1 // Licensed to the .NET Foundation under one or more agreements.
2 // The .NET Foundation licenses this file to you under the MIT license.
3 // See the LICENSE file in the project root for more information.
6 // This file contains the members of CodeGen that are defined and used
7 // only by the RyuJIT backend. It is included by CodeGen.h in the
8 // definition of the CodeGen class.
11 #ifndef LEGACY_BACKEND // Not necessary (it's this way in the #include location), but helpful to IntelliSense
13 void genSetRegToConst(regNumber targetReg, var_types targetType, GenTreePtr tree);
14 void genCodeForTreeNode(GenTreePtr treeNode);
15 void genCodeForBinary(GenTreePtr treeNode);
17 #if defined(_TARGET_X86_)
18 void genCodeForLongUMod(GenTreeOp* node);
19 #endif // _TARGET_X86_
21 void genCodeForDivMod(GenTreeOp* treeNode);
22 void genCodeForMul(GenTreeOp* treeNode);
23 void genCodeForMulHi(GenTreeOp* treeNode);
24 void genLeaInstruction(GenTreeAddrMode* lea);
25 void genSetRegToCond(regNumber dstReg, GenTreePtr tree);
27 #if defined(_TARGET_ARMARCH_)
28 void genScaledAdd(emitAttr attr, regNumber targetReg, regNumber baseReg, regNumber indexReg, int scale);
29 #endif // _TARGET_ARMARCH_
31 #if defined(_TARGET_ARM_)
32 void genCodeForMulLong(GenTreeMultiRegOp* treeNode);
33 #endif // _TARGET_ARM_
35 #if !defined(_TARGET_64BIT_)
36 void genLongToIntCast(GenTreePtr treeNode);
39 void genIntToIntCast(GenTreePtr treeNode);
40 void genFloatToFloatCast(GenTreePtr treeNode);
41 void genFloatToIntCast(GenTreePtr treeNode);
42 void genIntToFloatCast(GenTreePtr treeNode);
43 void genCkfinite(GenTreePtr treeNode);
44 void genCodeForCompare(GenTreeOp* tree);
45 void genIntrinsic(GenTreePtr treeNode);
46 void genPutArgStk(GenTreePutArgStk* treeNode);
47 void genPutArgReg(GenTreeOp* tree);
49 void genPutArgSplit(GenTreePutArgSplit* treeNode);
52 #if defined(_TARGET_XARCH_)
53 unsigned getBaseVarForPutArgStk(GenTreePtr treeNode);
54 #endif // _TARGET_XARCH_
56 unsigned getFirstArgWithStackSlot();
58 void genCompareFloat(GenTreePtr treeNode);
59 void genCompareInt(GenTreePtr treeNode);
62 enum SIMDScalarMoveType
64 SMT_ZeroInitUpper, // zero initlaize target upper bits
65 SMT_ZeroInitUpper_SrcHasUpperZeros, // zero initialize target upper bits; source upper bits are known to be zero
66 SMT_PreserveUpper // preserve target upper bits
70 insOpts genGetSimdInsOpt(bool is16B, var_types elementType);
72 instruction getOpForSIMDIntrinsic(SIMDIntrinsicID intrinsicId, var_types baseType, unsigned* ival = nullptr);
73 void genSIMDScalarMove(
74 var_types targetType, var_types type, regNumber target, regNumber src, SIMDScalarMoveType moveType);
75 void genSIMDZero(var_types targetType, var_types baseType, regNumber targetReg);
76 void genSIMDIntrinsicInit(GenTreeSIMD* simdNode);
77 void genSIMDIntrinsicInitN(GenTreeSIMD* simdNode);
78 void genSIMDIntrinsicInitArray(GenTreeSIMD* simdNode);
79 void genSIMDIntrinsicUnOp(GenTreeSIMD* simdNode);
