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Special case handling two wide build_vector(0, x).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27961 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-04-24 22:58:52 +00:00
parent 64e9769339
commit 37d1d9bc66
1 changed files with 4 additions and 4 deletions
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8
lib/Target/X86/X86ISelLowering.cpp
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@ -3236,10 +3236,6 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
MVT::ValueType EVT = MVT::getVectorBaseType(VT);
unsigned EVTBits = MVT::getSizeInBits(EVT);
// Let legalizer expand 2-widde build_vector's.
if (EVTBits == 64)
return SDOperand();
unsigned NumElems = Op.getNumOperands();
unsigned NumZero = 0;
unsigned NumNonZero = 0;
@ -3291,6 +3287,10 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
}
}
// Let legalizer expand 2-widde build_vector's.
if (EVTBits == 64)
return SDOperand();
// If element VT is < 32 bits, convert it to inserts into a zero vector.
if (EVTBits == 8) {
SDOperand V = LowerBuildVectorv16i8(Op, NonZeros,NumNonZero,NumZero, DAG);