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Fix based on post-commit comment on D7816 & rL230177 - BUILD_VECTOR operand truncation was using the the BV's output scalar type instead of the input type.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230278 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Pilgrim 2015-02-23 23:04:28 +00:00
parent 770e106ed6
commit a631cd85ca
1 changed files with 5 additions and 4 deletions
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9
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -11447,10 +11447,11 @@ SDValue DAGCombiner::visitCONCAT_VECTORS(SDNode *N) {
if (!SVT.isFloatingPoint())
// If BUILD_VECTOR are from built from integer, they may have different
// operand types. Get the smaller type and truncate all operands to it.
for (const SDValue &Op : N->ops()) {
EVT OpSVT = Op.getValueType().getScalarType();
MinVT = MinVT.bitsLE(OpSVT) ? MinVT : OpSVT;
}
for (const SDValue &Op : N->ops())
if (ISD::BUILD_VECTOR == Op.getOpcode()) {
EVT OpSVT = Op.getOperand(0)->getValueType(0);
MinVT = MinVT.bitsLE(OpSVT) ? MinVT : OpSVT;
}
for (const SDValue &Op : N->ops()) {
EVT OpVT = Op.getValueType();