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convert a bunch of callers from DataLayout::getIndexedOffset() to GEP::accumulateConstantOffset().

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The later API is nicer than the former, and is correct regarding wrap-around offsets (if anyone cares).
There are a few more places left with duplicated code, which I'll remove soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171259 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nuno Lopes
2012-12-30 16:25:48 +00:00
parent 0d80c9c8c7
commit 98281a2050
8 changed files with 30 additions and 83 deletions
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lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+5 -9
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@@ -36,6 +36,7 @@
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Module.h"
#include "llvm/Operator.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/MathExtras.h"
@@ -1477,19 +1478,14 @@ static const MCExpr *lowerConstant(const Constant *CV, AsmPrinter &AP) {
case Instruction::GetElementPtr: {
const DataLayout &TD = *AP.TM.getDataLayout();
// Generate a symbolic expression for the byte address
const Constant *PtrVal = CE->getOperand(0);
SmallVector<Value*, 8> IdxVec(CE->op_begin()+1, CE->op_end());
int64_t Offset = TD.getIndexedOffset(PtrVal->getType(), IdxVec);
APInt OffsetAI(TD.getPointerSizeInBits(), 0);
cast<GEPOperator>(CE)->accumulateConstantOffset(TD, OffsetAI);
const MCExpr *Base = lowerConstant(CE->getOperand(0), AP);
if (Offset == 0)
if (!OffsetAI)
return Base;
// Truncate/sext the offset to the pointer size.
unsigned Width = TD.getPointerSizeInBits();
if (Width < 64)
Offset = SignExtend64(Offset, Width);
int64_t Offset = OffsetAI.getSExtValue();
return MCBinaryExpr::CreateAdd(Base, MCConstantExpr::Create(Offset, Ctx),
Ctx);
}