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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-warn-restrict.c
parent490e23032baaece71f2ec09fa1805064b150fbc2 (diff)
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Rename .c files to .cc files.
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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... * 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-warn-restrict.c')
-rw-r--r--gcc/gimple-ssa-warn-restrict.c2175
1 files changed, 0 insertions, 2175 deletions
diff --git a/gcc/gimple-ssa-warn-restrict.c b/gcc/gimple-ssa-warn-restrict.c
deleted file mode 100644
index d1beb01..0000000
--- a/gcc/gimple-ssa-warn-restrict.c
+++ /dev/null
@@ -1,2175 +0,0 @@
-/* Pass to detect and issue warnings for violations of the restrict
- qualifier.
- Copyright (C) 2017-2022 Free Software Foundation, Inc.
- Contributed by Martin Sebor <msebor@redhat.com>.
-
- This file is part of GCC.
-
- GCC is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 3, or (at your option) any later
- version.
-
- GCC is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
-
- You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING3. If not see
- <http://www.gnu.org/licenses/>. */
-
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "backend.h"
-#include "tree.h"
-#include "gimple.h"
-#include "tree-pass.h"
-#include "pointer-query.h"
-#include "ssa.h"
-#include "gimple-pretty-print.h"
-#include "gimple-ssa-warn-access.h"
-#include "gimple-ssa-warn-restrict.h"
-#include "diagnostic-core.h"
-#include "fold-const.h"
-#include "gimple-iterator.h"
-#include "tree-dfa.h"
-#include "tree-ssa.h"
-#include "tree-cfg.h"
-#include "tree-object-size.h"
-#include "calls.h"
-#include "cfgloop.h"
-#include "intl.h"
-#include "gimple-range.h"
-
-namespace {
-
-const pass_data pass_data_wrestrict = {
- GIMPLE_PASS,
- "wrestrict",
- OPTGROUP_NONE,
- TV_NONE,
- PROP_cfg, /* Properties_required. */
- 0, /* properties_provided. */
- 0, /* properties_destroyed. */
- 0, /* properties_start */
- 0, /* properties_finish */
-};
-
-/* Pass to detect violations of strict aliasing requirements in calls
- to built-in string and raw memory functions. */
-class pass_wrestrict : public gimple_opt_pass
-{
- public:
- pass_wrestrict (gcc::context *ctxt)
- : gimple_opt_pass (pass_data_wrestrict, ctxt)
- { }
-
- opt_pass *clone () { return new pass_wrestrict (m_ctxt); }
-
- virtual bool gate (function *);
- virtual unsigned int execute (function *);
-};
-
-bool
-pass_wrestrict::gate (function *fun ATTRIBUTE_UNUSED)
-{
- return warn_array_bounds || warn_restrict || warn_stringop_overflow;
-}
-
-static void check_call (range_query *, gimple *);
-
-static void
-wrestrict_walk (range_query *query, basic_block bb)
-{
- /* Iterate over statements, looking for function calls. */
- for (gimple_stmt_iterator si = gsi_start_bb (bb); !gsi_end_p (si);
- gsi_next (&si))
- {
- gimple *stmt = gsi_stmt (si);
- if (!is_gimple_call (stmt))
- continue;
-
- check_call (query, stmt);
- }
-}
-
-unsigned
-pass_wrestrict::execute (function *fun)
-{
- gimple_ranger ranger;
- basic_block bb;
- FOR_EACH_BB_FN (bb, fun)
- wrestrict_walk (&ranger, bb);
-
- return 0;
-}
-
-/* Description of a memory reference by a built-in function. This
- is similar to ao_ref but made especially suitable for -Wrestrict
- and not for optimization. */
-class builtin_memref
-{
-public:
- /* The original pointer argument to the built-in function. */
- tree ptr;
- /* The referenced subobject or NULL if not available, and the base
- object of the memory reference or NULL. */
- tree ref;
- tree base;
-
- /* The size of the BASE object, PTRDIFF_MAX if indeterminate,
- and negative until (possibly lazily) initialized. */
- offset_int basesize;
- /* Same for the subobject. */
- offset_int refsize;
-
- /* The non-negative offset of the referenced subobject. Used to avoid
- warnings for (apparently) possibly but not definitively overlapping
- accesses to member arrays. Negative when unknown/invalid. */
- offset_int refoff;
-
- /* The offset range relative to the base. */
- offset_int offrange[2];
- /* The size range of the access to this reference. */
- offset_int sizrange[2];
-
- /* Cached result of get_max_objsize(). */
- const offset_int maxobjsize;
-
- /* True for "bounded" string functions like strncat, and strncpy
- and their variants that specify either an exact or upper bound
- on the size of the accesses they perform. For strncat both
- the source and destination references are bounded. For strncpy
- only the destination reference is. */
- bool strbounded_p;
-
- builtin_memref (range_query *, gimple *, tree, tree);
-
- tree offset_out_of_bounds (int, offset_int[3]) const;
-
-private:
- /* Call statement to the built-in. */
- gimple *stmt;
-
- range_query *query;
-
- /* Ctor helper to set or extend OFFRANGE based on argument. */
- void extend_offset_range (tree);
-
- /* Ctor helper to determine BASE and OFFRANGE from argument. */
- void set_base_and_offset (tree);
-};
-
-/* Description of a memory access by a raw memory or string built-in
- function involving a pair of builtin_memref's. */
-class builtin_access
-{
- public:
- /* Destination and source memory reference. */
- builtin_memref* const dstref;
- builtin_memref* const srcref;
- /* The size range of the access. It's the greater of the accesses
- to the two references. */
- HOST_WIDE_INT sizrange[2];
-
- /* The minimum and maximum offset of an overlap of the access
- (if it does, in fact, overlap), and the size of the overlap. */
- HOST_WIDE_INT ovloff[2];
- HOST_WIDE_INT ovlsiz[2];
-
- /* True to consider valid only accesses to the smallest subobject
- and false for raw memory functions. */
- bool strict () const
- {
- return (detect_overlap != &builtin_access::generic_overlap
- && detect_overlap != &builtin_access::no_overlap);
- }
-
- builtin_access (range_query *, gimple *, builtin_memref &, builtin_memref &);
-
- /* Entry point to determine overlap. */
- bool overlap ();
-
- offset_int write_off (tree) const;
-
- void dump (FILE *) const;
-
- private:
- /* Implementation functions used to determine overlap. */
- bool generic_overlap ();
- bool strcat_overlap ();
- bool strcpy_overlap ();
-
- bool no_overlap ()
- {
- return false;
- }
-
- offset_int overlap_size (const offset_int [2], const offset_int[2],
- offset_int [2]);
-
- private:
- /* Temporaries used to compute the final result. */
- offset_int dstoff[2];
- offset_int srcoff[2];
- offset_int dstsiz[2];
- offset_int srcsiz[2];
-
- /* Pointer to a member function to call to determine overlap. */
- bool (builtin_access::*detect_overlap) ();
-};
-
-/* Initialize a memory reference representation from a pointer EXPR and
- a size SIZE in bytes. If SIZE is NULL_TREE then the size is assumed
- to be unknown. STMT is the statement in which expr appears in. */
-
-builtin_memref::builtin_memref (range_query *query, gimple *stmt, tree expr,
- tree size)
-: ptr (expr),
- ref (),
- base (),
- basesize (-1),
- refsize (-1),
- refoff (HOST_WIDE_INT_MIN),
- offrange (),
- sizrange (),
- maxobjsize (tree_to_shwi (max_object_size ())),
- strbounded_p (),
- stmt (stmt),
- query (query)
-{
- /* Unfortunately, wide_int default ctor is a no-op so array members
- of the type must be set individually. */
- offrange[0] = offrange[1] = 0;
- sizrange[0] = sizrange[1] = 0;
-
- if (!expr)
- return;
-
- /* Find the BASE object or pointer referenced by EXPR and set
- the offset range OFFRANGE in the process. */
- set_base_and_offset (expr);
-
- if (size)
- {
- tree range[2];
- /* Determine the size range, allowing for the result to be [0, 0]
- for SIZE in the anti-range ~[0, N] where N >= PTRDIFF_MAX. */
- get_size_range (query, size, stmt, range, SR_ALLOW_ZERO);
- sizrange[0] = wi::to_offset (range[0]);
- sizrange[1] = wi::to_offset (range[1]);
- /* get_size_range returns SIZE_MAX for the maximum size.
- Constrain it to the real maximum of PTRDIFF_MAX. */
- if (sizrange[0] <= maxobjsize && sizrange[1] > maxobjsize)
- sizrange[1] = maxobjsize;
- }
- else
- sizrange[1] = maxobjsize;
-
- if (!DECL_P (base))
- return;
-
- /* If the offset could be in the range of the referenced object
- constrain its bounds so neither exceeds those of the object. */
- if (offrange[0] < 0 && offrange[1] > 0)
- offrange[0] = 0;
-
- offset_int maxoff = maxobjsize;
- tree basetype = TREE_TYPE (base);
- if (TREE_CODE (basetype) == ARRAY_TYPE)
- {
- if (ref && array_at_struct_end_p (ref))
- ; /* Use the maximum possible offset for last member arrays. */
- else if (tree basesize = TYPE_SIZE_UNIT (basetype))
- if (TREE_CODE (basesize) == INTEGER_CST)
- /* Size could be non-constant for a variable-length type such
- as a struct with a VLA member (a GCC extension). */
- maxoff = wi::to_offset (basesize);
- }
-
- if (offrange[0] >= 0)
- {
- if (offrange[1] < 0)
- offrange[1] = offrange[0] <= maxoff ? maxoff : maxobjsize;
- else if (offrange[0] <= maxoff && offrange[1] > maxoff)
- offrange[1] = maxoff;
- }
-}
-
-/* Based on the initial length of the destination STARTLEN, returns
- the offset of the first write access from the beginning of
- the destination. Nonzero only for strcat-type of calls. */
-
-offset_int builtin_access::write_off (tree startlen) const
-{
- if (detect_overlap != &builtin_access::strcat_overlap
- || !startlen || TREE_CODE (startlen) != INTEGER_CST)
- return 0;
-
- return wi::to_offset (startlen);
-}
-
-/* Ctor helper to set or extend OFFRANGE based on the OFFSET argument.
