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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
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// 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
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// GEN_BUILD:CONDITION(tint_build_wgsl_reader && tint_build_wgsl_writer)
#include "gtest/gtest.h"
#include "src/tint/lang/core/ir/disassembly.h"
#include "src/tint/lang/wgsl/reader/program_to_ir/program_to_ir.h"
#include "src/tint/lang/wgsl/reader/reader.h"
#include "src/tint/lang/wgsl/writer/ir_to_program/ir_to_program.h"
#include "src/tint/lang/wgsl/writer/raise/raise.h"
#include "src/tint/lang/wgsl/writer/writer.h"
#include "src/tint/utils/text/string.h"
namespace tint::wgsl {
namespace {
using namespace tint::core::number_suffixes; // NOLINT
class IRToProgramRoundtripTest : public testing::Test {
public:
struct Result {
/// The resulting WGSL
std::string wgsl;
/// The resulting AST
std::string ast;
/// The resulting IR before raising
std::string ir_pre_raise;
/// The resulting IR after raising
std::string ir_post_raise;
/// The resulting error
std::string err;
/// The expected WGSL
std::string expected;
};
/// @return the round-tripped string and the expected string
Result Run(std::string input_wgsl, std::string expected_wgsl) {
std::string input{tint::TrimSpace(input_wgsl)};
Result result;
wgsl::reader::Options options;
options.allowed_features = wgsl::AllowedFeatures::Everything();
Source::File file("test.wgsl", std::string(input));
auto ir_module = wgsl::reader::WgslToIR(&file, options);
if (ir_module != Success) {
return result;
}
result.ir_pre_raise = core::ir::Disassemble(ir_module.Get()).Plain();
if (auto res = tint::wgsl::writer::Raise(ir_module.Get()); res != Success) {
result.err = res.Failure().reason.Str();
return result;
}
result.ir_post_raise = core::ir::Disassemble(ir_module.Get()).Plain();
writer::ProgramOptions program_options;
program_options.allowed_features = AllowedFeatures::Everything();
auto output_program = wgsl::writer::IRToProgram(ir_module.Get(), program_options);
if (!output_program.IsValid()) {
result.err = output_program.Diagnostics().Str();
result.ast = Program::printer(output_program);
return result;
}
auto output = wgsl::writer::Generate(output_program, {});
if (output != Success) {
std::stringstream ss;
ss << "wgsl::Generate() errored: " << output.Failure();
result.err = ss.str();
result.ast = Program::printer(output_program);
return result;
}
result.expected = expected_wgsl.empty() ? input : tint::TrimSpace(expected_wgsl);
if (!result.expected.empty()) {
result.expected = "\n" + result.expected + "\n";
}
result.wgsl = std::string(tint::TrimSpace(output->wgsl));
if (!result.wgsl.empty()) {
result.wgsl = "\n" + result.wgsl + "\n";
}
return result;
}
Result Run(std::string wgsl) { return Run(wgsl, wgsl); }
};
std::ostream& operator<<(std::ostream& o, const IRToProgramRoundtripTest::Result& res) {
if (!res.err.empty()) {
o << "============================" << std::endl
<< "== Error ==" << std::endl
<< "============================" << std::endl
<< res.err << std::endl
<< std::endl;
}
if (!res.ir_pre_raise.empty()) {
o << "============================" << std::endl
<< "== IR (pre-raise) ==" << std::endl
<< "============================" << std::endl
<< res.ir_pre_raise << std::endl
<< std::endl;
}
if (!res.ir_post_raise.empty()) {
o << "============================" << std::endl
<< "== IR (post-raise) ==" << std::endl
<< "============================" << std::endl
<< res.ir_post_raise << std::endl
<< std::endl;
}
if (!res.ast.empty()) {
o << "============================" << std::endl
<< "== AST ==" << std::endl
<< "============================" << std::endl
<< res.ast << std::endl
<< std::endl;
}
return o;
}
#define RUN_TEST(...) \
do { \
if (auto res = Run(__VA_ARGS__); res.err.empty()) { \
EXPECT_EQ(res.expected, res.wgsl) << res; \
} else { \
FAIL() << res; \
} \
} while (false)
TEST_F(IRToProgramRoundtripTest, EmptyModule) {
RUN_TEST("");
}
TEST_F(IRToProgramRoundtripTest, SingleFunction_Empty) {
RUN_TEST(R"(
fn f() {
}
)");
}
TEST_F(IRToProgramRoundtripTest, SingleFunction_Return) {
RUN_TEST(R"(
fn f() {
return;
}
)",
R"(
fn f() {
}
)");
}
TEST_F(IRToProgramRoundtripTest, SingleFunction_Return_i32) {
