diff options
Diffstat (limited to 'lib/Target/X86/X86ISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelDAGToDAG.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index 72f2bc11d7..4301d7685b 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -1841,7 +1841,8 @@ SDNode *X86DAGToDAGISel::Select(SDNode *Node) { // Look for (X86cmp (and $op, $imm), 0) and see if we can convert it to // use a smaller encoding. - if (N0.getOpcode() == ISD::TRUNCATE && N0.hasOneUse()) + if (N0.getOpcode() == ISD::TRUNCATE && N0.hasOneUse() && + HasNoSignedComparisonUses(Node)) // Look past the truncate if CMP is the only use of it. N0 = N0.getOperand(0); if (N0.getNode()->getOpcode() == ISD::AND && N0.getNode()->hasOneUse() && |