diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 28 |
1 files changed, 9 insertions, 19 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index ce01d53d60..aa79089194 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -3181,27 +3181,17 @@ static SDValue getMemcpyLoadsAndStores(SelectionDAG &DAG, DebugLoc dl, } else { // The type might not be legal for the target. This should only happen // if the type is smaller than a legal type, as on PPC, so the right - // thing to do is generate a LoadExt/StoreTrunc pair. + // thing to do is generate a LoadExt/StoreTrunc pair. These simplify + // to Load/Store if NVT==VT. // FIXME does the case above also need this? - if (TLI.isTypeLegal(VT)) { - Value = DAG.getLoad(VT, dl, Chain, - getMemBasePlusOffset(Src, SrcOff, DAG), - SrcSV, SrcSVOff + SrcOff, false, Align); - Store = DAG.getStore(Chain, dl, Value, + MVT NVT = TLI.getTypeToTransformTo(VT); + assert(NVT.bitsGE(VT)); + Value = DAG.getExtLoad(ISD::EXTLOAD, dl, NVT, Chain, + getMemBasePlusOffset(Src, SrcOff, DAG), + SrcSV, SrcSVOff + SrcOff, VT, false, Align); + Store = DAG.getTruncStore(Chain, dl, Value, getMemBasePlusOffset(Dst, DstOff, DAG), - DstSV, DstSVOff + DstOff, false, DstAlign); - } else { - MVT NVT = VT; - while (!TLI.isTypeLegal(NVT)) { - NVT = (MVT::SimpleValueType(NVT.getSimpleVT() + 1)); - } - Value = DAG.getExtLoad(ISD::EXTLOAD, dl, NVT, Chain, - getMemBasePlusOffset(Src, SrcOff, DAG), - SrcSV, SrcSVOff + SrcOff, VT, false, Align); - Store = DAG.getTruncStore(Chain, dl, Value, - getMemBasePlusOffset(Dst, DstOff, DAG), - DstSV, DstSVOff + DstOff, VT, false, DstAlign); - } + DstSV, DstSVOff + DstOff, VT, false, DstAlign); } OutChains.push_back(Store); SrcOff += VTSize; |