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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/gimple-ssa-isolate-paths.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 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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/gimple-ssa-isolate-paths.c')
-rw-r--r--gcc/gimple-ssa-isolate-paths.c994
1 files changed, 0 insertions, 994 deletions
diff --git a/gcc/gimple-ssa-isolate-paths.c b/gcc/gimple-ssa-isolate-paths.c
deleted file mode 100644
index cc0ed97..0000000
--- a/gcc/gimple-ssa-isolate-paths.c
+++ /dev/null
@@ -1,994 +0,0 @@
-/* Detect paths through the CFG which can never be executed in a conforming
- program and isolate them.
-
- Copyright (C) 2013-2022 Free Software Foundation, Inc.
-
-This file is part of GCC.
-
-GCC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3, or (at your option)
-any later version.
-
-GCC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING3. If not see
-<http://www.gnu.org/licenses/>. */
-
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "backend.h"
-#include "tree.h"
-#include "gimple.h"
-#include "cfghooks.h"
-#include "tree-pass.h"
-#include "ssa.h"
-#include "diagnostic-core.h"
-#include "fold-const.h"
-#include "gimple-iterator.h"
-#include "gimple-walk.h"
-#include "tree-ssa.h"
-#include "cfgloop.h"
-#include "tree-cfg.h"
-#include "cfganal.h"
-#include "intl.h"
-
-
-static bool cfg_altered;
-
-/* Callback for walk_stmt_load_store_ops.
-
- Return TRUE if OP will dereference the tree stored in DATA, FALSE
- otherwise.
-
- This routine only makes a superficial check for a dereference. Thus,
- it must only be used if it is safe to return a false negative. */
-static bool
-check_loadstore (gimple *stmt, tree op, tree, void *data)
-{
- if ((TREE_CODE (op) == MEM_REF || TREE_CODE (op) == TARGET_MEM_REF)
- && operand_equal_p (TREE_OPERAND (op, 0), (tree)data, 0))
- {
- TREE_THIS_VOLATILE (op) = 1;
- TREE_SIDE_EFFECTS (op) = 1;
- update_stmt (stmt);
- return true;
- }
- return false;
-}
-
-/* Insert a trap after SI and split the block after the trap. */
-
-static void
-insert_trap (gimple_stmt_iterator *si_p, tree op)
-{
- /* We want the NULL pointer dereference to actually occur so that
- code that wishes to catch the signal can do so.
-
- If the dereference is a load, then there's nothing to do as the
- LHS will be a throw-away SSA_NAME and the RHS is the NULL dereference.
-
- If the dereference is a store and we can easily transform the RHS,
- then simplify the RHS to enable more DCE. Note that we require the
- statement to be a GIMPLE_ASSIGN which filters out calls on the RHS. */
- gimple *stmt = gsi_stmt (*si_p);
- if (walk_stmt_load_store_ops (stmt, (void *)op, NULL, check_loadstore)
- && is_gimple_assign (stmt)
- && INTEGRAL_TYPE_P (TREE_TYPE (gimple_assign_lhs (stmt))))
- {
- /* We just need to turn the RHS into zero converted to the proper
- type. */
- tree type = TREE_TYPE (gimple_assign_lhs (stmt));
- gimple_assign_set_rhs_code (stmt, INTEGER_CST);
- gimple_assign_set_rhs1 (stmt, fold_convert (type, integer_zero_node));
- update_stmt (stmt);
- }
-
- gcall *new_stmt
- = gimple_build_call (builtin_decl_explicit (BUILT_IN_TRAP), 0);
- gimple_seq seq = NULL;
- gimple_seq_add_stmt (&seq, new_stmt);
-
- /* If we had a NULL pointer dereference, then we want to insert the
- __builtin_trap after the statement, for the other cases we want
- to insert before the statement. */
- if (walk_stmt_load_store_ops (stmt, (void *)op,
- check_loadstore,
- check_loadstore))
- {
- gsi_insert_after (si_p, seq, GSI_NEW_STMT);
- if (stmt_ends_bb_p (stmt))
- {
- split_block (gimple_bb (stmt), stmt);
- return;
- }
- }
- else
- gsi_insert_before (si_p, seq, GSI_NEW_STMT);
-
- split_block (gimple_bb (new_stmt), new_stmt);
- *si_p = gsi_for_stmt (stmt);
-}
-
-/* BB when reached via incoming edge E will exhibit undefined behavior
- at STMT. Isolate and optimize the path which exhibits undefined
- behavior.
