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Fix vselect when getSetCCResultType returns a different type from the operands

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181348 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2013-05-07 20:24:18 +00:00
parent acccd2edc8
commit 798925bac7
1 changed files with 8 additions and 3 deletions
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11
lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
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@ -652,13 +652,14 @@ SDValue VectorLegalizer::ExpandSEXTINREG(SDValue Op) {
SDValue VectorLegalizer::ExpandVSELECT(SDValue Op) {
// Implement VSELECT in terms of XOR, AND, OR
// on platforms which do not support blend natively.
EVT VT = Op.getOperand(0).getValueType();
DebugLoc DL = Op.getDebugLoc();
SDValue Mask = Op.getOperand(0);
SDValue Op1 = Op.getOperand(1);
SDValue Op2 = Op.getOperand(2);
EVT VT = Mask.getValueType();
// If we can't even use the basic vector operations of
// AND,OR,XOR, we will have to scalarize the op.
// Notice that the operation may be 'promoted' which means that it is
@ -673,8 +674,12 @@ SDValue VectorLegalizer::ExpandVSELECT(SDValue Op) {
TargetLowering::ZeroOrNegativeOneBooleanContent)
return DAG.UnrollVectorOp(Op.getNode());
assert(VT.getSizeInBits() == Op1.getValueType().getSizeInBits()
&& "Invalid mask size");
// If the mask and the type are different sizes, unroll the vector op. This
// can occur when getSetCCResultType returns something that is different in
// size from the operand types. For example, v4i8 = select v4i32, v4i8, v4i8.
if (VT.getSizeInBits() != Op1.getValueType().getSizeInBits())
return DAG.UnrollVectorOp(Op.getNode());
// Bitcast the operands to be the same type as the mask.
// This is needed when we select between FP types because
// the mask is a vector of integers.