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[X86] Add an assert to ensure that a routine is only used with 128-bit vectors. Reduce SmallVector size accordingly.

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llvm-svn: 273117
This commit is contained in:
Craig Topper 2016-06-19 15:37:39 +00:00
parent 383e926959
commit 612cf9108d
1 changed files with 4 additions and 2 deletions
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6
lib/Target/X86/X86ISelLowering.cpp
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@ -8687,6 +8687,8 @@ static SDValue lowerVectorShuffleAsPermuteAndUnpack(const SDLoc &DL, MVT VT,
SelectionDAG &DAG) {
assert(!VT.isFloatingPoint() &&
"This routine only supports integer vectors.");
assert(VT.is128BitVector() &&
"This routine only works on 128-bit vectors.");
assert(!isSingleInputShuffleMask(Mask) &&
"This routine should only be used when blending two inputs.");
assert(Mask.size() >= 2 && "Single element masks are invalid.");
@ -8701,8 +8703,8 @@ static SDValue lowerVectorShuffleAsPermuteAndUnpack(const SDLoc &DL, MVT VT,
bool UnpackLo = NumLoInputs >= NumHiInputs;
auto TryUnpack = [&](MVT UnpackVT, int Scale) {
SmallVector<int, 32> V1Mask(Mask.size(), -1);
SmallVector<int, 32> V2Mask(Mask.size(), -1);
SmallVector<int, 16> V1Mask(Mask.size(), -1);
SmallVector<int, 16> V2Mask(Mask.size(), -1);
for (int i = 0; i < Size; ++i) {
if (Mask[i] < 0)