-
- Isolation is simple. Duplicate BB and redirect E to BB'.
-
- Optimization is simple as well. Replace STMT in BB' with an
- unconditional trap and remove all outgoing edges from BB'.
-
- If RET_ZERO, do not trap, only return NULL.
-
- DUPLICATE is a pre-existing duplicate, use it as BB' if it exists.
-
- Return BB' (which may be equal to DUPLICATE). */
-
-ATTRIBUTE_RETURNS_NONNULL basic_block
-isolate_path (basic_block bb, basic_block duplicate,
- edge e, gimple *stmt, tree op, bool ret_zero)
-{
- gimple_stmt_iterator si, si2;
- edge_iterator ei;
- edge e2;
- bool impossible = true;
- profile_count count = e->count ();
-
- for (si = gsi_start_bb (bb); gsi_stmt (si) != stmt; gsi_next (&si))
- if (stmt_can_terminate_bb_p (gsi_stmt (si)))
- {
- impossible = false;
- break;
- }
- force_edge_cold (e, impossible);
-
- /* First duplicate BB if we have not done so already and remove all
- the duplicate's outgoing edges as duplicate is going to unconditionally
- trap. Removing the outgoing edges is both an optimization and ensures
- we don't need to do any PHI node updates. */
- if (!duplicate)
- {
- duplicate = duplicate_block (bb, NULL, NULL);
- duplicate->count = profile_count::zero ();
- if (!ret_zero)
- for (ei = ei_start (duplicate->succs); (e2 = ei_safe_edge (ei)); )
- remove_edge (e2);
- }
- bb->count -= count;
-
- /* Complete the isolation step by redirecting E to reach DUPLICATE. */
- e2 = redirect_edge_and_branch (e, duplicate);
- if (e2)
- {
- flush_pending_stmts (e2);
-
- /* Update profile only when redirection is really processed. */
- bb->count += e->count ();
- }
-
- /* There may be more than one statement in DUPLICATE which exhibits
- undefined behavior. Ultimately we want the first such statement in
- DUPLCIATE so that we're able to delete as much code as possible.
-
- So each time we discover undefined behavior in DUPLICATE, search for
- the statement which triggers undefined behavior. If found, then
- transform the statement into a trap and delete everything after the
- statement. If not found, then this particular instance was subsumed by
- an earlier instance of undefined behavior and there's nothing to do.
-
- This is made more complicated by the fact that we have STMT, which is in
- BB rather than in DUPLICATE. So we set up two iterators, one for each
- block and walk forward looking for STMT in BB, advancing each iterator at
- each step.
-
- When we find STMT the second iterator should point to STMT's equivalent in
- duplicate. If DUPLICATE ends before STMT is found in BB, then there's
- nothing to do.
-
- Ignore labels and debug statements. */
- si = gsi_start_nondebug_after_labels_bb (bb);
- si2 = gsi_start_nondebug_after_labels_bb (duplicate);
- while (!gsi_end_p (si) && !gsi_end_p (si2) && gsi_stmt (si) != stmt)
- {
- gsi_next_nondebug (&si);
- gsi_next_nondebug (&si2);
- }
-
- /* This would be an indicator that we never found STMT in BB, which should
- never happen. */
- gcc_assert (!gsi_end_p (si));
-
- /* If we did not run to the end of DUPLICATE, then SI points to STMT and
- SI2 points to the duplicate of STMT in DUPLICATE. Insert a trap
- before SI2 and remove SI2 and all trailing statements. */
- if (!gsi_end_p (si2))
- {
- if (ret_zero)
- {
- greturn *ret = as_a <greturn *> (gsi_stmt (si2));
- tree zero = build_zero_cst (TREE_TYPE (gimple_return_retval (ret)));
- gimple_return_set_retval (ret, zero);
- update_stmt (ret);
- }
- else
- insert_trap (&si2, op);
- }
-
- return duplicate;
-}
-
-/* Return TRUE if STMT is a div/mod operation using DIVISOR as the divisor.
