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// Copyright 2024 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.
//
// 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
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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#include "src/tint/lang/hlsl/writer/helper_test.h"
using namespace tint::core::fluent_types; // NOLINT
using namespace tint::core::number_suffixes; // NOLINT
namespace tint::hlsl::writer {
namespace {
TEST_F(HlslWriterTest, Loop) {
auto* func = b.Function("a", ty.void_(), core::ir::Function::PipelineStage::kCompute);
func->SetWorkgroupSize(1, 1, 1);
b.Append(func->Block(), [&] {
auto* l = b.Loop();
b.Append(l->Body(), [&] { b.ExitLoop(l); });
b.Append(l->Continuing(), [&] { b.NextIteration(l); });
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void a() {
{
while(true) {
break;
}
}
}
)");
}
TEST_F(HlslWriterTest, LoopContinueAndBreakIf) {
auto* func = b.Function("a", ty.void_(), core::ir::Function::PipelineStage::kCompute);
func->SetWorkgroupSize(1, 1, 1);
b.Append(func->Block(), [&] {
auto* l = b.Loop();
b.Append(l->Body(), [&] { b.Continue(l); });
b.Append(l->Continuing(), [&] { b.BreakIf(l, true); });
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void a() {
{
while(true) {
{
if (true) { break; }
}
continue;
}
}
}
)");
}
TEST_F(HlslWriterTest, LoopBodyVarInContinue) {
auto* func = b.Function("a", ty.void_(), core::ir::Function::PipelineStage::kCompute);
func->SetWorkgroupSize(1, 1, 1);
b.Append(func->Block(), [&] {
auto* l = b.Loop();
b.Append(l->Body(), [&] {
auto* v = b.Var("v", b.Zero<bool>());
b.Continue(l);
b.Append(l->Continuing(), [&] { b.BreakIf(l, v); });
});
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void a() {
{
while(true) {
bool v = false;
{
if (v) { break; }
}
continue;
}
}
}
)");
}
TEST_F(HlslWriterTest, LoopInitializer) {
auto* func = b.Function("a", ty.void_(), core::ir::Function::PipelineStage::kCompute);
func->SetWorkgroupSize(1, 1, 1);
b.Append(func->Block(), [&] {
auto* l = b.Loop();
b.Append(l->Initializer(), [&] {
auto* v = b.Var("v", b.Zero<bool>());
b.NextIteration(l);
b.Append(l->Body(), [&] { b.Continue(l); });
b.Append(l->Continuing(), [&] { b.BreakIf(l, v); });
});
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void a() {
{
bool v = false;
while(true) {
{
if (v) { break; }
}
continue;
}
}
}
)");
}
} // namespace
} // namespace tint::hlsl::writer