dawn-cmake/src/writer/spirv/builder_function_test.cc

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// 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 <string>
#include "gtest/gtest.h"
#include "spirv/unified1/spirv.h"
#include "spirv/unified1/spirv.hpp11"
#include "src/ast/decorated_variable.h"
#include "src/ast/discard_statement.h"
#include "src/ast/function.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/member_accessor_expression.h"
#include "src/ast/return_statement.h"
#include "src/ast/stage_decoration.h"
#include "src/ast/struct.h"
#include "src/ast/struct_block_decoration.h"
#include "src/ast/struct_member_offset_decoration.h"
#include "src/ast/type/access_control_type.h"
#include "src/ast/type/f32_type.h"
#include "src/ast/type/i32_type.h"
#include "src/ast/type/struct_type.h"
#include "src/ast/type/void_type.h"
#include "src/ast/variable.h"
#include "src/ast/variable_decl_statement.h"
#include "src/context.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, Function_Empty) {
ast::type::VoidType void_type;
ast::Function func("a_func", {}, &void_type, create<ast::BlockStatement>());
ASSERT_TRUE(b.GenerateFunction(&func));
EXPECT_EQ(DumpBuilder(b), R"(OpName %3 "tint_615f66756e63"
%2 = OpTypeVoid
%1 = OpTypeFunction %2
%3 = OpFunction %2 None %1
%4 = OpLabel
OpReturn
OpFunctionEnd
)");
}
TEST_F(BuilderTest, Function_Terminator_Return) {
ast::type::VoidType void_type;
auto* body = create<ast::BlockStatement>();
body->append(create<ast::ReturnStatement>());
ast::Function func("a_func", {}, &void_type, body);
ASSERT_TRUE(b.GenerateFunction(&func));
EXPECT_EQ(DumpBuilder(b), R"(OpName %3 "tint_615f66756e63"
%2 = OpTypeVoid
%1 = OpTypeFunction %2
%3 = OpFunction %2 None %1
%4 = OpLabel
OpReturn
OpFunctionEnd
)");
}
TEST_F(BuilderTest, Function_Terminator_ReturnValue) {
ast::type::VoidType void_type;
ast::type::F32Type f32;
auto* var_a = create<ast::Variable>("a", ast::StorageClass::kPrivate, &f32);
td.RegisterVariableForTesting(var_a);
auto* body = create<ast::BlockStatement>();
body->append(
create<ast::ReturnStatement>(create<ast::IdentifierExpression>("a")));
ASSERT_TRUE(td.DetermineResultType(body)) << td.error();
ast::Function func("a_func", {}, &void_type, body);
ASSERT_TRUE(b.GenerateGlobalVariable(var_a)) << b.error();
ASSERT_TRUE(b.GenerateFunction(&func)) << b.error();
EXPECT_EQ(DumpBuilder(b), R"(OpName %1 "tint_61"
OpName %7 "tint_615f66756e63"
%3 = OpTypeFloat 32
%2 = OpTypePointer Private %3
%4 = OpConstantNull %3
%1 = OpVariable %2 Private %4
%6 = OpTypeVoid
%5 = OpTypeFunction %6
%7 = OpFunction %6 None %5
%8 = OpLabel
%9 = OpLoad %3 %1
OpReturnValue %9
OpFunctionEnd
)");
}
TEST_F(BuilderTest, Function_Terminator_Discard) {
ast::type::VoidType void_type;
auto* body = create<ast::BlockStatement>();
body->append(create<ast::DiscardStatement>());
ast::Function func("a_func", {}, &void_type, body);
ASSERT_TRUE(b.GenerateFunction(&func));
EXPECT_EQ(DumpBuilder(b), R"(OpName %3 "tint_615f66756e63"
%2 = OpTypeVoid
%1 = OpTypeFunction %2
%3 = OpFunction %2 None %1
%4 = OpLabel
OpKill
OpFunctionEnd
)");
}
TEST_F(BuilderTest, Function_WithParams) {
ast::type::VoidType void_type;
ast::type::F32Type f32;
ast::type::I32Type i32;
ast::VariableList params;
auto* var_a = create<ast::Variable>("a", ast::StorageClass::kFunction, &f32);
var_a->set_is_const(true);
params.push_back(var_a);
auto* var_b = create<ast::Variable>("b", ast::StorageClass::kFunction, &i32);
var_b->set_is_const(true);
params.push_back(var_b);
auto* body = create<ast::BlockStatement>();
body->append(
create<ast::ReturnStatement>(create<ast::IdentifierExpression>("a")));
ast::Function func("a_func", params, &f32, body);
td.RegisterVariableForTesting(func.params()[0]);
td.RegisterVariableForTesting(func.params()[1]);
EXPECT_TRUE(td.DetermineFunction(&func));
ASSERT_TRUE(b.GenerateFunction(&func));
EXPECT_EQ(DumpBuilder(b), R"(OpName %4 "tint_615f66756e63"
OpName %5 "tint_61"
OpName %6 "tint_62"
%2 = OpTypeFloat 32
%3 = OpTypeInt 32 1
%1 = OpTypeFunction %2 %2 %3
%4 = OpFunction %2 None %1
%5 = OpFunctionParameter %2
%6 = OpFunctionParameter %3
%7 = OpLabel
OpReturnValue %5
OpFunctionEnd
)") << DumpBuilder(b);
}
TEST_F(BuilderTest, Function_WithBody) {
ast::type::VoidType void_type;
auto* body = create<ast::BlockStatement>();
body->append(create<ast::ReturnStatement>());
ast::Function func("a_func", {}, &void_type, body);
ASSERT_TRUE(b.GenerateFunction(&func));
EXPECT_EQ(DumpBuilder(b), R"(OpName %3 "tint_615f66756e63"
