1 //===-- HexagonSelectionDAGInfo.cpp - Hexagon SelectionDAG Info -----------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the HexagonSelectionDAGInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "HexagonTargetMachine.h" 15 using namespace llvm; 16 17 #define DEBUG_TYPE "hexagon-selectiondag-info" 18 19 bool llvm::flag_aligned_memcpy; 20 21 HexagonSelectionDAGInfo::HexagonSelectionDAGInfo(const DataLayout &DL) 22 : TargetSelectionDAGInfo(&DL) {} 23 24 HexagonSelectionDAGInfo::~HexagonSelectionDAGInfo() { 25 } 26 27 SDValue 28 HexagonSelectionDAGInfo:: 29 EmitTargetCodeForMemcpy(SelectionDAG &DAG, SDLoc dl, SDValue Chain, 30 SDValue Dst, SDValue Src, SDValue Size, unsigned Align, 31 bool isVolatile, bool AlwaysInline, 32 MachinePointerInfo DstPtrInfo, 33 MachinePointerInfo SrcPtrInfo) const { 34 flag_aligned_memcpy = false; 35 if ((Align & 0x3) == 0) { 36 ConstantSDNode *ConstantSize = dyn_cast<ConstantSDNode>(Size); 37 if (ConstantSize) { 38 uint64_t SizeVal = ConstantSize->getZExtValue(); 39 if ((SizeVal > 32) && ((SizeVal % 8) == 0)) 40 flag_aligned_memcpy = true; 41 } 42 } 43 44 return SDValue(); 45 } 46
