https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70329
Bug ID: 70329 Summary: wrong code with -mavx512bw and 64byte vectors Product: gcc Version: 6.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Target: x86_64-pc-linux-gnu Created attachment 38041 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38041&action=edit reduced testcase Output (using emulator): $ gcc -mavx512bw testcase.c $ sde64 -- ./a.out 2 Aborted $ gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-234350-checking-yes-rtl-df-nographite/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-234350-checking-yes-rtl-df-nographite Thread model: posix gcc version 6.0.0 20160319 (experimental) (GCC) Tested revisions: trunk r234350 - FAIL 5-branch r234210 - FAIL 4_9-branch - -mavx512bw is not recognised