%2 = OpTypeVoid
%1 = OpTypeFunction %2
%3 = OpFunction %2 None %1
%4 = OpLabel
OpReturn
OpFunctionEnd
)");
}
TEST_F(BuilderTest, FunctionType) {
ast::type::VoidType void_type;
ast::Function func("a_func", {}, &void_type, create<ast::BlockStatement>());
ASSERT_TRUE(b.GenerateFunction(&func));
EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeVoid
%1 = OpTypeFunction %2
)");
}
TEST_F(BuilderTest, FunctionType_DeDuplicate) {
ast::type::VoidType void_type;
ast::Function func1("a_func", {}, &void_type, create<ast::BlockStatement>());
ast::Function func2("b_func", {}, &void_type, create<ast::BlockStatement>());
ASSERT_TRUE(b.GenerateFunction(&func1));
ASSERT_TRUE(b.GenerateFunction(&func2));
EXPECT_EQ(DumpInstructions(b.types()), R"(%2 = OpTypeVoid
%1 = OpTypeFunction %2
)");
}
// https://crbug.com/tint/297
TEST_F(BuilderTest, Emit_Multiple_EntryPoint_With_Same_ModuleVar) {
// [[block]] struct Data {
// [[offset(0)]] d : f32;
// };
// [[binding(0), set(0)]] var<storage_buffer> data : Data;
//
// [[stage(compute)]]
// fn a() -> void {
// return;
// }
//
// [[stage(compute)]]
// fn b() -> void {
// return;
// }
ast::type::VoidType void_type;
ast::type::F32Type f32;
ast::StructMemberList members;
ast::StructMemberDecorationList a_deco;
a_deco.push_back(create<ast::StructMemberOffsetDecoration>(0, Source{}));
members.push_back(create<ast::StructMember>("d", &f32, a_deco));
ast::StructDecorationList s_decos;
s_decos.push_back(create<ast::StructBlockDecoration>(Source{}));
auto* str = create<ast::Struct>(s_decos, members);
ast::type::StructType s("Data", str);
ast::type::AccessControlType ac(ast::AccessControl::kReadWrite, &s);
auto* data_var = create<ast::DecoratedVariable>(
create<ast::Variable>("data", ast::StorageClass::kStorageBuffer, &ac));
ast::VariableDecorationList decos;
decos.push_back(create<ast::BindingDecoration>(0, Source{}));
decos.push_back(create<ast::SetDecoration>(0, Source{}));
data_var->set_decorations(decos);
mod->AddConstructedType(&s);
td.RegisterVariableForTesting(data_var);
mod->AddGlobalVariable(data_var);
{
ast::VariableList params;
auto* var = create<ast::Variable>("v", ast::StorageClass::kFunction, &f32);
var->set_constructor(create<ast::MemberAccessorExpression>(
create<ast::IdentifierExpression>("data"),
create<ast::IdentifierExpression>("d")));
auto* body = create<ast::BlockStatement>();
body->append(create<ast::VariableDeclStatement>(var));
body->append(create<ast::ReturnStatement>());
auto* func = create<ast::Function>("a", params, &void_type, body);
func->add_decoration(
create<ast::StageDecoration>(ast::PipelineStage::kCompute, Source{}));
mod->AddFunction(func);
}
{
ast::VariableList params;
auto* var = create<ast::Variable>("v", ast::StorageClass::kFunction, &f32);
var->set_constructor(create<ast::MemberAccessorExpression>(
create<ast::IdentifierExpression>("data"),
create<ast::IdentifierExpression>("d")));
auto* body = create<ast::BlockStatement>();
body->append(create<ast::VariableDeclStatement>(var));
body->append(create<ast::ReturnStatement>());
auto* func = create<ast::Function>("b", params, &void_type, body);
func->add_decoration(
create<ast::StageDecoration>(ast::PipelineStage::kCompute, Source{}));
mod->AddFunction(func);
}
ASSERT_TRUE(td.Determine()) << td.error();
ASSERT_TRUE(b.Build());
EXPECT_EQ(DumpBuilder(b), R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %7 "a"
OpEntryPoint GLCompute %17 "b"
OpExecutionMode %7 LocalSize 1 1 1
OpExecutionMode %17 LocalSize 1 1 1
OpName %3 "tint_44617461"
OpMemberName %3 0 "tint_64"
OpName %1 "tint_64617461"
OpName %7 "tint_61"
OpName %14 "tint_76"
OpName %17 "tint_62"
OpName %21 "tint_76"
OpDecorate %3 Block
OpMemberDecorate %3 0 Offset 0
OpDecorate %1 Binding 0
OpDecorate %1 DescriptorSet 0
%4 = OpTypeFloat 32
%3 = OpTypeStruct %4
%2 = OpTypePointer StorageBuffer %3
%1 = OpVariable %2 StorageBuffer
%6 = OpTypeVoid
%5 = OpTypeFunction %6
%9 = OpTypeInt 32 0
%10 = OpConstant %9 0
%11 = OpTypePointer StorageBuffer %4
%15 = OpTypePointer Function %4
%16 = OpConstantNull %4
%7 = OpFunction %6 None %5
%8 = OpLabel
%14 = OpVariable %15 Function %16
%12 = OpAccessChain %11 %1 %10
%13 = OpLoad %4 %12
OpStore %14 %13
OpReturn
OpFunctionEnd
%17 = OpFunction %6 None %5
%18 = OpLabel
%21 = OpVariable %15 Function %16
%19 = OpAccessChain %11 %1 %10
%20 = OpLoad %4 %19
OpStore %21 %20
OpReturn
OpFunctionEnd
)");
}
} // namespace
} // namespace spirv
} // namespace writer
} // namespace tint