| // Copyright 2020 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 <memory> |
| |
| #include "gtest/gtest.h" |
| #include "src/ast/assignment_statement.h" |
| #include "src/ast/block_statement.h" |
| #include "src/ast/float_literal.h" |
| #include "src/ast/identifier_expression.h" |
| #include "src/ast/scalar_constructor_expression.h" |
| #include "src/ast/type/f32_type.h" |
| #include "src/ast/variable_decl_statement.h" |
| #include "src/type_determiner.h" |
| #include "src/writer/spirv/builder.h" |
| #include "src/writer/spirv/spv_dump.h" |
| #include "src/writer/spirv/test_helper.h" |
| |
| namespace tint { |
| namespace writer { |
| namespace spirv { |
| namespace { |
| |
| using BuilderTest = TestHelper; |
| |
| TEST_F(BuilderTest, Block) { |
| ast::type::F32 f32; |
| |
| // Note, this test uses shadow variables which aren't allowed in WGSL but |
| // serves to prove the block code is pushing new scopes as needed. |
| auto* inner = create<ast::BlockStatement>( |
| Source{}, |
| ast::StatementList{ |
| create<ast::VariableDeclStatement>( |
| Source{}, create<ast::Variable>( |
| Source{}, // source |
| "var", // name |
| ast::StorageClass::kFunction, // storage_class |
| &f32, // type |
| false, // is_const |
| nullptr, // constructor |
| ast::VariableDecorationList{})), |
| create<ast::AssignmentStatement>( |
| Source{}, |
| create<ast::IdentifierExpression>( |
| Source{}, mod->RegisterSymbol("var"), "var"), |
| create<ast::ScalarConstructorExpression>( |
| Source{}, create<ast::FloatLiteral>(Source{}, &f32, 2.0f))), |
| }); // decorations |
| ast::BlockStatement outer( |
| Source{}, |
| ast::StatementList{ |
| create<ast::VariableDeclStatement>( |
| Source{}, create<ast::Variable>( |
| Source{}, // source |
| "var", // name |
| ast::StorageClass::kFunction, // storage_class |
| &f32, // type |
| false, // is_const |
| nullptr, // constructor |
| ast::VariableDecorationList{})), // decorations |
| create<ast::AssignmentStatement>( |
| Source{}, |
| create<ast::IdentifierExpression>( |
| Source{}, mod->RegisterSymbol("var"), "var"), |
| create<ast::ScalarConstructorExpression>( |
| Source{}, create<ast::FloatLiteral>(Source{}, &f32, 1.0f))), |
| inner, |
| create<ast::AssignmentStatement>( |
| Source{}, |
| create<ast::IdentifierExpression>( |
| Source{}, mod->RegisterSymbol("var"), "var"), |
| create<ast::ScalarConstructorExpression>( |
| Source{}, create<ast::FloatLiteral>(Source{}, &f32, 3.0f))), |
| }); |
| |
| ASSERT_TRUE(td.DetermineResultType(&outer)) << td.error(); |
| |
| b.push_function(Function{}); |
| ASSERT_FALSE(b.has_error()) << b.error(); |
| |
| EXPECT_TRUE(b.GenerateStatement(&outer)) << b.error(); |
| EXPECT_FALSE(b.has_error()); |
| |
| EXPECT_EQ(DumpInstructions(b.types()), R"(%3 = OpTypeFloat 32 |
| %2 = OpTypePointer Function %3 |
| %4 = OpConstantNull %3 |
| %5 = OpConstant %3 1 |
| %7 = OpConstant %3 2 |
| %8 = OpConstant %3 3 |
| )"); |
| |
| EXPECT_EQ(DumpInstructions(b.functions()[0].variables()), |
| R"(%1 = OpVariable %2 Function %4 |
| %6 = OpVariable %2 Function %4 |
| )"); |
| |
| EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()), R"(OpStore %1 %5 |
| OpStore %6 %7 |
| OpStore %1 %8 |
| )"); |
| } |
| |
| } // namespace |
| } // namespace spirv |
| } // namespace writer |
| } // namespace tint |