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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-loop-unswitch.c
parent490e23032baaece71f2ec09fa1805064b150fbc2 (diff)
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Rename .c files to .cc files.
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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/pru/pru.cc: ...here. * config/riscv/riscv-builtins.c: Moved to... * config/riscv/riscv-builtins.cc: ...here. * config/riscv/riscv-c.c: Moved to... * config/riscv/riscv-c.cc: ...here. * config/riscv/riscv-d.c: Moved to... * config/riscv/riscv-d.cc: ...here. * config/riscv/riscv-shorten-memrefs.c: Moved to... * config/riscv/riscv-shorten-memrefs.cc: ...here. * config/riscv/riscv-sr.c: Moved to... * config/riscv/riscv-sr.cc: ...here. * config/riscv/riscv.c: Moved to... * config/riscv/riscv.cc: ...here. * config/rl78/rl78-c.c: Moved to... * config/rl78/rl78-c.cc: ...here. * config/rl78/rl78.c: Moved to... * config/rl78/rl78.cc: ...here. * config/rs6000/driver-rs6000.c: Moved to... * config/rs6000/driver-rs6000.cc: ...here. * config/rs6000/host-darwin.c: Moved to... * config/rs6000/host-darwin.cc: ...here. * config/rs6000/host-ppc64-darwin.c: Moved to... * config/rs6000/host-ppc64-darwin.cc: ...here. * config/rs6000/rbtree.c: Moved to... * config/rs6000/rbtree.cc: ...here. * config/rs6000/rs6000-c.c: Moved to... * config/rs6000/rs6000-c.cc: ...here. * config/rs6000/rs6000-call.c: Moved to... * config/rs6000/rs6000-call.cc: ...here. * config/rs6000/rs6000-d.c: Moved to... * config/rs6000/rs6000-d.cc: ...here. * config/rs6000/rs6000-gen-builtins.c: Moved to... * config/rs6000/rs6000-gen-builtins.cc: ...here. * config/rs6000/rs6000-linux.c: Moved to... * config/rs6000/rs6000-linux.cc: ...here. * config/rs6000/rs6000-logue.c: Moved to... * config/rs6000/rs6000-logue.cc: ...here. * config/rs6000/rs6000-p8swap.c: Moved to... * config/rs6000/rs6000-p8swap.cc: ...here. * config/rs6000/rs6000-pcrel-opt.c: Moved to... * config/rs6000/rs6000-pcrel-opt.cc: ...here. * config/rs6000/rs6000-string.c: Moved to... * config/rs6000/rs6000-string.cc: ...here. * config/rs6000/rs6000.c: Moved to... * config/rs6000/rs6000.cc: ...here. * config/rx/rx.c: Moved to... * config/rx/rx.cc: ...here. * config/s390/driver-native.c: Moved to... * config/s390/driver-native.cc: ...here. * config/s390/s390-c.c: Moved to... * config/s390/s390-c.cc: ...here. * config/s390/s390-d.c: Moved to... * config/s390/s390-d.cc: ...here. * config/s390/s390.c: Moved to... * config/s390/s390.cc: ...here. * config/sh/divtab-sh4-300.c: Moved to... * config/sh/divtab-sh4-300.cc: ...here. * config/sh/divtab-sh4.c: Moved to... * config/sh/divtab-sh4.cc: ...here. * config/sh/divtab.c: Moved to... * config/sh/divtab.cc: ...here. * config/sh/sh-c.c: Moved to... * config/sh/sh-c.cc: ...here. * config/sh/sh.c: Moved to... * config/sh/sh.cc: ...here. * config/sol2-c.c: Moved to... * config/sol2-c.cc: ...here. * config/sol2-cxx.c: Moved to... * config/sol2-cxx.cc: ...here. * config/sol2-d.c: Moved to... * config/sol2-d.cc: ...here. * config/sol2-stubs.c: Moved to... * config/sol2-stubs.cc: ...here. * config/sol2.c: Moved to... * config/sol2.cc: ...here. * config/sparc/driver-sparc.c: Moved to... * config/sparc/driver-sparc.cc: ...here. * config/sparc/sparc-c.c: Moved to... * config/sparc/sparc-c.cc: ...here. * config/sparc/sparc-d.c: Moved to... * config/sparc/sparc-d.cc: ...here. * config/sparc/sparc.c: Moved to... * config/sparc/sparc.cc: ...here. * config/stormy16/stormy16.c: Moved to... * config/stormy16/stormy16.cc: ...here. * config/tilegx/mul-tables.c: Moved to... * config/tilegx/mul-tables.cc: ...here. * config/tilegx/tilegx-c.c: Moved to... * config/tilegx/tilegx-c.cc: ...here. * config/tilegx/tilegx.c: Moved to... * config/tilegx/tilegx.cc: ...here. * config/tilepro/mul-tables.c: Moved to... * config/tilepro/mul-tables.cc: ...here. * config/tilepro/tilepro-c.c: Moved to... * config/tilepro/tilepro-c.cc: ...here. * config/tilepro/tilepro.c: Moved to... * config/tilepro/tilepro.cc: ...here. * config/v850/v850-c.c: Moved to... * config/v850/v850-c.cc: ...here. * config/v850/v850.c: Moved to... * config/v850/v850.cc: ...here. * config/vax/vax.c: Moved to... * config/vax/vax.cc: ...here. * config/visium/visium.c: Moved to... * config/visium/visium.cc: ...here. * config/vms/vms-c.c: Moved to... * config/vms/vms-c.cc: ...here. * config/vms/vms-f.c: Moved to... * config/vms/vms-f.cc: ...here. * config/vms/vms.c: Moved to... * config/vms/vms.cc: ...here. * config/vxworks-c.c: Moved to... * config/vxworks-c.cc: ...here. * config/vxworks.c: Moved to... * config/vxworks.cc: ...here. * config/winnt-c.c: Moved to... * config/winnt-c.cc: ...here. * config/xtensa/xtensa.c: Moved to... * config/xtensa/xtensa.cc: ...here. * context.c: Moved to... * context.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * coverage.c: Moved to... * coverage.cc: ...here. * cppbuiltin.c: Moved to... * cppbuiltin.cc: ...here. * cppdefault.c: Moved to... * cppdefault.cc: ...here. * cprop.c: Moved to... * cprop.cc: ...here. * cse.c: Moved to... * cse.cc: ...here. * cselib.c: Moved to... * cselib.cc: ...here. * ctfc.c: Moved to... * ctfc.cc: ...here. * ctfout.c: Moved to... * ctfout.cc: ...here. * data-streamer-in.c: Moved to... * data-streamer-in.cc: ...here. * data-streamer-out.c: Moved to... * data-streamer-out.cc: ...here. * data-streamer.c: Moved to... * data-streamer.cc: ...here. * dbgcnt.c: Moved to... * dbgcnt.cc: ...here. * dbxout.c: Moved to... * dbxout.cc: ...here. * dce.c: Moved to... * dce.cc: ...here. * ddg.c: Moved to... * ddg.cc: ...here. * debug.c: Moved to... * debug.cc: ...here. * df-core.c: Moved to... * df-core.cc: ...here. * df-problems.c: Moved to... * df-problems.cc: ...here. * df-scan.c: Moved to... * df-scan.cc: ...here. * dfp.c: Moved to... * dfp.cc: ...here. * diagnostic-color.c: Moved to... * diagnostic-color.cc: ...here. * diagnostic-show-locus.c: Moved to... * diagnostic-show-locus.cc: ...here. * diagnostic-spec.c: Moved to... * diagnostic-spec.cc: ...here. * diagnostic.c: Moved to... * diagnostic.cc: ...here. * dojump.c: Moved to... * dojump.cc: ...here. * dominance.c: Moved to... * dominance.cc: ...here. * domwalk.c: Moved to... * domwalk.cc: ...here. * double-int.c: Moved to... * double-int.cc: ...here. * dse.c: Moved to... * dse.cc: ...here. * dumpfile.c: Moved to... * dumpfile.cc: ...here. * dwarf2asm.c: Moved to... * dwarf2asm.cc: ...here. * dwarf2cfi.c: Moved to... * dwarf2cfi.cc: ...here. * dwarf2ctf.c: Moved to... * dwarf2ctf.cc: ...here. * dwarf2out.c: Moved to... * dwarf2out.cc: ...here. * early-remat.c: Moved to... * early-remat.cc: ...here. * edit-context.c: Moved to... * edit-context.cc: ...here. * emit-rtl.c: Moved to... * emit-rtl.cc: ...here. * errors.c: Moved to... * errors.cc: ...here. * et-forest.c: Moved to... * et-forest.cc: ...here. * except.c: Moved to... * except.cc: ...here. * explow.c: Moved to... * explow.cc: ...here. * expmed.c: Moved to... * expmed.