RUN_TEST(R"(
fn f() -> i32 {
return 42i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, SingleFunction_Parameters) {
RUN_TEST(R"(
fn f(i : i32, u : u32) -> i32 {
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, SingleFunction_UnrestrictedPointerParameters) {
RUN_TEST(R"(
fn f(p : ptr<uniform, i32>) -> i32 {
return *(p);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Struct declaration
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, StructDecl_Scalars) {
RUN_TEST(R"(
struct S {
a : i32,
b : u32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberAlign) {
RUN_TEST(R"(
struct S {
a : i32,
@align(32u)
b : u32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberSize) {
RUN_TEST(R"(
struct S {
a : i32,
@size(32u)
b : u32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberLocation) {
RUN_TEST(R"(
struct S {
a : i32,
@location(1u)
b : u32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberIndex) {
RUN_TEST(R"(
enable chromium_internal_dual_source_blending;
struct S {
a : i32,
@location(0u) @blend_src(0u)
b : u32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberBuiltin) {
RUN_TEST(R"(
struct S {
a : i32,
@builtin(position)
b : vec4<f32>,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberInterpolateType) {
RUN_TEST(R"(
struct S {
a : i32,
@location(1u) @interpolate(flat)
b : u32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberInterpolateTypeSampling) {
RUN_TEST(R"(
struct S {
a : i32,
@location(1u) @interpolate(perspective, centroid)
b : f32,
c : f32,
}
var<private> v : S;
)");
}
TEST_F(IRToProgramRoundtripTest, StructDecl_MemberInvariant) {
RUN_TEST(R"(
struct S {
a : i32,
@builtin(position) @invariant
b : vec4<f32>,
c : f32,
}
var<private> v : S;
)");
}
////////////////////////////////////////////////////////////////////////////////
// Function Call
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, FnCall_NoArgs_NoRet) {
RUN_TEST(R"(
fn a() {
}
fn b() {
a();
}
)");
}
TEST_F(IRToProgramRoundtripTest, FnCall_NoArgs_Ret_i32) {
RUN_TEST(R"(
fn a() -> i32 {
return 1i;
}
fn b() {
var i : i32 = a();
}
)");
}
TEST_F(IRToProgramRoundtripTest, FnCall_3Args_NoRet) {
RUN_TEST(R"(
fn a(x : i32, y : u32, z : f32) {
}
fn b() {
a(1i, 2u, 3.0f);
}
)");
}
TEST_F(IRToProgramRoundtripTest, FnCall_3Args_Ret_f32) {
RUN_TEST(R"(
fn a(x : i32, y : u32, z : f32) -> f32 {
return z;
}
fn b() {
var v : f32 = a(1i, 2u, 3.0f);
}
)");
}
TEST_F(IRToProgramRoundtripTest, FnCall_PtrArgs) {
RUN_TEST(R"(
var<private> y : i32 = 2i;
fn a(px : ptr<function, i32>, py : ptr<private, i32>) -> i32 {
return (*(px) + *(py));
}
fn b() -> i32 {
var x : i32 = 1i;
return a(&(x), &(y));
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Core Builtin Call
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, CoreBuiltinCall_Stmt) {
RUN_TEST(R"(
fn f() {
workgroupBarrier();
}
)");
}
TEST_F(IRToProgramRoundtripTest, CoreBuiltinCall_Expr) {
RUN_TEST(R"(
fn f(a : i32, b : i32) {
var i : i32 = max(a, b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CoreBuiltinCall_PhonyAssignment) {
RUN_TEST(R"(
fn f(a : i32, b : i32) {
_ = max(a, b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CoreBuiltinCall_UnusedLet) {
RUN_TEST(R"(
fn f(a : i32, b : i32) {
let unused = max(a, b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CoreBuiltinCall_PtrArg) {
RUN_TEST(R"(
@group(0) @binding(0) var<storage, read> v : array<u32>;
fn foo() -> u32 {
return arrayLength(&(v));
}
)");
}
TEST_F(IRToProgramRoundtripTest, CoreBuiltinCall_DisableDerivativeUniformity) {
RUN_TEST(R"(
fn f(in : f32) {
let x = dpdx(in);
let y = dpdy(in);
}
)",
R"(
diagnostic(off, derivative_uniformity);
fn f(in : f32) {
let x = dpdx(in);
let y = dpdy(in);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Type Construct
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, TypeConstruct_i32) {
RUN_TEST(R"(
fn f(i : i32) {
var v : i32 = i32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_u32) {
RUN_TEST(R"(
fn f(i : u32) {
var v : u32 = u32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_f32) {
RUN_TEST(R"(
fn f(i : f32) {
var v : f32 = f32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_bool) {
RUN_TEST(R"(
fn f(i : bool) {
var v : bool = bool(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_struct) {
