[SDAGBuilder] Make the AArch64 builder happier.

I intended this loop to only unwrap SplitVector actions, but it
was more broad than that, such as unwrapping WidenVector actions,
which makes operations seem legal when they're not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237457 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
James Molloy 2015-05-15 17:41:29 +00:00
parent ef0b6c4b1e
commit 7363a8bcdd

View File

@ -2278,11 +2278,11 @@ void SelectionDAGBuilder::visitSelect(const User &I) {
EVT VT = ValueVTs[0];
LLVMContext &Ctx = *DAG.getContext();
while (DAG.getTargetLoweringInfo().getTypeToTransformTo(Ctx, VT) != VT)
VT = DAG.getTargetLoweringInfo().getTypeToTransformTo(Ctx, VT);
auto &TLI = DAG.getTargetLoweringInfo();
while (TLI.getTypeAction(Ctx, VT) == TargetLoweringBase::TypeSplitVector)
VT = TLI.getTypeToTransformTo(Ctx, VT);
if (Opc != ISD::DELETED_NODE &&
DAG.getTargetLoweringInfo().isOperationLegalOrCustom(Opc, VT)) {
if (Opc != ISD::DELETED_NODE && TLI.isOperationLegalOrCustom(Opc, VT)) {
OpCode = Opc;
LHSVal = getValue(LHS);
RHSVal = getValue(RHS);