- Pointer offsets are represented as unsigned sizetype but must be
- treated as signed. */
-
-void
-builtin_memref::extend_offset_range (tree offset)
-{
- if (TREE_CODE (offset) == INTEGER_CST)
- {
- offset_int off = int_cst_value (offset);
- if (off != 0)
- {
- offrange[0] += off;
- offrange[1] += off;
- }
- return;
- }
-
- if (TREE_CODE (offset) == SSA_NAME)
- {
- /* A pointer offset is represented as sizetype but treated
- as signed. */
- wide_int min, max;
- value_range_kind rng;
- value_range vr;
- if (query && query->range_of_expr (vr, offset, stmt))
- {
- rng = vr.kind ();
- if (!vr.undefined_p ())
- {
- min = wi::to_wide (vr.min ());
- max = wi::to_wide (vr.max ());
- }
- }
- else
- {
- /* There is a global version here because
- check_bounds_or_overlap may be called from gimple
- fold during gimple lowering. */
- get_range_query (cfun)->range_of_expr (vr, offset, stmt);
- rng = vr.kind ();
- if (!vr.undefined_p ())
- {
- min = wi::to_wide (vr.min ());
- max = wi::to_wide (vr.max ());
- }
- }
- if (rng == VR_ANTI_RANGE && wi::lts_p (max, min))
- {
- /* Convert an anti-range whose upper bound is less than
- its lower bound to a signed range. */
- offrange[0] += offset_int::from (max + 1, SIGNED);
- offrange[1] += offset_int::from (min - 1, SIGNED);
- return;
- }
-
- if (rng == VR_RANGE
- && (DECL_P (base) || wi::lts_p (min, max)))
- {
- /* Preserve the bounds of the range for an offset into
- a known object (it may be adjusted later relative to
- a constant offset from its beginning). Otherwise use
- the bounds only when they are ascending when treated
- as signed. */
- offrange[0] += offset_int::from (min, SIGNED);
- offrange[1] += offset_int::from (max, SIGNED);
- return;
- }
-
- /* Handle an anti-range the same as no range at all. */
- gimple *stmt = SSA_NAME_DEF_STMT (offset);
- tree type;
- if (is_gimple_assign (stmt)
- && (type = TREE_TYPE (gimple_assign_rhs1 (stmt)))
- && INTEGRAL_TYPE_P (type))
- {
- tree_code code = gimple_assign_rhs_code (stmt);
- if (code == NOP_EXPR)
- {
- /* Use the bounds of the type of the NOP_EXPR operand
- even if it's signed. The result doesn't trigger
- warnings but makes their output more readable. */
- offrange[0] += wi::to_offset (TYPE_MIN_VALUE (type));
- offrange[1] += wi::to_offset (TYPE_MAX_VALUE (type));
- return;
- }
- }
- }
-
- const offset_int maxoff = tree_to_shwi (max_object_size ()) >> 1;
- const offset_int minoff = -maxoff - 1;
-
- offrange[0] += minoff;
- offrange[1] += maxoff;
-}
-
-/* Determines the base object or pointer of the reference EXPR
- and the offset range from the beginning of the base. */
-
-void
-builtin_memref::set_base_and_offset (tree expr)
-{
- tree offset = NULL_TREE;
-
- if (TREE_CODE (expr) == SSA_NAME)
- {
- /* Try to tease the offset out of the pointer. */
- gimple *stmt = SSA_NAME_DEF_STMT (expr);
- if (!base
- && gimple_assign_single_p (stmt)
- && gimple_assign_rhs_code (stmt) == ADDR_EXPR)
- expr = gimple_assign_rhs1 (stmt);
- else if (is_gimple_assign (stmt))
- {
- tree_code code = gimple_assign_rhs_code (stmt);
- if (code == NOP_EXPR)
- {
- tree rhs = gimple_assign_rhs1 (stmt);
- if (POINTER_TYPE_P (TREE_TYPE (rhs)))
- expr = gimple_assign_rhs1 (stmt);
- else
- {
- base = expr;
- return;
- }
- }
- else if (code == POINTER_PLUS_EXPR)
- {
- expr = gimple_assign_rhs1 (stmt);
- offset = gimple_assign_rhs2 (stmt);
- }
- else
- {
- base = expr;
- return;
- }
- }
- else
- {
- /* FIXME: Handle PHI nodes in case like:
- _12 = &MEM[(void *)&a + 2B] + _10;
-
- <bb> [local count: 1073741824]:
- # prephitmp_13 = PHI <_12, &MEM[(void *)&a + 2B]>
- memcpy (prephitmp_13, p_7(D), 6); */
- base = expr;
- return;
- }
- }
-
- if (TREE_CODE (expr) == ADDR_EXPR)
- expr = TREE_OPERAND (expr, 0);
-
- /* Stash the reference for offset validation. */
- ref = expr;
-
- poly_int64 bitsize, bitpos;
- tree var_off;
- machine_mode mode;
- int sign, reverse, vol;
-
- /* Determine the base object or pointer of the reference and
- the constant bit offset from the beginning of the base.
- If the offset has a non-constant component, it will be in
- VAR_OFF. MODE, SIGN, REVERSE, and VOL are write only and
- unused here. */
- base = get_inner_reference (expr, &bitsize, &bitpos, &var_off,
- &mode, &sign, &reverse, &vol);
-
- /* get_inner_reference is not expected to return null. */
- gcc_assert (base != NULL);
-
- if (offset)
- extend_offset_range (offset);
-
- poly_int64 bytepos = exact_div (bitpos, BITS_PER_UNIT);
-
- /* Convert the poly_int64 offset to offset_int. The offset
- should be constant but be prepared for it not to be just in
- case. */
- offset_int cstoff;
- if (bytepos.is_constant (&cstoff))
- {
- offrange[0] += cstoff;
- offrange[1] += cstoff;
-
- /* Besides the reference saved above, also stash the offset
- for validation. */
- if (TREE_CODE (expr) == COMPONENT_REF)
- refoff = cstoff;
- }
- else
- offrange[1] += maxobjsize;
-
- if (var_off)
- {
- if (TREE_CODE (var_off) == INTEGER_CST)
- {
- cstoff = wi::to_offset (var_off);
- offrange[0] += cstoff;
- offrange[1] += cstoff;
- }
- else
- offrange[1] += maxobjsize;
- }
-
- if (TREE_CODE (base) == MEM_REF)
- {
- tree memrefoff = fold_convert (ptrdiff_type_node, TREE_OPERAND (base, 1));
- extend_offset_range (memrefoff);
- base = TREE_OPERAND (base, 0);
-
- if (refoff != HOST_WIDE_INT_MIN
- && TREE_CODE (expr) == COMPONENT_REF)
- {
- /* Bump up the offset of the referenced subobject to reflect
- the offset to the enclosing object. For example, so that
- in
- struct S { char a, b[3]; } s[2];
- strcpy (s[1].b, "1234");
- REFOFF is set to s[1].b - (char*)s. */
- offset_int off = tree_to_shwi (memrefoff);
- refoff += off;
- }
-
- if (!integer_zerop (memrefoff))
- /* A non-zero offset into an array of struct with flexible array
- members implies that the array is empty because there is no
- way to initialize such a member when it belongs to an array.
- This must be some sort of a bug. */
- refsize = 0;
- }
-
- if (TREE_CODE (ref) == COMPONENT_REF)
- if (tree size = component_ref_size (ref))
- if (TREE_CODE (size) == INTEGER_CST)
- refsize = wi::to_offset (size);
-
- if (TREE_CODE (base) == SSA_NAME)
- set_base_and_offset (base);
-}
-
-/* Return error_mark_node if the signed offset exceeds the bounds
- of the address space (PTRDIFF_MAX). Otherwise, return either BASE
- or REF when the offset exceeds the bounds of the BASE or REF object,
- and set OOBOFF to the past-the-end offset formed by the reference,
- including its size. OOBOFF is initially setto the range of offsets,
- and OOBOFF[2] to the offset of the first write access (nonzero for
- the strcat family). When STRICT is nonzero use REF size, when
- available, otherwise use BASE size. When STRICT is greater than 1,
- use the size of the last array member as the bound, otherwise treat
- such a member as a flexible array member. Return NULL when the offset
- is in bounds. */
-
-tree
-builtin_memref::offset_out_of_bounds (int strict, offset_int ooboff[3]) const
-{
- if (!ptr)
- return NULL_TREE;
-
- /* The offset of the first write access or zero. */
- offset_int wroff = ooboff[2];
-
- /* A temporary, possibly adjusted, copy of the offset range. */
- offset_int offrng[2] = { ooboff[0], ooboff[1] };
-
- if (DECL_P (base) && TREE_CODE (TREE_TYPE (base)) == ARRAY_TYPE)
- {
- /* Check for offset in an anti-range with a negative lower bound.
