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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.
//
// 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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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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#include "src/tint/lang/msl/writer/printer/helper_test.h"
using namespace tint::core::number_suffixes; // NOLINT
namespace tint::msl::writer {
namespace {
TEST_F(MslPrinterTest, If) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
auto* if_ = b.If(true);
b.Append(if_->True(), [&] { b.ExitIf(if_); });
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
void foo() {
if (true) {
}
}
)");
}
TEST_F(MslPrinterTest, IfWithElseIf) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
auto* if_ = b.If(true);
b.Append(if_->True(), [&] { b.ExitIf(if_); });
b.Append(if_->False(), [&] {
auto* false_ = b.If(false);
b.Append(false_->True(), [&] { b.ExitIf(false_); });
b.ExitIf(if_);
});
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
void foo() {
if (true) {
} else {
if (false) {
}
}
}
)");
}
TEST_F(MslPrinterTest, IfWithElse) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
auto* if_ = b.If(true);
b.Append(if_->True(), [&] { b.ExitIf(if_); });
b.Append(if_->False(), [&] { b.Return(func); });
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
void foo() {
if (true) {
} else {
return;
}
}
)");
}
TEST_F(MslPrinterTest, IfBothBranchesReturn) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
auto* if_ = b.If(true);
b.Append(if_->True(), [&] { b.Return(func); });
b.Append(if_->False(), [&] { b.Return(func); });
b.Unreachable();
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
void foo() {
if (true) {
return;
} else {
return;
}
/* unreachable */
}
)");
}
// Requires a transform to turn PHIs into lets
TEST_F(MslPrinterTest, DISABLED_IfWithSinglePhi) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
auto* i = b.If(true);
i->SetResults(b.InstructionResult(ty.i32()));
b.Append(i->True(), [&] { //
b.ExitIf(i, 10_i);
});
b.Append(i->False(), [&] { //
b.ExitIf(i, 20_i);
});
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
void foo() {
int tint_symbol;
if (true) {
tint_symbol = 10;
} else {
tint_symbol = 20;
}
}
)");
}
// Requires a transform to turn PHIs into lets
TEST_F(MslPrinterTest, DISABLED_IfWithMultiPhi) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
auto* i = b.If(true);
i->SetResults(b.InstructionResult(ty.i32()), b.InstructionResult(ty.bool_()));
b.Append(i->True(), [&] { //
b.ExitIf(i, 10_i, true);
});
b.Append(i->False(), [&] { //
b.ExitIf(i, 20_i, false);
});
b.Return(func);
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
void foo() {
int tint_symbol;
bool tint_symbol_1;
if (true) {
tint_symbol = 10;
tint_symbol_1 = true;
} else {
tint_symbol = 20;
tint_symbol_1 = false;
}
}
)");
}
// Requires a transform to turn PHIs into lets
TEST_F(MslPrinterTest, DISABLED_IfWithMultiPhiReturn1) {
auto* func = b.Function("foo", ty.i32());
b.Append(func->Block(), [&] {
auto* i = b.If(true);
i->SetResults(b.InstructionResult(ty.i32()), b.InstructionResult(ty.bool_()));
b.Append(i->True(), [&] { //
b.ExitIf(i, 10_i, true);
});
b.Append(i->False(), [&] { //
b.ExitIf(i, 20_i, false);
});
b.Return(func, i->Result(0));
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
int foo() {
int tint_symbol;
bool tint_symbol_1;
if (true) {
tint_symbol = 10;
tint_symbol_1 = true;
} else {
tint_symbol = 20;
tint_symbol_1 = false;
}
return tint_symbol;
}
)");
}
// Requires a transform to turn PHIs into lets
TEST_F(MslPrinterTest, DISABLED_IfWithMultiPhiReturn2) {
auto* func = b.Function("foo", ty.bool_());
b.Append(func->Block(), [&] {
auto* i = b.If(true);
i->SetResults(b.InstructionResult(ty.i32()), b.InstructionResult(ty.bool_()));
b.Append(i->True(), [&] { //
b.ExitIf(i, 10_i, true);
});
b.Append(i->False(), [&] { //
b.ExitIf(i, 20_i, false);
});
b.Return(func, i->Result(1));
});
ASSERT_TRUE(Generate()) << err_ << output_;
EXPECT_EQ(output_, MetalHeader() + R"(
bool foo() {
int tint_symbol;
bool tint_symbol_1;
if (true) {
tint_symbol = 10;
tint_symbol_1 = true;
} else {
tint_symbol = 20;
tint_symbol_1 = false;
}
return tint_symbol_1;
}
)");
}
} // namespace
} // namespace tint::msl::writer