[llvm-commits] CVS: llvm/lib/Target/PowerPC/PPCISelLowering.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/PowerPC:

PPCISelLowering.cpp updated: 1.151 -> 1.152
---
Log message:

Fix a crash when faced with a shuffle vector that has an undef in its mask.


---
Diffs of the changes:  (+5 -1)

 PPCISelLowering.cpp |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletion(-)


Index: llvm/lib/Target/PowerPC/PPCISelLowering.cpp
diff -u llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.151 llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.152
--- llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.151	Fri Apr 14 18:19:08 2006
+++ llvm/lib/Target/PowerPC/PPCISelLowering.cpp	Sat Apr 15 18:48:05 2006
@@ -1116,7 +1116,11 @@
   
   std::vector<SDOperand> ResultMask;
   for (unsigned i = 0, e = PermMask.getNumOperands(); i != e; ++i) {
-    unsigned SrcElt =cast<ConstantSDNode>(PermMask.getOperand(i))->getValue();
+    unsigned SrcElt;
+    if (PermMask.getOperand(i).getOpcode() == ISD::UNDEF)
+      SrcElt = 0;
+    else 
+      SrcElt = cast<ConstantSDNode>(PermMask.getOperand(i))->getValue();
     
     for (unsigned j = 0; j != BytesPerElement; ++j)
       ResultMask.push_back(DAG.getConstant(SrcElt*BytesPerElement+j,