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * fibonacci_heap.c: Moved to... * fibonacci_heap.cc: ...here. * file-find.c: Moved to... * file-find.cc: ...here. * file-prefix-map.c: Moved to... * file-prefix-map.cc: ...here. * final.c: Moved to... * final.cc: ...here. * fixed-value.c: Moved to... * fixed-value.cc: ...here. * fold-const-call.c: Moved to... * fold-const-call.cc: ...here. * fold-const.c: Moved to... * fold-const.cc: ...here. * fp-test.c: Moved to... * fp-test.cc: ...here. * function-tests.c: Moved to... * function-tests.cc: ...here. * function.c: Moved to... * function.cc: ...here. * fwprop.c: Moved to... * fwprop.cc: ...here. * gcc-ar.c: Moved to... * gcc-ar.cc: ...here. * gcc-main.c: Moved to... * gcc-main.cc: ...here. * gcc-rich-location.c: Moved to... * gcc-rich-location.cc: ...here. * gcc.c: Moved to... * gcc.cc: ...here. * gcov-dump.c: Moved to... * gcov-dump.cc: ...here. * gcov-io.c: Moved to... * gcov-io.cc: ...here. * gcov-tool.c: Moved to... * gcov-tool.cc: ...here. * gcov.c: Moved to... * gcov.cc: ...here. * gcse-common.c: Moved to... * gcse-common.cc: ...here. * gcse.c: Moved to... * gcse.cc: ...here. * genattr-common.c: Moved to... * genattr-common.cc: ...here. * genattr.c: Moved to... * genattr.cc: ...here. * genattrtab.c: Moved to... * genattrtab.cc: ...here. * genautomata.c: Moved to... * genautomata.cc: ...here. * gencfn-macros.c: Moved to... * gencfn-macros.cc: ...here. * gencheck.c: Moved to... * gencheck.cc: ...here. * genchecksum.c: Moved to... * genchecksum.cc: ...here. * gencodes.c: Moved to... * gencodes.cc: ...here. * genconditions.c: Moved to... * genconditions.cc: ...here. * genconfig.c: Moved to... * genconfig.cc: ...here. * genconstants.c: Moved to... * genconstants.cc: ...here. * genemit.c: Moved to... * genemit.cc: ...here. * genenums.c: Moved to... * genenums.cc: ...here. * generic-match-head.c: Moved to... * generic-match-head.cc: ...here. * genextract.c: Moved to... * genextract.cc: ...here. * genflags.c: Moved to... * genflags.cc: ...here. * gengenrtl.c: Moved to... * gengenrtl.cc: ...here. * gengtype-parse.c: Moved to... * gengtype-parse.cc: ...here. * gengtype-state.c: Moved to... * gengtype-state.cc: ...here. * gengtype.c: Moved to... * gengtype.cc: ...here. * genhooks.c: Moved to... * genhooks.cc: ...here. * genmatch.c: Moved to... * genmatch.cc: ...here. * genmddeps.c: Moved to... * genmddeps.cc: ...here. * genmddump.c: Moved to... * genmddump.cc: ...here. * genmodes.c: Moved to... * genmodes.cc: ...here. * genopinit.c: Moved to... * genopinit.cc: ...here. * genoutput.c: Moved to... * genoutput.cc: ...here. * genpeep.c: Moved to... * genpeep.cc: ...here. * genpreds.c: Moved to... * genpreds.cc: ...here. * genrecog.c: Moved to... * genrecog.cc: ...here. * gensupport.c: Moved to... * gensupport.cc: ...here. * gentarget-def.c: Moved to... * gentarget-def.cc: ...here. * genversion.c: Moved to... * genversion.cc: ...here. * ggc-common.c: Moved to... * ggc-common.cc: ...here. * ggc-none.c: Moved to... * ggc-none.cc: ...here. * ggc-page.c: Moved to... * ggc-page.cc: ...here. * ggc-tests.c: Moved to... * ggc-tests.cc: ...here. * gimple-builder.c: Moved to... * gimple-builder.cc: ...here. * gimple-expr.c: Moved to... * gimple-expr.cc: ...here. * gimple-fold.c: Moved to... * gimple-fold.cc: ...here. * gimple-iterator.c: Moved to... * gimple-iterator.cc: ...here. * gimple-laddress.c: Moved to... * gimple-laddress.cc: ...here. * gimple-loop-jam.c: Moved to... * gimple-loop-jam.cc: ...here. * gimple-low.c: Moved to... * gimple-low.cc: ...here. * gimple-match-head.c: Moved to... * gimple-match-head.cc: ...here. * gimple-pretty-print.c: Moved to... * gimple-pretty-print.cc: ...here. * gimple-ssa-backprop.c: Moved to... * gimple-ssa-backprop.cc: ...here. * gimple-ssa-evrp-analyze.c: Moved to... * gimple-ssa-evrp-analyze.cc: ...here. * gimple-ssa-evrp.c: Moved to... * gimple-ssa-evrp.cc: ...here. * gimple-ssa-isolate-paths.c: Moved to... * gimple-ssa-isolate-paths.cc: ...here. * gimple-ssa-nonnull-compare.c: Moved to... * gimple-ssa-nonnull-compare.cc: ...here. * gimple-ssa-split-paths.c: Moved to... * gimple-ssa-split-paths.cc: ...here. * gimple-ssa-sprintf.c: Moved to... * gimple-ssa-sprintf.cc: ...here. * gimple-ssa-store-merging.c: Moved to... * gimple-ssa-store-merging.cc: ...here. * gimple-ssa-strength-reduction.c: Moved to... * gimple-ssa-strength-reduction.cc: ...here. * gimple-ssa-warn-alloca.c: Moved to... * gimple-ssa-warn-alloca.cc: ...here. * gimple-ssa-warn-restrict.c: Moved to... * gimple-ssa-warn-restrict.cc: ...here. * gimple-streamer-in.c: Moved to... * gimple-streamer-in.cc: ...here. * gimple-streamer-out.c: Moved to... * gimple-streamer-out.cc: ...here. * gimple-walk.c: Moved to... * gimple-walk.cc: ...here. * gimple-warn-recursion.c: Moved to... * gimple-warn-recursion.cc: ...here. * gimple.c: Moved to... * gimple.cc: ...here. * gimplify-me.c: Moved to... * gimplify-me.cc: ...here. * gimplify.c: Moved to... * gimplify.cc: ...here. * godump.c: Moved to... * godump.cc: ...here. * graph.c: Moved to... * graph.cc: ...here. * graphds.c: Moved to... * graphds.cc: ...here. * graphite-dependences.c: Moved to... * graphite-dependences.cc: ...here. * graphite-isl-ast-to-gimple.c: Moved to... * graphite-isl-ast-to-gimple.cc: ...here. * graphite-optimize-isl.c: Moved to... * graphite-optimize-isl.cc: ...here. * graphite-poly.c: Moved to... * graphite-poly.cc: ...here. * graphite-scop-detection.c: Moved to... * graphite-scop-detection.cc: ...here. * graphite-sese-to-poly.c: Moved to... * graphite-sese-to-poly.cc: ...here. * graphite.c: Moved to... * graphite.cc: ...here. * haifa-sched.c: Moved to... * haifa-sched.cc: ...here. * hash-map-tests.c: Moved to... * hash-map-tests.cc: ...here. * hash-set-tests.c: Moved to... * hash-set-tests.cc: ...here. * hash-table.c: Moved to... * hash-table.cc: ...here. * hooks.c: Moved to... * hooks.cc: ...here. * host-default.c: Moved to... * host-default.cc: ...here. * hw-doloop.c: Moved to... * hw-doloop.cc: ...here. * hwint.c: Moved to... * hwint.cc: ...here. * ifcvt.c: Moved to... * ifcvt.cc: ...here. * inchash.c: Moved to... * inchash.cc: ...here. * incpath.c: Moved to... * incpath.cc: ...here. * init-regs.c: Moved to... * init-regs.cc: ...here. * input.c: Moved to... * input.cc: ...here. * internal-fn.c: Moved to... * internal-fn.cc: ...here. * intl.c: Moved to... * intl.cc: ...here. * ipa-comdats.c: Moved to... * ipa-comdats.cc: ...here. * ipa-cp.c: Moved to... * ipa-cp.cc: ...here. * ipa-devirt.c: Moved to... * ipa-devirt.cc: ...here. * ipa-fnsummary.c: Moved to... * ipa-fnsummary.cc: ...here. * ipa-icf-gimple.c: Moved to... * ipa-icf-gimple.cc: ...here. * ipa-icf.c: Moved to... * ipa-icf.cc: ...here. * ipa-inline-analysis.c: Moved to... * ipa-inline-analysis.cc: ...here. * ipa-inline-transform.c: Moved to... * ipa-inline-transform.cc: ...here. * ipa-inline.c: Moved