RUN_TEST(R"(
struct S {
a : i32,
b : u32,
c : f32,
}
fn f(a : i32, b : u32, c : f32) {
var v : S = S(a, b, c);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_array) {
RUN_TEST(R"(
fn f(i : i32) {
var v : array<i32, 3u> = array<i32, 3u>(i, i, i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_vec3i_Splat) {
RUN_TEST(R"(
fn f(i : i32) {
var v : vec3<i32> = vec3<i32>(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_vec3i_Scalars) {
RUN_TEST(R"(
fn f(i : i32) {
var v : vec3<i32> = vec3<i32>(i, i, i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_mat2x3f_Scalars) {
RUN_TEST(R"(
fn f(i : f32) {
var v : mat2x3<f32> = mat2x3<f32>(i, i, i, i, i, i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConstruct_mat2x3f_Columns) {
RUN_TEST(R"(
fn f(i : f32) {
var v : mat2x3<f32> = mat2x3<f32>(vec3<f32>(i, i, i), vec3<f32>(i, i, i));
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Type Convert
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, TypeConvert_i32_to_u32) {
RUN_TEST(R"(
fn f(i : i32) {
var v : u32 = u32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConvert_u32_to_f32) {
RUN_TEST(R"(
fn f(i : u32) {
var v : f32 = f32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConvert_f32_to_i32) {
RUN_TEST(R"(
fn f(i : f32) {
var v : i32 = i32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConvert_bool_to_u32) {
RUN_TEST(R"(
fn f(i : bool) {
var v : u32 = u32(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConvert_vec3i_to_vec3u) {
RUN_TEST(R"(
fn f(i : vec3<i32>) {
var v : vec3<u32> = vec3<u32>(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConvert_vec3u_to_vec3f) {
RUN_TEST(R"(
fn f(i : vec3<u32>) {
var v : vec3<f32> = vec3<f32>(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, TypeConvert_mat2x3f_to_mat2x3h) {
RUN_TEST(R"(
enable f16;
fn f(i : mat2x3<f32>) {
var v : mat2x3<f16> = mat2x3<f16>(i);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Bitcast
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Bitcast_i32_to_u32) {
RUN_TEST(R"(
fn f(i : i32) {
var v : u32 = bitcast<u32>(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, Bitcast_u32_to_f32) {
RUN_TEST(R"(
fn f(i : u32) {
var v : f32 = bitcast<f32>(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, Bitcast_f32_to_i32) {
RUN_TEST(R"(
fn f(i : f32) {
var v : i32 = bitcast<i32>(i);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Discard
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Discard) {
RUN_TEST(R"(
fn f() {
discard;
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Access
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Access_Value_vec3f_1) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> f32 {
return v[1];
}
)",
R"(
fn f(v : vec3<f32>) -> f32 {
return v.y;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_vec3f_1) {
RUN_TEST(R"(
var<private> v : vec3<f32>;
fn f() -> f32 {
return v[1];
}
)",
R"(
var<private> v : vec3<f32>;
fn f() -> f32 {
return v.y;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_vec3f_z) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> f32 {
return v.z;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_vec3f_z) {
RUN_TEST(R"(
var<private> v : vec3<f32>;
fn f() -> f32 {
return v.z;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_vec3f_g) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> f32 {
return v.g;
}
)",
R"(
fn f(v : vec3<f32>) -> f32 {
return v.y;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_vec3f_g) {
RUN_TEST(R"(
var<private> v : vec3<f32>;
fn f() -> f32 {
return v.g;
}
)",
R"(
var<private> v : vec3<f32>;
fn f() -> f32 {
return v.y;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_vec3f_i) {
RUN_TEST(R"(
fn f(v : vec3<f32>, i : i32) -> f32 {
return v[i];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_vec3f_i) {
RUN_TEST(R"(
var<private> v : vec3<f32>;
fn f(i : i32) -> f32 {
return v[i];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_mat3x2f_1_0) {
RUN_TEST(R"(
fn f(m : mat3x2<f32>) -> f32 {
return m[1][0];
}
)",
R"(
fn f(m : mat3x2<f32>) -> f32 {
return m[1i].x;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_mat3x2f_1_0) {
RUN_TEST(R"(
var<private> m : mat3x2<f32>;
fn f() -> f32 {
return m[1][0];
}
)",
R"(
var<private> m : mat3x2<f32>;
fn f() -> f32 {
