commit b6e7cd655c6ee119dbeacc321ee92387f983edb0
author Eli Friedman <eli.friedman@gmail.com> Thu May 05 21:59:18 2011 +0000
committer Eli Friedman <eli.friedman@gmail.com> Thu May 05 21:59:18 2011 +0000
tree e1aa6692a280bb8f1768af8804b5a3265a424acd
parent 108709d4d1ff02317972956540dad571bdf43e95

PR9838: Fix transform introduced in r127064 to not trigger when only one side of the icmp is an exact shift.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130954 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 bb9b88b..b6963c5 100644
--- a/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -2400,7 +2400,7 @@
         // fall-through
       case Instruction::SDiv:
       case Instruction::AShr:
-        if (!BO0->isExact() && !BO1->isExact())
+        if (!BO0->isExact() || !BO1->isExact())
           break;
         return new ICmpInst(I.getPredicate(), BO0->getOperand(0),
                             BO1->getOperand(0));