialized. */
- bool wmaybe_uninit;
-};
-
-/* Determine if REF references an uninitialized operand and diagnose
- it if so. STMS is the referencing statement. LHS is the result
- of the access and may be null. RHS is the variable referenced by
- the access; it may not be null. */
-
-static tree
-maybe_warn_operand (ao_ref &ref, gimple *stmt, tree lhs, tree rhs,
- wlimits &wlims)
-{
- bool has_bit_insert = false;
- use_operand_p luse_p;
- imm_use_iterator liter;
-
- if (get_no_uninit_warning (rhs))
- return NULL_TREE;
-
- /* Do not warn if the base was marked so or this is a
- hard register var. */
- tree base = ao_ref_base (&ref);
- if ((VAR_P (base)
- && DECL_HARD_REGISTER (base))
- || get_no_uninit_warning (base))
- return NULL_TREE;
-
- /* Do not warn if the access is zero size or if it's fully outside
- the object. */
- poly_int64 decl_size;
- if (known_size_p (ref.size)
- && known_eq (ref.max_size, ref.size)
- && (known_eq (ref.size, 0)
- || known_le (ref.offset + ref.size, 0)))
- return NULL_TREE;
-
- if (DECL_P (base)
- && known_ge (ref.offset, 0)
- && DECL_SIZE (base)
- && poly_int_tree_p (DECL_SIZE (base), &decl_size)
- && known_le (decl_size, ref.offset))
- return NULL_TREE;
-
- /* Do not warn if the result of the access is then used for
- a BIT_INSERT_EXPR. */
- if (lhs && TREE_CODE (lhs) == SSA_NAME)
- FOR_EACH_IMM_USE_FAST (luse_p, liter, lhs)
- {
- gimple *use_stmt = USE_STMT (luse_p);
- /* BIT_INSERT_EXPR first operand should not be considered
- a use for the purpose of uninit warnings. */
- if (gassign *ass = dyn_cast <gassign *> (use_stmt))
- {
- if (gimple_assign_rhs_code (ass) == BIT_INSERT_EXPR
- && luse_p->use == gimple_assign_rhs1_ptr (ass))
- {
- has_bit_insert = true;
- break;
- }
- }
- }
-
- if (has_bit_insert)
- return NULL_TREE;
-
- /* Limit the walking to a constant number of stmts after
- we overcommit quadratic behavior for small functions
- and O(n) behavior. */
- if (wlims.oracle_cnt > 128 * 128
- && wlims.oracle_cnt > wlims.vdef_cnt * 2)
- wlims.limit = 32;
-
- check_defs_data data;
- bool fentry_reached = false;
- data.found_may_defs = false;
- tree use = gimple_vuse (stmt);
- if (!use)
- return NULL_TREE;
- int res = walk_aliased_vdefs (&ref, use,
- check_defs, &data, NULL,
- &fentry_reached, wlims.limit);
- if (res == -1)
- {
- wlims.oracle_cnt += wlims.limit;
- return NULL_TREE;
- }
-
- wlims.oracle_cnt += res;
- if (data.found_may_defs)
- return NULL_TREE;
-
- bool found_alloc = false;
-
- if (fentry_reached)
- {
- if (TREE_CODE (base) == MEM_REF)
- base = TREE_OPERAND (base, 0);
-
- /* Follow the chain of SSA_NAME assignments looking for an alloca
- call (or VLA) or malloc/realloc, or for decls. If any is found
- (and in the latter case, the operand is a local variable) issue
- a warning. */
- while (TREE_CODE (base) == SSA_NAME)
- {
- gimple *def_stmt = SSA_NAME_DEF_STMT (base);
-
- if (is_gimple_call (def_stmt)
- && gimple_call_builtin_p (def_stmt))
- {
- /* Detect uses of uninitialized alloca/VLAs. */
- tree fndecl = gimple_call_fndecl (def_stmt);
- const built_in_function fncode = DECL_FUNCTION_CODE (fndecl);
- if (fncode == BUILT_IN_ALLOCA
- || fncode == BUILT_IN_ALLOCA_WITH_ALIGN
