diff options
| author | Aart Bik <ajcbik@google.com> | 2017-04-03 14:09:01 -0700 |
|---|---|---|
| committer | Aart Bik <ajcbik@google.com> | 2017-04-04 09:15:45 -0700 |
| commit | 8939c6474a34eb6d642db8fecb8b3a5c3194e464 (patch) | |
| tree | a0a2db32a5147416d796907a3977dd29e04e9328 /disassembler | |
| parent | 08ae45625d059891754e3c3ad63a5e6cae80b96b (diff) | |
SIMD pcmpgtb,w,d,q for x86/x86_64
Rationale:
Enables fast compare gt.
Test: assembler_x86[_64]_test
Change-Id: I0a069649480529f3fec2c2b100e2aaaa2cd79820
Diffstat (limited to 'disassembler')
| -rw-r--r-- | disassembler/disassembler_x86.cc | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/disassembler/disassembler_x86.cc b/disassembler/disassembler_x86.cc index f5c3ad20cc..e12bcec776 100644 --- a/disassembler/disassembler_x86.cc +++ b/disassembler/disassembler_x86.cc @@ -574,6 +574,20 @@ DISASSEMBLER_ENTRY(cmp, load = true; src_reg_file = dst_reg_file = SSE; break; + case 0x29: + opcode1 = "pcmpeqq"; + prefix[2] = 0; + has_modrm = true; + load = true; + src_reg_file = dst_reg_file = SSE; + break; + case 0x39: + opcode1 = "pcmpgtq"; + prefix[2] = 0; + has_modrm = true; + load = true; + src_reg_file = dst_reg_file = SSE; + break; case 0x40: opcode1 = "pmulld"; prefix[2] = 0; @@ -737,6 +751,24 @@ DISASSEMBLER_ENTRY(cmp, load = true; has_modrm = true; break; + case 0x64: + case 0x65: + case 0x66: + if (prefix[2] == 0x66) { + src_reg_file = dst_reg_file = SSE; + prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode + } else { + src_reg_file = dst_reg_file = MMX; + } + switch (*instr) { + case 0x64: opcode1 = "pcmpgtb"; break; + case 0x65: opcode1 = "pcmpgtw"; break; + case 0x66: opcode1 = "pcmpgtd"; break; + } + prefix[2] = 0; + has_modrm = true; + load = true; + break; case 0x6E: if (prefix[2] == 0x66) { dst_reg_file = SSE; |