unittests/CodeGen/GlobalISel/MachineIRBuilderTest.cpp

   1 //===- MachineIRBuilderTest.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 "GISelMITest.h"
  10 #include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
  11
  12 TEST_F(GISelMITest, TestBuildConstantFConstant) {
  13   setUp();
  14   if (!TM)
  15     return;
  16
  17   B.buildConstant(LLT::scalar(32), 42);
  18   B.buildFConstant(LLT::scalar(32), 1.0);
  19
  20   B.buildConstant(LLT::vector(2, 32), 99);
  21   B.buildFConstant(LLT::vector(2, 32), 2.0);
  22
  23   // Test APFloat overload.
  24   APFloat KVal(APFloat::IEEEdouble(), "4.0");
  25   B.buildFConstant(LLT::scalar(64), KVal);
  26
  27   auto CheckStr = R"(
  28   CHECK: [[CONST0:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
  29   CHECK: [[FCONST0:%[0-9]+]]:_(s32) = G_FCONSTANT float 1.000000e+00
  30   CHECK: [[CONST1:%[0-9]+]]:_(s32) = G_CONSTANT i32 99
  31   CHECK: [[VEC0:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[CONST1]]:_(s32), [[CONST1]]:_(s32)
  32   CHECK: [[FCONST1:%[0-9]+]]:_(s32) = G_FCONSTANT float 2.000000e+00
  33   CHECK: [[VEC1:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[FCONST1]]:_(s32), [[FCONST1]]:_(s32)
  34   CHECK: [[FCONST2:%[0-9]+]]:_(s64) = G_FCONSTANT double 4.000000e+00
  35   )";
  36
  37   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
  38 }
  39
  40
  41 #ifdef GTEST_HAS_DEATH_TEST
  42 #ifndef NDEBUG
  43
  44 TEST_F(GISelMITest, TestBuildConstantFConstantDeath) {
  45   setUp();
  46   if (!TM)
  47     return;
  48
  49   LLVMContext &Ctx = MF->getFunction().getContext();
  50   APInt APV32(32, 12345);
  51
  52   // Test APInt version breaks
  53   EXPECT_DEATH(B.buildConstant(LLT::scalar(16), APV32),
  54                "creating constant with the wrong size");
  55   EXPECT_DEATH(B.buildConstant(LLT::vector(2, 16), APV32),
  56                "creating constant with the wrong size");
  57
  58   // Test ConstantInt version breaks
  59   ConstantInt *CI = ConstantInt::get(Ctx, APV32);
  60   EXPECT_DEATH(B.buildConstant(LLT::scalar(16), *CI),
  61                "creating constant with the wrong size");
  62   EXPECT_DEATH(B.buildConstant(LLT::vector(2, 16), *CI),
  63                "creating constant with the wrong size");
  64
  65   APFloat DoubleVal(APFloat::IEEEdouble());
  66   ConstantFP *CF = ConstantFP::get(Ctx, DoubleVal);
  67   EXPECT_DEATH(B.buildFConstant(LLT::scalar(16), *CF),
  68                "creating fconstant with the wrong size");
  69   EXPECT_DEATH(B.buildFConstant(LLT::vector(2, 16), *CF),
  70                "creating fconstant with the wrong size");
  71 }
  72
  73 #endif
  74 #endif
  75
  76 TEST_F(GISelMITest, DstOpSrcOp) {
  77   if (!TM)
  78     return;
  79
  80   SmallVector<Register, 4> Copies;
  81   collectCopies(Copies, MF);
  82
  83   LLT s64 = LLT::scalar(64);
  84   auto MIBAdd = B.buildAdd(s64, Copies[0], Copies[1]);
  85
  86   // Test SrcOp and DstOp can be constructed directly from MachineOperand by
  87   // copying the instruction