- || fncode == BUILT_IN_MALLOC)
- found_alloc = true;
- break;
- }
-
- if (!is_gimple_assign (def_stmt))
- break;
-
- tree_code code = gimple_assign_rhs_code (def_stmt);
- if (code != ADDR_EXPR && code != POINTER_PLUS_EXPR)
- break;
-
- base = gimple_assign_rhs1 (def_stmt);
- if (TREE_CODE (base) == ADDR_EXPR)
- base = TREE_OPERAND (base, 0);
-
- if (DECL_P (base)
- || TREE_CODE (base) == COMPONENT_REF)
- rhs = base;
-
- if (TREE_CODE (base) == MEM_REF)
- base = TREE_OPERAND (base, 0);
-
- if (tree ba = get_base_address (base))
- base = ba;
- }
-
- /* Replace the RHS expression with BASE so that it
- refers to it in the diagnostic (instead of to
- '<unknown>'). */
- if (DECL_P (base)
- && EXPR_P (rhs)
- && TREE_CODE (rhs) != COMPONENT_REF)
- rhs = base;
- }
-
- /* Do not warn if it can be initialized outside this function.
- If we did not reach function entry then we found killing
- clobbers on all paths to entry. */
- if (!found_alloc && fentry_reached)
- {
- if (TREE_CODE (base) == SSA_NAME)
- {
- tree var = SSA_NAME_VAR (base);
- if (var && TREE_CODE (var) == PARM_DECL)
- {
- maybe_warn_read_write_only (cfun->decl, stmt, var, rhs);
- return NULL_TREE;
- }
- }
-
- if (!VAR_P (base)
- || is_global_var (base))
- /* ??? We'd like to use ref_may_alias_global_p but that
- excludes global readonly memory and thus we get bogus
- warnings from p = cond ? "a" : "b" for example. */
- return NULL_TREE;
- }
-
- /* Strip the address-of expression from arrays passed to functions. */
- if (TREE_CODE (rhs) == ADDR_EXPR)
- rhs = TREE_OPERAND (rhs, 0);
-
- /* Check again since RHS may have changed above. */
- if (get_no_uninit_warning (rhs))
- return NULL_TREE;
-
- /* Avoid warning about empty types such as structs with no members.
- The first_field() test is important for C++ where the predicate
- alone isn't always sufficient. */
- tree rhstype = TREE_TYPE (rhs);
- if (POINTER_TYPE_P (rhstype))
- rhstype = TREE_TYPE (rhstype);
- if (is_empty_type (rhstype))
- return NULL_TREE;
-
- bool warned = false;
- /* We didn't find any may-defs so on all paths either
- reached function entry or a killing clobber. */
- location_t location
- = linemap_resolve_location (line_table, gimple_location (stmt),
- LRK_SPELLING_LOCATION, NULL);
- if (wlims.always_executed)
- {
- if (warning_at (location, OPT_Wuninitialized,
- "%qE is used uninitialized", rhs))
- {
- /* ??? This is only effective for decls as in
- gcc.dg/uninit-B-O0.c. Avoid doing this for maybe-uninit
- uses or accesses by functions as it may hide important
- locations. */
- if (lhs)
- set_no_uninit_warning (rhs);
- warned = true;
- }
- }
- else if (wlims.wmaybe_uninit)
- warned = warning_at (location, OPT_Wmaybe_uninitialized,
- "%qE may be used uninitialized", rhs);
-
- return warned ? base : NULL_TREE;
-}
-
-
-/* Diagnose passing addresses of uninitialized objects to either const
- pointer arguments to functions, or to functions declared with attribute
- access implying read access to those objects. */
-
-static void
-maybe_warn_pass_by_reference (gcall *stmt, wlimits &wlims)
-{
- if (!wlims.wmaybe_uninit)
- return;
-
- unsigned nargs = gimple_call_num_args (stmt);
- if (!nargs)
- return;
-