- FALSE otherwise. */
-
-static bool
-is_divmod_with_given_divisor (gimple *stmt, tree divisor)
-{
- /* Only assignments matter. */
- if (!is_gimple_assign (stmt))
- return false;
-
- /* Check for every DIV/MOD expression. */
- enum tree_code rhs_code = gimple_assign_rhs_code (stmt);
- if (rhs_code == TRUNC_DIV_EXPR
- || rhs_code == FLOOR_DIV_EXPR
- || rhs_code == CEIL_DIV_EXPR
- || rhs_code == EXACT_DIV_EXPR
- || rhs_code == ROUND_DIV_EXPR
- || rhs_code == TRUNC_MOD_EXPR
- || rhs_code == FLOOR_MOD_EXPR
- || rhs_code == CEIL_MOD_EXPR
- || rhs_code == ROUND_MOD_EXPR)
- {
- /* Pointer equality is fine when DIVISOR is an SSA_NAME, but
- not sufficient for constants which may have different types. */
- if (operand_equal_p (gimple_assign_rhs2 (stmt), divisor, 0))
- return true;
- }
- return false;
-}
-
-/* NAME is an SSA_NAME that we have already determined has the value 0 or NULL.
-
- Return TRUE if USE_STMT uses NAME in a way where a 0 or NULL value results
- in undefined behavior, FALSE otherwise
-
- LOC is used for issuing diagnostics. This case represents potential
- undefined behavior exposed by path splitting and that's reflected in
- the diagnostic. */
-
-bool
-stmt_uses_name_in_undefined_way (gimple *use_stmt, tree name, location_t loc)
-{
- /* If we are working with a non pointer type, then see
- if this use is a DIV/MOD operation using NAME as the
- divisor. */
- if (!POINTER_TYPE_P (TREE_TYPE (name)))
- {
- if (!cfun->can_throw_non_call_exceptions)
- return is_divmod_with_given_divisor (use_stmt, name);
- return false;
- }
-
- /* NAME is a pointer, so see if it's used in a context where it must
- be non-NULL. */
- bool by_dereference
- = infer_nonnull_range_by_dereference (use_stmt, name);
-
- if (by_dereference
- || infer_nonnull_range_by_attribute (use_stmt, name))
- {
-
- if (by_dereference)
- {
- warning_at (loc, OPT_Wnull_dereference,
- "potential null pointer dereference");
- if (!flag_isolate_erroneous_paths_dereference)
- return false;
- }
- else
- {
- if (!flag_isolate_erroneous_paths_attribute)
- return false;
- }
- return true;
- }
- return false;
-}
-
-/* Return TRUE if USE_STMT uses 0 or NULL in a context which results in
- undefined behavior, FALSE otherwise.
-
- These cases are explicit in the IL. */
-
-bool
-stmt_uses_0_or_null_in_undefined_way (gimple *stmt)
-{
- if (!cfun->can_throw_non_call_exceptions
- && is_divmod_with_given_divisor (stmt, integer_zero_node))
- return true;
-
- /* By passing null_pointer_node, we can use the
- infer_nonnull_range functions to detect explicit NULL
- pointer dereferences and other uses where a non-NULL
- value is required. */
-
- bool by_dereference
- = infer_nonnull_range_by_dereference (stmt, null_pointer_node);
- if (by_dereference
- || infer_nonnull_range_by_attribute (stmt, null_pointer_node))
- {
- if (by_dereference)
- {
- location_t loc = gimple_location (stmt);
- warning_at (loc, OPT_Wnull_dereference,
- "null pointer dereference");
- if (!flag_isolate_erroneous_paths_dereference)
- return false;
- }
- else
- {
- if (!flag_isolate_erroneous_paths_attribute)
- return false;
- }
- return true;
- }
- return false;
-}
-
-/* Describes the property of a return statement that may return
- the address of one or more local variables. The type must
- be safely assignable and copyable so that it can be stored in
- a hash_map. */
-class args_loc_t
-{
- public:
-
- args_loc_t (): nargs (), locvec (), ptr (&ptr)
- {
- locvec.create (4);
- }
-
- args_loc_t (const args_loc_t &rhs)
- : nargs (rhs.nargs), locvec (rhs.locvec.copy ()), ptr (&ptr) { }
-
