[llvm-commits] [llvm] r160350 - /llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp

[Evan Cheng]

Author: evancheng
Date: Tue Jul 17 02:47:50 2012
New Revision: 160350

URL: http://llvm.org/viewvc/llvm-project?rev=160350&view=rev
Log:
Make sure constant bitwidth is <= 64 bit before calling getSExtValue().

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp?rev=160350&r1=160349&r2=160350&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp Tue Jul 17 02:47:50 2012
@@ -2323,7 +2323,8 @@
         }
       }
 
-    if (!isLegalICmpImmediate(C1.getSExtValue())) {
+    if (C1.getMinSignedBits() <= 64 &&
+        !isLegalICmpImmediate(C1.getSExtValue())) {
       // (X & -256) == 256 -> (X >> 8) == 1
       if ((Cond == ISD::SETEQ || Cond == ISD::SETNE) &&
           N0.getOpcode() == ISD::AND && N0.hasOneUse()) {