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XCoreISelDAGToDAG.cpp (208954) XCoreISelDAGToDAG.cpp (212904)
1//===-- XCoreISelDAGToDAG.cpp - A dag to dag inst selector for XCore ------===//
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//===----------------------------------------------------------------------===//

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51 SDNode *Select(SDNode *N);
52
53 /// getI32Imm - Return a target constant with the specified value, of type
54 /// i32.
55 inline SDValue getI32Imm(unsigned Imm) {
56 return CurDAG->getTargetConstant(Imm, MVT::i32);
57 }
58
1//===-- XCoreISelDAGToDAG.cpp - A dag to dag inst selector for XCore ------===//
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//===----------------------------------------------------------------------===//

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51 SDNode *Select(SDNode *N);
52
53 /// getI32Imm - Return a target constant with the specified value, of type
54 /// i32.
55 inline SDValue getI32Imm(unsigned Imm) {
56 return CurDAG->getTargetConstant(Imm, MVT::i32);
57 }
58
59 inline bool immMskBitp(SDNode *inN) const {
60 ConstantSDNode *N = cast<ConstantSDNode>(inN);
61 uint32_t value = (uint32_t)N->getZExtValue();
62 if (!isMask_32(value)) {
63 return false;
64 }
65 int msksize = 32 - CountLeadingZeros_32(value);
66 return (msksize >= 1 && msksize <= 8) ||
67 msksize == 16 || msksize == 24 || msksize == 32;
68 }
69
59 // Complex Pattern Selectors.
60 bool SelectADDRspii(SDNode *Op, SDValue Addr, SDValue &Base,
61 SDValue &Offset);
62 bool SelectADDRdpii(SDNode *Op, SDValue Addr, SDValue &Base,
63 SDValue &Offset);
64 bool SelectADDRcpii(SDNode *Op, SDValue Addr, SDValue &Base,
65 SDValue &Offset);
66

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146
147SDNode *XCoreDAGToDAGISel::Select(SDNode *N) {
148 DebugLoc dl = N->getDebugLoc();
149 EVT NVT = N->getValueType(0);
150 if (NVT == MVT::i32) {
151 switch (N->getOpcode()) {
152 default: break;
153 case ISD::Constant: {
70 // Complex Pattern Selectors.
71 bool SelectADDRspii(SDNode *Op, SDValue Addr, SDValue &Base,
72 SDValue &Offset);
73 bool SelectADDRdpii(SDNode *Op, SDValue Addr, SDValue &Base,
74 SDValue &Offset);
75 bool SelectADDRcpii(SDNode *Op, SDValue Addr, SDValue &Base,
76 SDValue &Offset);
77

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157
158SDNode *XCoreDAGToDAGISel::Select(SDNode *N) {
159 DebugLoc dl = N->getDebugLoc();
160 EVT NVT = N->getValueType(0);
161 if (NVT == MVT::i32) {
162 switch (N->getOpcode()) {
163 default: break;
164 case ISD::Constant: {
154 if (Predicate_immMskBitp(N)) {
165 uint64_t Val = cast<ConstantSDNode>(N)->getZExtValue();
166 if (immMskBitp(N)) {
155 // Transformation function: get the size of a mask
167 // Transformation function: get the size of a mask
156 int64_t MaskVal = cast<ConstantSDNode>(N)->getZExtValue();
157 assert(isMask_32(MaskVal));
158 // Look for the first non-zero bit
168 // Look for the first non-zero bit
159 SDValue MskSize = getI32Imm(32 - CountLeadingZeros_32(MaskVal));
169 SDValue MskSize = getI32Imm(32 - CountLeadingZeros_32(Val));
160 return CurDAG->getMachineNode(XCore::MKMSK_rus, dl,
161 MVT::i32, MskSize);
162 }
170 return CurDAG->getMachineNode(XCore::MKMSK_rus, dl,
171 MVT::i32, MskSize);
172 }
163 else if (! Predicate_immU16(N)) {
164 unsigned Val = cast<ConstantSDNode>(N)->getZExtValue();
173 else if (!isUInt<16>(Val)) {
165 SDValue CPIdx =
166 CurDAG->getTargetConstantPool(ConstantInt::get(
167 Type::getInt32Ty(*CurDAG->getContext()), Val),
168 TLI.getPointerTy());
169 return CurDAG->getMachineNode(XCore::LDWCP_lru6, dl, MVT::i32,
170 MVT::Other, CPIdx,
171 CurDAG->getEntryNode());
172 }

--- 37 unchanged lines hidden --- 		174 SDValue CPIdx =
175 CurDAG->getTargetConstantPool(ConstantInt::get(
176 Type::getInt32Ty(*CurDAG->getContext()), Val),
177 TLI.getPointerTy());
178 return CurDAG->getMachineNode(XCore::LDWCP_lru6, dl, MVT::i32,
179 MVT::Other, CPIdx,
180 CurDAG->getEntryNode());
181 }

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