diff options
| -rw-r--r-- | lib/Target/X86/X86ISelDAGToDAG.cpp | 2 | ||||
| -rw-r--r-- | test/CodeGen/X86/rem-2.ll | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index 842bb13..9b42d00 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -1405,7 +1405,7 @@ SDNode *X86DAGToDAGISel::Select(SDValue N) { InFlag = CurDAG->getCopyToReg(CurDAG->getEntryNode(), LoReg, N0, SDValue()).getValue(1); - if (isSigned) { + if (isSigned && !CurDAG->SignBitIsZero(N0)) { // Sign extend the low part into the high part. InFlag = SDValue(CurDAG->getTargetNode(SExtOpcode, MVT::Flag, InFlag), 0); diff --git a/test/CodeGen/X86/rem-2.ll b/test/CodeGen/X86/rem-2.ll new file mode 100644 index 0000000..3e17fc0 --- /dev/null +++ b/test/CodeGen/X86/rem-2.ll @@ -0,0 +1,7 @@ +; RUN: llvm-as < %s | llc -march=x86 | not grep cltd + +define i32 @test(i32 %X) nounwind readnone { +entry: + %0 = srem i32 41, %X + ret i32 %0 +} |