| // 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/ir/return.h" |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest-spi.h" |
| #include "src/tint/ir/ir_test_helper.h" |
| |
| namespace tint::ir { |
| namespace { |
| |
| using namespace tint::number_suffixes; // NOLINT |
| using IR_ReturnTest = IRTestHelper; |
| |
| TEST_F(IR_ReturnTest, ImplicitNoValue) { |
| auto* func = b.Function("myfunc", ty.void_()); |
| auto* ret = b.Return(func); |
| ASSERT_EQ(ret->Func(), func); |
| EXPECT_TRUE(ret->Args().IsEmpty()); |
| EXPECT_EQ(ret->Value(), nullptr); |
| EXPECT_THAT(func->Usages(), testing::UnorderedElementsAre(Usage{ret, 0u})); |
| } |
| |
| TEST_F(IR_ReturnTest, WithValue) { |
| auto* func = b.Function("myfunc", ty.i32()); |
| auto* val = b.Constant(42_i); |
| auto* ret = b.Return(func, val); |
| ASSERT_EQ(ret->Func(), func); |
| ASSERT_EQ(ret->Args().Length(), 1u); |
| EXPECT_EQ(ret->Args()[0], val); |
| EXPECT_EQ(ret->Value(), val); |
| EXPECT_THAT(func->Usages(), testing::UnorderedElementsAre(Usage{ret, 0u})); |
| EXPECT_THAT(val->Usages(), testing::UnorderedElementsAre(Usage{ret, 1u})); |
| } |
| |
| TEST_F(IR_ReturnTest, Result) { |
| auto* vfunc = b.Function("vfunc", ty.void_()); |
| auto* ifunc = b.Function("ifunc", ty.i32()); |
| |
| { |
| auto* ret1 = b.Return(vfunc); |
| EXPECT_FALSE(ret1->HasResults()); |
| EXPECT_FALSE(ret1->HasMultiResults()); |
| } |
| |
| { |
| auto* ret2 = b.Return(ifunc, b.Constant(42_i)); |
| EXPECT_FALSE(ret2->HasResults()); |
| EXPECT_FALSE(ret2->HasMultiResults()); |
| } |
| } |
| |
| } // namespace |
| } // namespace tint::ir |