git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106574 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-06-22 20:52:02 +00:00
parent f2937ac4ed
commit dd11ee2273

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@ -9843,7 +9843,7 @@ static SDValue PerformVZEXT_MOVLCombine(SDNode *N, SelectionDAG &DAG) {
// On X86 and X86-64, atomic operations are lowered to locked instructions.
// Locked instructions, in turn, have implicit fence semantics (all memory
// operations are flushed before issuing the locked instruction, and the
// operations are flushed before issuing the locked instruction, and they
// are not buffered), so we can fold away the common pattern of
// fence-atomic-fence.
static SDValue PerformMEMBARRIERCombine(SDNode* N, SelectionDAG &DAG) {