- tree fndecl = gimple_call_fndecl (stmt);
- tree fntype = gimple_call_fntype (stmt);
- if (!fntype)
- return;
-
- /* Const function do not read their arguments. */
- if (gimple_call_flags (stmt) & ECF_CONST)
- return;
-
- const built_in_function fncode
- = (fndecl && gimple_call_builtin_p (stmt, BUILT_IN_NORMAL)
- ? DECL_FUNCTION_CODE (fndecl) : (built_in_function)BUILT_IN_LAST);
-
- if (fncode == BUILT_IN_MEMCPY || fncode == BUILT_IN_MEMMOVE)
- /* Avoid diagnosing calls to raw memory functions (this is overly
- permissive; consider tightening it up). */
- return;
-
- /* Save the current warning setting and replace it either a "maybe"
- when passing addresses of uninitialized variables to const-qualified
- pointers or arguments declared with attribute read_write, or with
- a "certain" when passing them to arguments declared with attribute
- read_only. */
- const bool save_always_executed = wlims.always_executed;
-
- /* Initialize a map of attribute access specifications for arguments
- to the function function call. */
- rdwr_map rdwr_idx;
- init_attr_rdwr_indices (&rdwr_idx, TYPE_ATTRIBUTES (fntype));
-
- tree argtype;
- unsigned argno = 0;
- function_args_iterator it;
-
- FOREACH_FUNCTION_ARGS (fntype, argtype, it)
- {
- ++argno;
-
- if (!POINTER_TYPE_P (argtype))
- continue;
-
- tree access_size = NULL_TREE;
- const attr_access* access = rdwr_idx.get (argno - 1);
- if (access)
- {
- if (access->mode == access_none
- || access->mode == access_write_only)
- continue;
-
- if (access->mode == access_deferred
- && !TYPE_READONLY (TREE_TYPE (argtype)))
- continue;
-
- if (save_always_executed && access->mode == access_read_only)
- /* Attribute read_only arguments imply read access. */
- wlims.always_executed = true;
- else
- /* Attribute read_write arguments are documented as requiring
- initialized objects but it's expected that aggregates may
- be only partially initialized regardless. */
- wlims.always_executed = false;
-
- if (access->sizarg < nargs)
- access_size = gimple_call_arg (stmt, access->sizarg);
- }
- else if (!TYPE_READONLY (TREE_TYPE (argtype)))
- continue;
- else if (save_always_executed && fncode != BUILT_IN_LAST)
- /* Const-qualified arguments to built-ins imply read access. */
- wlims.always_executed = true;
- else
- /* Const-qualified arguments to ordinary functions imply a likely
- (but not definitive) read access. */
- wlims.always_executed = false;
-
- /* Ignore args we are not going to read from. */
- if (gimple_call_arg_flags (stmt, argno - 1)
- & (EAF_UNUSED | EAF_NO_DIRECT_READ))
- continue;
-
- tree arg = gimple_call_arg (stmt, argno - 1);
- if (!POINTER_TYPE_P (TREE_TYPE (arg)))
- /* Avoid actual arguments with invalid types. */
- continue;
-
- ao_ref ref;
- ao_ref_init_from_ptr_and_size (&ref, arg, access_size);
- tree argbase = maybe_warn_operand (ref, stmt, NULL_TREE, arg, wlims);
- if (!argbase)
- continue;
-
- if (access && access->mode != access_deferred)
- {
- const char* const access_str =
- TREE_STRING_POINTER (access->to_external_string ());
-
- if (fndecl)
- {
- location_t loc = DECL_SOURCE_LOCATION (fndecl);
- inform (loc, "in a call to %qD declared with "
- "attribute %<%s%> here", fndecl, access_str);