  88   B.buildAdd(MIBAdd->getOperand(0), MIBAdd->getOperand(1), MIBAdd->getOperand(2));
  89
  90
  91   auto CheckStr = R"(
  92   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
  93   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
  94   ; CHECK: [[ADD:%[0-9]+]]:_(s64) = G_ADD [[COPY0]]:_, [[COPY1]]:_
  95   ; CHECK: [[ADD]]:_(s64) = G_ADD [[COPY0]]:_, [[COPY1]]:_
  96   )";
  97
  98   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
  99 }
 100
 101 TEST_F(GISelMITest, BuildUnmerge) {
 102   if (!TM)
 103     return;
 104
 105   SmallVector<Register, 4> Copies;
 106   collectCopies(Copies, MF);
 107   B.buildUnmerge(LLT::scalar(32), Copies[0]);
 108   B.buildUnmerge(LLT::scalar(16), Copies[1]);
 109
 110   auto CheckStr = R"(
 111   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 112   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 113   ; CHECK: [[UNMERGE32_0:%[0-9]+]]:_(s32), [[UNMERGE32_1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY0]]
 114   ; CHECK: [[UNMERGE16_0:%[0-9]+]]:_(s16), [[UNMERGE16_1:%[0-9]+]]:_(s16), [[UNMERGE16_2:%[0-9]+]]:_(s16), [[UNMERGE16_3:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[COPY1]]
 115
 116   )";
 117
 118   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 119 }
 120
 121 TEST_F(GISelMITest, TestBuildFPInsts) {
 122   if (!TM)
 123     return;
 124
 125   SmallVector<Register, 4> Copies;
 126   collectCopies(Copies, MF);
 127
 128   LLT S64 = LLT::scalar(64);
 129
 130   B.buildFAdd(S64, Copies[0], Copies[1]);
 131   B.buildFSub(S64, Copies[0], Copies[1]);
 132   B.buildFMA(S64, Copies[0], Copies[1], Copies[2]);
 133   B.buildFMAD(S64, Copies[0], Copies[1], Copies[2]);
 134   B.buildFMAD(S64, Copies[0], Copies[1], Copies[2], MachineInstr::FmNoNans);
 135   B.buildFNeg(S64, Copies[0]);
 136   B.buildFAbs(S64, Copies[0]);
 137   B.buildFCopysign(S64, Copies[0], Copies[1]);
 138
 139   auto CheckStr = R"(
 140   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 141   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 142   ; CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY $x2
 143   ; CHECK: [[FADD:%[0-9]+]]:_(s64) = G_FADD [[COPY0]]:_, [[COPY1]]:_
 144   ; CHECK: [[FSUB:%[0-9]+]]:_(s64) = G_FSUB [[COPY0]]:_, [[COPY1]]:_
 145   ; CHECK: [[FMA:%[0-9]+]]:_(s64) = G_FMA [[COPY0]]:_, [[COPY1]]:_, [[COPY2]]:_
 146   ; CHECK: [[FMAD0:%[0-9]+]]:_(s64) = G_FMAD [[COPY0]]:_, [[COPY1]]:_, [[COPY2]]:_
 147   ; CHECK: [[FMAD1:%[0-9]+]]:_(s64) = nnan G_FMAD [[COPY0]]:_, [[COPY1]]:_, [[COPY2]]:_
 148   ; CHECK: [[FNEG:%[0-9]+]]:_(s64) = G_FNEG [[COPY0]]:_
 149   ; CHECK: [[FABS:%[0-9]+]]:_(s64) = G_FABS [[COPY0]]:_
 150   ; CHECK: [[FCOPYSIGN:%[0-9]+]]:_(s64) = G_FCOPYSIGN [[COPY0]]:_, [[COPY1]]:_
 151   )";
 152
 153   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 154 }
 155
 156 TEST_F(GISelMITest, BuildIntrinsic) {
 157   if (!TM)
 158     return;
 159
 160   LLT S64 = LLT::scalar(64);
 161   SmallVector<Register, 4> Copies;
 162   collectCopies(Copies, MF);
 163
 164   // Make sure DstOp version works. sqrt is just a placeholder intrinsic.