- For such a range, consider only the non-negative subrange. */
- if (offrng[1] < offrng[0] && offrng[1] < 0)
- offrng[1] = maxobjsize;
- }
-
- /* Conservative offset of the last byte of the referenced object. */
- offset_int endoff;
-
- /* The bounds need not be ordered. Set HIB to use as the index
- of the larger of the bounds and LOB as the opposite. */
- bool hib = wi::les_p (offrng[0], offrng[1]);
- bool lob = !hib;
-
- /* Set to the size remaining in the object after subtracting
- REFOFF. It may become negative as a result of negative indices
- into the enclosing object, such as in:
- extern struct S { char a[4], b[3], c[1]; } *p;
- strcpy (p[-3].b, "123"); */
- offset_int size = basesize;
- tree obj = base;
-
- const bool decl_p = DECL_P (obj);
-
- if (basesize < 0)
- {
- endoff = offrng[lob] + (sizrange[0] - wroff);
-
- /* For a reference through a pointer to an object of unknown size
- all initial offsets are considered valid, positive as well as
- negative, since the pointer itself can point past the beginning
- of the object. However, the sum of the lower bound of the offset
- and that of the size must be less than or equal than PTRDIFF_MAX. */
- if (endoff > maxobjsize)
- return error_mark_node;
-
- /* When the referenced subobject is known, the end offset must be
- within its bounds. Otherwise there is nothing to do. */
- if (strict
- && !decl_p
- && ref
- && refsize >= 0
- && TREE_CODE (ref) == COMPONENT_REF)
- {
- /* If REFOFF is negative, SIZE will become negative here. */
- size = refoff + refsize;
- obj = ref;
- }
- else
- return NULL_TREE;
- }
-
- /* A reference to an object of known size must be within the bounds
- of either the base object or the subobject (see above for when
- a subobject can be used). */
- if ((decl_p && offrng[hib] < 0) || offrng[lob] > size)
- return obj;
-
- /* The extent of the reference must also be within the bounds of
- the base object (if known) or the subobject or the maximum object
- size otherwise. */
- endoff = offrng[lob] + sizrange[0];
- if (endoff > maxobjsize)
- return error_mark_node;
-
- if (strict
- && decl_p
- && ref
- && refsize >= 0
- && TREE_CODE (ref) == COMPONENT_REF)
- {
- /* If the reference is to a member subobject of a declared object,
- the offset must be within the bounds of the subobject. */
- size = refoff + refsize;
- obj = ref;
- }
-
- if (endoff <= size)
- return NULL_TREE;
-
- /* Set the out-of-bounds offset range to be one greater than
- that delimited by the reference including its size. */
- ooboff[lob] = size;
-
- if (endoff > ooboff[lob])
- ooboff[hib] = endoff - 1;
- else
- ooboff[hib] = offrng[lob] + sizrange[1];
-
- return obj;
-}
-
-/* Create an association between the memory references DST and SRC
- for access by a call EXPR to a memory or string built-in funtion. */
-
-builtin_access::builtin_access (range_query *query, gimple *call,
- builtin_memref &dst,
- builtin_memref &src)
-: dstref (&dst), srcref (&src), sizrange (), ovloff (), ovlsiz (),
- dstoff (), srcoff (), dstsiz (), srcsiz ()
-{
- dstoff[0] = dst.offrange[0];
- dstoff[1] = dst.offrange[1];
-
- /* Zero out since the offset_int ctors invoked above are no-op. */
- srcoff[0] = srcoff[1] = 0;
- dstsiz[0] = dstsiz[1] = 0;
- srcsiz[0] = srcsiz[1] = 0;
-
- /* Object Size Type to use to determine the size of the destination
- and source objects. Overridden below for raw memory functions. */
- int ostype = 1;
-
- /* True when the size of one reference depends on the offset of
- itself or the other. */
- bool depends_p = true;
-
- /* True when the size of the destination reference DSTREF has been
- determined from SRCREF and so needs to be adjusted by the latter's
- offset. Only meaningful for bounded string functions like strncpy. */
- bool dstadjust_p = false;
-
- /* The size argument number (depends on the built-in). */
- unsigned sizeargno = 2;
-
- tree func = gimple_call_fndecl (call);
- switch (DECL_FUNCTION_CODE (func))
- {
- case BUILT_IN_MEMCPY:
- case BUILT_IN_MEMCPY_CHK:
- case BUILT_IN_MEMPCPY:
- case BUILT_IN_MEMPCPY_CHK:
- ostype = 0;
- depends_p = false;
- detect_overlap = &builtin_access::generic_overlap;
- break;
-
- case BUILT_IN_MEMMOVE:
- case BUILT_IN_MEMMOVE_CHK:
- /* For memmove there is never any overlap to check for. */
- ostype = 0;
- depends_p = false;
- detect_overlap = &builtin_access::no_overlap;
- break;
-
- case BUILT_IN_MEMSET:
- case BUILT_IN_MEMSET_CHK:
- /* For memset there is never any overlap to check for. */
- ostype = 0;
- depends_p = false;
- detect_overlap = &builtin_access::no_overlap;
- break;
-
- case BUILT_IN_STPNCPY:
- case BUILT_IN_STPNCPY_CHK:
- case BUILT_IN_STRNCPY:
- case BUILT_IN_STRNCPY_CHK:
- dstref->strbounded_p = true;
- detect_overlap = &builtin_access::strcpy_overlap;
- break;
-
- case BUILT_IN_STPCPY:
- case BUILT_IN_STPCPY_CHK:
- case BUILT_IN_STRCPY:
- case BUILT_IN_STRCPY_CHK:
- detect_overlap = &builtin_access::strcpy_overlap;
- break;
-
- case BUILT_IN_STRCAT:
- case BUILT_IN_STRCAT_CHK:
- detect_overlap = &builtin_access::strcat_overlap;
- break;
-
- case BUILT_IN_STRNCAT:
- case BUILT_IN_STRNCAT_CHK:
- dstref->strbounded_p = true;
- srcref->strbounded_p = true;
- detect_overlap = &builtin_access::strcat_overlap;
- break;
-
- default:
- /* Handle other string functions here whose access may need
- to be validated for in-bounds offsets and non-overlapping
- copies. */
- return;
- }
-
- const offset_int maxobjsize = dst.maxobjsize;
-
- /* Try to determine the size of the base object. compute_objsize
- expects a pointer so create one if BASE is a non-pointer object. */
- tree addr;
- if (dst.basesize < 0)
- {
- addr = dst.base;
- if (!POINTER_TYPE_P (TREE_TYPE (addr)))
- addr = build1 (ADDR_EXPR, (TREE_TYPE (addr)), addr);
-
- if (tree dstsize = compute_objsize (addr, call, ostype))
- dst.basesize = wi::to_offset (dstsize);
- else if (POINTER_TYPE_P (TREE_TYPE (addr)))
- dst.basesize = HOST_WIDE_INT_MIN;
- else
- dst.basesize = maxobjsize;
- }
-
- if (src.base && src.basesize < 0)
- {
- addr = src.base;
- if (!POINTER_TYPE_P (TREE_TYPE (addr)))
- addr = build1 (ADDR_EXPR, (TREE_TYPE (addr)), addr);
-
- if (tree srcsize = compute_objsize (addr, call, ostype))
- src.basesize = wi::to_offset (srcsize);
- else if (POINTER_TYPE_P (TREE_TYPE (addr)))
- src.basesize = HOST_WIDE_INT_MIN;
- else
- src.basesize = maxobjsize;
- }
-
- /* Make adjustments for references to the same object by string
- built-in functions to reflect the constraints imposed by
- the function. */
-
- /* For bounded string functions determine the range of the bound
- on the access. For others, the range stays unbounded. */
- offset_int bounds[2] = { maxobjsize, maxobjsize };
- if (dstref->strbounded_p)
- {
- unsigned nargs = gimple_call_num_args (call);
- if (nargs <= sizeargno)
- return;
-
- tree size = gimple_call_arg (call, sizeargno);
- tree range[2];
- if (get_size_range (query, size, call, range, true))
- {
- bounds[0] = wi::to_offset (range[0]);
- bounds[1] = wi::to_offset (range[1]);
- }
-
- /* If both references' size ranges are indeterminate use the last
- (size) argument from the function call as a substitute. This
- may only be necessary for strncpy (but not for memcpy where
- the size range would have been already determined this way). */
- if (dstref->sizrange[0] == 0 && dstref->sizrange[1] == maxobjsize
- && srcref->sizrange[0] == 0 && srcref->sizrange[1] == maxobjsize)
- {
- dstref->sizrange[0] = bounds[0];
- dstref->sizrange[1] = bounds[1];
- }
- }
-
- bool dstsize_set = false;
- /* The size range of one reference involving the same base object
- can be determined from the size range of the other reference.