to... * ipa-inline.cc: ...here. * ipa-modref-tree.c: Moved to... * ipa-modref-tree.cc: ...here. * ipa-modref.c: Moved to... * ipa-modref.cc: ...here. * ipa-param-manipulation.c: Moved to... * ipa-param-manipulation.cc: ...here. * ipa-polymorphic-call.c: Moved to... * ipa-polymorphic-call.cc: ...here. * ipa-predicate.c: Moved to... * ipa-predicate.cc: ...here. * ipa-profile.c: Moved to... * ipa-profile.cc: ...here. * ipa-prop.c: Moved to... * ipa-prop.cc: ...here. * ipa-pure-const.c: Moved to... * ipa-pure-const.cc: ...here. * ipa-ref.c: Moved to... * ipa-ref.cc: ...here. * ipa-reference.c: Moved to... * ipa-reference.cc: ...here. * ipa-split.c: Moved to... * ipa-split.cc: ...here. * ipa-sra.c: Moved to... * ipa-sra.cc: ...here. * ipa-utils.c: Moved to... * ipa-utils.cc: ...here. * ipa-visibility.c: Moved to... * ipa-visibility.cc: ...here. * ipa.c: Moved to... * ipa.cc: ...here. * ira-build.c: Moved to... * ira-build.cc: ...here. * ira-color.c: Moved to... * ira-color.cc: ...here. * ira-conflicts.c: Moved to... * ira-conflicts.cc: ...here. * ira-costs.c: Moved to... * ira-costs.cc: ...here. * ira-emit.c: Moved to... * ira-emit.cc: ...here. * ira-lives.c: Moved to... * ira-lives.cc: ...here. * ira.c: Moved to... * ira.cc: ...here. * jump.c: Moved to... * jump.cc: ...here. * langhooks.c: Moved to... * langhooks.cc: ...here. * lcm.c: Moved to... * lcm.cc: ...here. * lists.c: Moved to... * lists.cc: ...here. * loop-doloop.c: Moved to... * loop-doloop.cc: ...here. * loop-init.c: Moved to... * loop-init.cc: ...here. * loop-invariant.c: Moved to... * loop-invariant.cc: ...here. * loop-iv.c: Moved to... * loop-iv.cc: ...here. * loop-unroll.c: Moved to... * loop-unroll.cc: ...here. * lower-subreg.c: Moved to... * lower-subreg.cc: ...here. * lra-assigns.c: Moved to... * lra-assigns.cc: ...here. * lra-coalesce.c: Moved to... * lra-coalesce.cc: ...here. * lra-constraints.c: Moved to... * lra-constraints.cc: ...here. * lra-eliminations.c: Moved to... * lra-eliminations.cc: ...here. * lra-lives.c: Moved to... * lra-lives.cc: ...here. * lra-remat.c: Moved to... * lra-remat.cc: ...here. * lra-spills.c: Moved to... * lra-spills.cc: ...here. * lra.c: Moved to... * lra.cc: ...here. * lto-cgraph.c: Moved to... * lto-cgraph.cc: ...here. * lto-compress.c: Moved to... * lto-compress.cc: ...here. * lto-opts.c: Moved to... * lto-opts.cc: ...here. * lto-section-in.c: Moved to... * lto-section-in.cc: ...here. * lto-section-out.c: Moved to... * lto-section-out.cc: ...here. * lto-streamer-in.c: Moved to... * lto-streamer-in.cc: ...here. * lto-streamer-out.c: Moved to... * lto-streamer-out.cc: ...here. * lto-streamer.c: Moved to... * lto-streamer.cc: ...here. * lto-wrapper.c: Moved to... * lto-wrapper.cc: ...here. * main.c: Moved to... * main.cc: ...here. * mcf.c: Moved to... * mcf.cc: ...here. * mode-switching.c: Moved to... * mode-switching.cc: ...here. * modulo-sched.c: Moved to... * modulo-sched.cc: ...here. * multiple_target.c: Moved to... * multiple_target.cc: ...here. * omp-expand.c: Moved to... * omp-expand.cc: ...here. * omp-general.c: Moved to... * omp-general.cc: ...here. * omp-low.c: Moved to... * omp-low.cc: ...here. * omp-offload.c: Moved to... * omp-offload.cc: ...here. * omp-simd-clone.c: Moved to... * omp-simd-clone.cc: ...here. * opt-suggestions.c: Moved to... * opt-suggestions.cc: ...here. * optabs-libfuncs.c: Moved to... * optabs-libfuncs.cc: ...here. * optabs-query.c: Moved to... * optabs-query.cc: ...here. * optabs-tree.c: Moved to... * optabs-tree.cc: ...here. * optabs.c: Moved to... * optabs.cc: ...here. * opts-common.c: Moved to... * opts-common.cc: ...here. * opts-global.c: Moved to... * opts-global.cc: ...here. * opts.c: Moved to... * opts.cc: ...here. * passes.c: Moved to... * passes.cc: ...here. * plugin.c: Moved to... * plugin.cc: ...here. * postreload-gcse.c: Moved to... * postreload-gcse.cc: ...here. * postreload.c: Moved to... * postreload.cc: ...here. * predict.c: Moved to... * predict.cc: ...here. * prefix.c: Moved to... * prefix.cc: ...here. * pretty-print.c: Moved to... * pretty-print.cc: ...here. * print-rtl-function.c: Moved to... * print-rtl-function.cc: ...here. * print-rtl.c: Moved to... * print-rtl.cc: ...here. * print-tree.c: Moved to... * print-tree.cc: ...here. * profile-count.c: Moved to... * profile-count.cc: ...here. * profile.c: Moved to... * profile.cc: ...here. * read-md.c: Moved to... * read-md.cc: ...here. * read-rtl-function.c: Moved to... * read-rtl-function.cc: ...here. * read-rtl.c: Moved to... * read-rtl.cc: ...here. * real.c: Moved to... * real.cc: ...here. * realmpfr.c: Moved to... * realmpfr.cc: ...here. * recog.c: Moved to... * recog.cc: ...here. * ree.c: Moved to... * ree.cc: ...here. * reg-stack.c: Moved to... * reg-stack.cc: ...here. * regcprop.c: Moved to... * regcprop.cc: ...here. * reginfo.c: Moved to... * reginfo.cc: ...here. * regrename.c: Moved to... * regrename.cc: ...here. * regstat.c: Moved to... * regstat.cc: ...here. * reload.c: Moved to... * reload.cc: ...here. * reload1.c: Moved to... * reload1.cc: ...here. * reorg.c: Moved to... * reorg.cc: ...here. * resource.c: Moved to... * resource.cc: ...here. * rtl-error.c: Moved to... * rtl-error.cc: ...here. * rtl-tests.c: Moved to... * rtl-tests.cc: ...here. * rtl.c: Moved to... * rtl.cc: ...here. * rtlanal.c: Moved to... * rtlanal.cc: ...here. * rtlhash.c: Moved to... * rtlhash.cc: ...here. * rtlhooks.c: Moved to... * rtlhooks.cc: ...here. * rtx-vector-builder.c: Moved to... * rtx-vector-builder.cc: ...here. * run-rtl-passes.c: Moved to... * run-rtl-passes.cc: ...here. * sancov.c: Moved to... * sancov.cc: ...here. * sanopt.c: Moved to... * sanopt.cc: ...here. * sbitmap.c: Moved to... * sbitmap.cc: ...here. * sched-deps.c: Moved to... * sched-deps.cc: ...here. * sched-ebb.c: Moved to... * sched-ebb.cc: ...here. * sched-rgn.c: Moved to... * sched-rgn.cc: ...here. * sel-sched-dump.c: Moved to... * sel-sched-dump.cc: ...here. * sel-sched-ir.c: Moved to... * sel-sched-ir.cc: ...here. * sel-sched.c: Moved to... * sel-sched.cc: ...here. * selftest-diagnostic.c: Moved to... * selftest-diagnostic.cc: ...here. * selftest-rtl.c: Moved to... * selftest-rtl.cc: ...here. * selftest-run-tests.c: Moved to... * selftest-run-tests.cc: ...here. * selftest.c: Moved to... * selftest.cc: ...here. * sese.c: Moved to... * sese.cc: ...here. * shrink-wrap.c: Moved to... * shrink-wrap.cc: ...here. * simplify-rtx.c: Moved to... * simplify-rtx.cc: ...here. * sparseset.c: Moved to... * sparseset.cc: ...here. * spellcheck-tree.c: Moved to... * spellcheck-tree.cc: ...here. * spellcheck.c: Moved to... * spellcheck.cc: ...here. * sreal.c: Moved to... * sreal.cc: ...here. * stack-ptr-mod.c: Moved to... * stack-ptr-mod.cc: ...here. * statistics.c: Moved to... * statistics.cc: ...here. * stmt.c: Moved to... * stmt.cc: ...here. * stor-layout.c: Moved to... * stor-layout.cc: ...here. * store-motion.c: Moved to... * store-motion.cc: ...here. * streamer-hooks.c: Moved