commit 011dafba614c84e4855bacda6b494dcf14223ea3
author Jim Grosbach <grosbach@apple.com> Fri Sep 30 19:58:46 2011 +0000
committer Jim Grosbach <grosbach@apple.com> Fri Sep 30 19:58:46 2011 +0000
tree a63b3db63a315e3c5055d3ea0f72711f1a782642
parent 2f0cbf6a997dcb4d57d5bf8752433970d6f32abf

Don't modify constant in-place.

llvm-svn: 140875

llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
index 26432d2..bb1cbfa 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -2839,10 +2839,11 @@
 
         // Avoid lossy conversions and denormals. Zero is a special case
         // that's OK to convert.
-        F.clearSign();
+        APFloat Fabs = F;
+        Fabs.clearSign();
         if (!Lossy &&
-            ((F.compare(APFloat::getSmallestNormalized(*Sem)) !=
-                 APFloat::cmpLessThan) || F.isZero()))
+            ((Fabs.compare(APFloat::getSmallestNormalized(*Sem)) !=
+                 APFloat::cmpLessThan) || Fabs.isZero()))
 
           return new FCmpInst(I.getPredicate(), LHSExt->getOperand(0),
                               ConstantFP::get(RHSC->getContext(), F));