- This makes it possible to compute accurate offsets for warnings
- involving functions like strcpy where the length of just one of
- the two arguments is known (determined by tree-ssa-strlen). */
- if (dstref->sizrange[0] == 0 && dstref->sizrange[1] == maxobjsize)
- {
- /* When the destination size is unknown set it to the size of
- the source. */
- dstref->sizrange[0] = srcref->sizrange[0];
- dstref->sizrange[1] = srcref->sizrange[1];
- dstsize_set = true;
- }
- else if (srcref->sizrange[0] == 0 && srcref->sizrange[1] == maxobjsize)
- {
- /* When the size of the source access is unknown set it to the size
- of the destination first and adjust it later if necessary. */
- srcref->sizrange[0] = dstref->sizrange[0];
- srcref->sizrange[1] = dstref->sizrange[1];
-
- if (depends_p)
- {
- if (dstref->strbounded_p)
- {
- /* Read access by strncpy is constrained by the third
- argument but except for a zero bound is at least one. */
- srcref->sizrange[0] = bounds[1] > 0 ? 1 : 0;
- offset_int bound = wi::umin (srcref->basesize, bounds[1]);
- if (bound < srcref->sizrange[1])
- srcref->sizrange[1] = bound;
- }
- /* For string functions, adjust the size range of the source
- reference by the inverse boundaries of the offset (because
- the higher the offset into the string the shorter its
- length). */
- if (srcref->offrange[1] >= 0
- && srcref->offrange[1] < srcref->sizrange[0])
- srcref->sizrange[0] -= srcref->offrange[1];
- else
- srcref->sizrange[0] = 1;
-
- if (srcref->offrange[0] > 0)
- {
- if (srcref->offrange[0] < srcref->sizrange[1])
- srcref->sizrange[1] -= srcref->offrange[0];
- else
- srcref->sizrange[1] = 0;
- }
-
- dstadjust_p = true;
- }
- }
-
- if (detect_overlap == &builtin_access::generic_overlap)
- {
- if (dstref->strbounded_p)
- {
- dstref->sizrange[0] = bounds[0];
- dstref->sizrange[1] = bounds[1];
-
- if (dstref->sizrange[0] < srcref->sizrange[0])
- srcref->sizrange[0] = dstref->sizrange[0];
-
- if (dstref->sizrange[1] < srcref->sizrange[1])
- srcref->sizrange[1] = dstref->sizrange[1];
- }
- }
- else if (detect_overlap == &builtin_access::strcpy_overlap)
- {
- if (!dstref->strbounded_p)
- {
- /* For strcpy, adjust the destination size range to match that
- of the source computed above. */
- if (depends_p && dstadjust_p)
- {
- dstref->sizrange[0] = srcref->sizrange[0];
- dstref->sizrange[1] = srcref->sizrange[1];
- }
- }
- }
- else if (!dstsize_set && detect_overlap == &builtin_access::strcat_overlap)
- {
- dstref->sizrange[0] += srcref->sizrange[0] - 1;
- dstref->sizrange[1] += srcref->sizrange[1] - 1;
- }
-
- if (dstref->strbounded_p)
- {
- /* For strncpy, adjust the destination size range to match that
- of the source computed above. */
- dstref->sizrange[0] = bounds[0];
- dstref->sizrange[1] = bounds[1];
-
- if (bounds[0] < srcref->sizrange[0])
- srcref->sizrange[0] = bounds[0];
-
- if (bounds[1] < srcref->sizrange[1])
- srcref->sizrange[1] = bounds[1];
- }
-}
-
-offset_int
-builtin_access::overlap_size (const offset_int a[2], const offset_int b[2],
- offset_int *off)
-{
- const offset_int *p = a;
- const offset_int *q = b;
-
- /* Point P at the bigger of the two ranges and Q at the smaller. */
- if (wi::lts_p (a[1] - a[0], b[1] - b[0]))
- {
- p = b;
- q = a;
- }
-
- if (p[0] < q[0])
- {
- if (p[1] < q[0])
- return 0;
-
- *off = q[0];
- return wi::smin (p[1], q[1]) - q[0];
- }
-
- if (q[1] < p[0])
- return 0;
-
- off[0] = p[0];
- return q[1] - p[0];
-}
-
-/* Return true if the bounded mempry (memcpy amd similar) or string function
- access (strncpy and similar) ACS overlaps. */
-
-bool
-builtin_access::generic_overlap ()
-{
- builtin_access &acs = *this;
- const builtin_memref *dstref = acs.dstref;
- const builtin_memref *srcref = acs.srcref;
-
- gcc_assert (dstref->base == srcref->base);
-
- const offset_int maxobjsize = acs.dstref->maxobjsize;
-
- offset_int maxsize = dstref->basesize < 0 ? maxobjsize : dstref->basesize;
-
- /* Adjust the larger bounds of the offsets (which may be the first
- element if the lower bound is larger than the upper bound) to
- make them valid for the smallest access (if possible) but no smaller
- than the smaller bounds. */
- gcc_assert (wi::les_p (acs.dstoff[0], acs.dstoff[1]));
-
- if (maxsize < acs.dstoff[1] + acs.dstsiz[0])
- acs.dstoff[1] = maxsize - acs.dstsiz[0];
- if (acs.dstoff[1] < acs.dstoff[0])
- acs.dstoff[1] = acs.dstoff[0];
-
- gcc_assert (wi::les_p (acs.srcoff[0], acs.srcoff[1]));
-
- if (maxsize < acs.srcoff[1] + acs.srcsiz[0])
- acs.srcoff[1] = maxsize - acs.srcsiz[0];
- if (acs.srcoff[1] < acs.srcoff[0])
- acs.srcoff[1] = acs.srcoff[0];
-
- /* Determine the minimum and maximum space for the access given
- the offsets. */
- offset_int space[2];
- space[0] = wi::abs (acs.dstoff[0] - acs.srcoff[0]);
- space[1] = space[0];
-
- offset_int d = wi::abs (acs.dstoff[0] - acs.srcoff[1]);
- if (acs.srcsiz[0] > 0)
- {
- if (d < space[0])
- space[0] = d;
-
- if (space[1] < d)
- space[1] = d;
- }
- else
- space[1] = acs.dstsiz[1];
-
- d = wi::abs (acs.dstoff[1] - acs.srcoff[0]);
- if (d < space[0])
- space[0] = d;
-
- if (space[1] < d)
- space[1] = d;
-
- /* Treat raw memory functions both of whose references are bounded
- as special and permit uncertain overlaps to go undetected. For
- all kinds of constant offset and constant size accesses, if
- overlap isn't certain it is not possible. */
- bool overlap_possible = space[0] < acs.dstsiz[1];
- if (!overlap_possible)
- return false;
-
- bool overlap_certain = space[1] < acs.dstsiz[0];
-
- /* True when the size of one reference depends on the offset of
- the other. */
- bool depends_p = detect_overlap != &builtin_access::generic_overlap;
-
- if (!overlap_certain)
- {
- if (!dstref->strbounded_p && !depends_p)
- /* Memcpy only considers certain overlap. */
- return false;
-
- /* There's no way to distinguish an access to the same member
- of a structure from one to two distinct members of the same
- structure. Give up to avoid excessive false positives. */
- tree basetype = TREE_TYPE (dstref->base);
-
- if (POINTER_TYPE_P (basetype))
- basetype = TREE_TYPE (basetype);
- else
- while (TREE_CODE (basetype) == ARRAY_TYPE)
- basetype = TREE_TYPE (basetype);
-
- if (RECORD_OR_UNION_TYPE_P (basetype))
- return false;
- }
-
- /* True for stpcpy and strcpy. */
- bool stxcpy_p = (!dstref->strbounded_p
- && detect_overlap == &builtin_access::strcpy_overlap);
-
- if (dstref->refoff >= 0
- && srcref->refoff >= 0
- && dstref->refoff != srcref->refoff
- && (stxcpy_p || dstref->strbounded_p || srcref->strbounded_p))
- return false;
-
- offset_int siz[2] = { maxobjsize + 1, 0 };
-
- ovloff[0] = HOST_WIDE_INT_MAX;
- ovloff[1] = HOST_WIDE_INT_MIN;
-
- if (stxcpy_p)
- {
- /* Iterate over the extreme locations (on the horizontal axis formed
- by their offsets) and sizes of two regions and find their smallest
- and largest overlap and the corresponding offsets. */
- for (unsigned i = 0; i != 2; ++i)
- {
- const offset_int a[2] = {
- acs.dstoff[i], acs.dstoff[i] + acs.dstsiz[!i]
- };
-
- const offset_int b[2] = {
- acs.srcoff[i], acs.srcoff[i] + acs.srcsiz[!i]
- };
-
- offset_int off;
- offset_int sz = overlap_size (a, b, &off);
- if (sz < siz[0])
- siz[0] = sz;
-
- if (siz[1] <= sz)
- siz[1] = sz;
-
- if (sz != 0)
- {
- if (wi::lts_p (off, ovloff[0]))
- ovloff[0] = off.to_shwi ();
- if (wi::lts_p (ovloff[1], off))
- ovloff[1] = off.to_shwi ();
- }
- }
- }
- else
- {
- /* Iterate over the extreme locations (on the horizontal axis
- formed by their offsets) and sizes of the two regions and
- find their smallest and largest overlap and the corresponding
- offsets. */
-
- for (unsigned io = 0; io != 2; ++io)
- for (unsigned is = 0; is != 2; ++is)
- {
- const offset_int a[2] = {
- acs.dstoff[io], acs.dstoff[io] + acs.dstsiz[is]
- };
-
- for (unsigned jo = 0; jo != 2; ++jo)
- for (unsigned js = 0; js != 2; ++js)
- {
- const offset_int b[2] = {
- acs.srcoff[jo], acs.srcoff[jo] + acs.srcsiz[js]
- };
-
- offset_int off;
- offset_int sz = overlap_size (a, b, &off);
- if (sz < siz[0])
- siz[0] = sz;
-
- if (siz[1] <= sz)
- siz[1] = sz;
-
- if (sz != 0)
- {
- if (wi::lts_p (off, ovloff[0]))
- ovloff[0] = off.to_shwi ();
- if (wi::lts_p (ovloff[1], off))
- ovloff[1] = off.to_shwi ();
- }
- }
- }
- }
-
- ovlsiz[0] = siz[0].to_shwi ();
- ovlsiz[1] = siz[1].to_shwi ();
-
- /* Adjust the overlap offset range to reflect the overlap size range. */
- if (ovlsiz[0] == 0 && ovlsiz[1] > 1)
- ovloff[1] = ovloff[0] + ovlsiz[1] - 1;
-
- return true;
-}
-
-/* Return true if the strcat-like access overlaps. */
-
-bool
-builtin_access::strcat_overlap ()
-{
- builtin_access &acs = *this;
- const builtin_memref *dstref = acs.dstref;
- const builtin_memref *srcref = acs.srcref;
-
