diff options
| author | Daniel Dunbar <daniel@zuster.org> | 2010-08-27 01:30:14 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-08-27 01:30:14 +0000 |
| commit | d8d36e61fd88fa91132c0c1906805aba99ccd625 (patch) | |
| tree | 44f01924662a34a94a3e223456a49a2950565b3f /lib/Target | |
| parent | 4cf81c47fe060fad290ea6b95388d1da7fad105a (diff) | |
X86: Fix an encoding issue with LOCK_ADD64mr, which could lead to very hard to find miscompiles with the integrated assembler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112250 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/X86Instr64bit.td | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/X86/X86Instr64bit.td b/lib/Target/X86/X86Instr64bit.td index c731ecd887..1f11dc1d18 100644 --- a/lib/Target/X86/X86Instr64bit.td +++ b/lib/Target/X86/X86Instr64bit.td @@ -1678,7 +1678,7 @@ def XCHG64ar : RI<0x90, AddRegFrm, (outs), (ins GR64:$src), // Optimized codegen when the non-memory output is not used. let Defs = [EFLAGS], mayLoad = 1, mayStore = 1 in { // FIXME: Use normal add / sub instructions and add lock prefix dynamically. -def LOCK_ADD64mr : RI<0x03, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2), +def LOCK_ADD64mr : RI<0x01, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2), "lock\n\t" "add{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK; def LOCK_ADD64mi8 : RIi8<0x83, MRM0m, (outs), |