From: Chris Lattner <sabre@nondot.org>
Date: Fri, 20 Oct 2006 18:20:21 +0000 (+0000)
Subject: Fix miscompilation of MallocBench/espresso which code review pointed out
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=87d8429506998806b9fe74cab7a16963ad4a088e;p=oota-llvm.git

Fix miscompilation of MallocBench/espresso which code review pointed out
but apparently didn't make it into the final patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31070 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index c30c0c924f8..bcb4888b6ae 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -4913,7 +4913,7 @@ Instruction *InstCombiner::visitShiftInst(ShiftInst &I) {
   // shr int -1, X = -1   (for any arithmetic shift rights of ~0)
   if (!isLeftShift)
     if (ConstantInt *CSI = dyn_cast<ConstantInt>(Op0))
-      if (CSI->isAllOnesValue())
+      if (CSI->isAllOnesValue() && Op0->getType()->isSigned())
         return ReplaceInstUsesWith(I, CSI);
 
   // Try to fold constant and into select arguments.