- gcc_assert (dstref->base == srcref->base);
-
- const offset_int maxobjsize = acs.dstref->maxobjsize;
-
- gcc_assert (dstref->base && dstref->base == srcref->base);
-
- /* Adjust for strcat-like accesses. */
-
- /* As a special case for strcat, set the DSTREF offsets to the length
- of the destination string since the function starts writing over
- its terminating nul, and set the destination size to 1 for the length
- of the nul. */
- acs.dstoff[0] += dstsiz[0] - srcref->sizrange[0];
- acs.dstoff[1] += dstsiz[1] - srcref->sizrange[1];
-
- bool strfunc_unknown_args = acs.dstsiz[0] == 0 && acs.dstsiz[1] != 0;
-
- /* The lower bound is zero when the size is unknown because then
- overlap is not certain. */
- acs.dstsiz[0] = strfunc_unknown_args ? 0 : 1;
- acs.dstsiz[1] = 1;
-
- offset_int maxsize = dstref->basesize < 0 ? maxobjsize : dstref->basesize;
-
- /* For references to the same base object, determine if there's a pair
- of valid offsets into the two references such that access between
- them doesn't overlap. Adjust both upper bounds to be valid for
- the smaller size (i.e., at most MAXSIZE - SIZE). */
-
- if (maxsize < acs.dstoff[1] + acs.dstsiz[0])
- acs.dstoff[1] = maxsize - acs.dstsiz[0];
-
- if (maxsize < acs.srcoff[1] + acs.srcsiz[0])
- acs.srcoff[1] = maxsize - acs.srcsiz[0];
-
- /* Check to see if there's enough space for both accesses without
- overlap. Determine the optimistic (maximum) amount of available
- space. */
- offset_int space;
- if (acs.dstoff[0] <= acs.srcoff[0])
- {
- if (acs.dstoff[1] < acs.srcoff[1])
- space = acs.srcoff[1] + acs.srcsiz[0] - acs.dstoff[0];
- else
- space = acs.dstoff[1] + acs.dstsiz[0] - acs.srcoff[0];
- }
- else
- space = acs.dstoff[1] + acs.dstsiz[0] - acs.srcoff[0];
-
- /* Overlap is certain if the distance between the farthest offsets
- of the opposite accesses is less than the sum of the lower bounds
- of the sizes of the two accesses. */
- bool overlap_certain = space < acs.dstsiz[0] + acs.srcsiz[0];
-
- /* For a constant-offset, constant size access, consider the largest
- distance between the offset bounds and the lower bound of the access
- size. If the overlap isn't certain return success. */
- if (!overlap_certain
- && acs.dstoff[0] == acs.dstoff[1]
- && acs.srcoff[0] == acs.srcoff[1]
- && acs.dstsiz[0] == acs.dstsiz[1]
- && acs.srcsiz[0] == acs.srcsiz[1])
- return false;
-
- /* Overlap is not certain but may be possible. */
-
- offset_int access_min = acs.dstsiz[0] + acs.srcsiz[0];
-
- /* Determine the conservative (minimum) amount of space. */
- space = wi::abs (acs.dstoff[0] - acs.srcoff[0]);
- offset_int d = wi::abs (acs.dstoff[0] - acs.srcoff[1]);
- if (d < space)
- space = d;
- d = wi::abs (acs.dstoff[1] - acs.srcoff[0]);
- if (d < space)
- space = d;
-
- /* For a strict test (used for strcpy and similar with unknown or
- variable bounds or sizes), consider the smallest distance between
- the offset bounds and either the upper bound of the access size
- if known, or the lower bound otherwise. */
- if (access_min <= space && (access_min != 0 || !strfunc_unknown_args))
- return false;
-
- /* When strcat overlap is certain it is always a single byte:
- the terminating NUL, regardless of offsets and sizes. When
- overlap is only possible its range is [0, 1]. */
- acs.ovlsiz[0] = dstref->sizrange[0] == dstref->sizrange[1] ? 1 : 0;
- acs.ovlsiz[1] = 1;
-
- offset_int endoff
- = dstref->offrange[0] + (dstref->sizrange[0] - srcref->sizrange[0]);
- if (endoff <= srcref->offrange[0])
- acs.ovloff[0] = wi::smin (maxobjsize, srcref->offrange[0]).to_shwi ();
- else
- acs.ovloff[0] = wi::smin (maxobjsize, endoff).to_shwi ();
-
- acs.sizrange[0] = wi::smax (wi::abs (endoff - srcref->offrange[0]) + 1,
- srcref->sizrange[0]).to_shwi ();
- if (dstref->offrange[0] == dstref->offrange[1])
- {
- if (srcref->offrange[0] == srcref->offrange[1])
- acs.ovloff[1] = acs.ovloff[0];
- else
- acs.ovloff[1]
- = wi::smin (maxobjsize,
- srcref->offrange[1] + srcref->sizrange[1]).to_shwi ();
- }
- else
- acs.ovloff[1]
- = wi::smin (maxobjsize,
- dstref->offrange[1] + dstref->sizrange[1]).to_shwi ();
-
- if (acs.sizrange[0] == 0)
- acs.sizrange[0] = 1;
- acs.sizrange[1] = wi::smax (acs.dstsiz[1], srcref->sizrange[1]).to_shwi ();
- return true;
-}
-
-/* Return true if the strcpy-like access overlaps. */
-
-bool
-builtin_access::strcpy_overlap ()
-{
- return generic_overlap ();
-}
-
-/* For a BASE of array type, clamp REFOFF to at most [0, BASE_SIZE]
- if known, or [0, MAXOBJSIZE] otherwise. */
-
-static void
-clamp_offset (tree base, offset_int refoff[2], offset_int maxobjsize)
-{
- if (!base || TREE_CODE (TREE_TYPE (base)) != ARRAY_TYPE)
- return;
-
- if (refoff[0] < 0 && refoff[1] >= 0)
- refoff[0] = 0;
-
- if (refoff[1] < refoff[0])
- {
- offset_int maxsize = maxobjsize;
- if (tree size = TYPE_SIZE_UNIT (TREE_TYPE (base)))
- maxsize = wi::to_offset (size);
-
- refoff[1] = wi::umin (refoff[1], maxsize);
- }
-}
-
-/* Return true if DSTREF and SRCREF describe accesses that either overlap
- one another or that, in order not to overlap, would imply that the size
- of the referenced object(s) exceeds the maximum size of an object. Set
- Otherwise, if DSTREF and SRCREF do not definitely overlap (even though
- they may overlap in a way that's not apparent from the available data),
- return false. */
-
-bool
-builtin_access::overlap ()
-{
- builtin_access &acs = *this;
-
- const offset_int maxobjsize = dstref->maxobjsize;
-
- acs.sizrange[0] = wi::smax (dstref->sizrange[0],
- srcref->sizrange[0]).to_shwi ();
- acs.sizrange[1] = wi::smax (dstref->sizrange[1],
- srcref->sizrange[1]).to_shwi ();
-
- /* Check to see if the two references refer to regions that are
- too large not to overlap in the address space (whose maximum
- size is PTRDIFF_MAX). */
- offset_int size = dstref->sizrange[0] + srcref->sizrange[0];
- if (maxobjsize < size)
- {
- acs.ovloff[0] = (maxobjsize - dstref->sizrange[0]).to_shwi ();
- acs.ovlsiz[0] = (size - maxobjsize).to_shwi ();
- return true;
- }
-
- /* If both base objects aren't known return the maximum possible
- offset that would make them not overlap. */
- if (!dstref->base || !srcref->base)
- return false;
-
- /* If the base object is an array adjust the bounds of the offset
- to be non-negative and within the bounds of the array if possible. */
- clamp_offset (dstref->base, acs.dstoff, maxobjsize);
-
- acs.srcoff[0] = srcref->offrange[0];
- acs.srcoff[1] = srcref->offrange[1];
-
- clamp_offset (srcref->base, acs.srcoff, maxobjsize);
-
- /* When the upper bound of the offset is less than the lower bound
- the former is the result of a negative offset being represented
- as a large positive value or vice versa. The resulting range is
- a union of two subranges: [MIN, UB] and [LB, MAX]. Since such
- a union is not representable using the current data structure
- replace it with the full range of offsets. */
- if (acs.dstoff[1] < acs.dstoff[0])
- {
- acs.dstoff[0] = -maxobjsize - 1;
- acs.dstoff[1] = maxobjsize;
- }
-
- /* Validate the offset and size of each reference on its own first.
- This is independent of whether or not the base objects are the
- same. Normally, this would have already been detected and
- diagnosed by -Warray-bounds, unless it has been disabled. */
- offset_int maxoff = acs.dstoff[0] + dstref->sizrange[0];
- if (maxobjsize < maxoff)
- {
- acs.ovlsiz[0] = (maxoff - maxobjsize).to_shwi ();
- acs.ovloff[0] = acs.dstoff[0].to_shwi () - acs.ovlsiz[0];
- return true;
- }
-
- /* Repeat the same as above but for the source offsets. */
- if (acs.srcoff[1] < acs.srcoff[0])
- {
- acs.srcoff[0] = -maxobjsize - 1;
- acs.srcoff[1] = maxobjsize;
- }
-
- maxoff = acs.srcoff[0] + srcref->sizrange[0];
- if (maxobjsize < maxoff)
- {
- acs.ovlsiz[0] = (maxoff - maxobjsize).to_shwi ();
- acs.ovlsiz[1] = (acs.srcoff[0] + srcref->sizrange[1]
- - maxobjsize).to_shwi ();
- acs.ovloff[0] = acs.srcoff[0].to_shwi () - acs.ovlsiz[0];
- return true;
- }
-
- if (dstref->base != srcref->base)
- return false;
-
- acs.dstsiz[0] = dstref->sizrange[0];
- acs.dstsiz[1] = dstref->sizrange[1];
-
- acs.srcsiz[0] = srcref->sizrange[0];
- acs.srcsiz[1] = srcref->sizrange[1];
-
- /* Call the appropriate function to determine the overlap. */
- if ((this->*detect_overlap) ())
- {
- if (!sizrange[1])
- {
- /* Unless the access size range has already been set, do so here. */
- sizrange[0] = wi::smax (acs.dstsiz[0], srcref->sizrange[0]).to_shwi ();
- sizrange[1] = wi::smax (acs.dstsiz[1], srcref->sizrange[1]).to_shwi ();
- }
- return true;
- }
-
- return false;
-}
-
-/* Attempt to detect and diagnose an overlapping copy in a call expression
- EXPR involving an access ACS to a built-in memory or string function.
