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Fix FastISel to recognize unhandled operands, such as constants

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that aren't available as virtual registers (for now).

llvm-svn: 55026
This commit is contained in:
Dan Gohman 2008-08-20 00:35:17 +00:00
parent 63d8801e51
commit f298c31918
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/SelectionDAG/FastISel.cpp
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@ -25,6 +25,10 @@ bool FastISel::SelectBinaryOp(Instruction *I, ISD::NodeType ISDOpcode,
DenseMap<const Value*, unsigned> &ValueMap) {
unsigned Op0 = ValueMap[I->getOperand(0)];
unsigned Op1 = ValueMap[I->getOperand(1)];
if (Op0 == 0 || Op1 == 0)
// Unhandled operand. Halt "fast" selection and bail.
return false;
MVT VT = MVT::getMVT(I->getType(), /*HandleUnknown=*/true);
if (VT == MVT::Other || !VT.isSimple())
// Unhandled type. Halt "fast" selection and bail.