return m[1i].x;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_mat3x2f_u_0) {
RUN_TEST(R"(
fn f(m : mat3x2<f32>, u : u32) -> f32 {
return m[u][0];
}
)",
R"(
fn f(m : mat3x2<f32>, u : u32) -> f32 {
return m[u].x;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_mat3x2f_u_0) {
RUN_TEST(R"(
var<private> m : mat3x2<f32>;
fn f(u : u32) -> f32 {
return m[u][0];
}
)",
R"(
var<private> m : mat3x2<f32>;
fn f(u : u32) -> f32 {
return m[u].x;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_mat3x2f_u_i) {
RUN_TEST(R"(
fn f(m : mat3x2<f32>, u : u32, i : i32) -> f32 {
return m[u][i];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_mat3x2f_u_i) {
RUN_TEST(R"(
var<private> m : mat3x2<f32>;
fn f(u : u32, i : i32) -> f32 {
return m[u][i];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_array_0u) {
RUN_TEST(R"(
fn f(a : array<i32, 4u>) -> i32 {
return a[0u];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_array_0u) {
RUN_TEST(R"(
var<private> a : array<i32, 4u>;
fn f() -> i32 {
return a[0u];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Value_array_i) {
RUN_TEST(R"(
fn f(a : array<i32, 4u>, i : i32) -> i32 {
return a[i];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Ref_array_i) {
RUN_TEST(R"(
var<private> a : array<i32, 4u>;
fn f(i : i32) -> i32 {
return a[i];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ValueStruct) {
RUN_TEST(R"(
struct Y {
a : i32,
b : i32,
c : i32,
}
struct X {
a : i32,
b : Y,
c : i32,
}
fn f(x : X) -> i32 {
return x.b.c;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ReferenceStruct) {
RUN_TEST(R"(
struct Y {
a : i32,
b : i32,
c : i32,
}
struct X {
a : i32,
b : Y,
c : i32,
}
fn f() -> i32 {
var x : X;
return x.b.c;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfArrayOfArray_123) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> i32 {
var v_1 : array<array<array<i32, 3u>, 4u>, 5u>;
return v_1[a(1i)][a(2i)][a(3i)];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfArrayOfArray_213) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> i32 {
var v_1 : array<array<array<i32, 3u>, 4u>, 5u>;
let v_2 = a(2i);
return v_1[a(1i)][v_2][a(3i)];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfArrayOfArray_312) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> i32 {
var v_1 : array<array<array<i32, 3u>, 4u>, 5u>;
let v_2 = a(3i);
return v_1[a(1i)][a(2i)][v_2];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfArrayOfArray_321) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> i32 {
var v_1 : array<array<array<i32, 3u>, 4u>, 5u>;
let v_2 = a(3i);
let v_3 = a(2i);
return v_1[a(1i)][v_3][v_2];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfMat3x4f_123) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> f32 {
return array<mat3x4<f32>, 5u>()[a(1i)][a(2i)][a(3i)];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfMat3x4f_213) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> f32 {
let v_1 = array<mat3x4<f32>, 5u>();
let v_2 = a(2i);
return v_1[a(1i)][v_2][a(3i)];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfMat3x4f_312) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> f32 {
let v_1 = array<mat3x4<f32>, 5u>();
let v_2 = a(3i);
return v_1[a(1i)][a(2i)][v_2];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_ArrayOfMat3x4f_321) {
RUN_TEST(R"(
fn a(v : i32) -> i32 {
return 1i;
}
fn f() -> f32 {
let v_1 = array<mat3x4<f32>, 5u>();
let v_2 = a(3i);
let v_3 = a(2i);
return v_1[a(1i)][v_3][v_2];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_UsePartialChains) {
RUN_TEST(R"(
var<private> a : array<array<array<i32, 4u>, 5u>, 6u>;
fn f(i : i32) -> i32 {
let p1 = &(a[i]);
let p2 = &((*(p1))[i]);
let p3 = &((*(p2))[i]);
let v1 = *(p1);
let v2 = *(p2);
let v3 = *(p3);
return v3;
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Swizzle
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Value_xy) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> vec2<f32> {
return v.xy;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Value_yz) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> vec2<f32> {
return v.yz;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Value_yzx) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> vec3<f32> {
return v.yzx;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Value_yzxy) {
