Allow undef in a shuffle mask

llvm-svn: 27714
2006-04-14 23:19:08 +00:00 · 2006-04-14 23:19:08 +00:00 · 559c8ba466
parent 0875d94567
commit 559c8ba466
1 changed files with 1 additions and 0 deletions
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@ -416,6 +416,7 @@ bool PPC::isSplatShuffleMask(SDNode *N, unsigned EltSize) {
  
  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)