- }
- else
- {
- /* Handle calls through function pointers. */
- location_t loc = gimple_location (stmt);
- inform (loc, "in a call to %qT declared with "
- "attribute %<%s%>", fntype, access_str);
- }
- }
- else
- {
- /* For a declaration with no relevant attribute access create
- a dummy object and use the formatting function to avoid
- having to complicate things here. */
- attr_access ptr_access = { };
- if (!access)
- access = &ptr_access;
- const std::string argtypestr = access->array_as_string (argtype);
- if (fndecl)
- {
- location_t loc (DECL_SOURCE_LOCATION (fndecl));
- inform (loc, "by argument %u of type %s to %qD "
- "declared here",
- argno, argtypestr.c_str (), fndecl);
- }
- else
- {
- /* Handle calls through function pointers. */
- location_t loc (gimple_location (stmt));
- inform (loc, "by argument %u of type %s to %qT",
- argno, argtypestr.c_str (), fntype);
- }
- }
-
- if (DECL_P (argbase))
- {
- location_t loc = DECL_SOURCE_LOCATION (argbase);
- inform (loc, "%qD declared here", argbase);
- }
- }
-
- wlims.always_executed = save_always_executed;
-}
-
-/* Warn about an uninitialized PHI argument on the fallthru path to
- an always executed block BB. */
-
-static void
-warn_uninit_phi_uses (basic_block bb)
-{
- edge_iterator ei;
- edge e, found = NULL, found_back = NULL;
- /* Look for a fallthru and possibly a single backedge. */
- FOR_EACH_EDGE (e, ei, bb->preds)
- {
- /* Ignore backedges. */
- if (dominated_by_p (CDI_DOMINATORS, e->src, bb))
- {
- if (found_back)
- {
- found = NULL;
- break;
- }
- found_back = e;
- continue;
- }
- if (found)
- {
- found = NULL;
- break;
- }
- found = e;
- }
- if (!found)
- return;
-
- basic_block succ = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun));
- for (gphi_iterator si = gsi_start_phis (bb); !gsi_end_p (si);
- gsi_next (&si))
- {
- gphi *phi = si.phi ();
- tree def = PHI_ARG_DEF_FROM_EDGE (phi, found);
- if (TREE_CODE (def) != SSA_NAME
- || !SSA_NAME_IS_DEFAULT_DEF (def)
- || virtual_operand_p (def))
- continue;
- /* If there's a default def on the fallthru edge PHI
- value and there's a use that post-dominates entry
- then that use is uninitialized and we can warn. */
- imm_use_iterator iter;
- use_operand_p use_p;
- gimple *use_stmt = NULL;
- FOR_EACH_IMM_USE_FAST (use_p, iter, gimple_phi_result (phi))
- {
- use_stmt = USE_STMT (use_p);
- if (gimple_location (use_stmt) != UNKNOWN_LOCATION
- && dominated_by_p (CDI_POST_DOMINATORS, succ,
- gimple_bb (use_stmt))
- /* If we found a non-fallthru edge make sure the
- use is inside the loop, otherwise the backedge
- can serve as initialization. */
- && (!found_back
- || dominated_by_p (CDI_DOMINATORS, found_back->src,
- gimple_bb (use_stmt))))
- break;
- use_stmt = NULL;
- }
- if (use_stmt)
- warn_uninit (OPT_Wuninitialized, def,
- SSA_NAME_VAR (def), use_stmt);
- }
-}
-
-/* Issue warnings about reads of uninitialized variables. WMAYBE_UNINIT
- is true to issue -Wmaybe-uninitialized, otherwise -Wuninitialized. */
-
-static void
-warn_uninitialized_vars (bool wmaybe_uninit)
-{
- /* Counters and limits controlling the the depth of the warning. */
- wlimits wlims = { };
- wlims.wmaybe_uninit = wmaybe_uninit;
