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| author | Eli Friedman <eli.friedman@gmail.com> | 2012-01-16 16:42:21 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2012-01-16 16:42:21 +0000 |
| commit | 1857b51ef57697992afe3955f5f90e79612142d8 (patch) | |
| tree | 93b0a926c41df3c852d0e7e1c78657b5ff745f43 /lib/Target | |
| parent | a20b71518a9d27aa902d1044599bb1b659c93bce (diff) | |
Make sure the non-SSE lowering for fences correctly clobbers EFLAGS. PR11768.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148240 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/X86InstrCompiler.td | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/X86/X86InstrCompiler.td b/lib/Target/X86/X86InstrCompiler.td index 5649ba5835..1106b85b3e 100644 --- a/lib/Target/X86/X86InstrCompiler.td +++ b/lib/Target/X86/X86InstrCompiler.td @@ -551,7 +551,7 @@ def ATOMSWAP6432 : I<0, Pseudo, (outs GR32:$dst1, GR32:$dst2), // Memory barriers // TODO: Get this to fold the constant into the instruction. -let isCodeGenOnly = 1 in +let isCodeGenOnly = 1, Defs = [EFLAGS] in def OR32mrLocked : I<0x09, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$zero), "lock\n\t" "or{l}\t{$zero, $dst|$dst, $zero}", |