- args_loc_t& operator= (const args_loc_t &rhs)
- {
- nargs = rhs.nargs;
- locvec.release ();
- locvec = rhs.locvec.copy ();
- return *this;
- }
-
- ~args_loc_t ()
- {
- locvec.release ();
- gcc_assert (ptr == &ptr);
- }
-
- /* For a PHI in a return statement its number of arguments. When greater
- than LOCVEC.LENGTH () implies that an address of one of the locals in
- LOCVEC may but need not be returned by the statement. Otherwise,
- unless both are zero, it implies it definitely is returned. */
- unsigned nargs;
- /* The locations of local variables/alloca calls returned by the return
- statement. Avoid using auto_vec here since it's not safe to copy due
- to pr90904. */
- vec <location_t> locvec;
- void *ptr;
-};
-
-/* A mapping from a return statement to the locations of local variables
- whose addresses it may return. */
-typedef hash_map <gimple *, args_loc_t> locmap_t;
-
-/* Given the LOCMAP mapping, issue diagnostics about returning addresses
- of local variables. When MAYBE is set, all diagnostics will be of
- the "may return" kind. Otherwise each will be determined based on
- the equality of the corresponding NARGS and LOCVEC.LENGTH () values. */
-
-static void
-diag_returned_locals (bool maybe, const locmap_t &locmap)
-{
- for (locmap_t::iterator it = locmap.begin (); it != locmap.end (); ++it)
- {
- gimple *stmt = (*it).first;
- const args_loc_t &argsloc = (*it).second;
- location_t stmtloc = gimple_location (stmt);
- if (stmtloc == UNKNOWN_LOCATION)
- /* When multiple return statements are merged into one it
- may not have an associated location. Use the location
- of the closing brace instead. */
- stmtloc = cfun->function_end_locus;
-
- auto_diagnostic_group d;
- unsigned nargs = argsloc.locvec.length ();
- if (warning_at (stmtloc, OPT_Wreturn_local_addr,
- (maybe || argsloc.nargs > nargs
- ? G_("function may return address of local variable")
- : G_("function returns address of local variable"))))
- {
- for (unsigned i = 0; i != nargs; ++i)
- inform (argsloc.locvec[i], "declared here");
- }
- }
-}
-
-/* Return true if EXPR is an expression of pointer type that refers
- to the address of one or more variables with automatic storage
- duration. If so, add an entry to *PLOCMAP and insert into
- PLOCMAP->LOCVEC the locations of the corresponding local variables
- whose address is returned by the RETURN_STMT (which may be set to
- (gimple*)-1 as a placeholder for such a statement). VISITED is
- a bitmap of PHI nodes already visited by recursive calls. When
- null, PHI expressions are not considered. */
-
-static bool
-is_addr_local (gimple *return_stmt, tree exp, locmap_t *plocmap,
- hash_set<gphi *> *visited)
-{
- if (TREE_CODE (exp) == ADDR_EXPR)
- {
- tree baseaddr = get_base_address (TREE_OPERAND (exp, 0));
- if (TREE_CODE (baseaddr) == MEM_REF)
- return is_addr_local (return_stmt, TREE_OPERAND (baseaddr, 0),
- plocmap, visited);
-
- if ((!VAR_P (baseaddr)
- || is_global_var (baseaddr))
- && TREE_CODE (baseaddr) != PARM_DECL)
- return false;
-
- args_loc_t &argsloc = plocmap->get_or_insert (return_stmt);
- argsloc.locvec.safe_push (DECL_SOURCE_LOCATION (baseaddr));
- return true;
- }
-
- if (!POINTER_TYPE_P (TREE_TYPE (exp)))
- return false;
-
- if (TREE_CODE (exp) == SSA_NAME)
- {
- gimple *def_stmt = SSA_NAME_DEF_STMT (exp);
- enum gimple_code code = gimple_code (def_stmt);
-
- if (is_gimple_assign (def_stmt))
- {
- tree type = TREE_TYPE (gimple_assign_lhs (def_stmt));
- if (POINTER_TYPE_P (type))
- {
- tree_code code = gimple_assign_rhs_code (def_stmt);
- tree ptr1 = NULL_TREE, ptr2 = NULL_TREE;
