https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77527
Bug ID: 77527 Summary: [7 Regression] ICE: in make_decl_rtl, at varasm.c:1311 with -mstringop-strategy=libcall Product: gcc Version: 7.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Build: x86_64-pc-linux-gnu Created attachment 39584 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39584&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -fno-tree-copy-prop -fno-tree-dominator-opts -fno-tree-forwprop -fno-tree-fre -mstringop-strategy=libcall testcase.c -Wno-psabi testcase.c: In function 'foo': testcase.c:13:1: internal compiler error: in make_decl_rtl, at varasm.c:1311 } ^ 0xed0887 make_decl_rtl(tree_node*) /repo/gcc-trunk/gcc/varasm.c:1307 0x6ed404 nonoverlapping_memrefs_p(rtx_def const*, rtx_def const*, bool) /repo/gcc-trunk/gcc/alias.c:2757 0x6eef34 true_dependence_1 /repo/gcc-trunk/gcc/alias.c:2924 0x149a018 check_mem_read_rtx /repo/gcc-trunk/gcc/dse.c:2039 0x149a018 check_mem_read_use /repo/gcc-trunk/gcc/dse.c:2160 0xb5b154 note_uses(rtx_def**, void (*)(rtx_def**, void*), void*) /repo/gcc-trunk/gcc/rtlanal.c:1934 0x149b498 scan_insn /repo/gcc-trunk/gcc/dse.c:2266 0x149c72f dse_step1 /repo/gcc-trunk/gcc/dse.c:2525 0x149c72f rest_of_handle_dse /repo/gcc-trunk/gcc/dse.c:3413 0x149c72f execute /repo/gcc-trunk/gcc/dse.c:3511 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions. $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-trunk-240036-checking-yes-rtl-df-extra-nographite-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-240036-checking-yes-rtl-df-extra-nographite-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --without-cloog --without-ppl --without-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-240036-checking-yes-rtl-df-extra-nographite-amd64 Thread model: posix gcc version 7.0.0 20160908 (experimental) (GCC) Tested revisions: r240036 - ICE 6-branch r239849 - OK