[llvm-commits] [llvm] r111208 - /llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp

[Bob Wilson]

Author: bwilson
Date: Mon Aug 16 18:37:17 2010
New Revision: 111208

URL: http://llvm.org/viewvc/llvm-project?rev=111208&view=rev
Log:
Ignore undef shuffle indices when checking for a VTRN shuffle.  Radar 8290937.

Modified:
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=111208&r1=111207&r2=111208&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Mon Aug 16 18:37:17 2010
@@ -3229,6 +3229,7 @@
   unsigned NumElts = VT.getVectorNumElements();
   WhichResult = (M[0] == 0 ? 0 : 1);
   for (unsigned i = 0; i < NumElts; i += 2) {
+    if (M[i] < 0) continue;
     if ((unsigned) M[i] != i + WhichResult ||
         (unsigned) M[i+1] != i + WhichResult)
       return false;