From: Nuno Lopes <nunoplopes@sapo.pt>
Date: Thu, 31 Oct 2013 19:53:53 +0000 (+0000)
Subject: [ConstantRange] improve my previous patch per Nick suggestion
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7de1b3bd458c33949b9b3f7eb1b9e0c07cfdf65a;p=oota-llvm.git

[ConstantRange] improve my previous patch per Nick suggestion

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193795 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Support/ConstantRange.cpp b/lib/Support/ConstantRange.cpp
index e3b43ed6df6..265b6e96a74 100644
--- a/lib/Support/ConstantRange.cpp
+++ b/lib/Support/ConstantRange.cpp
@@ -447,7 +447,7 @@ ConstantRange ConstantRange::signExtend(uint32_t DstTySize) const {
   assert(SrcTySize < DstTySize && "Not a value extension");
 
   // special case: [X, INT_MIN) -- not really wrapping around
-  if (Upper == APInt::getHighBitsSet(SrcTySize, 1))
+  if (Upper.isMinSignedValue())
     return ConstantRange(Lower.sext(DstTySize), Upper.zext(DstTySize));
 
   if (isFullSet() || isSignWrappedSet()) {