https://sourceware.org/bugzilla/show_bug.cgi?id=32403
--- Comment #10 from Sourceware Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Haochen Jiang <jian...@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4c0a6e603743ca0c85f9ceb9913d646f0c961986 commit 4c0a6e603743ca0c85f9ceb9913d646f0c961986 Author: H.J. Lu <hjl.to...@gmail.com> Date: Mon Dec 2 12:58:33 2024 +0800 x86: Eliminate unnecessary {evex} prefixes For several instructions including vps{l,r}l{d,q,w,dq} and vpsra{d,w}, their VEX part do not have the following version: vpsrlw $0x1f,(%r15,%rcx,4),%xmm0 Thus, {evex} prefix should not be inserted when their second operand is memory, while we still need them for register as second operand. Add a new macro %ME to solve this problem. For vpsraq, there is no VEX version, so the {evex} prefix should always be eliminated. gas/ChangeLog: PR binutils/32403 * testsuite/gas/i386/i386.exp: Run new test. * testsuite/gas/i386/x86-64.exp: Ditto. * testsuite/gas/i386/evex-only.d: New test. * testsuite/gas/i386/evex-only.s: Ditto. * testsuite/gas/i386/x86-64-evex-only.d: Ditto. * testsuite/gas/i386/x86-64-evex-only.s: Ditto. opcodes/ChangeLog: PR binutils/32403 * i386-dis-evex-reg.h: Use %ME instead of %XE for vps{l,r}l{w,dq} and vpsraw. Split table for vpsra{d,q}. * i386-dis-evex-w.h: Use %ME instead of %XE for vps{l,r}l{d,q} and vpsrad. Eliminate vpsraq {evex} prefix. * i386-dis-evex.h: Split table for vpsra{d,q}. * i386-dis.c: (EVEX_W_0F72_R_4): New. (EVEX_W_0FE2): Ditto. (struct dis386): Add comment for %ME. (putop): Handle %ME. Co-authored-by: Haochen Jiang <haochen.ji...@intel.com> Signed-off-by: H.J. Lu <hjl.to...@gmail.com> -- You are receiving this mail because: You are on the CC list for the bug.