-
- /* Set to the number of arguments examined that should
- be added to ARGSLOC->NARGS to identify expressions
- only some but not all of whose operands refer to local
- addresses. */
- unsigned nargs = 0;
- if (code == COND_EXPR)
- {
- ptr1 = gimple_assign_rhs2 (def_stmt);
- ptr2 = gimple_assign_rhs3 (def_stmt);
- nargs = 2;
- }
- else if (code == MAX_EXPR || code == MIN_EXPR)
- {
- ptr1 = gimple_assign_rhs1 (def_stmt);
- ptr2 = gimple_assign_rhs2 (def_stmt);
- nargs = 2;
- }
- else if (code == ADDR_EXPR
- || code == NOP_EXPR
- || code == POINTER_PLUS_EXPR)
- /* Leave NARGS at zero and let the recursive call set it. */
- ptr1 = gimple_assign_rhs1 (def_stmt);
-
- /* Avoid short-circuiting the logical OR result in case
- both operands refer to local variables, in which case
- both should be considered and identified in the warning. */
- bool res1 = false, res2 = false;
- if (ptr1)
- res1 = is_addr_local (return_stmt, ptr1, plocmap, visited);
- if (ptr2)
- res2 = is_addr_local (return_stmt, ptr2, plocmap, visited);
-
- if (nargs)
- if (args_loc_t *argsloc = plocmap->get (return_stmt))
- argsloc->nargs += nargs;
-
- return res1 || res2;
- }
- return false;
- }
-
- if (code == GIMPLE_CALL
- && gimple_call_builtin_p (def_stmt, BUILT_IN_NORMAL))
- {
- /* Handle alloca and friends that return pointers to automatic
- storage. */
- tree fn = gimple_call_fndecl (def_stmt);
- int code = DECL_FUNCTION_CODE (fn);
- if (code == BUILT_IN_ALLOCA
- || code == BUILT_IN_ALLOCA_WITH_ALIGN
- || code == BUILT_IN_ALLOCA_WITH_ALIGN_AND_MAX)
- {
- args_loc_t &argsloc = plocmap->get_or_insert (return_stmt);
- argsloc.locvec.safe_push (gimple_location (def_stmt));
- return true;
- }
-
- if (gimple_call_num_args (def_stmt) < 1)
- return false;
-
- /* Recursively examine the first argument of calls to built-ins
- that return it. */
- switch (code)
- {
- case BUILT_IN_MEMCPY:
- case BUILT_IN_MEMCPY_CHK:
- case BUILT_IN_MEMPCPY:
- case BUILT_IN_MEMPCPY_CHK:
- case BUILT_IN_MEMMOVE:
- case BUILT_IN_MEMMOVE_CHK:
- case BUILT_IN_STPCPY:
- case BUILT_IN_STPCPY_CHK:
- case BUILT_IN_STPNCPY:
- case BUILT_IN_STPNCPY_CHK:
- case BUILT_IN_STRCAT:
- case BUILT_IN_STRCAT_CHK:
- case BUILT_IN_STRCHR:
- case BUILT_IN_STRCPY:
- case BUILT_IN_STRCPY_CHK:
- case BUILT_IN_STRNCAT:
- case BUILT_IN_STRNCAT_CHK:
- case BUILT_IN_STRNCPY:
- case BUILT_IN_STRNCPY_CHK:
- case BUILT_IN_STRRCHR:
- case BUILT_IN_STRSTR:
- return is_addr_local (return_stmt,
- gimple_call_arg (def_stmt, 0),
- plocmap, visited);
- default:
- return false;
- }
- }
-
- if (code == GIMPLE_PHI && visited)
- {
- gphi *phi_stmt = as_a <gphi *> (def_stmt);
- if (visited->add (phi_stmt))
- return false;
-
- unsigned count = 0;
- unsigned nargs = gimple_phi_num_args (phi_stmt);
- args_loc_t &argsloc = plocmap->get_or_insert (return_stmt);
- /* Bump up the number of operands examined by the number of
- operands of this PHI. */
- argsloc.nargs += nargs;
- for (unsigned i = 0; i < gimple_phi_num_args (phi_stmt); ++i)
- {
- tree arg = gimple_phi_arg_def (phi_stmt, i);
- if (is_addr_local (return_stmt, arg, plocmap, visited))
- ++count;
- }
- return count != 0;
- }
- }
-
- return false;
-}
-
-/* Detect returning the address of a local variable in a PHI result LHS
- and argument ARG and PHI edge E in basic block BB. Add an entry for
- each use to LOCMAP, setting its NARGS member to the NARGS argument
- (the number of PHI operands) plus the number of arguments in binary
- expressions refereced by ARG. Call isolate_path for each returned
- address and set *ISOLATED to true if called.