- Return true when one has been detected, false otherwise. */
-
-static bool
-maybe_diag_overlap (location_t loc, gimple *call, builtin_access &acs)
-{
- if (!acs.overlap ())
- return false;
-
- if (warning_suppressed_p (call, OPT_Wrestrict))
- return true;
-
- /* For convenience. */
- const builtin_memref &dstref = *acs.dstref;
- const builtin_memref &srcref = *acs.srcref;
-
- /* Determine the range of offsets and sizes of the overlap if it
- exists and issue diagnostics. */
- HOST_WIDE_INT *ovloff = acs.ovloff;
- HOST_WIDE_INT *ovlsiz = acs.ovlsiz;
- HOST_WIDE_INT *sizrange = acs.sizrange;
-
- tree func = gimple_call_fndecl (call);
-
- /* To avoid a combinatorial explosion of diagnostics format the offsets
- or their ranges as strings and use them in the warning calls below. */
- char offstr[3][64];
-
- if (dstref.offrange[0] == dstref.offrange[1]
- || dstref.offrange[1] > HOST_WIDE_INT_MAX)
- sprintf (offstr[0], HOST_WIDE_INT_PRINT_DEC,
- dstref.offrange[0].to_shwi ());
- else
- sprintf (offstr[0],
- "[" HOST_WIDE_INT_PRINT_DEC ", " HOST_WIDE_INT_PRINT_DEC "]",
- dstref.offrange[0].to_shwi (),
- dstref.offrange[1].to_shwi ());
-
- if (srcref.offrange[0] == srcref.offrange[1]
- || srcref.offrange[1] > HOST_WIDE_INT_MAX)
- sprintf (offstr[1],
- HOST_WIDE_INT_PRINT_DEC,
- srcref.offrange[0].to_shwi ());
- else
- sprintf (offstr[1],
- "[" HOST_WIDE_INT_PRINT_DEC ", " HOST_WIDE_INT_PRINT_DEC "]",
- srcref.offrange[0].to_shwi (),
- srcref.offrange[1].to_shwi ());
-
- if (ovloff[0] == ovloff[1] || !ovloff[1])
- sprintf (offstr[2], HOST_WIDE_INT_PRINT_DEC, ovloff[0]);
- else
- sprintf (offstr[2],
- "[" HOST_WIDE_INT_PRINT_DEC ", " HOST_WIDE_INT_PRINT_DEC "]",
- ovloff[0], ovloff[1]);
-
- const offset_int maxobjsize = dstref.maxobjsize;
- bool must_overlap = ovlsiz[0] > 0;
-
- if (ovlsiz[1] == 0)
- ovlsiz[1] = ovlsiz[0];
-
- if (must_overlap)
- {
- /* Issue definitive "overlaps" diagnostic in this block. */
-
- if (sizrange[0] == sizrange[1])
- {
- if (ovlsiz[0] == ovlsiz[1])
- warning_at (loc, OPT_Wrestrict,
- sizrange[0] == 1
- ? (ovlsiz[0] == 1
- ? G_("%qD accessing %wu byte at offsets %s "
- "and %s overlaps %wu byte at offset %s")
- : G_("%qD accessing %wu byte at offsets %s "
- "and %s overlaps %wu bytes at offset "
- "%s"))
- : (ovlsiz[0] == 1
- ? G_("%qD accessing %wu bytes at offsets %s "
- "and %s overlaps %wu byte at offset %s")
- : G_("%qD accessing %wu bytes at offsets %s "
- "and %s overlaps %wu bytes at offset "
- "%s")),
- func, sizrange[0],
- offstr[0], offstr[1], ovlsiz[0], offstr[2]);
- else if (ovlsiz[1] >= 0 && ovlsiz[1] < maxobjsize.to_shwi ())
- warning_n (loc, OPT_Wrestrict, sizrange[0],
- "%qD accessing %wu byte at offsets %s "
- "and %s overlaps between %wu and %wu bytes "
- "at offset %s",
- "%qD accessing %wu bytes at offsets %s "
- "and %s overlaps between %wu and %wu bytes "
- "at offset %s",
- func, sizrange[0], offstr[0], offstr[1],
- ovlsiz[0], ovlsiz[1], offstr[2]);
- else
- warning_n (loc, OPT_Wrestrict, sizrange[0],
- "%qD accessing %wu byte at offsets %s and "
- "%s overlaps %wu or more bytes at offset %s",
- "%qD accessing %wu bytes at offsets %s and "
- "%s overlaps %wu or more bytes at offset %s",
- func, sizrange[0],
- offstr[0], offstr[1], ovlsiz[0], offstr[2]);
- return true;
- }
-
- if (sizrange[1] >= 0 && sizrange[1] < maxobjsize.to_shwi ())
- {
- if (ovlsiz[0] == ovlsiz[1])
- warning_n (loc, OPT_Wrestrict, ovlsiz[0],
- "%qD accessing between %wu and %wu bytes "
- "at offsets %s and %s overlaps %wu byte at "
- "offset %s",
- "%qD accessing between %wu and %wu bytes "
- "at offsets %s and %s overlaps %wu bytes "
- "at offset %s",
- func, sizrange[0], sizrange[1],
- offstr[0], offstr[1], ovlsiz[0], offstr[2]);
- else if (ovlsiz[1] >= 0 && ovlsiz[1] < maxobjsize.to_shwi ())
- warning_at (loc, OPT_Wrestrict,
- "%qD accessing between %wu and %wu bytes at "
- "offsets %s and %s overlaps between %wu and %wu "
- "bytes at offset %s",
- func, sizrange[0], sizrange[1],
- offstr[0], offstr[1], ovlsiz[0], ovlsiz[1],
- offstr[2]);
- else
- warning_at (loc, OPT_Wrestrict,
- "%qD accessing between %wu and %wu bytes at "
- "offsets %s and %s overlaps %wu or more bytes "
- "at offset %s",
- func, sizrange[0], sizrange[1],
- offstr[0], offstr[1], ovlsiz[0], offstr[2]);
- return true;
- }
-
- if (ovlsiz[0] != ovlsiz[1])
- ovlsiz[1] = maxobjsize.to_shwi ();
-
- if (ovlsiz[0] == ovlsiz[1])
- warning_n (loc, OPT_Wrestrict, ovlsiz[0],
- "%qD accessing %wu or more bytes at offsets "
- "%s and %s overlaps %wu byte at offset %s",
- "%qD accessing %wu or more bytes at offsets "
- "%s and %s overlaps %wu bytes at offset %s",
- func, sizrange[0], offstr[0], offstr[1],
- ovlsiz[0], offstr[2]);
- else if (ovlsiz[1] >= 0 && ovlsiz[1] < maxobjsize.to_shwi ())
- warning_at (loc, OPT_Wrestrict,
- "%qD accessing %wu or more bytes at offsets %s "
- "and %s overlaps between %wu and %wu bytes "
- "at offset %s",
- func, sizrange[0], offstr[0], offstr[1],
- ovlsiz[0], ovlsiz[1], offstr[2]);
- else
- warning_at (loc, OPT_Wrestrict,
- "%qD accessing %wu or more bytes at offsets %s "
- "and %s overlaps %wu or more bytes at offset %s",
- func, sizrange[0], offstr[0], offstr[1],
- ovlsiz[0], offstr[2]);
- return true;
- }
-
- /* Use more concise wording when one of the offsets is unbounded
- to avoid confusing the user with large and mostly meaningless
- numbers. */
- bool open_range;
- if (DECL_P (dstref.base) && TREE_CODE (TREE_TYPE (dstref.base)) == ARRAY_TYPE)
- open_range = ((dstref.offrange[0] == 0
- && dstref.offrange[1] == maxobjsize)
- || (srcref.offrange[0] == 0
- && srcref.offrange[1] == maxobjsize));
- else
- open_range = ((dstref.offrange[0] == -maxobjsize - 1
- && dstref.offrange[1] == maxobjsize)
- || (srcref.offrange[0] == -maxobjsize - 1
- && srcref.offrange[1] == maxobjsize));
-
- if (sizrange[0] == sizrange[1] || sizrange[1] == 1)
- {
- if (ovlsiz[1] == 1)
- {
- if (open_range)
- warning_n (loc, OPT_Wrestrict, sizrange[1],
- "%qD accessing %wu byte may overlap "
- "%wu byte",
- "%qD accessing %wu bytes may overlap "
- "%wu byte",
- func, sizrange[1], ovlsiz[1]);
- else
- warning_n (loc, OPT_Wrestrict, sizrange[1],
- "%qD accessing %wu byte at offsets %s "
- "and %s may overlap %wu byte at offset %s",
- "%qD accessing %wu bytes at offsets %s "
- "and %s may overlap %wu byte at offset %s",
- func, sizrange[1], offstr[0], offstr[1],
- ovlsiz[1], offstr[2]);
- return true;
- }
-
- if (open_range)
- warning_n (loc, OPT_Wrestrict, sizrange[1],
- "%qD accessing %wu byte may overlap "
- "up to %wu bytes",
- "%qD accessing %wu bytes may overlap "
- "up to %wu bytes",
- func, sizrange[1], ovlsiz[1]);
- else
- warning_n (loc, OPT_Wrestrict, sizrange[1],
- "%qD accessing %wu byte at offsets %s and "
- "%s may overlap up to %wu bytes at offset %s",
- "%qD accessing %wu bytes at offsets %s and "
- "%s may overlap up to %wu bytes at offset %s",
- func, sizrange[1], offstr[0], offstr[1],
- ovlsiz[1], offstr[2]);
- return true;
- }
-
- if (sizrange[1] >= 0 && sizrange[1] < maxobjsize.to_shwi ())
- {
- if (open_range)
- warning_n (loc, OPT_Wrestrict, ovlsiz[1],
- "%qD accessing between %wu and %wu bytes "
- "may overlap %wu byte",
- "%qD accessing between %wu and %wu bytes "
- "may overlap up to %wu bytes",
- func, sizrange[0], sizrange[1], ovlsiz[1]);
- else
- warning_n (loc, OPT_Wrestrict, ovlsiz[1],
- "%qD accessing between %wu and %wu bytes "
- "at offsets %s and %s may overlap %wu byte "
- "at offset %s",
- "%qD accessing between %wu and %wu bytes "
- "at offsets %s and %s may overlap up to %wu "
- "bytes at offset %s",
- func, sizrange[0], sizrange[1],
- offstr[0], offstr[1], ovlsiz[1], offstr[2]);
- return true;
- }
-
- warning_n (loc, OPT_Wrestrict, ovlsiz[1],
- "%qD accessing %wu or more bytes at offsets %s "
- "and %s may overlap %wu byte at offset %s",
- "%qD accessing %wu or more bytes at offsets %s "
- "and %s may overlap up to %wu bytes at offset %s",
- func, sizrange[0], offstr[0], offstr[1],
- ovlsiz[1], offstr[2]);
-
- return true;
-}
-
-/* Validate REF size and offsets in an expression passed as an argument
- to a CALL to a built-in function FUNC to make sure they are within
- the bounds of the referenced object if its size is known, or
- PTRDIFF_MAX otherwise. DO_WARN is true when a diagnostic should
- be issued, false otherwise.