to... * streamer-hooks.cc: ...here. * stringpool.c: Moved to... * stringpool.cc: ...here. * substring-locations.c: Moved to... * substring-locations.cc: ...here. * symtab.c: Moved to... * symtab.cc: ...here. * target-globals.c: Moved to... * target-globals.cc: ...here. * targhooks.c: Moved to... * targhooks.cc: ...here. * timevar.c: Moved to... * timevar.cc: ...here. * toplev.c: Moved to... * toplev.cc: ...here. * tracer.c: Moved to... * tracer.cc: ...here. * trans-mem.c: Moved to... * trans-mem.cc: ...here. * tree-affine.c: Moved to... * tree-affine.cc: ...here. * tree-call-cdce.c: Moved to... * tree-call-cdce.cc: ...here. * tree-cfg.c: Moved to... * tree-cfg.cc: ...here. * tree-cfgcleanup.c: Moved to... * tree-cfgcleanup.cc: ...here. * tree-chrec.c: Moved to... * tree-chrec.cc: ...here. * tree-complex.c: Moved to... * tree-complex.cc: ...here. * tree-data-ref.c: Moved to... * tree-data-ref.cc: ...here. * tree-dfa.c: Moved to... * tree-dfa.cc: ...here. * tree-diagnostic.c: Moved to... * tree-diagnostic.cc: ...here. * tree-dump.c: Moved to... * tree-dump.cc: ...here. * tree-eh.c: Moved to... * tree-eh.cc: ...here. * tree-emutls.c: Moved to... * tree-emutls.cc: ...here. * tree-if-conv.c: Moved to... * tree-if-conv.cc: ...here. * tree-inline.c: Moved to... * tree-inline.cc: ...here. * tree-into-ssa.c: Moved to... * tree-into-ssa.cc: ...here. * tree-iterator.c: Moved to... * tree-iterator.cc: ...here. * tree-loop-distribution.c: Moved to... * tree-loop-distribution.cc: ...here. * tree-nested.c: Moved to... * tree-nested.cc: ...here. * tree-nrv.c: Moved to... * tree-nrv.cc: ...here. * tree-object-size.c: Moved to... * tree-object-size.cc: ...here. * tree-outof-ssa.c: Moved to... * tree-outof-ssa.cc: ...here. * tree-parloops.c: Moved to... * tree-parloops.cc: ...here. * tree-phinodes.c: Moved to... * tree-phinodes.cc: ...here. * tree-predcom.c: Moved to... * tree-predcom.cc: ...here. * tree-pretty-print.c: Moved to... * tree-pretty-print.cc: ...here. * tree-profile.c: Moved to... * tree-profile.cc: ...here. * tree-scalar-evolution.c: Moved to... * tree-scalar-evolution.cc: ...here. * tree-sra.c: Moved to... * tree-sra.cc: ...here. * tree-ssa-address.c: Moved to... * tree-ssa-address.cc: ...here. * tree-ssa-alias.c: Moved to... * tree-ssa-alias.cc: ...here. * tree-ssa-ccp.c: Moved to... * tree-ssa-ccp.cc: ...here. * tree-ssa-coalesce.c: Moved to... * tree-ssa-coalesce.cc: ...here. * tree-ssa-copy.c: Moved to... * tree-ssa-copy.cc: ...here. * tree-ssa-dce.c: Moved to... * tree-ssa-dce.cc: ...here. * tree-ssa-dom.c: Moved to... * tree-ssa-dom.cc: ...here. * tree-ssa-dse.c: Moved to... * tree-ssa-dse.cc: ...here. * tree-ssa-forwprop.c: Moved to... * tree-ssa-forwprop.cc: ...here. * tree-ssa-ifcombine.c: Moved to... * tree-ssa-ifcombine.cc: ...here. * tree-ssa-live.c: Moved to... * tree-ssa-live.cc: ...here. * tree-ssa-loop-ch.c: Moved to... * tree-ssa-loop-ch.cc: ...here. * tree-ssa-loop-im.c: Moved to... * tree-ssa-loop-im.cc: ...here. * tree-ssa-loop-ivcanon.c: Moved to... * tree-ssa-loop-ivcanon.cc: ...here. * tree-ssa-loop-ivopts.c: Moved to... * tree-ssa-loop-ivopts.cc: ...here. * tree-ssa-loop-manip.c: Moved to... * tree-ssa-loop-manip.cc: ...here. * tree-ssa-loop-niter.c: Moved to... * tree-ssa-loop-niter.cc: ...here. * tree-ssa-loop-prefetch.c: Moved to... * tree-ssa-loop-prefetch.cc: ...here. * tree-ssa-loop-split.c: Moved to... * tree-ssa-loop-split.cc: ...here. * tree-ssa-loop-unswitch.c: Moved to... * tree-ssa-loop-unswitch.cc: ...here. * tree-ssa-loop.c: Moved to... * tree-ssa-loop.cc: ...here. * tree-ssa-math-opts.c: Moved to... * tree-ssa-math-opts.cc: ...here. * tree-ssa-operands.c: Moved to... * tree-ssa-operands.cc: ...here. * tree-ssa-phiopt.c: Moved to... * tree-ssa-phiopt.cc: ...here. * tree-ssa-phiprop.c: Moved to... * tree-ssa-phiprop.cc: ...here. * tree-ssa-pre.c: Moved to... * tree-ssa-pre.cc: ...here. * tree-ssa-propagate.c: Moved to... * tree-ssa-propagate.cc: ...here. * tree-ssa-reassoc.c: Moved to... * tree-ssa-reassoc.cc: ...here. * tree-ssa-sccvn.c: Moved to... * tree-ssa-sccvn.cc: ...here. * tree-ssa-scopedtables.c: Moved to... * tree-ssa-scopedtables.cc: ...here. * tree-ssa-sink.c: Moved to... * tree-ssa-sink.cc: ...here. * tree-ssa-strlen.c: Moved to... * tree-ssa-strlen.cc: ...here. * tree-ssa-structalias.c: Moved to... * tree-ssa-structalias.cc: ...here. * tree-ssa-tail-merge.c: Moved to... * tree-ssa-tail-merge.cc: ...here. * tree-ssa-ter.c: Moved to... * tree-ssa-ter.cc: ...here. * tree-ssa-threadbackward.c: Moved to... * tree-ssa-threadbackward.cc: ...here. * tree-ssa-threadedge.c: Moved to... * tree-ssa-threadedge.cc: ...here. * tree-ssa-threadupdate.c: Moved to... * tree-ssa-threadupdate.cc: ...here. * tree-ssa-uncprop.c: Moved to... * tree-ssa-uncprop.cc: ...here. * tree-ssa-uninit.c: Moved to... * tree-ssa-uninit.cc: ...here. * tree-ssa.c: Moved to... * tree-ssa.cc: ...here. * tree-ssanames.c: Moved to... * tree-ssanames.cc: ...here. * tree-stdarg.c: Moved to... * tree-stdarg.cc: ...here. * tree-streamer-in.c: Moved to... * tree-streamer-in.cc: ...here. * tree-streamer-out.c: Moved to... * tree-streamer-out.cc: ...here. * tree-streamer.c: Moved to... * tree-streamer.cc: ...here. * tree-switch-conversion.c: Moved to... * tree-switch-conversion.cc: ...here. * tree-tailcall.c: Moved to... * tree-tailcall.cc: ...here. * tree-vect-data-refs.c: Moved to... * tree-vect-data-refs.cc: ...here. * tree-vect-generic.c: Moved to... * tree-vect-generic.cc: ...here. * tree-vect-loop-manip.c: Moved to... * tree-vect-loop-manip.cc: ...here. * tree-vect-loop.c: Moved to... * tree-vect-loop.cc: ...here. * tree-vect-patterns.c: Moved to... * tree-vect-patterns.cc: ...here. * tree-vect-slp-patterns.c: Moved to... * tree-vect-slp-patterns.cc: ...here. * tree-vect-slp.c: Moved to... * tree-vect-slp.cc: ...here. * tree-vect-stmts.c: Moved to... * tree-vect-stmts.cc: ...here. * tree-vector-builder.c: Moved to... * tree-vector-builder.cc: ...here. * tree-vectorizer.c: Moved to... * tree-vectorizer.cc: ...here. * tree-vrp.c: Moved to... * tree-vrp.