diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2024-12-02 12:58:33 +0800 |
|---|---|---|
| committer | Haochen Jiang <haochen.jiang@intel.com> | 2024-12-05 09:57:59 +0800 |
| commit | 4c0a6e603743ca0c85f9ceb9913d646f0c961986 (patch) | |
| tree | 37799a7269037d2b00183076c7709c7c1288ec34 /gdb/source.c | |
| parent | e998ba604f8b1498c8ad43f2c19fee097b6131ef (diff) | |
| download | binutils-4c0a6e603743ca0c85f9ceb9913d646f0c961986.zip binutils-4c0a6e603743ca0c85f9ceb9913d646f0c961986.tar.gz binutils-4c0a6e603743ca0c85f9ceb9913d646f0c961986.tar.bz2 | |
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.jiang@intel.com>
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'gdb/source.c')
0 files changed, 0 insertions, 0 deletions