- Return either DUPLICATE or the most recent result of isolate_path. */
-
-static basic_block
-handle_return_addr_local_phi_arg (basic_block bb, basic_block duplicate,
- tree lhs, tree arg, edge e, locmap_t &locmap,
- unsigned nargs, bool *isolated)
-{
- /* Use (gimple*)-1 as a temporary placeholder and replace it with
- the return statement below once it is known. Using a null doesn't
- work because it's used by the hash_map to mean "no-entry." Pass
- null instead of a visited_phis bitmap to avoid descending into
- PHIs since they are being processed by the caller. Those that
- remain will be checked again later. */
- if (!is_addr_local ((gimple*)-1, arg, &locmap, NULL))
- {
- /* Remove the placeholder regardless of success or failure. */
- locmap.remove ((gimple*)-1);
- return duplicate;
- }
-
- const args_loc_t* const placeargsloc = locmap.get ((gimple*)-1);
- const unsigned nlocs = placeargsloc->locvec.length ();
- gcc_assert (nlocs);
-
- /* Add to the number of PHI arguments determined by the caller
- the number of operands of the expressions referenced by ARG.
- This lets the caller determine whether it's dealing with
- a "may return" or "definitely returns." */
- nargs += placeargsloc->nargs;
-
- /* Set to true if any expressions referenced by ARG involve
- multiple addresses only some of which are those of locals. */
- bool maybe = placeargsloc->nargs > placeargsloc->locvec.length ();
-
- gimple *use_stmt;
- imm_use_iterator iter;
-
- /* Look for uses of the PHI result LHS in return statements. */
- FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs)
- {
- greturn *return_stmt = dyn_cast <greturn *> (use_stmt);
- if (!return_stmt)
- continue;
-
- if (gimple_return_retval (return_stmt) != lhs)
- continue;
-
- /* Add an entry for the return statement and the locations
- oof the PHI arguments obtained above to the map. */
- args_loc_t &argsloc = locmap.get_or_insert (use_stmt);
- argsloc.nargs = nargs;
- unsigned nelts = argsloc.locvec.length () + nlocs;
- argsloc.locvec.reserve (nelts);
- argsloc.locvec.splice (placeargsloc->locvec);
-
- if (!maybe
- && (flag_isolate_erroneous_paths_dereference
- || flag_isolate_erroneous_paths_attribute)
- && gimple_bb (use_stmt) == bb)
- {
- duplicate = isolate_path (bb, duplicate, e,
- use_stmt, lhs, true);
-
- /* Let caller know the path has been isolated. */
- *isolated = true;
- }
- }
-
- locmap.remove ((gimple*)-1);
-
- return duplicate;
-}
-
-/* Look for PHI nodes which feed statements in the same block where
- the value of the PHI node implies the statement is erroneous.
-
- For example, a NULL PHI arg value which then feeds a pointer
- dereference.
-
- When found isolate and optimize the path associated with the PHI
- argument feeding the erroneous statement. */
-static void
-find_implicit_erroneous_behavior (void)
-{
- locmap_t locmap;
-
- basic_block bb;
-
- FOR_EACH_BB_FN (bb, cfun)
- {
- gphi_iterator si;
-
- /* Out of an abundance of caution, do not isolate paths to a
- block where the block has any abnormal outgoing edges.
-
- We might be able to relax this in the future. We have to detect
- when we have to split the block with the NULL dereference and
- the trap we insert. We have to preserve abnormal edges out
- of the isolated block which in turn means updating PHIs at
- the targets of those abnormal outgoing edges. */
- if (has_abnormal_or_eh_outgoing_edge_p (bb))
- continue;
-
-
- /* If BB has an edge to itself, then duplication of BB below
- could result in reallocation of BB's PHI nodes. If that happens
- then the loop below over the PHIs would use the old PHI and
- thus invalid information. We don't have a good way to know
- if a PHI has been reallocated, so just avoid isolation in
- this case. */
- if (find_edge (bb, bb))
- continue;
-
- /* First look for a PHI which sets a pointer to NULL and which
- is then dereferenced within BB. This is somewhat overly
- conservative, but probably catches most of the interesting
- cases. */
- for (si = gsi_start_phis (bb); !gsi_end_p (si); gsi_next (&si))
- {
- gphi *phi = si.phi ();
- tree lhs = gimple_phi_result (phi);
-
- /* Initial number of PHI arguments. The result may change
- from one iteration of the loop below to the next in
- response to changes to the CFG but only the initial
- value is stored below for use by diagnostics. */
- unsigned nargs = gimple_phi_num_args (phi);
-
- /* PHI produces a pointer result. See if any of the PHI's
- arguments are NULL.