- Both initial values of the offsets and their final value computed
- by the function by incrementing the initial value by the size are
- validated. Return the warning number if the offsets are not valid
- and a diagnostic has been issued, or would have been issued if
- DO_WARN had been true, otherwise an invalid warning number. */
-
-static opt_code
-maybe_diag_access_bounds (gimple *call, tree func, int strict,
- const builtin_memref &ref, offset_int wroff,
- bool do_warn)
-{
- location_t loc = gimple_location (call);
- const offset_int maxobjsize = ref.maxobjsize;
-
- /* Check for excessive size first and regardless of warning options
- since the result is used to make codegen decisions. */
- if (ref.sizrange[0] > maxobjsize)
- {
- const opt_code opt = OPT_Wstringop_overflow_;
- /* Return true without issuing a warning. */
- if (!do_warn)
- return opt;
-
- if (ref.ref && warning_suppressed_p (ref.ref, OPT_Wstringop_overflow_))
- return no_warning;
-
- bool warned = false;
- if (warn_stringop_overflow)
- {
- if (ref.sizrange[0] == ref.sizrange[1])
- warned = warning_at (loc, opt,
- "%qD specified bound %wu "
- "exceeds maximum object size %wu",
- func, ref.sizrange[0].to_uhwi (),
- maxobjsize.to_uhwi ());
- else
- warned = warning_at (loc, opt,
- "%qD specified bound between %wu and %wu "
- "exceeds maximum object size %wu",
- func, ref.sizrange[0].to_uhwi (),
- ref.sizrange[1].to_uhwi (),
- maxobjsize.to_uhwi ());
- return warned ? opt : no_warning;
- }
- }
-
- /* Check for out-bounds pointers regardless of warning options since
- the result is used to make codegen decisions. An excessive WROFF
- can only come up as a result of an invalid strncat bound and is
- diagnosed separately using a more meaningful warning. */
- if (maxobjsize < wroff)
- wroff = 0;
- offset_int ooboff[] = { ref.offrange[0], ref.offrange[1], wroff };
- tree oobref = ref.offset_out_of_bounds (strict, ooboff);
- if (!oobref)
- return no_warning;
-
- const opt_code opt = OPT_Warray_bounds;
- /* Return true without issuing a warning. */
- if (!do_warn)
- return opt;
-
- if (!warn_array_bounds)
- return no_warning;
-
- if (warning_suppressed_p (ref.ptr, opt)
- || (ref.ref && warning_suppressed_p (ref.ref, opt)))
- return no_warning;
-
- char rangestr[2][64];
- if (ooboff[0] == ooboff[1]
- || (ooboff[0] != ref.offrange[0]
- && ooboff[0].to_shwi () >= ooboff[1].to_shwi ()))
- sprintf (rangestr[0], "%lli", (long long) ooboff[0].to_shwi ());
- else
- sprintf (rangestr[0], "[%lli, %lli]",
- (long long) ooboff[0].to_shwi (),
- (long long) ooboff[1].to_shwi ());
-
- bool warned = false;
-
- if (oobref == error_mark_node)
- {
- if (ref.sizrange[0] == ref.sizrange[1])
- sprintf (rangestr[1], "%llu",
- (unsigned long long) ref.sizrange[0].to_shwi ());
- else
- sprintf (rangestr[1], "[%lli, %lli]",
- (unsigned long long) ref.sizrange[0].to_uhwi (),
- (unsigned long long) ref.sizrange[1].to_uhwi ());
-
- tree type;
-
- if (DECL_P (ref.base)
- && TREE_CODE (type = TREE_TYPE (ref.base)) == ARRAY_TYPE)
- {
- auto_diagnostic_group d;
- if (warning_at (loc, opt,
- "%qD pointer overflow between offset %s "
- "and size %s accessing array %qD with type %qT",
- func, rangestr[0], rangestr[1], ref.base, type))
- {
- inform (DECL_SOURCE_LOCATION (ref.base),
- "array %qD declared here", ref.base);
- warned = true;
- }
- else
- warned = warning_at (loc, opt,
- "%qD pointer overflow between offset %s "
- "and size %s",
- func, rangestr[0], rangestr[1]);
- }
- else
- warned = warning_at (loc, opt,
- "%qD pointer overflow between offset %s "
- "and size %s",
- func, rangestr[0], rangestr[1]);
- }
- else if (oobref == ref.base)
- {
- /* True when the offset formed by an access to the reference
- is out of bounds, rather than the initial offset wich is
- in bounds. This implies access past the end. */
- bool form = ooboff[0] != ref.offrange[0];
-
- if (DECL_P (ref.base))
- {
- auto_diagnostic_group d;
- if ((ref.basesize < maxobjsize
- && warning_at (loc, opt,
- form
- ? G_("%qD forming offset %s is out of "
- "the bounds [0, %wu] of object %qD with "
- "type %qT")
- : G_("%qD offset %s is out of the bounds "
- "[0, %wu] of object %qD with type %qT"),
- func, rangestr[0], ref.basesize.to_uhwi (),
- ref.base, TREE_TYPE (ref.base)))
- || warning_at (loc, opt,
- form
- ? G_("%qD forming offset %s is out of "
- "the bounds of object %qD with type %qT")
- : G_("%qD offset %s is out of the bounds "
- "of object %qD with type %qT"),
- func, rangestr[0],
- ref.base, TREE_TYPE (ref.base)))
- {
- inform (DECL_SOURCE_LOCATION (ref.base),
- "%qD declared here", ref.base);
- warned = true;
- }
- }
- else if (ref.basesize < maxobjsize)
- warned = warning_at (loc, opt,
- form
- ? G_("%qD forming offset %s is out "
- "of the bounds [0, %wu]")
- : G_("%qD offset %s is out "
- "of the bounds [0, %wu]"),
- func, rangestr[0], ref.basesize.to_uhwi ());
- else
- warned = warning_at (loc, opt,
- form
- ? G_("%qD forming offset %s is out of bounds")
- : G_("%qD offset %s is out of bounds"),
- func, rangestr[0]);
- }
- else if (TREE_CODE (ref.ref) == MEM_REF)
- {
- tree refop = TREE_OPERAND (ref.ref, 0);
- tree type = TREE_TYPE (refop);
- if (POINTER_TYPE_P (type))
- type = TREE_TYPE (type);
- type = TYPE_MAIN_VARIANT (type);
-
- if (warning_at (loc, opt,
- "%qD offset %s from the object at %qE is out "
- "of the bounds of %qT",
- func, rangestr[0], ref.base, type))
- {
- if (TREE_CODE (ref.ref) == COMPONENT_REF)
- refop = TREE_OPERAND (ref.ref, 1);
- if (DECL_P (refop))
- inform (DECL_SOURCE_LOCATION (refop),
- "subobject %qD declared here", refop);
- warned = true;
- }
- }
- else
- {
- tree refop = TREE_OPERAND (ref.ref, 0);
- tree type = TYPE_MAIN_VARIANT (TREE_TYPE (ref.ref));
-
- if (warning_at (loc, opt,
- "%qD offset %s from the object at %qE is out "
- "of the bounds of referenced subobject %qD with "
- "type %qT at offset %wi",
- func, rangestr[0], ref.base,
- TREE_OPERAND (ref.ref, 1), type,
- ref.refoff.to_shwi ()))
- {
- if (TREE_CODE (ref.ref) == COMPONENT_REF)
- refop = TREE_OPERAND (ref.ref, 1);
- if (DECL_P (refop))
- inform (DECL_SOURCE_LOCATION (refop),
- "subobject %qD declared here", refop);
- warned = true;
- }
- }
-
- return warned ? opt : no_warning;
-}
-
-/* Check a CALL statement for restrict-violations and issue warnings
- if/when appropriate. */
-
-static void
-check_call (range_query *query, gimple *call)
-{
- /* Avoid checking the call if it has already been diagnosed for
- some reason. */
- if (warning_suppressed_p (call, OPT_Wrestrict))
- return;
-
- tree func = gimple_call_fndecl (call);
- if (!func || !fndecl_built_in_p (func, BUILT_IN_NORMAL))
- return;
-
- /* Argument number to extract from the call (depends on the built-in
- and its kind). */
- unsigned dst_idx = -1;
- unsigned src_idx = -1;
- unsigned bnd_idx = -1;
-
- /* Is this CALL to a string function (as opposed to one to a raw
- memory function). */
- bool strfun = true;
-
- switch (DECL_FUNCTION_CODE (func))
- {
- 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:
- strfun = false;
- /* Fall through. */
-
- case BUILT_IN_STPNCPY:
