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 #ifdef FEATURE_HW_INTRINSICS
118 void genHWIntrinsic(GenTreeHWIntrinsic* node);
119 #if defined(_TARGET_XARCH_)
120 void genHWIntrinsic_R_R_RM(GenTreeHWIntrinsic* node, instruction ins);
121 void genHWIntrinsic_R_R_RM_I(GenTreeHWIntrinsic* node, instruction ins);
122 void genSSEIntrinsic(GenTreeHWIntrinsic* node);
123 void genSSE2Intrinsic(GenTreeHWIntrinsic* node);
124 void genSSE3Intrinsic(GenTreeHWIntrinsic* node);
125 void genSSSE3Intrinsic(GenTreeHWIntrinsic* node);
126 void genSSE41Intrinsic(GenTreeHWIntrinsic* node);
127 void genSSE42Intrinsic(GenTreeHWIntrinsic* node);
128 void genAVXIntrinsic(GenTreeHWIntrinsic* node);
129 void genAVX2Intrinsic(GenTreeHWIntrinsic* node);
130 void genAESIntrinsic(GenTreeHWIntrinsic* node);
131 void genBMI1Intrinsic(GenTreeHWIntrinsic* node);
132 void genBMI2Intrinsic(GenTreeHWIntrinsic* node);
133 void genFMAIntrinsic(GenTreeHWIntrinsic* node);
134 void genLZCNTIntrinsic(GenTreeHWIntrinsic* node);
135 void genPCLMULQDQIntrinsic(GenTreeHWIntrinsic* node);
136 void genPOPCNTIntrinsic(GenTreeHWIntrinsic* node);
137 #endif // defined(_TARGET_XARCH_)
138 #if defined(_TARGET_ARM64_)
139 instruction getOpForHWIntrinsic(GenTreeHWIntrinsic* node, var_types instrType);
140 void genHWIntrinsicUnaryOp(GenTreeHWIntrinsic* node);
141 void genHWIntrinsicCrcOp(GenTreeHWIntrinsic* node);
142 void genHWIntrinsicSimdBinaryOp(GenTreeHWIntrinsic* node);
143 void genHWIntrinsicSimdExtractOp(GenTreeHWIntrinsic* node);
144 void genHWIntrinsicSimdInsertOp(GenTreeHWIntrinsic* node);
145 void genHWIntrinsicSimdSelectOp(GenTreeHWIntrinsic* node);
146 void genHWIntrinsicSimdUnaryOp(GenTreeHWIntrinsic* node);
147 #endif // defined(_TARGET_XARCH_)
148 #endif // FEATURE_HW_INTRINSICS
150 #if !defined(_TARGET_64BIT_)
152 // CodeGen for Long Ints
154 void genStoreLongLclVar(GenTree* treeNode);
156 #endif // !defined(_TARGET_64BIT_)
158 void genProduceReg(GenTree* tree);
159 void genUnspillRegIfNeeded(GenTree* tree);
160 regNumber genConsumeReg(GenTree* tree);
161 void genCopyRegIfNeeded(GenTree* tree, regNumber needReg);
162 void genConsumeRegAndCopy(GenTree* tree, regNumber needReg);
164 void genConsumeIfReg(GenTreePtr tree)
166 if (!tree->isContained())
168 (void)genConsumeReg(tree);
172 void genRegCopy(GenTreePtr tree);
173 void genTransferRegGCState(regNumber dst, regNumber src);
174 void genConsumeAddress(GenTree* addr);
175 void genConsumeAddrMode(GenTreeAddrMode* mode);