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * tsan.c: Moved to... * tsan.cc: ...here. * typed-splay-tree.c: Moved to... * typed-splay-tree.cc: ...here. * ubsan.c: Moved to... * ubsan.cc: ...here. * valtrack.c: Moved to... * valtrack.cc: ...here. * value-prof.c: Moved to... * value-prof.cc: ...here. * var-tracking.c: Moved to... * var-tracking.cc: ...here. * varasm.c: Moved to... * varasm.cc: ...here. * varpool.c: Moved to... * varpool.cc: ...here. * vec-perm-indices.c: Moved to... * vec-perm-indices.cc: ...here. * vec.c: Moved to... * vec.cc: ...here. * vmsdbgout.c: Moved to... * vmsdbgout.cc: ...here. * vr-values.c: Moved to... * vr-values.cc: ...here. * vtable-verify.c: Moved to... * vtable-verify.cc: ...here. * web.c: Moved to... * web.cc: ...here. * xcoffout.c: Moved to... * xcoffout.cc: ...here. gcc/c-family/ChangeLog: * c-ada-spec.c: Moved to... * c-ada-spec.cc: ...here. * c-attribs.c: Moved to... * c-attribs.cc: ...here. * c-common.c: Moved to... * c-common.cc: ...here. * c-cppbuiltin.c: Moved to... * c-cppbuiltin.cc: ...here. * c-dump.c: Moved to... * c-dump.cc: ...here. * c-format.c: Moved to... * c-format.cc: ...here. * c-gimplify.c: Moved to... * c-gimplify.cc: ...here. * c-indentation.c: Moved to... * c-indentation.cc: ...here. * c-lex.c: Moved to... * c-lex.cc: ...here. * c-omp.c: Moved to... * c-omp.cc: ...here. * c-opts.c: Moved to... * c-opts.cc: ...here. * c-pch.c: Moved to... * c-pch.cc: ...here. * c-ppoutput.c: Moved to... * c-ppoutput.cc: ...here. * c-pragma.c: Moved to... * c-pragma.cc: ...here. * c-pretty-print.c: Moved to... * c-pretty-print.cc: ...here. * c-semantics.c: Moved to... * c-semantics.cc: ...here. * c-ubsan.c: Moved to... * c-ubsan.cc: ...here. * c-warn.c: Moved to... * c-warn.cc: ...here. * cppspec.c: Moved to... * cppspec.cc: ...here. * stub-objc.c: Moved to... * stub-objc.cc: ...here. gcc/c/ChangeLog: * c-aux-info.c: Moved to... * c-aux-info.cc: ...here. * c-convert.c: Moved to... * c-convert.cc: ...here. * c-decl.c: Moved to... * c-decl.cc: ...here. * c-errors.c: Moved to... * c-errors.cc: ...here. * c-fold.c: Moved to... * c-fold.cc: ...here. * c-lang.c: Moved to... * c-lang.cc: ...here. * c-objc-common.c: Moved to... * c-objc-common.cc: ...here. * c-parser.c: Moved to... * c-parser.cc: ...here. * c-typeck.c: Moved to... * c-typeck.cc: ...here. * gccspec.c: Moved to... * gccspec.cc: ...here. * gimple-parser.c: Moved to... * gimple-parser.cc: ...here. gcc/cp/ChangeLog: * call.c: Moved to... * call.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constexpr.c: Moved to... * constexpr.cc: ...here. * cp-gimplify.c: Moved to... * cp-gimplify.cc: ...here. * cp-lang.c: Moved to... * cp-lang.cc: ...here. * cp-objcp-common.c: Moved to... * cp-objcp-common.cc: ...here. * cp-ubsan.c: Moved to... * cp-ubsan.cc: ...here. * cvt.c: Moved to... * cvt.cc: ...here. * cxx-pretty-print.c: Moved to... * cxx-pretty-print.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * decl2.c: Moved to... * decl2.cc: ...here. * dump.c: Moved to... * dump.cc: ...here. * error.c: Moved to... * error.cc: ...here. * except.c: Moved to... * except.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * friend.c: Moved to... * friend.cc: ...here. * g++spec.c: Moved to... * g++spec.cc: ...here. * init.c: Moved to... * init.cc: ...here. * lambda.c: Moved to... * lambda.cc: ...here. * lex.c: Moved to... * lex.cc: ...here. * mangle.c: Moved to... * mangle.cc: ...here. * method.c: Moved to... * method.cc: ...here. * name-lookup.c: Moved to... * name-lookup.cc: ...here. * optimize.c: Moved to... * optimize.cc: ...here. * parser.c: Moved to... * parser.cc: ...here. * pt.c: Moved to... * pt.cc: ...here. * ptree.c: Moved to... * ptree.cc: ...here. * rtti.c: Moved to... * rtti.cc: ...here. * search.c: Moved to... * search.cc: ...here. * semantics.c: Moved to... * semantics.cc: ...here. * tree.c: Moved to... * tree.cc: ...here. * typeck.c: Moved to... * typeck.cc: ...here. * typeck2.c: Moved to... * typeck2.cc: ...here. * vtable-class-hierarchy.c: Moved to... * vtable-class-hierarchy.cc: ...here. gcc/fortran/ChangeLog: * arith.c: Moved to... * arith.cc: ...here. * array.c: Moved to... * array.cc: ...here. * bbt.c: Moved to... * bbt.cc: ...here. * check.c: Moved to... * check.cc: ...here. * class.c: Moved to... * class.cc: ...here. * constructor.c: Moved to... * constructor.cc: ...here. * convert.c: Moved to... * convert.cc: ...here. * cpp.c: Moved to... * cpp.cc: ...here. * data.c: Moved to... * data.cc: ...here. * decl.c: Moved to... * decl.cc: ...here. * dependency.c: Moved to... * dependency.cc: ...here. * dump-parse-tree.c: Moved to... * dump-parse-tree.cc: ...here. * error.c: Moved to... * error.cc: ...here. * expr.c: Moved to... * expr.cc: ...here. * f95-lang.c: Moved to... * f95-lang.cc: ...here. * frontend-passes.c: Moved to... * frontend-passes.cc: ...here. * gfortranspec.c: Moved to... * gfortranspec.cc: ...here. * interface.c: Moved to... * interface.cc: ...here. * intrinsic.c: Moved to... * intrinsic.cc: ...here. * io.c: Moved to... * io.cc: ...here. * iresolve.c: Moved to... * iresolve.cc: ...here. * match.c: Moved to... * match.cc: ...here. * matchexp.c: Moved to... * matchexp.cc: ...here. * misc.c: Moved to... * misc.cc: ...here. * module.c: Moved to... * module.cc: ...here. * openmp.c: Moved to... * openmp.cc: ...here. * options.c: Moved to... * options.cc: ...here. * parse.c: Moved to... * parse.cc: ...here. * primary.c: Moved to... * primary.cc: ...here. * resolve.c: Moved to... * resolve.cc: ...here. * scanner.c: Moved to... * scanner.cc: ...here. * simplify.c: Moved to... * simplify.cc: ...here. * st.c: Moved to... * st.cc: ...here. * symbol.c: Moved to... * symbol.cc: ...here. * target-memory.c: Moved to... * target-memory.cc: ...here. * trans-array.c: Moved to... * trans-array.cc: ...here. * trans-common.c: Moved to... * trans-common.cc: ...here. * trans-const.c: Moved to... * trans-const.cc: ...here. * trans-decl.c: Moved to... * trans-decl.cc: ...here. * trans-expr.c: Moved to... * trans-expr.cc: ...here. * trans-intrinsic.c: Moved to... * trans-intrinsic.cc: ...here. * trans-io.c: Moved to... * trans-io.cc: ...here. * trans-openmp.c: Moved to... * trans-openmp.cc: ...here. * trans-stmt.c: Moved to... * trans-stmt.cc: ...here. * trans-types.c: Moved to... * trans-types.cc: ...here. * trans.c: Moved to... * trans.cc: ...here. gcc/go/ChangeLog: * go-backend.c: Moved to... * go-backend.cc: ...here. * go-lang.c: Moved to... * go-lang.cc: ...here. * gospec.c: Moved to... * gospec.cc: ...here. gcc/jit/ChangeLog: * dummy-frontend.c: Moved to... * dummy-frontend.cc: ...here. * jit-builtins.c: Moved to... * jit-builtins.cc: ...here. * jit-logging.c: Moved to... * jit-logging.cc: ...here. * jit-playback.c: Moved to... * jit-playback.cc: ...here. * jit-recording.c: Moved to... * jit-recording.cc: ...here. * jit-result.c: Moved to... * jit-result.cc: ...here. * jit-spec.c: Moved to... * jit-spec.cc: ...here. * jit-tempdir.c: Moved to... * jit-tempdir.cc: ...here. * jit-w32.c: Moved to... * jit-w32.cc: ...here. * libgccjit.c: Moved to... * libgccjit.cc: ...here. gcc/lto/ChangeLog: * common.c: Moved to... * common.cc: ...here. * lto-common.c: Moved to... * 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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-loop-unswitch.c')
-rw-r--r--gcc/tree-ssa-loop-unswitch.c1042
1 files changed, 0 insertions, 1042 deletions
diff --git a/gcc/tree-ssa-loop-unswitch.c b/gcc/tree-ssa-loop-unswitch.c
deleted file mode 100644
index 46a6ff5..0000000
--- a/gcc/tree-ssa-loop-unswitch.c
+++ /dev/null
@@ -1,1042 +0,0 @@
-/* Loop unswitching.
- Copyright (C) 2004-2022 Free Software Foundation, Inc.
-
-This file is part of GCC.
-
-GCC is free software; you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 3, or (at your option) any
-later version.