-
- When we remove an edge, we want to reprocess the current
- index since the argument at that index will have been
- removed, hence the ugly way we update I for each iteration. */
- basic_block duplicate = NULL;
- for (unsigned i = 0, next_i = 0;
- i < gimple_phi_num_args (phi); i = next_i)
- {
- tree arg = gimple_phi_arg_def (phi, i);
- edge e = gimple_phi_arg_edge (phi, i);
-
- /* Advance the argument index unless a path involving
- the current argument has been isolated. */
- next_i = i + 1;
- bool isolated = false;
- duplicate = handle_return_addr_local_phi_arg (bb, duplicate, lhs,
- arg, e, locmap,
- nargs, &isolated);
- if (isolated)
- {
- cfg_altered = true;
- next_i = i;
- }
-
- if (!integer_zerop (arg))
- continue;
-
- location_t phi_arg_loc = gimple_phi_arg_location (phi, i);
-
- imm_use_iterator iter;
- gimple *use_stmt;
-
- /* We've got a NULL PHI argument. Now see if the
- PHI's result is dereferenced within BB. */
- FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs)
- {
- /* We only care about uses in BB. Catching cases in
- in other blocks would require more complex path
- isolation code. */
- if (gimple_bb (use_stmt) != bb)
- continue;
-
- location_t loc = gimple_location (use_stmt)
- ? gimple_location (use_stmt)
- : phi_arg_loc;
-
- if (stmt_uses_name_in_undefined_way (use_stmt, lhs, loc))
- {
- duplicate = isolate_path (bb, duplicate, e,
- use_stmt, lhs, false);
-
- /* When we remove an incoming edge, we need to
- reprocess the Ith element. */
- next_i = i;
- cfg_altered = true;
- }
- }
- }
- }
- }
-
- diag_returned_locals (false, locmap);
-}
-
-/* Detect and diagnose returning the address of a local variable
- in RETURN_STMT in basic block BB. This only becomes undefined
- behavior if the result is used, so we do not insert a trap and
- only return NULL instead. */
-
-static void
-warn_return_addr_local (basic_block bb, greturn *return_stmt)
-{
- tree val = gimple_return_retval (return_stmt);
- if (!val)
- return;
-
- locmap_t locmap;
- hash_set<gphi *> visited_phis;
- if (!is_addr_local (return_stmt, val, &locmap, &visited_phis))
- return;
-
- /* We only need it for this particular case. */
- calculate_dominance_info (CDI_POST_DOMINATORS);
-
- const args_loc_t *argsloc = locmap.get (return_stmt);
- gcc_assert (argsloc);
-
- bool maybe = argsloc->nargs > argsloc->locvec.length ();
- if (!maybe)
- maybe = !dominated_by_p (CDI_POST_DOMINATORS,
- single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun)), bb);
-
- diag_returned_locals (maybe, locmap);
-
- /* Bail if the statement isn't certain to return the address
- of a local (e.g., if it involves a conditional expression
- that wasn't trasnformed into a PHI or if it involves
- a MAX_EXPR or MIN_EXPR only one of whose operands is a local
- (even though such an expression isn't valid in C or has
- defined semantics in C++). */
- if (maybe)
- return;
-
- /* Do not modify code if the user only asked for warnings. */
- if (flag_isolate_erroneous_paths_dereference
- || flag_isolate_erroneous_paths_attribute)
- {
- tree zero = build_zero_cst (TREE_TYPE (val));
- gimple_return_set_retval (return_stmt, zero);
- update_stmt (return_stmt);
- }
-}
-
-/* Look for statements which exhibit erroneous behavior. For example
- a NULL pointer dereference.
-
- When found, optimize the block containing the erroneous behavior. */
-static void
-find_explicit_erroneous_behavior (void)
-{
- basic_block bb;
-
- FOR_EACH_BB_FN (bb, cfun)
- {
- gimple_stmt_iterator si;
-
- /* Out of an abundance of caution, do not isolate paths to a
- block where the block has any abnormal outgoing edges.