-
- gimple_stmt_iterator gsi;
- basic_block bb;
- FOR_EACH_BB_FN (bb, cfun)
- {
- basic_block succ = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun));
- wlims.always_executed = dominated_by_p (CDI_POST_DOMINATORS, succ, bb);
-
- if (wlims.always_executed)
- warn_uninit_phi_uses (bb);
-
- for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gimple *stmt = gsi_stmt (gsi);
-
- /* The call is an artificial use, will not provide meaningful
- error message. If the result of the call is used somewhere
- else, we warn there instead. */
- if (gimple_call_internal_p (stmt, IFN_DEFERRED_INIT))
- continue;
-
- if (is_gimple_debug (stmt))
- continue;
-
- /* We only do data flow with SSA_NAMEs, so that's all we
- can warn about. */
- use_operand_p use_p;
- ssa_op_iter op_iter;
- FOR_EACH_SSA_USE_OPERAND (use_p, stmt, op_iter, SSA_OP_USE)
- {
- /* BIT_INSERT_EXPR first operand should not be considered
- a use for the purpose of uninit warnings. */
- if (gassign *ass = dyn_cast <gassign *> (stmt))
- {
- if (gimple_assign_rhs_code (ass) == BIT_INSERT_EXPR
- && use_p->use == gimple_assign_rhs1_ptr (ass))
- continue;
- }
- tree use = USE_FROM_PTR (use_p);
- if (wlims.always_executed)
- warn_uninit (OPT_Wuninitialized, use,
- SSA_NAME_VAR (use), stmt);
- else if (wmaybe_uninit)
- warn_uninit (OPT_Wmaybe_uninitialized, use,
- SSA_NAME_VAR (use), stmt);
- }
-
- /* For limiting the alias walk below we count all
- vdefs in the function. */
- if (gimple_vdef (stmt))
- wlims.vdef_cnt++;
-
- if (gcall *call = dyn_cast <gcall *> (stmt))
- maybe_warn_pass_by_reference (call, wlims);
- else if (gimple_assign_load_p (stmt)
- && gimple_has_location (stmt))
- {
- tree rhs = gimple_assign_rhs1 (stmt);
- tree lhs = gimple_assign_lhs (stmt);
-
- ao_ref ref;
- ao_ref_init (&ref, rhs);
- tree var = maybe_warn_operand (ref, stmt, lhs, rhs, wlims);
- if (!var)
- continue;
-
- if (DECL_P (var))
- {
- location_t loc = DECL_SOURCE_LOCATION (var);
- inform (loc, "%qD declared here", var);
- }
- }
- }
- }
-}
-
-/* Checks if the operand OPND of PHI is defined by
- another phi with one operand defined by this PHI,
- but the rest operands are all defined. If yes,
- returns true to skip this operand as being
- redundant. Can be enhanced to be more general. */
-
-static bool
-can_skip_redundant_opnd (tree opnd, gimple *phi)
-{
- tree phi_def = gimple_phi_result (phi);
- gimple *op_def = SSA_NAME_DEF_STMT (opnd);
- if (gimple_code (op_def) != GIMPLE_PHI)
- return false;
-
- unsigned n = gimple_phi_num_args (op_def);
- for (unsigned i = 0; i < n; ++i)
- {
- tree op = gimple_phi_arg_def (op_def, i);
- if (TREE_CODE (op) != SSA_NAME)
- continue;
- if (op != phi_def && uninit_undefined_value_p (op))
- return false;
- }
-
- return true;
-}
-
-/* Return a bitset holding the positions of arguments in PHI with empty
- (or possibly empty) definitions. */
-
-static unsigned
-compute_uninit_opnds_pos (gphi *phi)
-{
- unsigned uninit_opnds = 0;
-
- unsigned n = gimple_phi_num_args (phi);
- /* Bail out for phi with too many args. */
- if (n > predicate::func_t::max_phi_args)
- return 0;
-
- for (unsigned i = 0; i < n; ++i)
- {
- tree op = gimple_phi_arg_def (phi, i);