RUN_TEST(R"(
fn f(v : vec3<f32>) -> vec4<f32> {
return v.yzxy;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Pointer_xy) {
RUN_TEST(R"(
fn f(v : ptr<function, vec3<f32>>) -> vec2<f32> {
return (*(v)).xy;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Pointer_yz) {
RUN_TEST(R"(
fn f(v : ptr<function, vec3<f32>>) -> vec2<f32> {
return (*(v)).yz;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Pointer_yzx) {
RUN_TEST(R"(
fn f(v : ptr<function, vec3<f32>>) -> vec3<f32> {
return (*(v)).yzx;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Access_Vec3_Pointer_yzxy) {
RUN_TEST(R"(
fn f(v : ptr<function, vec3<f32>>) -> vec4<f32> {
return (*(v)).yzxy;
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Unary ops
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, UnaryOp_Negate) {
RUN_TEST(R"(
fn f(i : i32) -> i32 {
return -(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, UnaryOp_Complement) {
RUN_TEST(R"(
fn f(i : u32) -> u32 {
return ~(i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, UnaryOp_Not) {
RUN_TEST(R"(
fn f(b : bool) -> bool {
return !(b);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Binary ops
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, BinaryOp_Add) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a + b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Subtract) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a - b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Multiply) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a * b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Divide) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a / b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Modulo) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a % b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_And) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a & b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Or) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a | b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Xor) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> i32 {
return (a ^ b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_Equal) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> bool {
return (a == b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_NotEqual) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> bool {
return (a != b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_LessThan) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> bool {
return (a < b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_GreaterThan) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> bool {
return (a > b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_LessThanEqual) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> bool {
return (a <= b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_GreaterThanEqual) {
RUN_TEST(R"(
fn f(a : i32, b : i32) -> bool {
return (a >= b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_ShiftLeft) {
RUN_TEST(R"(
fn f(a : i32, b : u32) -> i32 {
return (a << b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, BinaryOp_ShiftRight) {
RUN_TEST(R"(
fn f(a : i32, b : u32) -> i32 {
return (a >> b);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Short-circuiting binary ops
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Param_2) {
RUN_TEST(R"(
fn f(a : bool, b : bool) -> bool {
return (a && b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Param_3_ab_c) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
return ((a && b) && c);
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Param_3_a_bc) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
return ((a && b) && c);
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Let_2) {
RUN_TEST(R"(
fn f(a : bool, b : bool) -> bool {
let l = (a && b);
return l;
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Let_3_ab_c) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
let l = ((a && b) && c);
return l;
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Let_3_a_bc) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
let l = (a && (b && c));
return l;
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Call_2) {
RUN_TEST(R"(
fn a() -> bool {
