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Add an assert to verify that we don't see an

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{S,U}MUL_LOHI with an unused high value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47569 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-02-25 22:15:55 +00:00
parent fcf81db600
commit c2d9b5fcdf
1 changed files with 3 additions and 0 deletions
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lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -1221,6 +1221,9 @@ SDNode *X86DAGToDAGISel::Select(SDOperand N) {
case ISD::SMUL_LOHI:
case ISD::UMUL_LOHI: {
assert(!N.getValue(1).use_empty() &&
"A MUL_LOHI with an unused high result should fold to a MUL!");
SDOperand N0 = Node->getOperand(0);
SDOperand N1 = Node->getOperand(1);