80 void genSIMDIntrinsicBinOp(GenTreeSIMD* simdNode);
81 void genSIMDIntrinsicRelOp(GenTreeSIMD* simdNode);
82 void genSIMDIntrinsicDotProduct(GenTreeSIMD* simdNode);
83 void genSIMDIntrinsicSetItem(GenTreeSIMD* simdNode);
84 void genSIMDIntrinsicGetItem(GenTreeSIMD* simdNode);
85 void genSIMDIntrinsicShuffleSSE2(GenTreeSIMD* simdNode);
86 void genSIMDIntrinsicUpperSave(GenTreeSIMD* simdNode);
87 void genSIMDIntrinsicUpperRestore(GenTreeSIMD* simdNode);
88 void genSIMDLo64BitConvert(SIMDIntrinsicID intrinsicID,
94 void genSIMDIntrinsic32BitConvert(GenTreeSIMD* simdNode);
95 void genSIMDIntrinsic64BitConvert(GenTreeSIMD* simdNode);
96 void genSIMDIntrinsicNarrow(GenTreeSIMD* simdNode);
97 void genSIMDExtractUpperHalf(GenTreeSIMD* simdNode, regNumber srcReg, regNumber tgtReg);
98 void genSIMDIntrinsicWiden(GenTreeSIMD* simdNode);
99 void genSIMDIntrinsic(GenTreeSIMD* simdNode);
100 void genSIMDCheck(GenTree* treeNode);
102 // TYP_SIMD12 (i.e Vector3 of size 12 bytes) is not a hardware supported size and requires
103 // two reads/writes on 64-bit targets. These routines abstract reading/writing of Vector3
104 // values through an indirection. Note that Vector3 locals allocated on stack would have
105 // their size rounded to TARGET_POINTER_SIZE (which is 8 bytes on 64-bit targets) and hence
106 // Vector3 locals could be treated as TYP_SIMD16 while reading/writing.
107 void genStoreIndTypeSIMD12(GenTree* treeNode);
108 void genLoadIndTypeSIMD12(GenTree* treeNode);
109 void genStoreLclTypeSIMD12(GenTree* treeNode);
110 void genLoadLclTypeSIMD12(GenTree* treeNode);
112 void genStoreSIMD12ToStack(regNumber operandReg, regNumber tmpReg);
113 void genPutArgStkSIMD12(GenTree* treeNode);
114 #endif // _TARGET_X86_
115 #endif // FEATURE_SIMD
117 #if FEATURE_HW_INTRINSICS
118 void genHWIntrinsic(GenTreeHWIntrinsic* node);
119 void genSSEIntrinsic(GenTreeHWIntrinsic* node);
120 void genSSE2Intrinsic(GenTreeHWIntrinsic* node);
121 void genSSE3Intrinsic(GenTreeHWIntrinsic* node);
122 void genSSSE3Intrinsic(GenTreeHWIntrinsic* node);
123 void genSSE41Intrinsic(GenTreeHWIntrinsic* node);
124 void genSSE42Intrinsic(GenTreeHWIntrinsic* node);
125 void genAVXIntrinsic(GenTreeHWIntrinsic* node);
126 void genAVX2Intrinsic(GenTreeHWIntrinsic* node);
127 void genAESIntrinsic(GenTreeHWIntrinsic* node);
128 void genBMI1Intrinsic(GenTreeHWIntrinsic* node);
129 void genBMI2Intrinsic(GenTreeHWIntrinsic* node);
130 void genFMAIntrinsic(GenTreeHWIntrinsic* node);
131 void genLZCNTIntrinsic(GenTreeHWIntrinsic* node);
132 void genPCLMULQDQIntrinsic(GenTreeHWIntrinsic* node);
133 void genPOPCNTIntrinsic(GenTreeHWIntrinsic* node);
134 #endif // FEATURE_HW_INTRINSICS
136 #if !defined(_TARGET_64BIT_)
138 // CodeGen for Long Ints
140 void genStoreLongLclVar(GenTree* treeNode);
142 #endif // !defined(_TARGET_64BIT_)
144 void genProduceReg(GenTree* tree);
145 void genUnspillRegIfNeeded(GenTree* tree);
146 regNumber genConsumeReg(GenTree* tree);
