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// Copyright 2021 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/transform/calculate_array_length.h"
#include "src/transform/simplify_pointers.h"
#include "src/transform/test_helper.h"
#include "src/transform/unshadow.h"
namespace tint {
namespace transform {
namespace {
using CalculateArrayLengthTest = TransformTest;
TEST_F(CalculateArrayLengthTest, Error_MissingCalculateArrayLength) {
auto* src = "";
auto* expect =
"error: tint::transform::CalculateArrayLength depends on "
"tint::transform::SimplifyPointers but the dependency was not run";
auto got = Run<CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(CalculateArrayLengthTest, Basic) {
auto* src = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var len : u32 = arrayLength(&sb.arr);
}
)";
auto* expect = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB, result : ptr<function, u32>)
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var tint_symbol_1 : u32 = 0u;
tint_symbol(sb, &(tint_symbol_1));
let tint_symbol_2 : u32 = ((tint_symbol_1 - 4u) / 4u);
var len : u32 = tint_symbol_2;
}
)";
auto got = Run<Unshadow, SimplifyPointers, CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(CalculateArrayLengthTest, InSameBlock) {
auto* src = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var a : u32 = arrayLength(&sb.arr);
var b : u32 = arrayLength(&sb.arr);
var c : u32 = arrayLength(&sb.arr);
}
)";
auto* expect = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB, result : ptr<function, u32>)
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var tint_symbol_1 : u32 = 0u;
tint_symbol(sb, &(tint_symbol_1));
let tint_symbol_2 : u32 = ((tint_symbol_1 - 4u) / 4u);
var a : u32 = tint_symbol_2;
var b : u32 = tint_symbol_2;
var c : u32 = tint_symbol_2;
}
)";
auto got = Run<Unshadow, SimplifyPointers, CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(CalculateArrayLengthTest, WithStride) {
auto* src = R"(
struct SB {
x : i32;
y : f32;
arr : [[stride(64)]] array<i32>;
};
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var len : u32 = arrayLength(&sb.arr);
}
)";
auto* expect = R"(
struct SB {
x : i32;
y : f32;
arr : [[stride(64)]] array<i32>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB, result : ptr<function, u32>)
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var tint_symbol_1 : u32 = 0u;
tint_symbol(sb, &(tint_symbol_1));
let tint_symbol_2 : u32 = ((tint_symbol_1 - 8u) / 64u);
var len : u32 = tint_symbol_2;
}
)";
auto got = Run<Unshadow, SimplifyPointers, CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(CalculateArrayLengthTest, Nested) {
auto* src = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
if (true) {
var len : u32 = arrayLength(&sb.arr);
} else {
if (true) {
var len : u32 = arrayLength(&sb.arr);
}
}
}
)";
auto* expect = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB, result : ptr<function, u32>)
[[group(0), binding(0)]] var<storage, read> sb : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
if (true) {
var tint_symbol_1 : u32 = 0u;
tint_symbol(sb, &(tint_symbol_1));
let tint_symbol_2 : u32 = ((tint_symbol_1 - 4u) / 4u);
var len : u32 = tint_symbol_2;
} else {
if (true) {
var tint_symbol_3 : u32 = 0u;
tint_symbol(sb, &(tint_symbol_3));
let tint_symbol_4 : u32 = ((tint_symbol_3 - 4u) / 4u);
var len : u32 = tint_symbol_4;
}
}
}
)";
auto got = Run<Unshadow, SimplifyPointers, CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(CalculateArrayLengthTest, MultipleStorageBuffers) {
auto* src = R"(
struct SB1 {
x : i32;
arr1 : array<i32>;
};
struct SB2 {
x : i32;
arr2 : array<vec4<f32>>;
};
[[group(0), binding(0)]] var<storage, read> sb1 : SB1;
[[group(0), binding(1)]] var<storage, read> sb2 : SB2;
[[stage(compute), workgroup_size(1)]]
fn main() {
var len1 : u32 = arrayLength(&(sb1.arr1));
var len2 : u32 = arrayLength(&(sb2.arr2));
var x : u32 = (len1 + len2);
}
)";
auto* expect = R"(
struct SB1 {
x : i32;
arr1 : array<i32>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB1, result : ptr<function, u32>)
struct SB2 {
x : i32;
arr2 : array<vec4<f32>>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol_3([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB2, result : ptr<function, u32>)
[[group(0), binding(0)]] var<storage, read> sb1 : SB1;
[[group(0), binding(1)]] var<storage, read> sb2 : SB2;
[[stage(compute), workgroup_size(1)]]
fn main() {
var tint_symbol_1 : u32 = 0u;
tint_symbol(sb1, &(tint_symbol_1));
let tint_symbol_2 : u32 = ((tint_symbol_1 - 4u) / 4u);
var tint_symbol_4 : u32 = 0u;
tint_symbol_3(sb2, &(tint_symbol_4));
let tint_symbol_5 : u32 = ((tint_symbol_4 - 16u) / 16u);
var len1 : u32 = tint_symbol_2;
var len2 : u32 = tint_symbol_5;
var x : u32 = (len1 + len2);
}
)";
auto got = Run<Unshadow, SimplifyPointers, CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(CalculateArrayLengthTest, Shadowing) {
auto* src = R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[group(0), binding(0)]] var<storage, read> a : SB;
[[group(0), binding(1)]] var<storage, read> b : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
let x = &a;
var a : u32 = arrayLength(&a.arr);
{
var b : u32 = arrayLength(&((*x).arr));
}
}
)";
auto* expect =
R"(
struct SB {
x : i32;
arr : array<i32>;
};
[[internal(intrinsic_buffer_size)]]
fn tint_symbol([[internal(disable_validation__ignore_constructible_function_parameter)]] buffer : SB, result : ptr<function, u32>)
[[group(0), binding(0)]] var<storage, read> a : SB;
[[group(0), binding(1)]] var<storage, read> b : SB;
[[stage(compute), workgroup_size(1)]]
fn main() {
var tint_symbol_1 : u32 = 0u;
tint_symbol(a, &(tint_symbol_1));
let tint_symbol_2 : u32 = ((tint_symbol_1 - 4u) / 4u);
var a_1 : u32 = tint_symbol_2;
{
var tint_symbol_3 : u32 = 0u;
tint_symbol(a, &(tint_symbol_3));
let tint_symbol_4 : u32 = ((tint_symbol_3 - 4u) / 4u);
var b_1 : u32 = tint_symbol_4;
}
}
)";
auto got = Run<Unshadow, SimplifyPointers, CalculateArrayLength>(src);
EXPECT_EQ(expect, str(got));
}
} // namespace
} // namespace transform
} // namespace tint