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// Copyright 2023 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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#include "src/tint/lang/core/ir/switch.h"
#include "gmock/gmock.h"
#include "gtest/gtest-spi.h"
#include "src/tint/lang/core/ir/ir_helper_test.h"
namespace tint::core::ir {
namespace {
using namespace tint::core::number_suffixes; // NOLINT
using IR_SwitchTest = IRTestHelper;
TEST_F(IR_SwitchTest, Usage) {
auto* cond = b.Constant(true);
auto* switch_ = b.Switch(cond);
EXPECT_THAT(cond->Usages(), testing::UnorderedElementsAre(Usage{switch_, 0u}));
}
TEST_F(IR_SwitchTest, Results) {
auto* cond = b.Constant(true);
auto* switch_ = b.Switch(cond);
EXPECT_TRUE(switch_->Results().IsEmpty());
}
TEST_F(IR_SwitchTest, Parent) {
auto* switch_ = b.Switch(1_i);
b.DefaultCase(switch_);
EXPECT_THAT(switch_->Cases().Front().block->Parent(), switch_);
}
TEST_F(IR_SwitchTest, Clone) {
auto* switch_ = b.Switch(1_i);
b.Case(switch_, {nullptr, b.Constant(2_i)});
b.Case(switch_, {b.Constant(3_i)});
auto* new_switch = clone_ctx.Clone(switch_);
EXPECT_NE(switch_, new_switch);
auto new_cond = new_switch->Condition()->As<Constant>()->Value();
ASSERT_TRUE(new_cond->Is<core::constant::Scalar<i32>>());
EXPECT_EQ(1_i, new_cond->As<core::constant::Scalar<i32>>()->ValueAs<i32>());
auto& cases = new_switch->Cases();
ASSERT_EQ(2u, cases.Length());
{
auto& case1 = cases[0];
EXPECT_NE(nullptr, case1.block);
EXPECT_NE(switch_->Cases()[0].block, case1.block);
ASSERT_EQ(2u, case1.selectors.Length());
EXPECT_EQ(nullptr, case1.selectors[0].val);
auto val = case1.selectors[1].val->Value();
ASSERT_TRUE(val->Is<core::constant::Scalar<i32>>());
EXPECT_EQ(2_i, val->As<core::constant::Scalar<i32>>()->ValueAs<i32>());
}
{
auto& case2 = cases[1];
EXPECT_NE(nullptr, case2.block);
EXPECT_NE(switch_->Cases()[1].block, case2.block);
ASSERT_EQ(1u, case2.selectors.Length());
auto val = case2.selectors[0].val->Value();
ASSERT_TRUE(val->Is<core::constant::Scalar<i32>>());
EXPECT_EQ(3_i, val->As<core::constant::Scalar<i32>>()->ValueAs<i32>());
}
}
TEST_F(IR_SwitchTest, CloneWithExits) {
Switch* new_switch = nullptr;
{
auto* switch_ = b.Switch(1_i);
auto* blk = b.Case(switch_, {b.Constant(3_i)});
b.Append(blk, [&] { b.ExitSwitch(switch_); });
new_switch = clone_ctx.Clone(switch_);
}
auto& case_ = new_switch->Cases().Front();
ASSERT_TRUE(case_.block->Front()->Is<ExitSwitch>());
EXPECT_EQ(new_switch, case_.block->Front()->As<ExitSwitch>()->Switch());
}
TEST_F(IR_SwitchTest, CloneWithResults) {
Switch* new_switch = nullptr;
auto* r0 = b.InstructionResult(ty.i32());
auto* r1 = b.InstructionResult(ty.f32());
{
auto* switch_ = b.Switch(1_i);
switch_->SetResults(Vector{r0, r1});
auto* blk = b.Case(switch_, Vector{b.Constant(3_i)});
b.Append(blk, [&] { b.ExitSwitch(switch_, b.Constant(42_i), b.Constant(42_f)); });
new_switch = clone_ctx.Clone(switch_);
}
ASSERT_EQ(2u, new_switch->Results().Length());
auto* new_r0 = new_switch->Results()[0]->As<InstructionResult>();
ASSERT_NE(new_r0, nullptr);
ASSERT_NE(new_r0, r0);
EXPECT_EQ(new_r0->Type(), ty.i32());
auto* new_r1 = new_switch->Results()[1]->As<InstructionResult>();
ASSERT_NE(new_r1, nullptr);
ASSERT_NE(new_r1, r1);
EXPECT_EQ(new_r1->Type(), ty.f32());
}
} // namespace
} // namespace tint::core::ir