1 //===---- llvm/unittest/CodeGen/SelectionDAGPatternMatchTest.cpp ---------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/Analysis/OptimizationRemarkEmitter.h" 10 #include "llvm/AsmParser/Parser.h" 11 #include "llvm/CodeGen/MachineModuleInfo.h" 12 #include "llvm/CodeGen/SDPatternMatch.h" 13 #include "llvm/CodeGen/TargetLowering.h" 14 #include "llvm/IR/Module.h" 15 #include "llvm/MC/TargetRegistry.h" 16 #include "llvm/Support/SourceMgr.h" 17 #include "llvm/Support/TargetSelect.h" 18 #include "llvm/Target/TargetMachine.h" 19 #include "gtest/gtest.h" 20 21 using namespace llvm; 22 23 class SelectionDAGPatternMatchTest : public testing::Test { 24 protected: 25 static void SetUpTestCase() { 26 InitializeAllTargets(); 27 InitializeAllTargetMCs(); 28 } 29 30 void SetUp() override { 31 StringRef Assembly = "@g = global i32 0\n" 32 "@g_alias = alias i32, i32* @g\n" 33 "define i32 @f() {\n" 34 " %1 = load i32, i32* @g\n" 35 " ret i32 %1\n" 36 "}"; 37 38 Triple TargetTriple("riscv64--"); 39 std::string Error; 40 const Target *T = TargetRegistry::lookupTarget("", TargetTriple, Error); 41 // FIXME: These tests do not depend on RISCV specifically, but we have to 42 // initialize a target. A skeleton Target for unittests would allow us to 43 // always run these tests. 44 if (!T) 45 GTEST_SKIP(); 46 47 TargetOptions Options; 48 TM = std::unique_ptr<LLVMTargetMachine>(static_cast<LLVMTargetMachine *>( 49 T->createTargetMachine("riscv64", "", "+m,+f,+d,+v", Options, 50 std::nullopt, std::nullopt, 51 CodeGenOptLevel::Aggressive))); 52 if (!TM) 53 GTEST_SKIP(); 54 55 SMDiagnostic SMError; 56 M = parseAssemblyString(Assembly, SMError, Context); 57 if (!M) 58 report_fatal_error(SMError.getMessage()); 59 M->setDataLayout(TM->createDataLayout()); 60 61 F = M->getFunction("f"); 62 if (!F) 63 report_fatal_error("F?"); 64 G = M->getGlobalVariable("g"); 65 if (!G) 66 report_fatal_error("G?"); 67 AliasedG = M->getNamedAlias("g_alias"); 68 if (!AliasedG) 69 report_fatal_error("AliasedG?"); 70 71 MachineModuleInfo MMI(TM.get()); 72 73 MF = std::make_unique<MachineFunction>(*F, *TM, *TM->getSubtargetImpl(*F), 74 MMI.getContext(), 0); 75 76 DAG = std::make_unique<SelectionDAG>(*TM, CodeGenOptLevel::None); 77 if (!DAG) 78 report_fatal_error("DAG?"); 79 OptimizationRemarkEmitter ORE(F); 80 DAG->init(*MF, ORE, nullptr, nullptr, nullptr, nullptr, nullptr, MMI, 81 nullptr); 82 } 83 84 TargetLoweringBase::LegalizeTypeAction getTypeAction(EVT VT) { 85 return DAG->getTargetLoweringInfo().getTypeAction(Context, VT); 86 } 87 88 EVT getTypeToTransformTo(EVT VT) { 89 return DAG->getTargetLoweringInfo().getTypeToTransformTo(Context, VT); 90 } 91 92 LLVMContext Context; 93 std::unique_ptr<LLVMTargetMachine> TM; 