-
-GCC is distributed in the hope that it will be useful, but WITHOUT
-ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING3. If not see
-<http://www.gnu.org/licenses/>. */
-
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "backend.h"
-#include "tree.h"
-#include "gimple.h"
-#include "tree-pass.h"
-#include "ssa.h"
-#include "fold-const.h"
-#include "gimplify.h"
-#include "tree-cfg.h"
-#include "tree-ssa.h"
-#include "tree-ssa-loop-niter.h"
-#include "tree-ssa-loop.h"
-#include "tree-into-ssa.h"
-#include "cfgloop.h"
-#include "tree-inline.h"
-#include "gimple-iterator.h"
-#include "cfghooks.h"
-#include "tree-ssa-loop-manip.h"
-#include "tree-vectorizer.h"
-
-/* This file implements the loop unswitching, i.e. transformation of loops like
-
- while (A)
- {
- if (inv)
- B;
-
- X;
-
- if (!inv)
- C;
- }
-
- where inv is the loop invariant, into
-
- if (inv)
- {
- while (A)
- {
- B;
- X;
- }
- }
- else
- {
- while (A)
- {
- X;
- C;
- }
- }
-
- Inv is considered invariant iff the values it compares are both invariant;
- tree-ssa-loop-im.c ensures that all the suitable conditions are in this
- shape. */
-
-static class loop *tree_unswitch_loop (class loop *, basic_block, tree);
-static bool tree_unswitch_single_loop (class loop *, int);
-static tree tree_may_unswitch_on (basic_block, class loop *);
-static bool tree_unswitch_outer_loop (class loop *);
-static edge find_loop_guard (class loop *);
-static bool empty_bb_without_guard_p (class loop *, basic_block);
-static bool used_outside_loop_p (class loop *, tree);
-static void hoist_guard (class loop *, edge);
-static bool check_exit_phi (class loop *);
-static tree get_vop_from_header (class loop *);
-
-/* Main entry point. Perform loop unswitching on all suitable loops. */
-
-unsigned int
-tree_ssa_unswitch_loops (void)
-{
- bool changed = false;
-
- /* Go through all loops starting from innermost. */
- for (auto loop : loops_list (cfun, LI_FROM_INNERMOST))
- {
- if (!loop->inner)
- /* Unswitch innermost loop. */
- changed |= tree_unswitch_single_loop (loop, 0);
- else
- changed |= tree_unswitch_outer_loop (loop);
- }
-
- if (changed)
- return TODO_cleanup_cfg;
- return 0;
-}
-
-/* Return TRUE if an SSA_NAME maybe undefined and is therefore
- unsuitable for unswitching. STMT is the statement we are
- considering for unswitching and LOOP is the loop it appears in. */
-
-static bool
-is_maybe_undefined (const tree name, gimple *stmt, class loop *loop)
-{
- /* The loop header is the only block we can trivially determine that
- will always be executed. If the comparison is in the loop
- header, we know it's OK to unswitch on it. */
- if (gimple_bb (stmt) == loop->header)
- return false;
-
- auto_bitmap visited_ssa;
- auto_vec<tree> worklist;
- worklist.safe_push (name);
- bitmap_set_bit (visited_ssa, SSA_NAME_VERSION (name));
- while (!worklist.is_empty ())
- {
- tree t = worklist.pop ();
-
- /* If it's obviously undefined, avoid further computations. */
- if (ssa_undefined_value_p (t, true))
- return true;
-
- if (ssa_defined_default_def_p (t))
- continue;
-
- gimple *def = SSA_NAME_DEF_STMT (t);
-
- /* Check that all the PHI args are fully defined. */
- if (gphi *phi = dyn_cast <gphi *> (def))
- {
- for (unsigned i = 0; i < gimple_phi_num_args (phi); ++i)
- {
- tree t = gimple_phi_arg_def (phi, i);
- /* If an SSA has already been seen, it may be a loop,
- but we can continue and ignore this use. Otherwise,
- add the SSA_NAME to the queue and visit it later. */
- if (TREE_CODE (t) == SSA_NAME
- && bitmap_set_bit (visited_ssa, SSA_NAME_VERSION (t)))
- worklist.safe_push (t);
- }
- continue;
- }
-
- /* Uses in stmts always executed when the region header executes
- are fine. */
- if (dominated_by_p (CDI_DOMINATORS, loop->header, gimple_bb (def)))
- continue;
-
- /* Handle calls and memory loads conservatively. */
- if (!is_gimple_assign (def)
- || (gimple_assign_single_p (def)
- && gimple_vuse (def)))
- return true;
-
- /* Check that any SSA names used to define NAME are also fully
- defined. */
- use_operand_p use_p;
- ssa_op_iter iter;
- FOR_EACH_SSA_USE_OPERAND (use_p, def, iter, SSA_OP_USE)
- {
- tree t = USE_FROM_PTR (use_p);
- /* If an SSA has already been seen, it may be a loop,
- but we can continue and ignore this use. Otherwise,
- add the SSA_NAME to the queue and visit it later. */
- if (bitmap_set_bit (visited_ssa, SSA_NAME_VERSION (t)))
- worklist.safe_push (t);
- }
- }
- return false;
-}
-
-/* Checks whether we can unswitch LOOP on condition at end of BB -- one of its
- basic blocks (for what it means see comments below). */
-
-static tree
-tree_may_unswitch_on (basic_block bb, class loop *loop)
-{
- gimple *last, *def;
- gcond *stmt;
- tree cond, use;
- basic_block def_bb;
- ssa_op_iter iter;
-
- /* BB must end in a simple conditional jump. */
- last = last_stmt (bb);
- if (!last || gimple_code (last) != GIMPLE_COND)
- return NULL_TREE;
- stmt = as_a <gcond *> (last);
-
- /* To keep the things simple, we do not directly remove the conditions,
- but just replace tests with 0 != 0 resp. 1 != 0. Prevent the infinite
- loop where we would unswitch again on such a condition. */
- if (gimple_cond_true_p (stmt) || gimple_cond_false_p (stmt))
- return NULL_TREE;
-
- /* Condition must be invariant. */
- FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_USE)
- {
- def = SSA_NAME_DEF_STMT (use);
- def_bb = gimple_bb (def);
- if (def_bb
- && flow_bb_inside_loop_p (loop, def_bb))
- return NULL_TREE;
- /* Unswitching on undefined values would introduce undefined
- behavior that the original program might never exercise. */
- if (is_maybe_undefined (use, stmt, loop))
- return NULL_TREE;
- }
-
- cond = build2 (gimple_cond_code (stmt), boolean_type_node,
- gimple_cond_lhs (stmt), gimple_cond_rhs (stmt));
-
- return cond;
-}
-
-/* Simplifies COND using checks in front of the entry of the LOOP. Just very
- simplish (sufficient to prevent us from duplicating loop in unswitching
- unnecessarily). */
-
-static tree
-simplify_using_entry_checks (class loop *loop, tree cond)
-{
- edge e = loop_preheader_edge (loop);
- gimple *stmt;
-
- while (1)
- {
- stmt = last_stmt (e->src);
- if (stmt
- && gimple_code (stmt) == GIMPLE_COND
- && gimple_cond_code (stmt) == TREE_CODE (cond)
- && operand_equal_p (gimple_cond_lhs (stmt),
- TREE_OPERAND (cond, 0), 0)
- && operand_equal_p (gimple_cond_rhs (stmt),
- TREE_OPERAND (cond, 1), 0))
- return (e->flags & EDGE_TRUE_VALUE
- ? boolean_true_node
- : boolean_false_node);
-
- if (!single_pred_p (e->src))
- return cond;
-
- e = single_pred_edge (e->src);
- if (e->src == ENTRY_BLOCK_PTR_FOR_FN (cfun))
- return cond;
- }
-}
-
-/* Unswitch single LOOP. NUM is number of unswitchings done; we do not allow
- it to grow too much, it is too easy to create example on that the code would
- grow exponentially. */
-
-static bool
-tree_unswitch_single_loop (class loop *loop, int num)
-{
- basic_block *bbs;
- class loop *nloop;
- unsigned i, found;
- tree cond = NULL_TREE;
- gimple *stmt;
- bool changed = false;
- HOST_WIDE_INT iterations;
-
- dump_user_location_t loc = find_loop_location (loop);
-
- /* Perform initial tests if unswitch is eligible. */
- if (num == 0)
- {
- /* Do not unswitch in cold regions. */
- if (optimize_loop_for_size_p (loop))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, loc,
- "Not unswitching cold loops\n");
- return false;
- }
-
- /* The loop should not be too large, to limit code growth. */
- if (tree_num_loop_insns (loop, &eni_size_weights)
- > (unsigned) param_max_unswitch_insns)
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, loc,
- "Not unswitching, loop too big\n");
- return false;
- }
-
- /* If the loop is not expected to iterate, there is no need
- for unswitching. */
- iterations = estimated_loop_iterations_int (loop);
- if (iterations < 0)
- iterations = likely_max_loop_iterations_int (loop);
- if (iterations >= 0 && iterations <= 1)
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, loc,
- "Not unswitching, loop is not expected"
- " to iterate\n");
- return false;
- }
- }
-
- i = 0;
- bbs = get_loop_body (loop);
- found = loop->num_nodes;
-
- while (1)
- {
- /* Find a bb to unswitch on. */
- for (; i < loop->num_nodes; i++)
- if ((cond = tree_may_unswitch_on (bbs[i], loop)))
- break;
-
- if (i == loop->num_nodes)
- {
- if (dump_enabled_p ()
- && num > param_max_unswitch_level)
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
- "Not unswitching anymore, hit max level\n");
-
- if (found == loop->num_nodes)
- {
- free (bbs);
- return changed;
- }
- break;
- }
-
- cond = simplify_using_entry_checks (loop, cond);
- stmt = last_stmt (bbs[i]);
- if (integer_nonzerop (cond))
- {
- /* Remove false path. */
- gimple_cond_set_condition_from_tree (as_a <gcond *> (stmt),
- boolean_true_node);
- changed = true;
- }
- else if (integer_zerop (cond))
- {
- /* Remove true path. */
- gimple_cond_set_condition_from_tree (as_a <gcond *> (stmt),