176 void genSetBlockSize(GenTreeBlk* blkNode, regNumber sizeReg);
177 void genConsumeBlockSrc(GenTreeBlk* blkNode);
178 void genSetBlockSrc(GenTreeBlk* blkNode, regNumber srcReg);
179 void genConsumeBlockOp(GenTreeBlk* blkNode, regNumber dstReg, regNumber srcReg, regNumber sizeReg);
181 #ifdef FEATURE_PUT_STRUCT_ARG_STK
182 void genConsumePutStructArgStk(GenTreePutArgStk* putArgStkNode, regNumber dstReg, regNumber srcReg, regNumber sizeReg);
183 #endif // FEATURE_PUT_STRUCT_ARG_STK
185 void genConsumeArgSplitStruct(GenTreePutArgSplit* putArgNode);
188 void genConsumeRegs(GenTree* tree);
189 void genConsumeOperands(GenTreeOp* tree);
190 void genEmitGSCookieCheck(bool pushReg);
191 void genSetRegToIcon(regNumber reg, ssize_t val, var_types type = TYP_INT, insFlags flags = INS_FLAGS_DONT_CARE);
192 void genCodeForShift(GenTreePtr tree);
194 #if defined(_TARGET_X86_) || defined(_TARGET_ARM_)
195 void genCodeForShiftLong(GenTreePtr tree);
198 #ifdef _TARGET_XARCH_
199 void genCodeForShiftRMW(GenTreeStoreInd* storeInd);
200 void genCodeForBT(GenTreeOp* bt);
201 #endif // _TARGET_XARCH_
203 void genCodeForCast(GenTreeOp* tree);
204 void genCodeForLclAddr(GenTree* tree);
205 void genCodeForIndexAddr(GenTreeIndexAddr* tree);
206 void genCodeForIndir(GenTreeIndir* tree);
207 void genCodeForNegNot(GenTree* tree);
208 void genCodeForLclVar(GenTreeLclVar* tree);
209 void genCodeForLclFld(GenTreeLclFld* tree);
210 void genCodeForStoreLclFld(GenTreeLclFld* tree);
211 void genCodeForStoreLclVar(GenTreeLclVar* tree);
212 void genCodeForReturnTrap(GenTreeOp* tree);
213 void genCodeForJcc(GenTreeCC* tree);
214 void genCodeForSetcc(GenTreeCC* setcc);
215 void genCodeForStoreInd(GenTreeStoreInd* tree);
216 void genCodeForSwap(GenTreeOp* tree);
217 void genCodeForCpObj(GenTreeObj* cpObjNode);
218 void genCodeForCpBlk(GenTreeBlk* cpBlkNode);
219 void genCodeForCpBlkRepMovs(GenTreeBlk* cpBlkNode);
220 void genCodeForCpBlkUnroll(GenTreeBlk* cpBlkNode);
221 void genCodeForPhysReg(GenTreePhysReg* tree);
222 void genCodeForNullCheck(GenTreeOp* tree);
223 void genCodeForCmpXchg(GenTreeCmpXchg* tree);
225 void genAlignStackBeforeCall(GenTreePutArgStk* putArgStk);
226 void genAlignStackBeforeCall(GenTreeCall* call);
227 void genRemoveAlignmentAfterCall(GenTreeCall* call, unsigned bias = 0);
229 #if defined(UNIX_X86_ABI)
231 unsigned curNestedAlignment; // Keep track of alignment adjustment required during codegen.
232 unsigned maxNestedAlignment; // The maximum amount of alignment adjustment required.
