Make GetElementPtr ConstantExprs default to having no pointer overflow.
llvm-svn: 76280
diff --git a/llvm/lib/VMCore/Constants.cpp b/llvm/lib/VMCore/Constants.cpp
index 81f544b..f6d8e86 100644
--- a/llvm/lib/VMCore/Constants.cpp
+++ b/llvm/lib/VMCore/Constants.cpp
@@ -18,6 +18,7 @@
#include "llvm/Instructions.h"
#include "llvm/MDNode.h"
#include "llvm/Module.h"
+#include "llvm/Operator.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
@@ -474,8 +475,11 @@
static GetElementPtrConstantExpr *Create(Constant *C,
const std::vector<Constant*>&IdxList,
const Type *DestTy) {
- return new(IdxList.size() + 1)
+ GetElementPtrConstantExpr *Result = new(IdxList.size() + 1)
GetElementPtrConstantExpr(C, IdxList, DestTy);
+ // Getelementptr defaults to having no pointer overflow.
+ cast<GEPOperator>(Result)->setHasNoPointerOverflow(true);
+ return Result;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);