Target/SystemZ/SystemZSelectionDAGInfo.cpp

25 static SDValue emitMemMem(SelectionDAG &DAG, const SDLoc &DL, unsigned Sequence,
41     return DAG.getNode(Loop, DL, MVT::Other, Chain, Dst, Src,
42                        DAG.getConstant(Size, DL, PtrVT),
43                        DAG.getConstant(Size / 256, DL, PtrVT));
44   return DAG.getNode(Sequence, DL, MVT::Other, Chain, Dst, Src,
45                      DAG.getConstant(Size, DL, PtrVT));
49     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Src,
56     return emitMemMem(DAG, DL, SystemZISD::MVC, SystemZISD::MVC_LOOP,
64 static SDValue memsetStore(SelectionDAG &DAG, const SDLoc &DL, SDValue Chain,
70   return DAG.getStore(
71       Chain, DL, DAG.getConstant(StoreVal, DL, MVT::getIntegerVT(Size * 8)),
76     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst,
99         SDValue Chain1 = memsetStore(DAG, DL, Chain, Dst, ByteVal, Size1,
103         Dst = DAG.getNode(ISD::ADD, DL, PtrVT, Dst,
104                           DAG.getConstant(Size1, DL, PtrVT));
106         SDValue Chain2 = memsetStore(DAG, DL, Chain, Dst, ByteVal, Size2,
108         return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Chain1, Chain2);
113         SDValue Chain1 = DAG.getStore(Chain, DL, Byte, Dst, DstPtrInfo, Align);
116         SDValue Dst2 = DAG.getNode(ISD::ADD, DL, PtrVT, Dst,
117                                    DAG.getConstant(1, DL, PtrVT));
119             DAG.getStore(Chain, DL, Byte, Dst2, DstPtrInfo.getWithOffset(1),
121         return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Chain1, Chain2);
129       return emitMemMem(DAG, DL, SystemZISD::XC, SystemZISD::XC_LOOP,
134     Chain = DAG.getStore(Chain, DL, Byte, Dst, DstPtrInfo, Align);
135     SDValue DstPlus1 = DAG.getNode(ISD::ADD, DL, PtrVT, Dst,
136                                    DAG.getConstant(1, DL, PtrVT));
137     return emitMemMem(DAG, DL, SystemZISD::MVC, SystemZISD::MVC_LOOP,
145 static SDValue emitCLC(SelectionDAG &DAG, const SDLoc &DL, SDValue Chain,
147   SDVTList VTs = DAG.getVTList(MVT::i32, MVT::Other);
158     return DAG.getNode(SystemZISD::CLC_LOOP, DL, VTs, Chain, Src1, Src2,
159                        DAG.getConstant(Size, DL, PtrVT),
160                        DAG.getConstant(Size / 256, DL, PtrVT));
161   return DAG.getNode(SystemZISD::CLC, DL, VTs, Chain, Src1, Src2,
162                      DAG.getConstant(Size, DL, PtrVT));
170                               SelectionDAG &DAG) {
171   SDValue IPM = DAG.getNode(SystemZISD::IPM, DL, MVT::i32, CCReg);
172   SDValue SHL = DAG.getNode(ISD::SHL, DL, MVT::i32, IPM,
173                             DAG.getConstant(30 - SystemZ::IPM_CC, DL, MVT::i32));
174   SDValue SRA = DAG.getNode(ISD::SRA, DL, MVT::i32, SHL,
175                             DAG.getConstant(30, DL, MVT::i32));
180     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src1,
187     SDValue CCReg = emitCLC(DAG, DL, Chain, Src2, Src1, Bytes);
189     return std::make_pair(addIPMSequence(DL, CCReg, DAG), Chain);
195     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src,
199   SDVTList VTs = DAG.getVTList(PtrVT, MVT::i32, MVT::Other);
200   Length = DAG.getZExtOrTrunc(Length, DL, PtrVT);
201   Char = DAG.getZExtOrTrunc(Char, DL, MVT::i32);
202   Char = DAG.getNode(ISD::AND, DL, MVT::i32, Char,
203                      DAG.getConstant(255, DL, MVT::i32));
204   SDValue Limit = DAG.getNode(ISD::ADD, DL, PtrVT, Src, Length);
205   SDValue End = DAG.getNode(SystemZISD::SEARCH_STRING, DL, VTs, Chain,
213       End, DAG.getConstant(0, DL, PtrVT),
214       DAG.getTargetConstant(SystemZ::CCMASK_SRST, DL, MVT::i32),
215       DAG.getTargetConstant(SystemZ::CCMASK_SRST_FOUND, DL, MVT::i32), CCReg};
216   End = DAG.getNode(SystemZISD::SELECT_CCMASK, DL, PtrVT, Ops);
221     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dest,
224   SDVTList VTs = DAG.getVTList(Dest.getValueType(), MVT::Other);
225   SDValue EndDest = DAG.getNode(SystemZISD::STPCPY, DL, VTs, Chain, Dest, Src,
226                                 DAG.getConstant(0, DL, MVT::i32));
231     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src1,
234   SDVTList VTs = DAG.getVTList(Src1.getValueType(), MVT::i32, MVT::Other);
236   SDValue Unused = DAG.getNode(SystemZISD::STRCMP, DL, VTs, Chain, Src2, Src1,
237                                DAG.getConstant(0, DL, MVT::i32));
240   return std::make_pair(addIPMSequence(DL, CCReg, DAG), Chain);
248 static std::pair<SDValue, SDValue> getBoundedStrlen(SelectionDAG &DAG,
253   SDVTList VTs = DAG.getVTList(PtrVT, MVT::i32, MVT::Other);
254   SDValue End = DAG.getNode(SystemZISD::SEARCH_STRING, DL, VTs, Chain,
255                             Limit, Src, DAG.getConstant(0, DL, MVT::i32));
257   SDValue Len = DAG.getNode(ISD::SUB, DL, PtrVT, End, Src);
262     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src,
265   return getBoundedStrlen(DAG, DL, Chain, Src, DAG.getConstant(0, DL, PtrVT));
269     SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Src,
272   MaxLength = DAG.getZExtOrTrunc(MaxLength, DL, PtrVT);
273   SDValue Limit = DAG.getNode(ISD::ADD, DL, PtrVT, Src, MaxLength);
274   return getBoundedStrlen(DAG, DL, Chain, Src, Limit);