 165   B.buildIntrinsic(Intrinsic::sqrt, {S64}, false)
 166     .addUse(Copies[0]);
 167
 168   // Make sure register version works
 169   SmallVector<Register, 1> Results;
 170   Results.push_back(MRI->createGenericVirtualRegister(S64));
 171   B.buildIntrinsic(Intrinsic::sqrt, Results, false)
 172     .addUse(Copies[1]);
 173
 174   auto CheckStr = R"(
 175   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 176   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 177   ; CHECK: [[SQRT0:%[0-9]+]]:_(s64) = G_INTRINSIC intrinsic(@llvm.sqrt), [[COPY0]]:_
 178   ; CHECK: [[SQRT1:%[0-9]+]]:_(s64) = G_INTRINSIC intrinsic(@llvm.sqrt), [[COPY1]]:_
 179   )";
 180
 181   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 182 }
 183
 184 TEST_F(GISelMITest, BuildXor) {
 185   if (!TM)
 186     return;
 187
 188   LLT S64 = LLT::scalar(64);
 189   LLT S128 = LLT::scalar(128);
 190   SmallVector<Register, 4> Copies;
 191   collectCopies(Copies, MF);
 192   B.buildXor(S64, Copies[0], Copies[1]);
 193   B.buildNot(S64, Copies[0]);
 194
 195   // Make sure this works with > 64-bit types
 196   auto Merge = B.buildMerge(S128, {Copies[0], Copies[1]});
 197   B.buildNot(S128, Merge);
 198   auto CheckStr = R"(
 199   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 200   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 201   ; CHECK: [[XOR0:%[0-9]+]]:_(s64) = G_XOR [[COPY0]]:_, [[COPY1]]:_
 202   ; CHECK: [[NEGONE64:%[0-9]+]]:_(s64) = G_CONSTANT i64 -1
 203   ; CHECK: [[XOR1:%[0-9]+]]:_(s64) = G_XOR [[COPY0]]:_, [[NEGONE64]]:_
 204   ; CHECK: [[MERGE:%[0-9]+]]:_(s128) = G_MERGE_VALUES [[COPY0]]:_(s64), [[COPY1]]:_(s64)
 205   ; CHECK: [[NEGONE128:%[0-9]+]]:_(s128) = G_CONSTANT i128 -1
 206   ; CHECK: [[XOR2:%[0-9]+]]:_(s128) = G_XOR [[MERGE]]:_, [[NEGONE128]]:_
 207   )";
 208
 209   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 210 }
 211
 212 TEST_F(GISelMITest, BuildBitCounts) {
 213   if (!TM)
 214     return;
 215
 216   LLT S32 = LLT::scalar(32);
 217   SmallVector<Register, 4> Copies;
 218   collectCopies(Copies, MF);
 219
 220   B.buildCTPOP(S32, Copies[0]);
 221   B.buildCTLZ(S32, Copies[0]);
 222   B.buildCTLZ_ZERO_UNDEF(S32, Copies[1]);
 223   B.buildCTTZ(S32, Copies[0]);
 224   B.buildCTTZ_ZERO_UNDEF(S32, Copies[1]);
 225
 226   auto CheckStr = R"(
 227   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 228   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 229   ; CHECK: [[CTPOP:%[0-9]+]]:_(s32) = G_CTPOP [[COPY0]]:_
 230   ; CHECK: [[CTLZ0:%[0-9]+]]:_(s32) = G_CTLZ [[COPY0]]:_
 231   ; CHECK: [[CTLZ_UNDEF0:%[0-9]+]]:_(s32) = G_CTLZ_ZERO_UNDEF [[COPY1]]:_
 232   ; CHECK: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[COPY0]]:_
 233   ; CHECK: [[CTTZ_UNDEF0:%[0-9]+]]:_(s32) = G_CTTZ_ZERO_UNDEF [[COPY1]]:_
 234   )";
 235
 236   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 237 }
 238
