From: John McCall <rjmccall@apple.com>
Date: Fri, 4 Mar 2011 08:25:59 +0000 (+0000)
Subject: Access ivars with inbounds GEPs, even in -fwrapv.  It's unlikely that
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fb4eb9f56c1b7bb4fb632127a5e2d253b65758bf;p=clang

Access ivars with inbounds GEPs, even in -fwrapv.  It's unlikely that
this can have any optimization effect, given the opacity of objects pointers,
but you never know.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126990 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index d2af104e48..bc02ed5b43 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -115,7 +115,7 @@ LValue CGObjCRuntime::EmitValueForIvarAtOffset(CodeGen::CodeGenFunction &CGF,
   QualType IvarTy = Ivar->getType();
   const llvm::Type *LTy = CGF.CGM.getTypes().ConvertTypeForMem(IvarTy);
   llvm::Value *V = CGF.Builder.CreateBitCast(BaseValue, I8Ptr);
-  V = CGF.Builder.CreateGEP(V, Offset, "add.ptr");
+  V = CGF.Builder.CreateInBoundsGEP(V, Offset, "add.ptr");
   V = CGF.Builder.CreateBitCast(V, llvm::PointerType::getUnqual(LTy));
 
   if (!Ivar->isBitField()) {