94 std::unique_ptr<Module> M; 95 Function *F; 96 GlobalVariable *G; 97 GlobalAlias *AliasedG; 98 std::unique_ptr<MachineFunction> MF; 99 std::unique_ptr<SelectionDAG> DAG; 100 }; 101 102 TEST_F(SelectionDAGPatternMatchTest, matchValueType) { 103 SDLoc DL; 104 auto Int32VT = EVT::getIntegerVT(Context, 32); 105 auto Float32VT = EVT::getFloatingPointVT(32); 106 auto VInt32VT = EVT::getVectorVT(Context, Int32VT, 4); 107 108 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 109 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, Float32VT); 110 SDValue Op2 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, VInt32VT); 111 112 using namespace SDPatternMatch; 113 EXPECT_TRUE(sd_match(Op0, m_SpecificVT(Int32VT))); 114 EVT BindVT; 115 EXPECT_TRUE(sd_match(Op1, m_VT(BindVT))); 116 EXPECT_EQ(BindVT, Float32VT); 117 EXPECT_TRUE(sd_match(Op0, m_IntegerVT())); 118 EXPECT_TRUE(sd_match(Op1, m_FloatingPointVT())); 119 EXPECT_TRUE(sd_match(Op2, m_VectorVT())); 120 EXPECT_FALSE(sd_match(Op2, m_ScalableVectorVT())); 121 } 122 123 TEST_F(SelectionDAGPatternMatchTest, matchTernaryOp) { 124 SDLoc DL; 125 auto Int32VT = EVT::getIntegerVT(Context, 32); 126 127 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 128 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, Int32VT); 129 130 SDValue ICMP_UGT = DAG->getSetCC(DL, MVT::i1, Op0, Op1, ISD::SETUGT); 131 SDValue ICMP_EQ01 = DAG->getSetCC(DL, MVT::i1, Op0, Op1, ISD::SETEQ); 132 SDValue ICMP_EQ10 = DAG->getSetCC(DL, MVT::i1, Op1, Op0, ISD::SETEQ); 133 134 using namespace SDPatternMatch; 135 ISD::CondCode CC; 136 EXPECT_TRUE(sd_match(ICMP_UGT, m_SetCC(m_Value(), m_Value(), 137 m_SpecificCondCode(ISD::SETUGT)))); 138 EXPECT_TRUE( 139 sd_match(ICMP_UGT, m_SetCC(m_Value(), m_Value(), m_CondCode(CC)))); 140 EXPECT_TRUE(CC == ISD::SETUGT); 141 EXPECT_FALSE(sd_match( 142 ICMP_UGT, m_SetCC(m_Value(), m_Value(), m_SpecificCondCode(ISD::SETLE)))); 143 144 EXPECT_TRUE(sd_match(ICMP_EQ01, m_SetCC(m_Specific(Op0), m_Specific(Op1), 145 m_SpecificCondCode(ISD::SETEQ)))); 146 EXPECT_TRUE(sd_match(ICMP_EQ10, m_SetCC(m_Specific(Op1), m_Specific(Op0), 147 m_SpecificCondCode(ISD::SETEQ)))); 148 EXPECT_FALSE(sd_match(ICMP_EQ01, m_SetCC(m_Specific(Op1), m_Specific(Op0), 149 m_SpecificCondCode(ISD::SETEQ)))); 150 EXPECT_FALSE(sd_match(ICMP_EQ10, m_SetCC(m_Specific(Op0), m_Specific(Op1), 151 m_SpecificCondCode(ISD::SETEQ)))); 152 EXPECT_TRUE(sd_match(ICMP_EQ01, m_c_SetCC(m_Specific(Op1), m_Specific(Op0), 153 m_SpecificCondCode(ISD::SETEQ)))); 154 EXPECT_TRUE(sd_match(ICMP_EQ10, m_c_SetCC(m_Specific(Op0), m_Specific(Op1), 155 m_SpecificCondCode(ISD::SETEQ)))); 156 } 157 158 TEST_F(SelectionDAGPatternMatchTest, matchBinaryOp) { 159 SDLoc