This is basically the same as this: https://sourceware.org/bugzilla/show_bug.cgi?id=23188 ... but for AVX512. I'm seeing this when running gdb.reverse/step-precsave.exp on a CPU with AVX512 support (AMD EPYC 9634) on Debian 12 (bookworm): continue^M Continuing.^M Process record does not support instruction bound.^M Process record does not support instruction 0x62 at address 0x7ffff7f49b40.^M Process record: failed to record execution log.^M ^M Program stopped.^M 0x00007ffff7f49b40 in ?? () from /lib/x86_64-linux-gnu/libc.so.6^M (gdb) FAIL: gdb.reverse/step-precsave.exp: run to end of main
The master branch has been updated by Simon Marchi <simark@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4fd1ba162ed6f197169d2af29f4230d7a89e2636 commit 4fd1ba162ed6f197169d2af29f4230d7a89e2636 Author: Simon Marchi <simon.marchi@efficios.com> Date: Tue Aug 29 12:19:02 2023 -0400 gdb/testsuite: recognize one more unsupported instruction in gdb.reverse/step-precsave.exp When running this test on a processor that supports AVX512 (AMD EPYC 9634) on Debian 12 bookwork (system compiler is gcc 12.2.0), I see: continue^M Continuing.^M Process record does not support instruction bound.^M Process record does not support instruction 0x62 at address 0x7ffff7f49b40.^M Process record: failed to record execution log.^M ^M Program stopped.^M 0x00007ffff7f49b40 in ?? () from /lib/x86_64-linux-gnu/libc.so.6^M (gdb) FAIL: gdb.reverse/step-precsave.exp: run to end of main The instruction at this address is: 0x00007ffff7f49b40: 62 e2 7d 48 7a c6 vpbroadcastb %esi,%zmm16 This seems like an AVX512 instruction (given the use of zmm16). Match this byte value in order to produce a KFAIL. Change-Id: I1d20357fa538ba60b9c537160acf511a37d751ee Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30807 Approved-By: Tom Tromey <tom@tromey.com>