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//===-- HexagonSelectionDAGInfo.cpp - Hexagon SelectionDAG Info -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the HexagonSelectionDAGInfo class.
//
//===----------------------------------------------------------------------===//
#include "HexagonTargetMachine.h"
using namespace llvm;
#define DEBUG_TYPE "hexagon-selectiondag-info"
bool llvm::flag_aligned_memcpy;
HexagonSelectionDAGInfo::HexagonSelectionDAGInfo(const DataLayout &DL)
: TargetSelectionDAGInfo(&DL) {}
HexagonSelectionDAGInfo::~HexagonSelectionDAGInfo() {
}
SDValue
HexagonSelectionDAGInfo::
EmitTargetCodeForMemcpy(SelectionDAG &DAG, SDLoc dl, SDValue Chain,
SDValue Dst, SDValue Src, SDValue Size, unsigned Align,
bool isVolatile, bool AlwaysInline,
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) const {
flag_aligned_memcpy = false;
if ((Align & 0x3) == 0) {
ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size);
if (ConstantSize) {
uint64_t SizeVal = ConstantSize->getZExtValue();
if ((SizeVal > 32) && ((SizeVal % 8) == 0))
flag_aligned_memcpy = true;
}
}
return SDValue();
}
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