return true;
}
fn b() -> bool {
return true;
}
fn f() -> bool {
return (a() && b());
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Call_3_ab_c) {
RUN_TEST(R"(
fn a() -> bool {
return true;
}
fn b() -> bool {
return true;
}
fn c() -> bool {
return true;
}
fn f() -> bool {
return ((a() && b()) && c());
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_And_Call_3_a_bc) {
RUN_TEST(R"(
fn a() -> bool {
return true;
}
fn b() -> bool {
return true;
}
fn c() -> bool {
return true;
}
fn f() -> bool {
return (a() && (b() && c()));
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Param_2) {
RUN_TEST(R"(
fn f(a : bool, b : bool) -> bool {
return (a || b);
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Param_3_ab_c) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
return ((a || b) || c);
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Param_3_a_bc) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
return (a || (b || c));
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Let_2) {
RUN_TEST(R"(
fn f(a : bool, b : bool) -> bool {
let l = (a || b);
return l;
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Let_3_ab_c) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
let l = ((a || b) || c);
return l;
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Let_3_a_bc) {
RUN_TEST(R"(
fn f(a : bool, b : bool, c : bool) -> bool {
let l = (a || (b || c));
return l;
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Call_2) {
RUN_TEST(R"(
fn a() -> bool {
return true;
}
fn b() -> bool {
return true;
}
fn f() -> bool {
return (a() || b());
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Call_3_ab_c) {
RUN_TEST(R"(
fn a() -> bool {
return true;
}
fn b() -> bool {
return true;
}
fn c() -> bool {
return true;
}
fn f() -> bool {
return ((a() || b()) || c());
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Or_Call_3_a_bc) {
RUN_TEST(R"(
fn a() -> bool {
return true;
}
fn b() -> bool {
return true;
}
fn c() -> bool {
return true;
}
fn f() -> bool {
return (a() || (b() || c()));
}
)");
}
TEST_F(IRToProgramRoundtripTest, ShortCircuit_Mixed) {
RUN_TEST(R"(
fn b() -> bool {
return true;
}
fn d() -> bool {
return true;
}
fn f(a : bool, c : bool) -> bool {
let l = ((a || b()) && (c || d()));
return l;
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Assignment
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Assign_ArrayOfArrayOfArrayAccess_123456) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
v[e(1i)][e(2i)][e(3i)] = v[e(4i)][e(5i)][e(6i)];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Assign_ArrayOfArrayOfArrayAccess_261345) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_2 = e(2i);
let v_3 = e(6i);
v[e(1i)][v_2][e(3i)] = v[e(4i)][e(5i)][v_3];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Assign_ArrayOfArrayOfArrayAccess_532614) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_2 = e(5i);
let v_3 = e(3i);
let v_4 = e(2i);
let v_5 = e(6i);
v[e(1i)][v_4][v_3] = v[e(4i)][v_2][v_5];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Assign_ArrayOfMatrixAccess_123456) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
v[e(1i)][e(2i)][e(3i)] = v[e(4i)][e(5i)][e(6i)];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Assign_ArrayOfMatrixAccess_261345) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_2 = e(2i);
let v_3 = e(6i);
v[e(1i)][v_2][e(3i)] = v[e(4i)][e(5i)][v_3];
}
)");
}
TEST_F(IRToProgramRoundtripTest, Assign_ArrayOfMatrixAccess_532614) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_2 = e(5i);
let v_3 = e(3i);
let v_4 = e(2i);
let v_5 = e(6i);
v[e(1i)][v_4][v_3] = v[e(4i)][v_2][v_5];
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Compound assignment
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Increment) {
RUN_TEST(R"(
fn f() {
var v : i32;
v++;
}
)",
R"(
fn f() {
var v : i32;
v = (v + 1i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Decrement) {
RUN_TEST(R"(
fn f() {
var v : i32;
v++;
}
)",
R"(
fn f() {
var v : i32;
v = (v + 1i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Add) {
RUN_TEST(R"(
fn f() {
var v : i32;
v += 8i;
}
)",
R"(
fn f() {
var v : i32;
v = (v + 8i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Subtract) {
RUN_TEST(R"(
fn f() {
var v : i32;
v -= 8i;
}
)",
R"(
fn f() {
