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| author | Evan Cheng <evan.cheng@apple.com> | 2008-10-17 17:14:20 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-10-17 17:14:20 +0000 |
| commit | 4b299d4ebdf57c56ca336d9aca6f2ad7d8175995 (patch) | |
| tree | d6be26dbd22d8990e94554898f4298a4c737e73e /lib/Target/X86/X86InstrSSE.td | |
| parent | 244911bdeece7b45d6b75ea2b5a17f18d9ba6d95 (diff) | |
Fix lfence and mfence encoding. These look like MRM5r and MRM6r instructions except they do not have any operands. The RegModRM byte is encoded with register number 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57692 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrSSE.td')
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index 0a5089d1ab..426bddcea0 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -2239,9 +2239,9 @@ def CLFLUSH : I<0xAE, MRM7m, (outs), (ins i8mem:$src), TB, Requires<[HasSSE2]>; // Load, store, and memory fence -def LFENCE : I<0xAE, MRM5m, (outs), (ins), +def LFENCE : I<0xAE, MRM5r, (outs), (ins), "lfence", [(int_x86_sse2_lfence)]>, TB, Requires<[HasSSE2]>; -def MFENCE : I<0xAE, MRM6m, (outs), (ins), +def MFENCE : I<0xAE, MRM6r, (outs), (ins), "mfence", [(int_x86_sse2_mfence)]>, TB, Requires<[HasSSE2]>; //TODO: custom lower this so as to never even generate the noop |