commit 68e05fb3687ca68d5a5be49100c7c274a3185525
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 744773db081a2fa49a34b4fa2135cbb8bad2fa10
parent 62e0590c0e5125b6c0fe5221e6fc552605c27202

Don't modify constant in-place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140875 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/InstCombine/InstCombineCompares.cpp

diff --git a/lib/Transforms/InstCombine/InstCombineCompares.cpp b/lib/Transforms/InstCombine/InstCombineCompares.cpp
index 26432d2..bb1cbfa 100644
--- a/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/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));