diff options
Diffstat (limited to 'lib/Target/X86/X86ISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelDAGToDAG.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index 316075839c..f6df4d3b4d 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -2438,7 +2438,12 @@ SDNode *X86DAGToDAGISel::Select(SDNode *Node) { return NULL; } - case X86ISD::CMP: { + case X86ISD::CMP: + case X86ISD::SUB: { + // Sometimes a SUB is used to perform comparison. + if (Opcode == X86ISD::SUB && Node->hasAnyUseOfValue(0)) + // This node is not a CMP. + break; SDValue N0 = Node->getOperand(0); SDValue N1 = Node->getOperand(1); |