- if (TREE_CODE (op) == SSA_NAME
- && uninit_undefined_value_p (op)
- && !can_skip_redundant_opnd (op, phi))
- {
- if (cfun->has_nonlocal_label || cfun->calls_setjmp)
- {
- /* Ignore SSA_NAMEs that appear on abnormal edges
- somewhere. */
- if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op))
- continue;
- }
- MASK_SET_BIT (uninit_opnds, i);
- }
- }
- return uninit_opnds;
-}
-
-/* Function object type used to determine whether an expression
- is of interest to the predicate analyzer. */
-
-struct uninit_undef_val_t: public predicate::func_t
-{
- virtual bool operator()(tree) override;
- virtual unsigned phi_arg_set (gphi *) override;
-};
-
-/* Return true if the argument is an expression of interest. */
-
-bool
-uninit_undef_val_t::operator()(tree val)
-{
- if (TREE_CODE (val) == SSA_NAME)
- return uninit_undefined_value_p (val);
-
- return false;
-}
-
-/* Return a bitset of PHI arguments of interest. */
-
-unsigned
-uninit_undef_val_t::phi_arg_set (gphi *phi)
-{
- return compute_uninit_opnds_pos (phi);
-}
-
-/* Searches through all uses of a potentially
- uninitialized variable defined by PHI and returns a use
- statement if the use is not properly guarded. It returns
- NULL if all uses are guarded. UNINIT_OPNDS is a bitvector
- holding the position(s) of uninit PHI operands. WORKLIST
- is the vector of candidate phis that may be updated by this
- function. ADDED_TO_WORKLIST is the pointer set tracking
- if the new phi is already in the worklist. */
-
-static gimple *
-find_uninit_use (gphi *phi, unsigned uninit_opnds,
- vec<gphi *> *worklist, hash_set<gphi *> *added_to_worklist)
-{
- /* The Boolean predicate guarding the PHI definition. Initialized
- lazily from PHI in the first call to is_use_guarded() and cached
- for subsequent iterations. */
- uninit_undef_val_t eval;
- predicate def_preds (eval);
-
- use_operand_p use_p;
- imm_use_iterator iter;
- tree phi_result = gimple_phi_result (phi);
- FOR_EACH_IMM_USE_FAST (use_p, iter, phi_result)
- {
- gimple *use_stmt = USE_STMT (use_p);
- if (is_gimple_debug (use_stmt))
- continue;
-
- basic_block use_bb;
- if (gphi *use_phi = dyn_cast<gphi *> (use_stmt))
- use_bb = gimple_phi_arg_edge (use_phi,
- PHI_ARG_INDEX_FROM_USE (use_p))->src;
- else
- use_bb = gimple_bb (use_stmt);
-
- if (def_preds.is_use_guarded (use_stmt, use_bb, phi, uninit_opnds))
- continue;
-
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, "Found unguarded use in bb %u: ",
- use_bb->index);
- print_gimple_stmt (dump_file, use_stmt, 0);
- }
- /* Found one real use, return. */
- if (gimple_code (use_stmt) != GIMPLE_PHI)
- return use_stmt;
-
- /* Found a phi use that is not guarded,
- add the phi to the worklist. */
- if (!added_to_worklist->add (as_a<gphi *> (use_stmt)))
- {
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, "[WORKLIST]: Update worklist with phi: ");
- print_gimple_stmt (dump_file, use_stmt, 0);
- }
-
- worklist->safe_push (as_a<gphi *> (use_stmt));
- possibly_undefined_names->add (phi_result);
- }
- }
-
- return NULL;
-}
-
-/* Look for inputs to PHI that are SSA_NAMEs that have empty definitions
- and gives warning if there exists a runtime path from the entry to a
