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// Copyright 2023 The Dawn & Tint Authors
//
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// 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.
//
// 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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#include "src/tint/lang/core/ir/break_if.h"
#include "gmock/gmock.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_BreakIfTest = IRTestHelper;
TEST_F(IR_BreakIfTest, Usage) {
auto* loop = b.Loop();
auto* cond = b.Constant(true);
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* brk = b.BreakIf(loop, cond, arg1, arg2);
EXPECT_THAT(cond->Usages(), testing::UnorderedElementsAre(Usage{brk, 0u}));
EXPECT_THAT(arg1->Usages(), testing::UnorderedElementsAre(Usage{brk, 1u}));
EXPECT_THAT(arg2->Usages(), testing::UnorderedElementsAre(Usage{brk, 2u}));
}
TEST_F(IR_BreakIfTest, Results) {
auto* loop = b.Loop();
auto* cond = b.Constant(true);
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* brk = b.BreakIf(loop, cond, arg1, arg2);
EXPECT_TRUE(brk->Results().IsEmpty());
}
TEST_F(IR_BreakIfTest, Fail_NullLoop) {
EXPECT_DEATH_IF_SUPPORTED(
{
Module mod;
Builder b{mod};
b.BreakIf(nullptr, true);
},
"");
}
TEST_F(IR_BreakIfTest, Clone) {
auto* loop = b.Loop();
auto* cond = b.Constant(true);
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* brk = b.BreakIf(loop, cond, arg1, arg2);
auto* new_loop = clone_ctx.Clone(loop);
clone_ctx.Replace(loop, new_loop);
auto* new_brk = clone_ctx.Clone(brk);
EXPECT_NE(brk, new_brk);
EXPECT_EQ(new_loop, new_brk->Loop());
auto args = new_brk->Args();
EXPECT_EQ(2u, args.Length());
auto new_cond = new_brk->Condition()->As<Constant>()->Value();
ASSERT_TRUE(new_cond->Is<core::constant::Scalar<bool>>());
EXPECT_TRUE(new_cond->As<core::constant::Scalar<bool>>()->ValueAs<bool>());
auto new_arg0 = args[0]->As<Constant>()->Value();
ASSERT_TRUE(new_arg0->Is<core::constant::Scalar<u32>>());
EXPECT_EQ(1_u, new_arg0->As<core::constant::Scalar<u32>>()->ValueAs<u32>());
auto new_arg1 = args[1]->As<Constant>()->Value();
ASSERT_TRUE(new_arg1->Is<core::constant::Scalar<u32>>());
EXPECT_EQ(2_u, new_arg1->As<core::constant::Scalar<u32>>()->ValueAs<u32>());
}
TEST_F(IR_BreakIfTest, CloneNoArgs) {
auto* loop = b.Loop();
auto* cond = b.Constant(true);
auto* brk = b.BreakIf(loop, cond);
auto* new_brk = clone_ctx.Clone(brk);
auto args = new_brk->Args();
EXPECT_EQ(0u, args.Length());
}
TEST_F(IR_BreakIfTest, SetLoop) {
auto* loop1 = b.Loop();
auto* loop2 = b.Loop();
auto* cond = b.Constant(true);
auto* arg1 = b.Constant(1_u);
auto* arg2 = b.Constant(2_u);
auto* brk = b.BreakIf(loop1, cond, arg1, arg2);
EXPECT_THAT(loop1->Exits(), testing::ElementsAre(brk));
brk->SetLoop(loop2);
EXPECT_TRUE(loop1->Exits().IsEmpty());
EXPECT_THAT(loop2->Exits(), testing::ElementsAre(brk));
}
} // namespace
} // namespace tint::core::ir