From 4acac62e8d0d90aac3368ae43bab7595c444fac0 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Sat, 12 Sep 2009 22:02:17 +0000
Subject: [PATCH] Preserve the inbounds flag, so that the constant folder
 doesn't recompute it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81634 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/ConstantsContext.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/VMCore/ConstantsContext.h b/lib/VMCore/ConstantsContext.h
index 9785d377b26..4f55502ff94 100644
--- a/lib/VMCore/ConstantsContext.h
+++ b/lib/VMCore/ConstantsContext.h
@@ -437,8 +437,11 @@ struct ConvertConstantType<ConstantExpr, Type> {
     case Instruction::GetElementPtr:
       // Make everyone now use a constant of the new type...
       std::vector<Value*> Idx(OldC->op_begin()+1, OldC->op_end());
-      New = ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
-                                             &Idx[0], Idx.size());
+      New = cast<GEPOperator>(OldC)->isInBounds() ?
+        ConstantExpr::getInBoundsGetElementPtrTy(NewTy, OldC->getOperand(0),
+                                                 &Idx[0], Idx.size()) :
+        ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
+                                         &Idx[0], Idx.size());
       break;
     }