Allow undef in a shuffle mask
llvm-svn: 27714
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 99d3a47..8fa5f84 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -416,6 +416,7 @@
assert(isa<ConstantSDNode>(Elt) && "Invalid VECTOR_SHUFFLE mask!");
for (unsigned i = EltSize, e = 16; i != e; i += EltSize) {
+ if (N->getOperand(i).getOpcode() == ISD::UNDEF) continue;
assert(isa<ConstantSDNode>(N->getOperand(i)) &&
"Invalid VECTOR_SHUFFLE mask!");
for (unsigned j = 0; j != EltSize; ++j)