https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77452
Bug ID: 77452 Summary: [7 Regression] ICE: in plus_constant, at explow.c:87 with -fno-split-wide-types -mavx512f --param=max-combine-insns=2 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 39539 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39539&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O -fno-split-wide-types -mavx512f --param=max-combine-insns=2 testcase.c testcase.c: In function 'foo': testcase.c:10:1: internal compiler error: in plus_constant, at explow.c:87 } ^ 0x8377af plus_constant(machine_mode, rtx_def*, long, bool) /repo/gcc-trunk/gcc/explow.c:87 0x83756d plus_constant(machine_mode, rtx_def*, long, bool) /repo/gcc-trunk/gcc/explow.c:109 0x6ed9bd init_alias_analysis() /repo/gcc-trunk/gcc/alias.c:3359 0x9cba44 ira /repo/gcc-trunk/gcc/ira.c:5174 0x9cba44 execute /repo/gcc-trunk/gcc/ira.c:5526 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-latest-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-239934-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-239934-checking-yes-rtl-df-extra-nographite-amd64 Thread model: posix gcc version 7.0.0 20160901 (experimental) (GCC) Tested revisions: trunk r239934 - ICE 6-branch r239849 - OK