- boolean_false_node);
- changed = true;
- }
- /* Do not unswitch too much. */
- else if (num > param_max_unswitch_level)
- {
- i++;
- continue;
- }
- /* In nested tree_unswitch_single_loop first optimize all conditions
- using entry checks, then discover still reachable blocks in the
- loop and find the condition only among those still reachable bbs. */
- else if (num != 0)
- {
- if (found == loop->num_nodes)
- found = i;
- i++;
- continue;
- }
- else
- {
- found = i;
- break;
- }
-
- update_stmt (stmt);
- i++;
- }
-
- if (num != 0)
- {
- basic_block *tos, *worklist;
-
- /* When called recursively, first do a quick discovery
- of reachable bbs after the above changes and only
- consider conditions in still reachable bbs. */
- tos = worklist = XNEWVEC (basic_block, loop->num_nodes);
-
- for (i = 0; i < loop->num_nodes; i++)
- bbs[i]->flags &= ~BB_REACHABLE;
-
- /* Start with marking header. */
- *tos++ = bbs[0];
- bbs[0]->flags |= BB_REACHABLE;
-
- /* Iterate: find everything reachable from what we've already seen
- within the same innermost loop. Don't look through false edges
- if condition is always true or true edges if condition is
- always false. */
- while (tos != worklist)
- {
- basic_block b = *--tos;
- edge e;
- edge_iterator ei;
- int flags = 0;
-
- if (EDGE_COUNT (b->succs) == 2)
- {
- gimple *stmt = last_stmt (b);
- if (stmt
- && gimple_code (stmt) == GIMPLE_COND)
- {
- gcond *cond_stmt = as_a <gcond *> (stmt);
- if (gimple_cond_true_p (cond_stmt))
- flags = EDGE_FALSE_VALUE;
- else if (gimple_cond_false_p (cond_stmt))
- flags = EDGE_TRUE_VALUE;
- }
- }
-
- FOR_EACH_EDGE (e, ei, b->succs)
- {
- basic_block dest = e->dest;
-
- if (dest->loop_father == loop
- && !(dest->flags & BB_REACHABLE)
- && !(e->flags & flags))
- {
- *tos++ = dest;
- dest->flags |= BB_REACHABLE;
- }
- }
- }
-
- free (worklist);
-
- /* Find a bb to unswitch on. */
- for (; found < loop->num_nodes; found++)
- if ((bbs[found]->flags & BB_REACHABLE)
- && (cond = tree_may_unswitch_on (bbs[found], loop)))
- break;
-
- if (found == loop->num_nodes)
- {
- free (bbs);
- return changed;
- }
- }
-
- if (dump_enabled_p ())
- dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loc,
- "Unswitching loop on condition: %G\n",
- last_stmt (bbs[found]));
-
- initialize_original_copy_tables ();
- /* Unswitch the loop on this condition. */
- nloop = tree_unswitch_loop (loop, bbs[found], cond);
- if (!nloop)
- {
- free_original_copy_tables ();
- free (bbs);
- return changed;
- }
-
- /* Update the SSA form after unswitching. */
- update_ssa (TODO_update_ssa);
- free_original_copy_tables ();
-
- /* Invoke itself on modified loops. */
- tree_unswitch_single_loop (nloop, num + 1);
- tree_unswitch_single_loop (loop, num + 1);
- free (bbs);
- return true;
-}
-
-/* Unswitch a LOOP w.r. to given basic block UNSWITCH_ON. We only support
- unswitching of innermost loops. COND is the condition determining which
- loop is entered -- the new loop is entered if COND is true. Returns NULL
- if impossible, new loop otherwise. */
-
-static class loop *
-tree_unswitch_loop (class loop *loop,
- basic_block unswitch_on, tree cond)
-{
- profile_probability prob_true;
- edge edge_true, edge_false;
-
- /* Some sanity checking. */
- gcc_assert (flow_bb_inside_loop_p (loop, unswitch_on));
- gcc_assert (EDGE_COUNT (unswitch_on->succs) == 2);
- gcc_assert (loop->inner == NULL);
-
- extract_true_false_edges_from_block (unswitch_on, &edge_true, &edge_false);
- prob_true = edge_true->probability;
- return loop_version (loop, unshare_expr (cond),
- NULL, prob_true,
- prob_true.invert (),
- prob_true, prob_true.invert (),
- false);
-}
-
-/* Unswitch outer loops by hoisting invariant guard on
- inner loop without code duplication. */
-static bool
-tree_unswitch_outer_loop (class loop *loop)
-{
- edge exit, guard;
- HOST_WIDE_INT iterations;
-
- gcc_assert (loop->inner);
- if (loop->inner->next)
- return false;
- /* Accept loops with single exit only which is not from inner loop. */
- exit = single_exit (loop);
- if (!exit || exit->src->loop_father != loop)
- return false;
- /* Check that phi argument of exit edge is not defined inside loop. */
- if (!check_exit_phi (loop))
- return false;
- /* If the loop is not expected to iterate, there is no need
- for unswitching. */
- iterations = estimated_loop_iterations_int (loop);
- if (iterations < 0)
- iterations = likely_max_loop_iterations_int (loop);
- if (iterations >= 0 && iterations <= 1)
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, find_loop_location (loop),
- "Not unswitching, loop is not expected"
- " to iterate\n");
- return false;
- }
-
- bool changed = false;
- while ((guard = find_loop_guard (loop)))
- {
- if (! changed)
- rewrite_virtuals_into_loop_closed_ssa (loop);
- hoist_guard (loop, guard);
- changed = true;
- }
- return changed;
-}
-
-/* Checks if the body of the LOOP is within an invariant guard. If this
- is the case, returns the edge that jumps over the real body of the loop,
- otherwise returns NULL. */
-
-static edge
-find_loop_guard (class loop *loop)
-{
- basic_block header = loop->header;
- edge guard_edge, te, fe;
- basic_block *body = NULL;
- unsigned i;
- tree use;
- ssa_op_iter iter;
-
- /* We check for the following situation:
-
- while (1)
- {
- [header]]
- loop_phi_nodes;
- something1;
- if (cond1)
- body;
- nvar = phi(orig, bvar) ... for all variables changed in body;
- [guard_end]
- something2;
- if (cond2)
- break;
- something3;
- }
-
- where:
-
- 1) cond1 is loop invariant
- 2) If cond1 is false, then the loop is essentially empty; i.e.,
- a) nothing in something1, something2 and something3 has side
- effects
- b) anything defined in something1, something2 and something3
- is not used outside of the loop. */
-
- gcond *cond;
- do
- {
- basic_block next = NULL;
- if (single_succ_p (header))
- next = single_succ (header);
- else
- {
- cond = safe_dyn_cast <gcond *> (last_stmt (header));
- if (! cond)
- return NULL;
- extract_true_false_edges_from_block (header, &te, &fe);
- /* Make sure to skip earlier hoisted guards that are left
- in place as if (true). */
- if (gimple_cond_true_p (cond))
- next = te->dest;
- else if (gimple_cond_false_p (cond))
- next = fe->dest;
- else
- break;
- }
- /* Never traverse a backedge. */
- if (header->loop_father->header == next)
- return NULL;
- header = next;
- }
- while (1);
- if (!flow_bb_inside_loop_p (loop, te->dest)
- || !flow_bb_inside_loop_p (loop, fe->dest))
- return NULL;
-
- if (just_once_each_iteration_p (loop, te->dest)
- || (single_succ_p (te->dest)
- && just_once_each_iteration_p (loop, single_succ (te->dest))))
- {
- if (just_once_each_iteration_p (loop, fe->dest))
- return NULL;
- guard_edge = te;
- }
- else if (just_once_each_iteration_p (loop, fe->dest)
- || (single_succ_p (fe->dest)
- && just_once_each_iteration_p (loop, single_succ (fe->dest))))
- guard_edge = fe;
- else
- return NULL;
-
- dump_user_location_t loc = find_loop_location (loop);
-
- /* Guard edge must skip inner loop. */
- if (!dominated_by_p (CDI_DOMINATORS, loop->inner->header,
- guard_edge == fe ? te->dest : fe->dest))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
- "Guard edge %d --> %d is not around the loop!\n",
- guard_edge->src->index, guard_edge->dest->index);
- return NULL;
- }
- if (guard_edge->dest == loop->latch)
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
- "Guard edge destination is loop latch.\n");
- return NULL;
- }
-
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, loc,
- "Considering guard %d -> %d in loop %d\n",
- guard_edge->src->index, guard_edge->dest->index,
- loop->num);
- /* Check if condition operands do not have definitions inside loop since
- any bb copying is not performed. */
- FOR_EACH_SSA_TREE_OPERAND (use, cond, iter, SSA_OP_USE)
- {
- gimple *def = SSA_NAME_DEF_STMT (use);
- basic_block def_bb = gimple_bb (def);
- if (def_bb
- && flow_bb_inside_loop_p (loop, def_bb))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, loc, "guard operands have definitions"
- " inside loop\n");
- return NULL;
- }
- }
-
- body = get_loop_body (loop);
- for (i = 0; i < loop->num_nodes; i++)
- {
- basic_block bb = body[i];
- if (bb->loop_father != loop)
- continue;
- if (bb->flags & BB_IRREDUCIBLE_LOOP)
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
- "Block %d is marked as irreducible in loop\n",
- bb->index);
- guard_edge = NULL;
- goto end;
- }
- if (!empty_bb_without_guard_p (loop, bb))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
- "Block %d has side effects\n", bb->index);
- guard_edge = NULL;
- goto end;
- }
- }
-
- if (dump_enabled_p ())
- dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loc,
- "suitable to hoist\n");
-end:
- if (body)
- free (body);
- return guard_edge;
-}
-
-/* Returns true if
- 1) no statement in BB has side effects
- 2) assuming that edge GUARD is always taken, all definitions in BB
- are noy used outside of the loop.
