| // 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/lang/spirv/writer/common/helper_test.h" |
| |
| using namespace tint::core::number_suffixes; // NOLINT |
| |
| namespace tint::spirv::writer { |
| namespace { |
| |
| TEST_F(SpirvWriterTest, Switch_Basic) { |
| auto* func = b.Function("foo", ty.void_()); |
| b.Append(func->Block(), [&] { |
| auto* swtch = b.Switch(42_i); |
| |
| auto* def_case = b.Case(swtch, Vector{core::ir::Switch::CaseSelector()}); |
| b.Append(def_case, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| b.Return(func); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %8 None |
| OpSwitch %int_42 %5 |
| %5 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_MultipleCases) { |
| auto* func = b.Function("foo", ty.void_()); |
| b.Append(func->Block(), [&] { |
| auto* swtch = b.Switch(42_i); |
| |
| auto* case_a = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}}); |
| b.Append(case_a, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| auto* case_b = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| auto* def_case = b.Case(swtch, Vector{core::ir::Switch::CaseSelector()}); |
| b.Append(def_case, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| b.Return(func); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %int_42 %5 1 %8 2 %9 |
| %8 = OpLabel |
| OpBranch %10 |
| %9 = OpLabel |
| OpBranch %10 |
| %5 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_MultipleSelectorsPerCase) { |
| auto* func = b.Function("foo", ty.void_()); |
| b.Append(func->Block(), [&] { |
| auto* swtch = b.Switch(42_i); |
| |
| auto* case_a = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{b.Constant(3_i)}}); |
| b.Append(case_a, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| auto* case_b = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}, |
| core::ir::Switch::CaseSelector{b.Constant(4_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| auto* def_case = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(5_i)}, |
| core::ir::Switch::CaseSelector()}); |
| b.Append(def_case, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| b.Return(func); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %int_42 %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(SpirvWriterTest, Switch_AllCasesReturn) { |
| auto* func = b.Function("foo", ty.void_()); |
| b.Append(func->Block(), [&] { |
| auto* swtch = b.Switch(42_i); |
| |
| auto* case_a = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}}); |
| b.Append(case_a, [&] { // |
| b.Return(func); |
| }); |
| |
| auto* case_b = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.Return(func); |
| }); |
| |
| auto* def_case = b.Case(swtch, Vector{core::ir::Switch::CaseSelector()}); |
| b.Append(def_case, [&] { // |
| b.Return(func); |
| }); |
| |
| b.Unreachable(); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %int_42 %5 1 %8 2 %9 |
| %8 = OpLabel |
| OpBranch %10 |
| %9 = OpLabel |
| OpBranch %10 |
| %5 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_ConditionalBreak) { |
| auto* func = b.Function("foo", ty.void_()); |
| b.Append(func->Block(), [&] { |
| auto* swtch = b.Switch(42_i); |
| |
| auto* case_a = b.Case(swtch, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}}); |
| b.Append(case_a, [&] { |
| auto* cond_break = b.If(true); |
| b.Append(cond_break->True(), [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| b.Append(cond_break->False(), [&] { // |
| b.ExitIf(cond_break); |
| }); |
| |
| b.Return(func); |
| }); |
| |
| auto* def_case = b.Case(swtch, Vector{core::ir::Switch::CaseSelector()}); |
| b.Append(def_case, [&] { // |
| b.ExitSwitch(swtch); |
| }); |
| |
| b.Return(func); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %int_42 %5 1 %8 |
| %8 = OpLabel |
| OpSelectionMerge %10 None |
| OpBranchConditional %true %11 %10 |
| %11 = OpLabel |
| OpBranch %9 |
| %10 = OpLabel |
| OpBranch %9 |
| %5 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_Phi_SingleValue) { |
| auto* func = b.Function("foo", ty.i32()); |
| b.Append(func->Block(), [&] { |
| auto* s = b.Switch(42_i); |
| s->SetResults(b.InstructionResult(ty.i32())); |
| auto* case_a = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_a, [&] { // |
| b.ExitSwitch(s, 10_i); |
| }); |
| |
| auto* case_b = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(s, 20_i); |
| }); |
| |
| b.Return(func, s); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %8 None |
| OpSwitch %int_42 %5 1 %5 2 %7 |
| %5 = OpLabel |
| OpBranch %8 |
| %7 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| %9 = OpPhi %int %int_10 %5 %int_20 %7 |
| OpReturnValue %9 |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_Phi_SingleValue_CaseReturn) { |
| auto* func = b.Function("foo", ty.i32()); |
| b.Append(func->Block(), [&] { |
| auto* s = b.Switch(42_i); |
| s->SetResults(b.InstructionResult(ty.i32())); |
| auto* case_a = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_a, [&] { // |
| b.Return(func, 10_i); |
| }); |
| |
| auto* case_b = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(s, 20_i); |