 239 TEST_F(GISelMITest, BuildCasts) {
 240   if (!TM)
 241     return;
 242
 243   LLT S32 = LLT::scalar(32);
 244   SmallVector<Register, 4> Copies;
 245   collectCopies(Copies, MF);
 246
 247   B.buildUITOFP(S32, Copies[0]);
 248   B.buildSITOFP(S32, Copies[0]);
 249   B.buildFPTOUI(S32, Copies[0]);
 250   B.buildFPTOSI(S32, Copies[0]);
 251
 252   auto CheckStr = R"(
 253   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 254   ; CHECK: [[UITOFP:%[0-9]+]]:_(s32) = G_UITOFP [[COPY0]]:_
 255   ; CHECK: [[SITOFP:%[0-9]+]]:_(s32) = G_SITOFP [[COPY0]]:_
 256   ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[COPY0]]:_
 257   ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[COPY0]]:_
 258   )";
 259
 260   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 261 }
 262
 263 TEST_F(GISelMITest, BuildMinMax) {
 264   if (!TM)
 265     return;
 266
 267   LLT S64 = LLT::scalar(64);
 268   SmallVector<Register, 4> Copies;
 269   collectCopies(Copies, MF);
 270
 271   B.buildSMin(S64, Copies[0], Copies[1]);
 272   B.buildSMax(S64, Copies[0], Copies[1]);
 273   B.buildUMin(S64, Copies[0], Copies[1]);
 274   B.buildUMax(S64, Copies[0], Copies[1]);
 275
 276   auto CheckStr = R"(
 277   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 278   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 279   ; CHECK: [[SMIN0:%[0-9]+]]:_(s64) = G_SMIN [[COPY0]]:_, [[COPY1]]:_
 280   ; CHECK: [[SMAX0:%[0-9]+]]:_(s64) = G_SMAX [[COPY0]]:_, [[COPY1]]:_
 281   ; CHECK: [[UMIN0:%[0-9]+]]:_(s64) = G_UMIN [[COPY0]]:_, [[COPY1]]:_
 282   ; CHECK: [[UMAX0:%[0-9]+]]:_(s64) = G_UMAX [[COPY0]]:_, [[COPY1]]:_
 283   )";
 284
 285   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 286 }
 287
 288 TEST_F(GISelMITest, BuildAtomicRMW) {
 289   if (!TM)
 290     return;
 291
 292   LLT S64 = LLT::scalar(64);
 293   LLT P0 = LLT::pointer(0, 64);
 294   SmallVector<Register, 4> Copies;
 295   collectCopies(Copies, MF);
 296
 297   MachineMemOperand *MMO =
 298     MF->getMachineMemOperand(
 299       MachinePointerInfo(),
 300       MachineMemOperand::MOLoad | MachineMemOperand::MOStore,
 301       8, 8, AAMDNodes(), nullptr, SyncScope::System, AtomicOrdering::Unordered);
 302
 303   auto Ptr = B.buildUndef(P0);
 304   B.buildAtomicRMWFAdd(S64, Ptr, Copies[0], *MMO);
 305   B.buildAtomicRMWFSub(S64, Ptr, Copies[0], *MMO);
 306
 307   auto CheckStr = R"(
 308   ; CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY $x0
 309   ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY $x1
 310   ; CHECK: [[PTR:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
 311   ; CHECK: [[FADD:%[0-9]+]]:_(s64) = G_ATOMICRMW_FADD [[PTR]]:_(p0), [[COPY0]]:_ :: (load store unordered 8)
 312   ; CHECK: [[FSUB:%[0-9]+]]:_(s64) = G_ATOMICRMW_FSUB [[PTR]]:_(p0), [[COPY0]]:_ :: (load store unordered 8)
 313   )";
 314
 315   EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
 316 }