DL; 160 auto Int32VT = EVT::getIntegerVT(Context, 32); 161 auto Float32VT = EVT::getFloatingPointVT(32); 162 163 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 164 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, Int32VT); 165 SDValue Op2 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 3, Float32VT); 166 167 SDValue Add = DAG->getNode(ISD::ADD, DL, Int32VT, Op0, Op1); 168 SDValue Sub = DAG->getNode(ISD::SUB, DL, Int32VT, Add, Op0); 169 SDValue Mul = DAG->getNode(ISD::MUL, DL, Int32VT, Add, Sub); 170 SDValue And = DAG->getNode(ISD::AND, DL, Int32VT, Op0, Op1); 171 SDValue Xor = DAG->getNode(ISD::XOR, DL, Int32VT, Op1, Op0); 172 SDValue Or = DAG->getNode(ISD::OR, DL, Int32VT, Op0, Op1); 173 SDValue SMax = DAG->getNode(ISD::SMAX, DL, Int32VT, Op0, Op1); 174 SDValue SMin = DAG->getNode(ISD::SMIN, DL, Int32VT, Op1, Op0); 175 SDValue UMax = DAG->getNode(ISD::UMAX, DL, Int32VT, Op0, Op1); 176 SDValue UMin = DAG->getNode(ISD::UMIN, DL, Int32VT, Op1, Op0); 177 178 SDValue SFAdd = DAG->getNode(ISD::STRICT_FADD, DL, {Float32VT, MVT::Other}, 179 {DAG->getEntryNode(), Op2, Op2}); 180 181 using namespace SDPatternMatch; 182 EXPECT_TRUE(sd_match(Sub, m_BinOp(ISD::SUB, m_Value(), m_Value()))); 183 EXPECT_TRUE(sd_match(Sub, m_Sub(m_Value(), m_Value()))); 184 EXPECT_TRUE(sd_match(Add, m_c_BinOp(ISD::ADD, m_Value(), m_Value()))); 185 EXPECT_TRUE(sd_match(Add, m_Add(m_Value(), m_Value()))); 186 EXPECT_TRUE(sd_match( 187 Mul, m_Mul(m_OneUse(m_Opc(ISD::SUB)), m_NUses<2>(m_Specific(Add))))); 188 EXPECT_TRUE( 189 sd_match(SFAdd, m_ChainedBinOp(ISD::STRICT_FADD, m_SpecificVT(Float32VT), 190 m_SpecificVT(Float32VT)))); 191 192 EXPECT_TRUE(sd_match(And, m_c_BinOp(ISD::AND, m_Value(), m_Value()))); 193 EXPECT_TRUE(sd_match(And, m_And(m_Value(), m_Value()))); 194 EXPECT_TRUE(sd_match(Xor, m_c_BinOp(ISD::XOR, m_Value(), m_Value()))); 195 EXPECT_TRUE(sd_match(Xor, m_Xor(m_Value(), m_Value()))); 196 EXPECT_TRUE(sd_match(Or, m_c_BinOp(ISD::OR, m_Value(), m_Value()))); 197 EXPECT_TRUE(sd_match(Or, m_Or(m_Value(), m_Value()))); 198 199 EXPECT_TRUE(sd_match(SMax, m_c_BinOp(ISD::SMAX, m_Value(), m_Value()))); 200 EXPECT_TRUE(sd_match(SMax, m_SMax(m_Value(), m_Value()))); 201 EXPECT_TRUE(sd_match(SMin, m_c_BinOp(ISD::SMIN, m_Value(), m_Value()))); 202 EXPECT_TRUE(sd_match(SMin, m_SMin(m_Value(), m_Value()))); 203 EXPECT_TRUE(sd_match(UMax, m_c_BinOp(ISD::UMAX, m_Value(), m_Value()))); 204 EXPECT_TRUE(sd_match(UMax, m_UMax(m_Value(), m_Value()))); 205 EXPECT_TRUE(sd_match(UMin, m_c_BinOp(ISD::UMIN, m_Value(), m_Value()))); 206 EXPECT_TRUE(sd_match(UMin, m_UMin(m_Value(), m_Value()))); 207 208 SDValue BindVal; 209 EXPECT_TRUE(sd_match(SFAdd, m_ChainedBinOp(ISD::STRICT_FADD, m_Value(BindVal), 