diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2018-03-08 19:57:35 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-03-08 19:57:48 -0800 |
| commit | 0089daceaba4338046932e65a1b5882065416633 (patch) | |
| tree | 779e5859464843e858b513e0eedbec3c07c949a6 /gdb/gdbthread.h | |
| parent | 567a3e54d211ab8d09119f99fed10b57db895450 (diff) | |
| download | gdb-0089daceaba4338046932e65a1b5882065416633.zip gdb-0089daceaba4338046932e65a1b5882065416633.tar.gz gdb-0089daceaba4338046932e65a1b5882065416633.tar.bz2 | |
x86: Optimize with EVEX128 encoding for AVX512VL
We can optimize AVX512 instructions with EVEX128 only if AVX512VL is
enabled:
1. Instruction is an AVX512VL instruction. Or
2. AVX512VL is enabled explicitly by -march=+avx512vl/".arch .avx512vl".
We should optimize EVEX instructions with EVEX128 encoding when pseudo
{evex} prefix is used.
* config/tc-i386.c (set_cpu_arch): Set cpu_arch_isa_flags.
(md_parse_option): Likewise.
(optimize_encoding): Check i.tm.cpu_flags and cpu_arch_isa_flags
for cpuavx512vl instead of cpu_arch_flags. Optimize EVEX with
EVEX128 when EVEX encoding is required.
* testsuite/gas/i386/i386.exp: Run optimize-4, optimize-5,
x86-64-optimize-5 and x86-64-optimize-6.
* testsuite/gas/i386/optimize-1.d: Updated.
* testsuite/gas/i386/x86-64-optimize-2.d: Likewise.
* testsuite/gas/i386/optimize-4.d: New file.
* testsuite/gas/i386/optimize-4.s: Likewise.
* testsuite/gas/i386/optimize-5.d: Likewise.
* testsuite/gas/i386/optimize-5.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-5.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-5.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-6.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-6.s: Likewise.
Diffstat (limited to 'gdb/gdbthread.h')
0 files changed, 0 insertions, 0 deletions