147 void genCopyRegIfNeeded(GenTree* tree, regNumber needReg);
148 void genConsumeRegAndCopy(GenTree* tree, regNumber needReg);
150 void genConsumeIfReg(GenTreePtr tree)
152 if (!tree->isContained())
154 (void)genConsumeReg(tree);
158 void genRegCopy(GenTreePtr tree);
159 void genTransferRegGCState(regNumber dst, regNumber src);
160 void genConsumeAddress(GenTree* addr);
161 void genConsumeAddrMode(GenTreeAddrMode* mode);
162 void genSetBlockSize(GenTreeBlk* blkNode, regNumber sizeReg);
163 void genConsumeBlockSrc(GenTreeBlk* blkNode);
164 void genSetBlockSrc(GenTreeBlk* blkNode, regNumber srcReg);
165 void genConsumeBlockOp(GenTreeBlk* blkNode, regNumber dstReg, regNumber srcReg, regNumber sizeReg);
167 #ifdef FEATURE_PUT_STRUCT_ARG_STK
168 void genConsumePutStructArgStk(GenTreePutArgStk* putArgStkNode, regNumber dstReg, regNumber srcReg, regNumber sizeReg);
169 #endif // FEATURE_PUT_STRUCT_ARG_STK
171 void genConsumeArgSplitStruct(GenTreePutArgSplit* putArgNode);
174 void genConsumeRegs(GenTree* tree);
175 void genConsumeOperands(GenTreeOp* tree);
176 void genEmitGSCookieCheck(bool pushReg);
177 void genSetRegToIcon(regNumber reg, ssize_t val, var_types type = TYP_INT, insFlags flags = INS_FLAGS_DONT_CARE);
178 void genCodeForShift(GenTreePtr tree);
180 #if defined(_TARGET_X86_) || defined(_TARGET_ARM_)
181 void genCodeForShiftLong(GenTreePtr tree);
184 #ifdef _TARGET_XARCH_
185 void genCodeForShiftRMW(GenTreeStoreInd* storeInd);
186 void genCodeForBT(GenTreeOp* bt);
187 #endif // _TARGET_XARCH_
189 void genCodeForCast(GenTreeOp* tree);
190 void genCodeForLclAddr(GenTree* tree);
191 void genCodeForIndexAddr(GenTreeIndexAddr* tree);
192 void genCodeForIndir(GenTreeIndir* tree);
193 void genCodeForNegNot(GenTree* tree);
194 void genCodeForLclVar(GenTreeLclVar* tree);
195 void genCodeForLclFld(GenTreeLclFld* tree);
196 void genCodeForStoreLclFld(GenTreeLclFld* tree);
197 void genCodeForStoreLclVar(GenTreeLclVar* tree);
198 void genCodeForReturnTrap(GenTreeOp* tree);
199 void genCodeForJcc(GenTreeCC* tree);
200 void genCodeForSetcc(GenTreeCC* setcc);
201 void genCodeForStoreInd(GenTreeStoreInd* tree);
202 void genCodeForSwap(GenTreeOp* tree);
203 void genCodeForCpObj(GenTreeObj* cpObjNode);
204 void genCodeForCpBlk(GenTreeBlk* cpBlkNode);
205 void genCodeForCpBlkRepMovs(GenTreeBlk* cpBlkNode);
206 void genCodeForCpBlkUnroll(GenTreeBlk* cpBlkNode);
207 void genCodeForPhysReg(GenTreePhysReg* tree);
208 void genCodeForNullCheck(GenTreeOp* tree);
209 void genCodeForCmpXchg(GenTreeCmpXchg* tree);
211 void genAlignStackBeforeCall(GenTreePutArgStk* putArgStk);
212 void genAlignStackBeforeCall(GenTreeCall* call);
213 void genRemoveAlignmentAfterCall(GenTreeCall* call, unsigned bias = 0);
215 #if defined(UNIX_X86_ABI)
217 unsigned curNestedAlignment; // Keep track of alignment adjustment required during codegen.
218 unsigned maxNestedAlignment; // The maximum amount of alignment adjustment required.