-
- We might be able to relax this in the future. We have to detect
- when we have to split the block with the NULL dereference and
- the trap we insert. We have to preserve abnormal edges out
- of the isolated block which in turn means updating PHIs at
- the targets of those abnormal outgoing edges. */
- if (has_abnormal_or_eh_outgoing_edge_p (bb))
- continue;
-
- /* Now look at the statements in the block and see if any of
- them explicitly dereference a NULL pointer. This happens
- because of jump threading and constant propagation. */
- for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si))
- {
- gimple *stmt = gsi_stmt (si);
-
- if (stmt_uses_0_or_null_in_undefined_way (stmt))
- {
- insert_trap (&si, null_pointer_node);
- bb = gimple_bb (gsi_stmt (si));
-
- /* Ignore any more operands on this statement and
- continue the statement iterator (which should
- terminate its loop immediately. */
- cfg_altered = true;
- break;
- }
-
- /* Look for a return statement that returns the address
- of a local variable or the result of alloca. */
- if (greturn *return_stmt = dyn_cast <greturn *> (stmt))
- warn_return_addr_local (bb, return_stmt);
- }
- }
-}
-
-/* Search the function for statements which, if executed, would cause
- the program to fault such as a dereference of a NULL pointer.
-
- Such a program can't be valid if such a statement was to execute
- according to ISO standards.
-
- We detect explicit NULL pointer dereferences as well as those implied
- by a PHI argument having a NULL value which unconditionally flows into
- a dereference in the same block as the PHI.
-
- In the former case we replace the offending statement with an
- unconditional trap and eliminate the outgoing edges from the statement's
- basic block. This may expose secondary optimization opportunities.
-
- In the latter case, we isolate the path(s) with the NULL PHI
- feeding the dereference. We can then replace the offending statement
- and eliminate the outgoing edges in the duplicate. Again, this may
- expose secondary optimization opportunities.
-
- A warning for both cases may be advisable as well.
-
- Other statically detectable violations of the ISO standard could be
- handled in a similar way, such as out-of-bounds array indexing. */
-
-static unsigned int
-gimple_ssa_isolate_erroneous_paths (void)
-{
- initialize_original_copy_tables ();
-
- /* Search all the blocks for edges which, if traversed, will
- result in undefined behavior. */
- cfg_altered = false;
-
- /* First handle cases where traversal of a particular edge
- triggers undefined behavior. These cases require creating
- duplicate blocks and thus new SSA_NAMEs.
-
- We want that process complete prior to the phase where we start
- removing edges from the CFG. Edge removal may ultimately result in
- removal of PHI nodes and thus releasing SSA_NAMEs back to the
- name manager.
-
- If the two processes run in parallel we could release an SSA_NAME
- back to the manager but we could still have dangling references
- to the released SSA_NAME in unreachable blocks.
- that any released names not have dangling references in the IL. */
- find_implicit_erroneous_behavior ();
- find_explicit_erroneous_behavior ();
-
- free_original_copy_tables ();
-
- /* We scramble the CFG and loop structures a bit, clean up
- appropriately. We really should incrementally update the
- loop structures, in theory it shouldn't be that hard. */
- free_dominance_info (CDI_POST_DOMINATORS);
- if (cfg_altered)
- {
- free_dominance_info (CDI_DOMINATORS);
- loops_state_set (LOOPS_NEED_FIXUP);
- return TODO_cleanup_cfg | TODO_update_ssa;
- }
- return 0;
-}
-
-namespace {
-const pass_data pass_data_isolate_erroneous_paths =
-{
- GIMPLE_PASS, /* type */
- "isolate-paths", /* name */
- OPTGROUP_NONE, /* optinfo_flags */
- TV_ISOLATE_ERRONEOUS_PATHS, /* tv_id */
- ( PROP_cfg | PROP_ssa ), /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0, /* todo_flags_finish */
-};
-
-class pass_isolate_erroneous_paths : public gimple_opt_pass
-{
-public:
- pass_isolate_erroneous_paths (gcc::context *ctxt)
- : gimple_opt_pass (pass_data_isolate_erroneous_paths, ctxt)
- {}
-
- /* opt_pass methods: */
- opt_pass * clone () { return new pass_isolate_erroneous_paths (m_ctxt); }
- virtual bool gate (function *)
- {
- /* If we do not have a suitable builtin function for the trap statement,
- then do not perform the optimization. */
- return (flag_isolate_erroneous_paths_dereference != 0
- || flag_isolate_erroneous_paths_attribute != 0
- || warn_null_dereference);
- }
-
- virtual unsigned int execute (function *)
- {
- return gimple_ssa_isolate_erroneous_paths ();
- }
-
-}; // class pass_isolate_erroneous_paths
-}
-
-gimple_opt_pass *
-make_pass_isolate_erroneous_paths (gcc::context *ctxt)
-{
- return new pass_isolate_erroneous_paths (ctxt);
-}
generated by cgit v1.1 at 2025-08-20 01:53:21 +0000