| }); |
| |
| b.Return(func, s); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| %return_value = OpVariable %_ptr_Function_int Function %7 |
| %continue_execution = OpVariable %_ptr_Function_bool Function |
| OpStore %continue_execution %true |
| OpSelectionMerge %15 None |
| OpSwitch %int_42 %12 1 %12 2 %14 |
| %12 = OpLabel |
| OpStore %continue_execution %false |
| OpStore %return_value %int_10 |
| OpBranch %15 |
| %14 = OpLabel |
| OpBranch %15 |
| %15 = OpLabel |
| %18 = OpPhi %int %19 %12 %int_20 %14 |
| %21 = OpLoad %bool %continue_execution |
| OpSelectionMerge %22 None |
| OpBranchConditional %21 %23 %22 |
| %23 = OpLabel |
| OpStore %return_value %18 |
| OpBranch %22 |
| %22 = OpLabel |
| %24 = OpLoad %int %return_value |
| OpReturnValue %24 |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_Phi_MultipleValue_0) { |
| auto* func = b.Function("foo", ty.i32()); |
| b.Append(func->Block(), [&] { |
| auto* s = b.Switch(42_i); |
| s->SetResults(b.InstructionResult(ty.i32()), b.InstructionResult(ty.bool_())); |
| auto* case_a = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_a, [&] { // |
| b.ExitSwitch(s, 10_i, true); |
| }); |
| |
| auto* case_b = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(s, 20_i, false); |
| }); |
| |
| b.Return(func, s->Result(0)); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %8 None |
| OpSwitch %int_42 %5 1 %5 2 %7 |
| %5 = OpLabel |
| OpBranch %8 |
| %7 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| %9 = OpPhi %int %int_10 %5 %int_20 %7 |
| %13 = OpPhi %bool %true %5 %false %7 |
| OpReturnValue %9 |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_Phi_MultipleValue_1) { |
| auto* func = b.Function("foo", ty.bool_()); |
| b.Append(func->Block(), [&] { |
| auto* s = b.Switch(b.Constant(42_i)); |
| s->SetResults(b.InstructionResult(ty.i32()), b.InstructionResult(ty.bool_())); |
| auto* case_a = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_a, [&] { // |
| b.ExitSwitch(s, 10_i, true); |
| }); |
| |
| auto* case_b = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(s, 20_i, false); |
| }); |
| |
| b.Return(func, s->Result(1)); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %9 None |
| OpSwitch %int_42 %5 1 %5 2 %8 |
| %5 = OpLabel |
| OpBranch %9 |
| %8 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| %10 = OpPhi %int %int_10 %5 %int_20 %8 |
| %13 = OpPhi %bool %true %5 %false %8 |
| OpReturnValue %13 |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_Phi_NestedIf) { |
| auto* func = b.Function("foo", ty.i32()); |
| b.Append(func->Block(), [&] { |
| auto* s = b.Switch(42_i); |
| s->SetResults(b.InstructionResult(ty.i32())); |
| auto* case_a = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_a, [&] { // |
| auto* inner = b.If(true); |
| inner->SetResults(b.InstructionResult(ty.i32())); |
| b.Append(inner->True(), [&] { // |
| b.ExitIf(inner, 10_i); |
| }); |
| b.Append(inner->False(), [&] { // |
| b.ExitIf(inner, 20_i); |
| }); |
| |
| b.ExitSwitch(s, inner->Result()); |
| }); |
| |
| auto* case_b = b.Case(s, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(s, 20_i); |
| }); |
| |
| b.Return(func, s); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %8 None |
| OpSwitch %int_42 %5 1 %5 2 %7 |
| %5 = OpLabel |
| OpSelectionMerge %9 None |
| OpBranchConditional %true %10 %11 |
| %10 = OpLabel |
| OpBranch %9 |
| %11 = OpLabel |
| OpBranch %9 |
| %9 = OpLabel |
| %14 = OpPhi %int %int_10 %10 %int_20 %11 |
| OpBranch %8 |
| %7 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| %17 = OpPhi %int %int_20 %7 %14 %9 |
| OpReturnValue %17 |
| OpFunctionEnd |
| )"); |
| } |
| |
| TEST_F(SpirvWriterTest, Switch_Phi_NestedSwitch) { |
| auto* func = b.Function("foo", ty.i32()); |
| b.Append(func->Block(), [&] { |
| auto* outer = b.Switch(42_i); |
| outer->SetResults(b.InstructionResult(ty.i32())); |
| auto* case_a = b.Case(outer, Vector{core::ir::Switch::CaseSelector{b.Constant(1_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_a, [&] { // |
| auto* inner = b.Switch(42_i); |
| auto* case_inner = b.Case(inner, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}, |
| core::ir::Switch::CaseSelector{nullptr}}); |
| b.Append(case_inner, [&] { // |
| b.ExitSwitch(inner); |
| }); |
| |
| b.ExitSwitch(outer, 10_i); |
| }); |
| |
| auto* case_b = b.Case(outer, Vector{core::ir::Switch::CaseSelector{b.Constant(2_i)}}); |
| b.Append(case_b, [&] { // |
| b.ExitSwitch(outer, 20_i); |
| }); |
| |
| b.Return(func, outer); |
| }); |
| |
| ASSERT_TRUE(Generate()) << Error() << output_; |
| EXPECT_INST(R"( |
| %4 = OpLabel |
| OpSelectionMerge %8 None |
| OpSwitch %int_42 %5 1 %5 2 %7 |
| %5 = OpLabel |
| OpSelectionMerge %10 None |
| OpSwitch %int_42 %9 2 %9 |
| %9 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| OpBranch %8 |
| %7 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| %11 = OpPhi %int %int_20 %7 %int_10 %10 |
| OpReturnValue %11 |
| OpFunctionEnd |
| )"); |
| } |
| |
| } // namespace |
| } // namespace tint::spirv::writer |
