Change asserts at the top of getVectorShuffle to check that LHS and RHS have the same type as the result.
Previously the asserts were only checking that RHS and LHS were the same type and had the same element type as the result. All downstream code for ISD::VECTOR_SHUFFLE requires the types to be the same.
Also removed one unnecessary check of matched element counts that was present in the code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188051 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 66be160..6cf16ae 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1298,11 +1298,8 @@
SDValue SelectionDAG::getVectorShuffle(EVT VT, SDLoc dl, SDValue N1,
SDValue N2, const int *Mask) {
- assert(N1.getValueType() == N2.getValueType() && "Invalid VECTOR_SHUFFLE");
- assert(VT.isVector() && N1.getValueType().isVector() &&
- "Vector Shuffle VTs must be a vectors");
- assert(VT.getVectorElementType() == N1.getValueType().getVectorElementType()
- && "Vector Shuffle VTs must have same element type");
+ assert(VT == N1.getValueType() && VT == N2.getValueType() &&
+ "Invalid VECTOR_SHUFFLE");
// Canonicalize shuffle undef, undef -> undef
if (N1.getOpcode() == ISD::UNDEF && N2.getOpcode() == ISD::UNDEF)
@@ -1356,7 +1353,7 @@
for (unsigned i = 0; i != NElts; ++i) {
if (MaskVec[i] >= 0 && MaskVec[i] != (int)i) Identity = false;
}
- if (Identity && NElts == N1.getValueType().getVectorNumElements())
+ if (Identity && NElts)
return N1;
FoldingSetNodeID ID;