220 void SubtractNestedAlignment(unsigned adjustment)
222 assert(curNestedAlignment >= adjustment);
223 unsigned newNestedAlignment = curNestedAlignment - adjustment;
224 if (curNestedAlignment != newNestedAlignment)
226 JITDUMP("Adjusting stack nested alignment from %d to %d\n", curNestedAlignment, newNestedAlignment);
228 curNestedAlignment = newNestedAlignment;
231 void AddNestedAlignment(unsigned adjustment)
233 unsigned newNestedAlignment = curNestedAlignment + adjustment;
234 if (curNestedAlignment != newNestedAlignment)
236 JITDUMP("Adjusting stack nested alignment from %d to %d\n", curNestedAlignment, newNestedAlignment);
238 curNestedAlignment = newNestedAlignment;
240 if (curNestedAlignment > maxNestedAlignment)
242 JITDUMP("Max stack nested alignment changed from %d to %d\n", maxNestedAlignment, curNestedAlignment);
243 maxNestedAlignment = curNestedAlignment;
249 #ifdef FEATURE_PUT_STRUCT_ARG_STK
251 bool genAdjustStackForPutArgStk(GenTreePutArgStk* putArgStk);
252 void genPushReg(var_types type, regNumber srcReg);
253 void genPutArgStkFieldList(GenTreePutArgStk* putArgStk);
254 #endif // _TARGET_X86_
256 void genPutStructArgStk(GenTreePutArgStk* treeNode);
258 unsigned genMove8IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
259 unsigned genMove4IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
260 unsigned genMove2IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
261 unsigned genMove1IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
262 void genStructPutArgRepMovs(GenTreePutArgStk* putArgStkNode);
263 void genStructPutArgUnroll(GenTreePutArgStk* putArgStkNode);
264 void genStoreRegToStackArg(var_types type, regNumber reg, int offset);
265 #endif // FEATURE_PUT_STRUCT_ARG_STK
267 void genCodeForLoadOffset(instruction ins, emitAttr size, regNumber dst, GenTree* base, unsigned offset);
268 void genCodeForStoreOffset(instruction ins, emitAttr size, regNumber src, GenTree* base, unsigned offset);
270 #ifdef _TARGET_ARM64_
271 void genCodeForLoadPairOffset(regNumber dst, regNumber dst2, GenTree* base, unsigned offset);
272 void genCodeForStorePairOffset(regNumber src, regNumber src2, GenTree* base, unsigned offset);
273 #endif // _TARGET_ARM64_
275 void genCodeForStoreBlk(GenTreeBlk* storeBlkNode);
276 void genCodeForInitBlk(GenTreeBlk* initBlkNode);
277 void genCodeForInitBlkRepStos(GenTreeBlk* initBlkNode);
278 void genCodeForInitBlkUnroll(GenTreeBlk* initBlkNode);
279 void genJumpTable(GenTree* tree);
280 void genTableBasedSwitch(GenTree* tree);
281 void genCodeForArrIndex(GenTreeArrIndex* treeNode);
282 void genCodeForArrOffset(GenTreeArrOffs* treeNode);
283 instruction genGetInsForOper(genTreeOps oper, var_types type);
284 bool genEmitOptimizedGCWriteBarrier(GCInfo::WriteBarrierForm writeBarrierForm, GenTree* addr, GenTree* data);
285 void genCallInstruction(GenTreeCall* call);
286 void genJmpMethod(GenTreePtr jmp);
287 BasicBlock* genCallFinally(BasicBlock* block);
288 void genCodeForJumpTrue(GenTreePtr tree);
289 #ifdef _TARGET_ARM64_
290 void genCodeForJumpCompare(GenTreeOp* tree);
291 #endif // _TARGET_ARM64_
293 #if FEATURE_EH_FUNCLETS
294 void genEHCatchRet(BasicBlock* block);
295 #else // !FEATURE_EH_FUNCLETS
296 void genEHFinallyOrFilterRet(BasicBlock* block);
297 #endif // !FEATURE_EH_FUNCLETS
299 void genMultiRegCallStoreToLocal(GenTreePtr treeNode);
301 // Deals with codegen for muti-register struct returns.
302 bool isStructReturn(GenTreePtr treeNode);
303 void genStructReturn(GenTreePtr treeNode);
305 void genReturn(GenTreePtr treeNode);
307 void genLclHeap(GenTreePtr tree);
309 bool genIsRegCandidateLocal(GenTreePtr tree)
311 if (!tree->IsLocal())
315 const LclVarDsc* varDsc = &compiler->lvaTable[tree->gtLclVarCommon.gtLclNum];
316 return (varDsc->lvIsRegCandidate());
319 #ifdef FEATURE_PUT_STRUCT_ARG_STK
322 #else // !_TARGET_X86_
323 unsigned m_stkArgVarNum;
324 unsigned m_stkArgOffset;
325 #endif // !_TARGET_X86_
326 #endif // !FEATURE_PUT_STRUCT_ARG_STK
329 GenTree* lastConsumedNode;
330 void genNumberOperandUse(GenTree* const operand, int& useNum) const;
331 void genCheckConsumeNode(GenTree* const node);
333 inline void genCheckConsumeNode(GenTree* treeNode)
338 #endif // !LEGACY_BACKEND