- use of the PHI def that does not contain a definition. In other words,
- the warning is on the real use. The more dead paths that can be pruned
- by the compiler, the fewer false positives the warning is. WORKLIST
- is a vector of candidate phis to be examined. ADDED_TO_WORKLIST is
- a pointer set tracking if the new phi is added to the worklist or not. */
-
-static void
-warn_uninitialized_phi (gphi *phi, vec<gphi *> *worklist,
- hash_set<gphi *> *added_to_worklist)
-{
- /* Don't look at virtual operands. */
- if (virtual_operand_p (gimple_phi_result (phi)))
- return;
-
- unsigned uninit_opnds = compute_uninit_opnds_pos (phi);
- if (MASK_EMPTY (uninit_opnds))
- return;
-
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, "Examining phi: ");
- print_gimple_stmt (dump_file, phi, 0);
- }
-
- gimple *uninit_use_stmt = find_uninit_use (phi, uninit_opnds,
- worklist, added_to_worklist);
-
- /* All uses are properly guarded but a new PHI may have been added
- to WORKLIST. */
- if (!uninit_use_stmt)
- return;
-
- unsigned phiarg_index = MASK_FIRST_SET_BIT (uninit_opnds);
- tree uninit_op = gimple_phi_arg_def (phi, phiarg_index);
- if (SSA_NAME_VAR (uninit_op) == NULL_TREE)
- return;
-
- location_t loc = UNKNOWN_LOCATION;
- if (gimple_phi_arg_has_location (phi, phiarg_index))
- loc = gimple_phi_arg_location (phi, phiarg_index);
- else
- {
- tree arg_def = gimple_phi_arg_def (phi, phiarg_index);
- if (TREE_CODE (arg_def) == SSA_NAME)
- {
- gimple *def_stmt = SSA_NAME_DEF_STMT (arg_def);
- if (gphi *arg_phi = dyn_cast<gphi *> (def_stmt))
- {
- unsigned uop = compute_uninit_opnds_pos (arg_phi);
- unsigned idx = MASK_FIRST_SET_BIT (uop);
- if (idx < gimple_phi_num_args (arg_phi)
- && gimple_phi_arg_has_location (arg_phi, idx))
- loc = gimple_phi_arg_location (arg_phi, idx);
- }
- }
- }
-
- warn_uninit (OPT_Wmaybe_uninitialized, uninit_op,
- SSA_NAME_VAR (uninit_op),
- uninit_use_stmt, loc);
-}
-
-static bool
-gate_warn_uninitialized (void)
-{
- return warn_uninitialized || warn_maybe_uninitialized;
-}
-
-namespace {
-
-const pass_data pass_data_late_warn_uninitialized =
-{
- GIMPLE_PASS, /* type */
- "uninit", /* name */
- OPTGROUP_NONE, /* optinfo_flags */
- TV_NONE, /* tv_id */
- PROP_ssa, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0, /* todo_flags_finish */
-};
-
-class pass_late_warn_uninitialized : public gimple_opt_pass
-{
-public:
- pass_late_warn_uninitialized (gcc::context *ctxt)
- : gimple_opt_pass (pass_data_late_warn_uninitialized, ctxt)
- {}
-
- /* opt_pass methods: */
- opt_pass *clone () { return new pass_late_warn_uninitialized (m_ctxt); }
- virtual bool gate (function *) { return gate_warn_uninitialized (); }
- virtual unsigned int execute (function *);
-
-}; // class pass_late_warn_uninitialized
-
-static void
-execute_late_warn_uninitialized (function *fun)
-{
- basic_block bb;
- gphi_iterator gsi;
- vec<gphi *> worklist = vNULL;
-
- calculate_dominance_info (CDI_DOMINATORS);
- calculate_dominance_info (CDI_POST_DOMINATORS);
- /* Re-do the plain uninitialized variable check, as optimization may have
- straightened control flow. Do this first so that we don't accidentally
