commit 14d4b0cdb212fdca2f910582a001e4bb941fe9e5
author Nuno Lopes <nunoplopes@sapo.pt> Thu Oct 31 19:53:53 2013 +0000
committer Nuno Lopes <nunoplopes@sapo.pt> Thu Oct 31 19:53:53 2013 +0000
tree ed0c085cfba897c7ff5f06fa75102f3387880589
parent 1c09d4a537cd7bab63b96acbbc1a27bd33ff2cfc

[ConstantRange] improve my previous patch per Nick suggestion

llvm-svn: 193795

llvm/lib/Support/ConstantRange.cpp

diff --git a/llvm/lib/Support/ConstantRange.cpp b/llvm/lib/Support/ConstantRange.cpp
index e3b43ed..265b6e9 100644
--- a/llvm/lib/Support/ConstantRange.cpp
+++ b/llvm/lib/Support/ConstantRange.cpp
@@ -447,7 +447,7 @@
   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()) {