From: Chris Lattner <sabre@nondot.org>
Date: Fri, 17 Jun 2005 02:05:55 +0000 (+0000)
Subject: Don't crash when dealing with INTMIN.  This fixes PR585 and
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5662503afd2f70c3d6651549af510992ab5afc00;p=oota-llvm.git

Don't crash when dealing with INTMIN.  This fixes PR585 and
Transforms/InstCombine/2005-06-16-RangeCrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22234 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 321b032505c..d2827af3d74 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -2699,6 +2699,8 @@ Instruction *InstCombiner::visitSetCondInst(SetCondInst &I) {
             if (CI->isNullValue()) {       // (X / neg) op 0
               LoBound = AddOne(DivRHS);
               HiBound = cast<ConstantInt>(ConstantExpr::getNeg(DivRHS));
+              if (HiBound == DivRHS)
+                LoBound = 0;  // - INTMIN = INTMIN
             } else if (isPositive(CI)) {   // (X / neg) op pos
               HiOverflow = LoOverflow = ProdOV;
               if (!LoOverflow)