- get a "may be" warning when we'd have seen an "is" warning later. */
- warn_uninitialized_vars (/*warn_maybe_uninitialized=*/1);
-
- timevar_push (TV_TREE_UNINIT);
-
- possibly_undefined_names = new hash_set<tree>;
- hash_set<gphi *> added_to_worklist;
-
- /* Initialize worklist */
- FOR_EACH_BB_FN (bb, fun)
- for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gphi *phi = gsi.phi ();
-
- /* Don't look at virtual operands. */
- if (virtual_operand_p (gimple_phi_result (phi)))
- continue;
-
- unsigned n = gimple_phi_num_args (phi);
- for (unsigned i = 0; i < n; ++i)
- {
- tree op = gimple_phi_arg_def (phi, i);
- if (TREE_CODE (op) == SSA_NAME && uninit_undefined_value_p (op))
- {
- worklist.safe_push (phi);
- added_to_worklist.add (phi);
- if (dump_file && (dump_flags & TDF_DETAILS))
- {
- fprintf (dump_file, "[WORKLIST]: add to initial list "
- "for operand %u of: ", i);
- print_gimple_stmt (dump_file, phi, 0);
- }
- break;
- }
- }
- }
-
- while (worklist.length () != 0)
- {
- gphi *cur_phi = 0;
- cur_phi = worklist.pop ();
- warn_uninitialized_phi (cur_phi, &worklist, &added_to_worklist);
- }
-
- worklist.release ();
- delete possibly_undefined_names;
- possibly_undefined_names = NULL;
- free_dominance_info (CDI_POST_DOMINATORS);
- timevar_pop (TV_TREE_UNINIT);
-}
-
-unsigned int
-pass_late_warn_uninitialized::execute (function *fun)
-{
- execute_late_warn_uninitialized (fun);
- return 0;
-}
-
-} // anon namespace
-
-gimple_opt_pass *
-make_pass_late_warn_uninitialized (gcc::context *ctxt)
-{
- return new pass_late_warn_uninitialized (ctxt);
-}
-
-static unsigned int
-execute_early_warn_uninitialized (void)
-{
- /* Currently, this pass runs always but
- execute_late_warn_uninitialized only runs with optimization. With
- optimization we want to warn about possible uninitialized as late
- as possible, thus don't do it here. However, without
- optimization we need to warn here about "may be uninitialized". */
- calculate_dominance_info (CDI_DOMINATORS);
- calculate_dominance_info (CDI_POST_DOMINATORS);
-
- warn_uninitialized_vars (/*warn_maybe_uninitialized=*/!optimize);
-
- /* Post-dominator information cannot be reliably updated. Free it
- after the use. */
-
- free_dominance_info (CDI_POST_DOMINATORS);
- return 0;
-}
-
-namespace {
-
-const pass_data pass_data_early_warn_uninitialized =
-{
- GIMPLE_PASS, /* type */
- "*early_warn_uninitialized", /* name */
- OPTGROUP_NONE, /* optinfo_flags */
- TV_TREE_UNINIT, /* tv_id */
- PROP_ssa, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0, /* todo_flags_finish */
-};
-
-class pass_early_warn_uninitialized : public gimple_opt_pass
-{
-public:
- pass_early_warn_uninitialized (gcc::context *ctxt)
- : gimple_opt_pass (pass_data_early_warn_uninitialized, ctxt)
- {}
-
- /* opt_pass methods: */
- virtual bool gate (function *) { return gate_warn_uninitialized (); }
- virtual unsigned int execute (function *)
- {
- return execute_early_warn_uninitialized ();
- }
-
-}; // class pass_early_warn_uninitialized
-
-} // anon namespace
-
-gimple_opt_pass *
-make_pass_early_warn_uninitialized (gcc::context *ctxt)
-{
- return new pass_early_warn_uninitialized (ctxt);
-}
generated by cgit v1.1 at 2025-05-20 23:20:21 +0000