210 m_Deferred(BindVal)))); 211 EXPECT_FALSE(sd_match(SFAdd, m_ChainedBinOp(ISD::STRICT_FADD, m_OtherVT(), 212 m_SpecificVT(Float32VT)))); 213 } 214 215 TEST_F(SelectionDAGPatternMatchTest, matchUnaryOp) { 216 SDLoc DL; 217 auto Int32VT = EVT::getIntegerVT(Context, 32); 218 auto Int64VT = EVT::getIntegerVT(Context, 64); 219 220 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 221 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int64VT); 222 223 SDValue ZExt = DAG->getNode(ISD::ZERO_EXTEND, DL, Int64VT, Op0); 224 SDValue SExt = DAG->getNode(ISD::SIGN_EXTEND, DL, Int64VT, Op0); 225 SDValue Trunc = DAG->getNode(ISD::TRUNCATE, DL, Int32VT, Op1); 226 227 SDValue Sub = DAG->getNode(ISD::SUB, DL, Int32VT, Trunc, Op0); 228 SDValue Neg = DAG->getNegative(Op0, DL, Int32VT); 229 SDValue Not = DAG->getNOT(DL, Op0, Int32VT); 230 231 using namespace SDPatternMatch; 232 EXPECT_TRUE(sd_match(ZExt, m_UnaryOp(ISD::ZERO_EXTEND, m_Value()))); 233 EXPECT_TRUE(sd_match(SExt, m_SExt(m_Value()))); 234 EXPECT_TRUE(sd_match(Trunc, m_Trunc(m_Specific(Op1)))); 235 236 EXPECT_TRUE(sd_match(Neg, m_Neg(m_Value()))); 237 EXPECT_TRUE(sd_match(Not, m_Not(m_Value()))); 238 EXPECT_FALSE(sd_match(ZExt, m_Neg(m_Value()))); 239 EXPECT_FALSE(sd_match(Sub, m_Neg(m_Value()))); 240 EXPECT_FALSE(sd_match(Neg, m_Not(m_Value()))); 241 } 242 243 TEST_F(SelectionDAGPatternMatchTest, matchConstants) { 244 SDLoc DL; 245 auto Int32VT = EVT::getIntegerVT(Context, 32); 246 auto VInt32VT = EVT::getVectorVT(Context, Int32VT, 4); 247 248 SDValue Arg0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 249 250 SDValue Const3 = DAG->getConstant(3, DL, Int32VT); 251 SDValue Const87 = DAG->getConstant(87, DL, Int32VT); 252 SDValue Splat = DAG->getSplat(VInt32VT, DL, Arg0); 253 SDValue ConstSplat = DAG->getSplat(VInt32VT, DL, Const3); 254 SDValue Zero = DAG->getConstant(0, DL, Int32VT); 255 SDValue One = DAG->getConstant(1, DL, Int32VT); 256 SDValue AllOnes = DAG->getConstant(APInt::getAllOnes(32), DL, Int32VT); 257 SDValue SetCC = DAG->getSetCC(DL, Int32VT, Arg0, Const3, ISD::SETULT); 258 259 using namespace SDPatternMatch; 260 EXPECT_TRUE(sd_match(Const87, m_ConstInt())); 261 EXPECT_FALSE(sd_match(Arg0, m_ConstInt())); 262 APInt ConstVal; 263 EXPECT_TRUE(sd_match(ConstSplat, m_ConstInt(ConstVal))); 264 EXPECT_EQ(ConstVal, 3); 265 EXPECT_FALSE(sd_match(Splat, m_ConstInt())); 266 267 EXPECT_TRUE(sd_match(Const87, m_SpecificInt(87))); 268 EXPECT_TRUE(sd_match(Const3, m_SpecificInt(ConstVal))); 269 EXPECT_TRUE(sd_match(AllOnes, m_AllOnes())); 270 271 EXPECT_TRUE(sd_match(Zero, DAG.get(), m_False())); 272 EXPECT_TRUE(sd_match(One, DAG.get(), m_True())); 273 EXPECT_FALSE(sd_match(AllOnes, DAG.get(), m_True())); 