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reimplement memcpy/memmove/memset lowering to use MachinePointerInfo

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instead of srcvalue/offset pairs.  This corrects SV info for mem 
operations whose size is > 32-bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114401 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-09-21 05:40:29 +00:00
parent 40a858f6e7
commit e72f2027e9
12 changed files with 102 additions and 76 deletions
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16
lib/Target/ARM/ARMSelectionDAGInfo.cpp
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@ -29,10 +29,8 @@ ARMSelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
SDValue Dst, SDValue Src,
SDValue Size, unsigned Align,
bool isVolatile, bool AlwaysInline,
const Value *DstSV,
uint64_t DstSVOff,
const Value *SrcSV,
uint64_t SrcSVOff) const {
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) const {
// Do repeated 4-byte loads and stores. To be improved.
// This requires 4-byte alignment.
if ((Align & 3) != 0)
@ -66,7 +64,8 @@ ARMSelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
Loads[i] = DAG.getLoad(VT, dl, Chain,
DAG.getNode(ISD::ADD, dl, MVT::i32, Src,
DAG.getConstant(SrcOff, MVT::i32)),
SrcSV, SrcSVOff + SrcOff, isVolatile, false, 0);
SrcPtrInfo.getWithOffset(SrcOff), isVolatile,
false, 0);
TFOps[i] = Loads[i].getValue(1);
SrcOff += VTSize;
}
@ -77,7 +76,8 @@ ARMSelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
TFOps[i] = DAG.getStore(Chain, dl, Loads[i],
DAG.getNode(ISD::ADD, dl, MVT::i32, Dst,
DAG.getConstant(DstOff, MVT::i32)),
DstSV, DstSVOff + DstOff, isVolatile, false, 0);
DstPtrInfo.getWithOffset(DstOff),
isVolatile, false, 0);
DstOff += VTSize;
}
Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &TFOps[0], i);
@ -103,7 +103,7 @@ ARMSelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
Loads[i] = DAG.getLoad(VT, dl, Chain,
DAG.getNode(ISD::ADD, dl, MVT::i32, Src,
DAG.getConstant(SrcOff, MVT::i32)),
SrcSV, SrcSVOff + SrcOff, false, false, 0);
SrcPtrInfo.getWithOffset(SrcOff), false, false, 0);
TFOps[i] = Loads[i].getValue(1);
++i;
SrcOff += VTSize;
@ -125,7 +125,7 @@ ARMSelectionDAGInfo::EmitTargetCodeForMemcpy(SelectionDAG &DAG, DebugLoc dl,
TFOps[i] = DAG.getStore(Chain, dl, Loads[i],
DAG.getNode(ISD::ADD, dl, MVT::i32, Dst,
DAG.getConstant(DstOff, MVT::i32)),
DstSV, DstSVOff + DstOff, false, false, 0);
DstPtrInfo.getWithOffset(DstOff), false, false, 0);
++i;
DstOff += VTSize;
BytesLeft -= VTSize;