234 void SubtractNestedAlignment(unsigned adjustment)
236 assert(curNestedAlignment >= adjustment);
237 unsigned newNestedAlignment = curNestedAlignment - adjustment;
238 if (curNestedAlignment != newNestedAlignment)
240 JITDUMP("Adjusting stack nested alignment from %d to %d\n", curNestedAlignment, newNestedAlignment);
242 curNestedAlignment = newNestedAlignment;
245 void AddNestedAlignment(unsigned adjustment)
247 unsigned newNestedAlignment = curNestedAlignment + adjustment;
248 if (curNestedAlignment != newNestedAlignment)
250 JITDUMP("Adjusting stack nested alignment from %d to %d\n", curNestedAlignment, newNestedAlignment);
252 curNestedAlignment = newNestedAlignment;
254 if (curNestedAlignment > maxNestedAlignment)
256 JITDUMP("Max stack nested alignment changed from %d to %d\n", maxNestedAlignment, curNestedAlignment);
257 maxNestedAlignment = curNestedAlignment;
263 #ifdef FEATURE_PUT_STRUCT_ARG_STK
265 bool genAdjustStackForPutArgStk(GenTreePutArgStk* putArgStk);
266 void genPushReg(var_types type, regNumber srcReg);
267 void genPutArgStkFieldList(GenTreePutArgStk* putArgStk);
268 #endif // _TARGET_X86_
270 void genPutStructArgStk(GenTreePutArgStk* treeNode);
272 unsigned genMove8IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
273 unsigned genMove4IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
274 unsigned genMove2IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
275 unsigned genMove1IfNeeded(unsigned size, regNumber tmpReg, GenTree* srcAddr, unsigned offset);
276 void genStructPutArgRepMovs(GenTreePutArgStk* putArgStkNode);
277 void genStructPutArgUnroll(GenTreePutArgStk* putArgStkNode);
278 void genStoreRegToStackArg(var_types type, regNumber reg, int offset);
279 #endif // FEATURE_PUT_STRUCT_ARG_STK
281 void genCodeForLoadOffset(instruction ins, emitAttr size, regNumber dst, GenTree* base, unsigned offset);
282 void genCodeForStoreOffset(instruction ins, emitAttr size, regNumber src, GenTree* base, unsigned offset);
284 #ifdef _TARGET_ARM64_
285 void genCodeForLoadPairOffset(regNumber dst, regNumber dst2, GenTree* base, unsigned offset);
286 void genCodeForStorePairOffset(regNumber src, regNumber src2, GenTree* base, unsigned offset);
287 #endif // _TARGET_ARM64_
289 void genCodeForStoreBlk(GenTreeBlk* storeBlkNode);
290 void genCodeForInitBlk(GenTreeBlk* initBlkNode);
291 void genCodeForInitBlkRepStos(GenTreeBlk* initBlkNode);
292 void genCodeForInitBlkUnroll(GenTreeBlk* initBlkNode);
293 void genJumpTable(GenTree* tree);
294 void genTableBasedSwitch(GenTree* tree);
295 void genCodeForArrIndex(GenTreeArrIndex* treeNode);
296 void genCodeForArrOffset(GenTreeArrOffs* treeNode);
297 instruction genGetInsForOper(genTreeOps oper, var_types type);
298 bool genEmitOptimizedGCWriteBarrier(GCInfo::WriteBarrierForm writeBarrierForm, GenTree* addr, GenTree* data);
299 void genCallInstruction(GenTreeCall* call);
300 void genJmpMethod(GenTreePtr jmp);
301 BasicBlock* genCallFinally(BasicBlock* block);
302 void genCodeForJumpTrue(GenTreePtr tree);
303 #ifdef _TARGET_ARM64_
304 void genCodeForJumpCompare(GenTreeOp* tree);
305 #endif // _TARGET_ARM64_
307 #if FEATURE_EH_FUNCLETS
308 void genEHCatchRet(BasicBlock* block);
309 #else // !FEATURE_EH_FUNCLETS
310 void genEHFinallyOrFilterRet(BasicBlock* block);
311 #endif // !FEATURE_EH_FUNCLETS
313 void genMultiRegCallStoreToLocal(GenTreePtr treeNode);
315 // Deals with codegen for muti-register struct returns.
316 bool isStructReturn(GenTreePtr treeNode);
317 void genStructReturn(GenTreePtr treeNode);
319 void genReturn(GenTreePtr treeNode);
321 void genLclHeap(GenTreePtr tree);
323 bool genIsRegCandidateLocal(GenTreePtr tree)
325 if (!tree->IsLocal())
329 const LclVarDsc* varDsc = &compiler->lvaTable[tree->gtLclVarCommon.gtLclNum];
330 return (varDsc->lvIsRegCandidate());
333 #ifdef FEATURE_PUT_STRUCT_ARG_STK
336 #else // !_TARGET_X86_
337 unsigned m_stkArgVarNum;
338 unsigned m_stkArgOffset;
339 #endif // !_TARGET_X86_
340 #endif // !FEATURE_PUT_STRUCT_ARG_STK
343 GenTree* lastConsumedNode;
344 void genNumberOperandUse(GenTree* const operand, int& useNum) const;
345 void genCheckConsumeNode(GenTree* const node);
347 inline void genCheckConsumeNode(GenTree* treeNode)
352 #endif // !LEGACY_BACKEND