- case BUILT_IN_STPNCPY_CHK:
- case BUILT_IN_STRNCAT:
- case BUILT_IN_STRNCAT_CHK:
- case BUILT_IN_STRNCPY:
- case BUILT_IN_STRNCPY_CHK:
- dst_idx = 0;
- src_idx = 1;
- bnd_idx = 2;
- break;
-
- case BUILT_IN_MEMSET:
- case BUILT_IN_MEMSET_CHK:
- dst_idx = 0;
- bnd_idx = 2;
- break;
-
- case BUILT_IN_STPCPY:
- case BUILT_IN_STPCPY_CHK:
- case BUILT_IN_STRCPY:
- case BUILT_IN_STRCPY_CHK:
- case BUILT_IN_STRCAT:
- case BUILT_IN_STRCAT_CHK:
- dst_idx = 0;
- src_idx = 1;
- break;
-
- default:
- /* Handle other string functions here whose access may need
- to be validated for in-bounds offsets and non-overlapping
- copies. */
- return;
- }
-
- unsigned nargs = gimple_call_num_args (call);
-
- tree dst = dst_idx < nargs ? gimple_call_arg (call, dst_idx) : NULL_TREE;
- tree src = src_idx < nargs ? gimple_call_arg (call, src_idx) : NULL_TREE;
- tree dstwr = bnd_idx < nargs ? gimple_call_arg (call, bnd_idx) : NULL_TREE;
-
- /* For string functions with an unspecified or unknown bound,
- assume the size of the access is one. */
- if (!dstwr && strfun)
- dstwr = size_one_node;
-
- /* DST and SRC can be null for a call with an insufficient number
- of arguments to a built-in function declared without a protype. */
- if (!dst || (src_idx < nargs && !src))
- return;
-
- /* DST, SRC, or DSTWR can also have the wrong type in a call to
- a function declared without a prototype. Avoid checking such
- invalid calls. */
- if (TREE_CODE (TREE_TYPE (dst)) != POINTER_TYPE
- || (src && TREE_CODE (TREE_TYPE (src)) != POINTER_TYPE)
- || (dstwr && !INTEGRAL_TYPE_P (TREE_TYPE (dstwr))))
- return;
-
- opt_code opt = check_bounds_or_overlap (query, call, dst, src, dstwr,
- NULL_TREE);
- /* Avoid diagnosing the call again. */
- suppress_warning (call, opt);
-}
-
-} /* anonymous namespace */
-
-/* Attempt to detect and diagnose invalid offset bounds and (except for
- memmove) overlapping copy in a call expression EXPR from SRC to DST
- and DSTSIZE and SRCSIZE bytes, respectively. Both DSTSIZE and
- SRCSIZE may be NULL. DO_WARN is false to detect either problem
- without issue a warning. Return the OPT_Wxxx constant corresponding
- to the warning if one has been detected and zero otherwise. */
-
-opt_code
-check_bounds_or_overlap (gimple *call, tree dst, tree src, tree dstsize,
- tree srcsize, bool bounds_only /* = false */,
- bool do_warn /* = true */)
-{
- return check_bounds_or_overlap (/*range_query=*/NULL,
- call, dst, src, dstsize, srcsize,
- bounds_only, do_warn);
-}
-
-opt_code
-check_bounds_or_overlap (range_query *query,
- gimple *call, tree dst, tree src, tree dstsize,
- tree srcsize, bool bounds_only /* = false */,
- bool do_warn /* = true */)
-{
- tree func = gimple_call_fndecl (call);
-
- builtin_memref dstref (query, call, dst, dstsize);
- builtin_memref srcref (query, call, src, srcsize);
-
- /* Create a descriptor of the access. This may adjust both DSTREF
- and SRCREF based on one another and the kind of the access. */
- builtin_access acs (query, call, dstref, srcref);
-
- /* Set STRICT to the value of the -Warray-bounds=N argument for
- string functions or when N > 1. */
- int strict = (acs.strict () || warn_array_bounds > 1 ? warn_array_bounds : 0);
-
- /* The starting offset of the destination write access. Nonzero only
- for the strcat family of functions. */
- offset_int wroff = acs.write_off (dstsize);
-
- /* Validate offsets to each reference before the access first to make
- sure they are within the bounds of the destination object if its
- size is known, or PTRDIFF_MAX otherwise. */
- opt_code opt
- = maybe_diag_access_bounds (call, func, strict, dstref, wroff, do_warn);
- if (opt == no_warning)
- opt = maybe_diag_access_bounds (call, func, strict, srcref, 0, do_warn);
-
- if (opt != no_warning)
- {
- if (do_warn)
- suppress_warning (call, opt);
- return opt;
- }
-
- if (!warn_restrict || bounds_only || !src)
- return no_warning;
-
- if (!bounds_only)
- {
- switch (DECL_FUNCTION_CODE (func))
- {
- case BUILT_IN_MEMMOVE:
- case BUILT_IN_MEMMOVE_CHK:
- case BUILT_IN_MEMSET:
- case BUILT_IN_MEMSET_CHK:
- return no_warning;
- default:
- break;
- }
- }
-
- location_t loc = gimple_location (call);
- if (operand_equal_p (dst, src, 0))
- {
- /* Issue -Wrestrict unless the pointers are null (those do
- not point to objects and so do not indicate an overlap;
- such calls could be the result of sanitization and jump
- threading). */
- if (!integer_zerop (dst) && !warning_suppressed_p (call, OPT_Wrestrict))
- {
- warning_at (loc, OPT_Wrestrict,
- "%qD source argument is the same as destination",
- func);
- suppress_warning (call, OPT_Wrestrict);
- return OPT_Wrestrict;
- }
-
- return no_warning;
- }
-
- /* Return false when overlap has been detected. */
- if (maybe_diag_overlap (loc, call, acs))
- {
- suppress_warning (call, OPT_Wrestrict);
- return OPT_Wrestrict;
- }
-
- return no_warning;
-}
-
-gimple_opt_pass *
-make_pass_warn_restrict (gcc::context *ctxt)
-{
- return new pass_wrestrict (ctxt);
-}
-
-DEBUG_FUNCTION void
-dump_builtin_memref (FILE *fp, const builtin_memref &ref)
-{
- fprintf (fp, "\n ptr = ");
- print_generic_expr (fp, ref.ptr, TDF_LINENO);
- fprintf (fp, "\n ref = ");
- if (ref.ref)
- print_generic_expr (fp, ref.ref, TDF_LINENO);
- else
- fputs ("null", fp);
- fprintf (fp, "\n base = ");
- print_generic_expr (fp, ref.base, TDF_LINENO);
- fprintf (fp,
- "\n basesize = %lli"
- "\n refsize = %lli"
- "\n refoff = %lli"
- "\n offrange = [%lli, %lli]"
- "\n sizrange = [%lli, %lli]"
- "\n strbounded_p = %s\n",
- (long long)ref.basesize.to_shwi (),
- (long long)ref.refsize.to_shwi (),
- (long long)ref.refoff.to_shwi (),
- (long long)ref.offrange[0].to_shwi (),
- (long long)ref.offrange[1].to_shwi (),
- (long long)ref.sizrange[0].to_shwi (),
- (long long)ref.sizrange[1].to_shwi (),
- ref.strbounded_p ? "true" : "false");
-}
-
-void
-builtin_access::dump (FILE *fp) const
-{
- fprintf (fp, " dstref:");
- dump_builtin_memref (fp, *dstref);
- fprintf (fp, "\n srcref:");
- dump_builtin_memref (fp, *srcref);
-
- fprintf (fp,
- " sizrange = [%lli, %lli]\n"
- " ovloff = [%lli, %lli]\n"
- " ovlsiz = [%lli, %lli]\n"
- " dstoff = [%lli, %lli]\n"
- " dstsiz = [%lli, %lli]\n"
- " srcoff = [%lli, %lli]\n"
- " srcsiz = [%lli, %lli]\n",
- (long long)sizrange[0], (long long)sizrange[1],
- (long long)ovloff[0], (long long)ovloff[1],
- (long long)ovlsiz[0], (long long)ovlsiz[1],
- (long long)dstoff[0].to_shwi (), (long long)dstoff[1].to_shwi (),
- (long long)dstsiz[0].to_shwi (), (long long)dstsiz[1].to_shwi (),
- (long long)srcoff[0].to_shwi (), (long long)srcoff[1].to_shwi (),
- (long long)srcsiz[0].to_shwi (), (long long)srcsiz[1].to_shwi ());
-}
-
-DEBUG_FUNCTION void
-dump_builtin_access (FILE *fp, gimple *stmt, const builtin_access &acs)
-{
- if (stmt)
- {
- fprintf (fp, "\nDumping builtin_access for ");
- print_gimple_expr (fp, stmt, TDF_LINENO);
- fputs (":\n", fp);
- }
-
- acs.dump (fp);
-}
-
-DEBUG_FUNCTION void
-debug (gimple *stmt, const builtin_access &acs)
-{
- dump_builtin_access (stdout, stmt, acs);
-}
generated by cgit v1.1 at 2025-09-01 17:19:56 +0000