274 275 ISD::CondCode CC; 276 EXPECT_TRUE(sd_match( 277 SetCC, m_Node(ISD::SETCC, m_Value(), m_Value(), m_CondCode(CC)))); 278 EXPECT_EQ(CC, ISD::SETULT); 279 EXPECT_TRUE(sd_match(SetCC, m_Node(ISD::SETCC, m_Value(), m_Value(), 280 m_SpecificCondCode(ISD::SETULT)))); 281 } 282 283 TEST_F(SelectionDAGPatternMatchTest, patternCombinators) { 284 SDLoc DL; 285 auto Int32VT = EVT::getIntegerVT(Context, 32); 286 287 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 288 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, Int32VT); 289 290 SDValue Add = DAG->getNode(ISD::ADD, DL, Int32VT, Op0, Op1); 291 SDValue Sub = DAG->getNode(ISD::SUB, DL, Int32VT, Add, Op0); 292 293 using namespace SDPatternMatch; 294 EXPECT_TRUE(sd_match( 295 Sub, m_AnyOf(m_Opc(ISD::ADD), m_Opc(ISD::SUB), m_Opc(ISD::MUL)))); 296 EXPECT_TRUE(sd_match(Add, m_AllOf(m_Opc(ISD::ADD), m_OneUse()))); 297 EXPECT_TRUE(sd_match(Add, m_NoneOf(m_Opc(ISD::SUB), m_Opc(ISD::MUL)))); 298 } 299 300 TEST_F(SelectionDAGPatternMatchTest, optionalResizing) { 301 SDLoc DL; 302 auto Int32VT = EVT::getIntegerVT(Context, 32); 303 auto Int64VT = EVT::getIntegerVT(Context, 64); 304 305 SDValue Op32 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 306 SDValue Op64 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int64VT); 307 SDValue ZExt = DAG->getNode(ISD::ZERO_EXTEND, DL, Int64VT, Op32); 308 SDValue SExt = DAG->getNode(ISD::SIGN_EXTEND, DL, Int64VT, Op32); 309 SDValue AExt = DAG->getNode(ISD::ANY_EXTEND, DL, Int64VT, Op32); 310 SDValue Trunc = DAG->getNode(ISD::TRUNCATE, DL, Int32VT, Op64); 311 312 using namespace SDPatternMatch; 313 SDValue A; 314 EXPECT_TRUE(sd_match(Op32, m_ZExtOrSelf(m_Value(A)))); 315 EXPECT_TRUE(A == Op32); 316 EXPECT_TRUE(sd_match(ZExt, m_ZExtOrSelf(m_Value(A)))); 317 EXPECT_TRUE(A == Op32); 318 EXPECT_TRUE(sd_match(Op64, m_SExtOrSelf(m_Value(A)))); 319 EXPECT_TRUE(A == Op64); 320 EXPECT_TRUE(sd_match(SExt, m_SExtOrSelf(m_Value(A)))); 321 EXPECT_TRUE(A == Op32); 322 EXPECT_TRUE(sd_match(Op32, m_AExtOrSelf(m_Value(A)))); 323 EXPECT_TRUE(A == Op32); 324 EXPECT_TRUE(sd_match(AExt, m_AExtOrSelf(m_Value(A)))); 325 EXPECT_TRUE(A == Op32); 326 EXPECT_TRUE(sd_match(Op64, m_TruncOrSelf(m_Value(A)))); 327 EXPECT_TRUE(A == Op64); 328 EXPECT_TRUE(sd_match(Trunc, m_TruncOrSelf(m_Value(A)))); 329 EXPECT_TRUE(A == Op64); 330 } 331 332 TEST_F(SelectionDAGPatternMatchTest, matchNode) { 333 SDLoc DL; 334 auto Int32VT = EVT::getIntegerVT(Context, 32); 335 336 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 337 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, Int32VT); 338 339 SDValue Add = DAG->getNode(ISD::ADD, DL, Int32VT, Op0, Op1); 340 341 using namespace SDPatternMatch; 342 