- KNOWN_INVARIANTS is a set of ssa names we know to be invariant, and
- PROCESSED is a set of ssa names for that we already tested whether they
- are invariant or not. */
-
-static bool
-empty_bb_without_guard_p (class loop *loop, basic_block bb)
-{
- basic_block exit_bb = single_exit (loop)->src;
- bool may_be_used_outside = (bb == exit_bb
- || !dominated_by_p (CDI_DOMINATORS, bb, exit_bb));
- tree name;
- ssa_op_iter op_iter;
-
- /* Phi nodes do not have side effects, but their results might be used
- outside of the loop. */
- if (may_be_used_outside)
- {
- for (gphi_iterator gsi = gsi_start_phis (bb);
- !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gphi *phi = gsi.phi ();
- name = PHI_RESULT (phi);
- if (virtual_operand_p (name))
- continue;
-
- if (used_outside_loop_p (loop, name))
- return false;
- }
- }
-
- for (gimple_stmt_iterator gsi = gsi_start_bb (bb);
- !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gimple *stmt = gsi_stmt (gsi);
- if (gimple_has_side_effects (stmt))
- return false;
-
- if (gimple_vdef(stmt))
- return false;
-
- FOR_EACH_SSA_TREE_OPERAND (name, stmt, op_iter, SSA_OP_DEF)
- {
- if (may_be_used_outside
- && used_outside_loop_p (loop, name))
- return false;
- }
- }
- return true;
-}
-
-/* Return true if NAME is used outside of LOOP. */
-
-static bool
-used_outside_loop_p (class loop *loop, tree name)
-{
- imm_use_iterator it;
- use_operand_p use;
-
- FOR_EACH_IMM_USE_FAST (use, it, name)
- {
- gimple *stmt = USE_STMT (use);
- if (!flow_bb_inside_loop_p (loop, gimple_bb (stmt)))
- return true;
- }
-
- return false;
-}
-
-/* Return argument for loop preheader edge in header virtual phi if any. */
-
-static tree
-get_vop_from_header (class loop *loop)
-{
- for (gphi_iterator gsi = gsi_start_phis (loop->header);
- !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gphi *phi = gsi.phi ();
- if (!virtual_operand_p (gimple_phi_result (phi)))
- continue;
- return PHI_ARG_DEF_FROM_EDGE (phi, loop_preheader_edge (loop));
- }
- return NULL_TREE;
-}
-
-/* Move the check of GUARD outside of LOOP. */
-
-static void
-hoist_guard (class loop *loop, edge guard)
-{
- edge exit = single_exit (loop);
- edge preh = loop_preheader_edge (loop);
- basic_block pre_header = preh->src;
- basic_block bb;
- edge te, fe, e, new_edge;
- gimple *stmt;
- basic_block guard_bb = guard->src;
- edge not_guard;
- gimple_stmt_iterator gsi;
- int flags = 0;
- bool fix_dom_of_exit;
- gcond *cond_stmt, *new_cond_stmt;
-
- bb = get_immediate_dominator (CDI_DOMINATORS, exit->dest);
- fix_dom_of_exit = flow_bb_inside_loop_p (loop, bb);
- gsi = gsi_last_bb (guard_bb);
- stmt = gsi_stmt (gsi);
- gcc_assert (gimple_code (stmt) == GIMPLE_COND);
- cond_stmt = as_a <gcond *> (stmt);
- extract_true_false_edges_from_block (guard_bb, &te, &fe);
- /* Insert guard to PRE_HEADER. */
- if (!empty_block_p (pre_header))
- gsi = gsi_last_bb (pre_header);
- else
- gsi = gsi_start_bb (pre_header);
- /* Create copy of COND_STMT. */
- new_cond_stmt = gimple_build_cond (gimple_cond_code (cond_stmt),
- gimple_cond_lhs (cond_stmt),
- gimple_cond_rhs (cond_stmt),
- NULL_TREE, NULL_TREE);
- gsi_insert_after (&gsi, new_cond_stmt, GSI_NEW_STMT);
- /* Convert COND_STMT to true/false conditional. */
- if (guard == te)
- gimple_cond_make_false (cond_stmt);
- else
- gimple_cond_make_true (cond_stmt);
- update_stmt (cond_stmt);
- /* Create new loop pre-header. */
- e = split_block (pre_header, last_stmt (pre_header));
-
- dump_user_location_t loc = find_loop_location (loop);
-
- if (dump_enabled_p ())
- {
- char buffer[64];
- guard->probability.dump (buffer);
-
- dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loc,
- "Moving guard %i->%i (prob %s) to bb %i, "
- "new preheader is %i\n",
- guard->src->index, guard->dest->index,
- buffer, e->src->index, e->dest->index);
- }
-
- gcc_assert (loop_preheader_edge (loop)->src == e->dest);
-
- if (guard == fe)
- {
- e->flags = EDGE_TRUE_VALUE;
- flags |= EDGE_FALSE_VALUE;
- not_guard = te;
- }
- else
- {
- e->flags = EDGE_FALSE_VALUE;
- flags |= EDGE_TRUE_VALUE;
- not_guard = fe;
- }
- new_edge = make_edge (pre_header, exit->dest, flags);
-
- /* Determine the probability that we skip the loop. Assume that loop has
- same average number of iterations regardless outcome of guard. */
- new_edge->probability = guard->probability;
- profile_count skip_count = guard->src->count.nonzero_p ()
- ? guard->count ().apply_scale (pre_header->count,
- guard->src->count)
- : guard->count ().apply_probability (new_edge->probability);
-
- if (skip_count > e->count ())
- {
- fprintf (dump_file, " Capping count; expect profile inconsistency\n");
- skip_count = e->count ();
- }
- if (dump_enabled_p ())
- {
- char buffer[64];
- new_edge->probability.dump (buffer);
-
- dump_printf_loc (MSG_NOTE, loc,
- "Estimated probability of skipping loop is %s\n",
- buffer);
- }
-
- /* Update profile after the transform:
-
- First decrease count of path from newly hoisted loop guard
- to loop header... */
- e->probability = new_edge->probability.invert ();
- e->dest->count = e->count ();
-
- /* ... now update profile to represent that original guard will be optimized
- away ... */
- guard->probability = profile_probability::never ();
- not_guard->probability = profile_probability::always ();
-
- /* ... finally scale everything in the loop except for guarded basic blocks
- where profile does not change. */
- basic_block *body = get_loop_body (loop);
-
- for (unsigned int i = 0; i < loop->num_nodes; i++)
- {
- basic_block bb = body[i];
- if (!dominated_by_p (CDI_DOMINATORS, bb, not_guard->dest))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_NOTE, loc,
- "Scaling nonguarded BBs in loop: %i\n",
- bb->index);
- if (e->probability.initialized_p ())
- scale_bbs_frequencies (&bb, 1, e->probability);
- }
- }
-
- if (fix_dom_of_exit)
- set_immediate_dominator (CDI_DOMINATORS, exit->dest, pre_header);
- /* Add NEW_ADGE argument for all phi in post-header block. */
- bb = exit->dest;
- for (gphi_iterator gsi = gsi_start_phis (bb);
- !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gphi *phi = gsi.phi ();
- tree arg;
- if (virtual_operand_p (gimple_phi_result (phi)))
- {
- arg = get_vop_from_header (loop);
- if (arg == NULL_TREE)
- /* Use exit edge argument. */
- arg = PHI_ARG_DEF_FROM_EDGE (phi, exit);
- add_phi_arg (phi, arg, new_edge, UNKNOWN_LOCATION);
- }
- else
- {
- /* Use exit edge argument. */
- arg = PHI_ARG_DEF_FROM_EDGE (phi, exit);
- add_phi_arg (phi, arg, new_edge, UNKNOWN_LOCATION);
- }
- }
-
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
- "Guard hoisted\n");
-
- free (body);
-}
-
-/* Return true if phi argument for exit edge can be used
- for edge around loop. */
-
-static bool
-check_exit_phi (class loop *loop)
-{
- edge exit = single_exit (loop);
- basic_block pre_header = loop_preheader_edge (loop)->src;
-
- for (gphi_iterator gsi = gsi_start_phis (exit->dest);
- !gsi_end_p (gsi); gsi_next (&gsi))
- {
- gphi *phi = gsi.phi ();
- tree arg;
- gimple *def;
- basic_block def_bb;
- if (virtual_operand_p (gimple_phi_result (phi)))
- continue;
- arg = PHI_ARG_DEF_FROM_EDGE (phi, exit);
- if (TREE_CODE (arg) != SSA_NAME)
- continue;
- def = SSA_NAME_DEF_STMT (arg);
- if (!def)
- continue;
- def_bb = gimple_bb (def);
- if (!def_bb)
- continue;
- if (!dominated_by_p (CDI_DOMINATORS, pre_header, def_bb))
- /* Definition inside loop! */
- return false;
- /* Check loop closed phi invariant. */
- if (!flow_bb_inside_loop_p (def_bb->loop_father, pre_header))
- return false;
- }
- return true;
-}
-
-/* Loop unswitching pass. */
-
-namespace {
-
-const pass_data pass_data_tree_unswitch =
-{
- GIMPLE_PASS, /* type */
- "unswitch", /* name */
- OPTGROUP_LOOP, /* optinfo_flags */
- TV_TREE_LOOP_UNSWITCH, /* tv_id */
- PROP_cfg, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0, /* todo_flags_finish */
-};
-
-class pass_tree_unswitch : public gimple_opt_pass
-{
-public:
- pass_tree_unswitch (gcc::context *ctxt)
- : gimple_opt_pass (pass_data_tree_unswitch, ctxt)
- {}
-
- /* opt_pass methods: */
- virtual bool gate (function *) { return flag_unswitch_loops != 0; }
- virtual unsigned int execute (function *);
-
-}; // class pass_tree_unswitch
-
-unsigned int
-pass_tree_unswitch::execute (function *fun)
-{
- if (number_of_loops (fun) <= 1)
- return 0;
-
- return tree_ssa_unswitch_loops ();
-}
-
-} // anon namespace
-
-gimple_opt_pass *
-make_pass_tree_unswitch (gcc::context *ctxt)
-{
- return new pass_tree_unswitch (ctxt);
-}
-
-
generated by cgit v1.1 at 2025-04-23 19:28:55 +0000