| // Copyright 2023 The Tint Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "src/tint/writer/spirv/ir/test_helper_ir.h" |
| |
| using namespace tint::number_suffixes; // NOLINT |
| |
| namespace tint::writer::spirv { |
| namespace { |
| |
| TEST_F(SpvGeneratorImplTest, Switch_Basic) { |
| auto* func = b.CreateFunction("foo", mod.Types().void_()); |
| |
| auto* swtch = b.CreateSwitch(b.Constant(42_i)); |
| |
| auto* def_case = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector()}); |
| def_case->AddInstruction(b.ExitSwitch(swtch)); |
| |
| swtch->Merge()->AddInstruction(b.Return(func)); |
| |
| func->StartTarget()->AddInstruction(swtch); |
| |
| generator_.EmitFunction(func); |
| EXPECT_EQ(DumpModule(generator_.Module()), R"(OpName %1 "foo" |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %7 = OpTypeInt 32 1 |
| %6 = OpConstant %7 42 |
| %1 = OpFunction %2 None %3 |
| %4 = OpLabel |
| OpSelectionMerge %8 None |
| OpSwitch %6 %5 |
| %5 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpvGeneratorImplTest, Switch_MultipleCases) { |
| auto* func = b.CreateFunction("foo", mod.Types().void_()); |
| |
| auto* swtch = b.CreateSwitch(b.Constant(42_i)); |
| |
| auto* case_a = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(1_i)}}); |
| case_a->AddInstruction(b.ExitSwitch(swtch)); |
| |
| auto* case_b = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| case_b->AddInstruction(b.ExitSwitch(swtch)); |
| |
| auto* def_case = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector()}); |
| def_case->AddInstruction(b.ExitSwitch(swtch)); |
| |
| swtch->Merge()->AddInstruction(b.Return(func)); |
| |
| func->StartTarget()->AddInstruction(swtch); |
| |
| generator_.EmitFunction(func); |
| EXPECT_EQ(DumpModule(generator_.Module()), R"(OpName %1 "foo" |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %7 = OpTypeInt 32 1 |
| %6 = OpConstant %7 42 |
| %1 = OpFunction %2 None %3 |
| %4 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %6 %5 1 %8 2 %9 |
| %8 = OpLabel |
| OpBranch %10 |
| %9 = OpLabel |
| OpBranch %10 |
| %5 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpvGeneratorImplTest, Switch_MultipleSelectorsPerCase) { |
| auto* func = b.CreateFunction("foo", mod.Types().void_()); |
| |
| auto* swtch = b.CreateSwitch(b.Constant(42_i)); |
| |
| auto* case_a = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(1_i)}, |
| ir::Switch::CaseSelector{b.Constant(3_i)}}); |
| case_a->AddInstruction(b.ExitSwitch(swtch)); |
| |
| auto* case_b = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(2_i)}, |
| ir::Switch::CaseSelector{b.Constant(4_i)}}); |
| case_b->AddInstruction(b.ExitSwitch(swtch)); |
| |
| auto* def_case = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(5_i)}, |
| ir::Switch::CaseSelector()}); |
| def_case->AddInstruction(b.ExitSwitch(swtch)); |
| |
| swtch->Merge()->AddInstruction(b.Return(func)); |
| |
| func->StartTarget()->AddInstruction(swtch); |
| |
| generator_.EmitFunction(func); |
| EXPECT_EQ(DumpModule(generator_.Module()), R"(OpName %1 "foo" |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %7 = OpTypeInt 32 1 |
| %6 = OpConstant %7 42 |
| %1 = OpFunction %2 None %3 |
| %4 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %6 %5 1 %8 3 %8 2 %9 4 %9 5 %5 |
| %8 = OpLabel |
| OpBranch %10 |
| %9 = OpLabel |
| OpBranch %10 |
| %5 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpvGeneratorImplTest, Switch_AllCasesReturn) { |
| auto* func = b.CreateFunction("foo", mod.Types().void_()); |
| |
| auto* swtch = b.CreateSwitch(b.Constant(42_i)); |
| |
| auto* case_a = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(1_i)}}); |
| case_a->AddInstruction(b.Return(func)); |
| |
| auto* case_b = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| case_b->AddInstruction(b.Return(func)); |
| |
| auto* def_case = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector()}); |
| def_case->AddInstruction(b.Return(func)); |
| |
| func->StartTarget()->AddInstruction(swtch); |
| |
| generator_.EmitFunction(func); |
| EXPECT_EQ(DumpModule(generator_.Module()), R"(OpName %1 "foo" |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %7 = OpTypeInt 32 1 |
| %6 = OpConstant %7 42 |
| %1 = OpFunction %2 None %3 |
| %4 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %6 %5 1 %8 2 %9 |
| %8 = OpLabel |
| OpReturn |
| %9 = OpLabel |
| OpReturn |
| %5 = OpLabel |
| OpReturn |
| %10 = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpvGeneratorImplTest, Switch_ConditionalBreak) { |
| auto* func = b.CreateFunction("foo", mod.Types().void_()); |
| |
| auto* swtch = b.CreateSwitch(b.Constant(42_i)); |
| |
| auto* cond_break = b.CreateIf(b.Constant(true)); |
| cond_break->True()->AddInstruction(b.ExitSwitch(swtch)); |
| cond_break->False()->AddInstruction(b.ExitIf(cond_break)); |
| cond_break->Merge()->AddInstruction(b.Return(func)); |
| |
| auto* case_a = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector{b.Constant(1_i)}}); |
| case_a->AddInstruction(cond_break); |
| |
| auto* def_case = b.CreateCase(swtch, utils::Vector{ir::Switch::CaseSelector()}); |
| def_case->AddInstruction(b.ExitSwitch(swtch)); |
| |
| swtch->Merge()->AddInstruction(b.Return(func)); |
| |
| func->StartTarget()->AddInstruction(swtch); |
| |
| generator_.EmitFunction(func); |
| EXPECT_EQ(DumpModule(generator_.Module()), R"(OpName %1 "foo" |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %7 = OpTypeInt 32 1 |
| %6 = OpConstant %7 42 |
| %13 = OpTypeBool |
| %12 = OpConstantTrue %13 |
| %1 = OpFunction %2 None %3 |
| %4 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %6 %5 1 %8 |
| %8 = OpLabel |
| OpSelectionMerge %10 None |
| OpBranchConditional %12 %11 %10 |
| %11 = OpLabel |
| OpBranch %9 |
| %10 = OpLabel |
| OpReturn |
| %5 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| } // namespace |
| } // namespace tint::writer::spirv |