EXPECT_TRUE(sd_match(Add, m_Node(ISD::ADD, m_Value(), m_Value()))); 343 EXPECT_FALSE(sd_match(Add, m_Node(ISD::SUB, m_Value(), m_Value()))); 344 EXPECT_FALSE(sd_match(Add, m_Node(ISD::ADD, m_Value()))); 345 EXPECT_FALSE( 346 sd_match(Add, m_Node(ISD::ADD, m_Value(), m_Value(), m_Value()))); 347 EXPECT_FALSE(sd_match(Add, m_Node(ISD::ADD, m_ConstInt(), m_Value()))); 348 } 349 350 namespace { 351 struct VPMatchContext : public SDPatternMatch::BasicMatchContext { 352 using SDPatternMatch::BasicMatchContext::BasicMatchContext; 353 354 bool match(SDValue OpVal, unsigned Opc) const { 355 if (!OpVal->isVPOpcode()) 356 return OpVal->getOpcode() == Opc; 357 358 auto BaseOpc = ISD::getBaseOpcodeForVP(OpVal->getOpcode(), false); 359 return BaseOpc.has_value() && *BaseOpc == Opc; 360 } 361 }; 362 } // anonymous namespace 363 TEST_F(SelectionDAGPatternMatchTest, matchContext) { 364 SDLoc DL; 365 auto BoolVT = EVT::getIntegerVT(Context, 1); 366 auto Int32VT = EVT::getIntegerVT(Context, 32); 367 auto VInt32VT = EVT::getVectorVT(Context, Int32VT, 4); 368 auto MaskVT = EVT::getVectorVT(Context, BoolVT, 4); 369 370 SDValue Scalar0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int32VT); 371 SDValue Vector0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, VInt32VT); 372 SDValue Mask0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 3, MaskVT); 373 374 SDValue VPAdd = DAG->getNode(ISD::VP_ADD, DL, VInt32VT, 375 {Vector0, Vector0, Mask0, Scalar0}); 376 SDValue VPReduceAdd = DAG->getNode(ISD::VP_REDUCE_ADD, DL, Int32VT, 377 {Scalar0, VPAdd, Mask0, Scalar0}); 378 379 using namespace SDPatternMatch; 380 VPMatchContext VPCtx(DAG.get()); 381 EXPECT_TRUE(sd_context_match(VPAdd, VPCtx, m_Opc(ISD::ADD))); 382 // VP_REDUCE_ADD doesn't have a based opcode, so we use a normal 383 // sd_match before switching to VPMatchContext when checking VPAdd. 384 EXPECT_TRUE(sd_match(VPReduceAdd, m_Node(ISD::VP_REDUCE_ADD, m_Value(), 385 m_Context(VPCtx, m_Opc(ISD::ADD)), 386 m_Value(), m_Value()))); 387 } 388 389 TEST_F(SelectionDAGPatternMatchTest, matchAdvancedProperties) { 390 SDLoc DL; 391 auto Int16VT = EVT::getIntegerVT(Context, 16); 392 auto Int64VT = EVT::getIntegerVT(Context, 64); 393 394 SDValue Op0 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 1, Int64VT); 395 SDValue Op1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 2, Int16VT); 396 397 SDValue Add = DAG->getNode(ISD::ADD, DL, Int64VT, Op0, Op0); 398 399 using namespace SDPatternMatch; 400 EXPECT_TRUE(sd_match(Op0, DAG.get(), m_LegalType(m_Value()))); 401 EXPECT_FALSE(sd_match(Op1, DAG.get(), m_LegalType(m_Value()))); 402 EXPECT_TRUE(sd_match(Add, DAG.get(), 403 m_LegalOp(m_IntegerVT(m_Add(m_Value(), m_Value()))))); 404 } 405