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// 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/instruction.h"
#include "src/tint/ir/test_helper.h"
#include "src/tint/utils/string_stream.h"
namespace tint::ir {
namespace {
using namespace tint::number_suffixes; // NOLINT
using IR_InstructionTest = TestHelper;
TEST_F(IR_InstructionTest, Bitcast) {
auto& b = CreateEmptyBuilder();
const auto* inst =
b.builder.Bitcast(b.builder.ir.types.Get<type::I32>(), b.builder.Constant(4_i));
ASSERT_TRUE(inst->Is<ir::Bitcast>());
ASSERT_NE(inst->Type(), nullptr);
ASSERT_EQ(inst->Args().Length(), 1u);
ASSERT_TRUE(inst->Args()[0]->Is<Constant>());
auto val = inst->Args()[0]->As<Constant>()->value;
ASSERT_TRUE(val->Is<constant::Scalar<i32>>());
EXPECT_EQ(4_i, val->As<constant::Scalar<i32>>()->ValueAs<i32>());
utils::StringStream str;
inst->ToInstruction(str);
EXPECT_EQ(str.str(), "%1(i32) = bitcast 4i");
}
TEST_F(IR_InstructionTest, Bitcast_Usage) {
auto& b = CreateEmptyBuilder();
const auto* inst =
b.builder.Bitcast(b.builder.ir.types.Get<type::I32>(), b.builder.Constant(4_i));
ASSERT_EQ(inst->Args().Length(), 1u);
ASSERT_NE(inst->Args()[0], nullptr);
ASSERT_EQ(inst->Args()[0]->Usage().Length(), 1u);
EXPECT_EQ(inst->Args()[0]->Usage()[0], inst);
}
} // namespace
} // namespace tint::ir