commit 47d7be9578808b416a5b212a9a1b456ddeee94b4
author Evan Cheng <evan.cheng@apple.com> Tue Jul 17 07:47:50 2012 +0000
committer Evan Cheng <evan.cheng@apple.com> Tue Jul 17 07:47:50 2012 +0000
tree cb2dcbf981725a09f490a83586d5a7fa52f77221
parent 1ad8e98298ada7299c346bf67f59f8adc821bb9b

Make sure constant bitwidth is <= 64 bit before calling getSExtValue().

llvm-svn: 160350

llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 9902ed7..d439a6f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -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()) {