var v : i32;
v = (v - 8i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Multiply) {
RUN_TEST(R"(
fn f() {
var v : i32;
v *= 8i;
}
)",
R"(
fn f() {
var v : i32;
v = (v * 8i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Divide) {
RUN_TEST(R"(
fn f() {
var v : i32;
v /= 8i;
}
)",
R"(
fn f() {
var v : i32;
v = (v / 8i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_Xor) {
RUN_TEST(R"(
fn f() {
var v : i32;
v ^= 8i;
}
)",
R"(
fn f() {
var v : i32;
v = (v ^ 8i);
}
)");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_ArrayOfArrayOfArrayAccess_123456) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
v[e(1i)][e(2i)][e(3i)] += v[e(4i)][e(5i)][e(6i)];
}
)",
R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_1 = &(v[e(1i)][e(2i)][e(3i)]);
let v_2 = v[e(4i)][e(5i)][e(6i)];
*(v_1) = (*(v_1) + v_2);
})");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_ArrayOfArrayOfArrayAccess_261345) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_2 = e(2i);
let v_3 = e(6i);
v[e(1i)][v_2][e(3i)] += v[e(4i)][e(5i)][v_3];
}
)",
R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_2 = e(2i);
let v_3 = e(6i);
let v_1 = &(v[e(1i)][v_2][e(3i)]);
let v_4 = v[e(4i)][e(5i)][v_3];
*(v_1) = (*(v_1) + v_4);
})");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_ArrayOfArrayOfArrayAccess_532614) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_2 = e(5i);
let v_3 = e(3i);
let v_4 = e(2i);
let v_5 = e(6i);
v[e(1i)][v_4][v_3] += v[e(4i)][v_2][v_5];
}
)",
R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<array<array<i32, 5u>, 5u>, 5u>;
let v_2 = e(5i);
let v_3 = e(3i);
let v_4 = e(2i);
let v_5 = e(6i);
let v_1 = &(v[e(1i)][v_4][v_3]);
let v_6 = v[e(4i)][v_2][v_5];
*(v_1) = (*(v_1) + v_6);
})");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_ArrayOfMatrixAccess_123456) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
v[e(1i)][e(2i)][e(3i)] += v[e(4i)][e(5i)][e(6i)];
}
)",
R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_1 = &(v[e(1i)][e(2i)]);
let v_2 = e(3i);
let v_3 = v[e(4i)][e(5i)][e(6i)];
(*(v_1))[v_2] = ((*(v_1))[v_2] + v_3);
})");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_ArrayOfMatrixAccess_261345) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_2 = e(2i);
let v_3 = e(6i);
v[e(1i)][v_2][e(3i)] += v[e(4i)][e(5i)][v_3];
}
)",
R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_2 = e(2i);
let v_3 = e(6i);
let v_1 = &(v[e(1i)][v_2]);
let v_4 = e(3i);
let v_5 = v[e(4i)][e(5i)][v_3];
(*(v_1))[v_4] = ((*(v_1))[v_4] + v_5);
})");
}
TEST_F(IRToProgramRoundtripTest, CompoundAssign_ArrayOfMatrixAccess_532614) {
RUN_TEST(R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_2 = e(5i);
let v_3 = e(3i);
let v_4 = e(2i);
let v_5 = e(6i);
v[e(1i)][v_4][v_3] += v[e(4i)][v_2][v_5];
}
)",
R"(
fn e(i : i32) -> i32 {
return i;
}
fn f() {
var v : array<mat3x4<f32>, 5u>;
let v_2 = e(5i);
let v_3 = e(3i);
let v_4 = e(2i);
let v_5 = e(6i);
let v_1 = &(v[e(1i)][v_4]);
let v_6 = v[e(4i)][v_2][v_5];
(*(v_1))[v_3] = ((*(v_1))[v_3] + v_6);
})");
}
////////////////////////////////////////////////////////////////////////////////
// Phony Assignment
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, PhonyAssign_PrivateVar) {
RUN_TEST(R"(
var<private> p : i32;
fn f() {
_ = p;
}
)");
}
TEST_F(IRToProgramRoundtripTest, PhonyAssign_FunctionVar) {
RUN_TEST(R"(
fn f() {
var i : i32;
_ = i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, PhonyAssign_FunctionLet) {
RUN_TEST(R"(
fn f() {
let i : i32 = 42i;
_ = i;
}
)",
R"(
fn f() {
let i = 42i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, PhonyAssign_HandleVar) {
RUN_TEST(R"(
@group(0) @binding(0) var t : texture_2d<f32>;
fn f() {
_ = t;
}
)");
}
TEST_F(IRToProgramRoundtripTest, PhonyAssign_Constant) {
RUN_TEST(R"(
fn f() {
_ = 42i;
}
)",
R"(
fn f() {
}
)");
}
TEST_F(IRToProgramRoundtripTest, PhonyAssign_Call) {
RUN_TEST(R"(
fn v() -> i32 {
return 42;
}
fn f() {
_ = v();
}
)",
R"(
fn v() -> i32 {
return 42i;
}
fn f() {
v();
}
)");
}
TEST_F(IRToProgramRoundtripTest, PhonyAssign_Conversion) {
RUN_TEST(R"(
fn f() {
let i = 42i;
_ = u32(i);
}
)",
R"(
fn f() {
let i = 42i;
_ = u32(i);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// let
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, LetUsedOnce) {
RUN_TEST(R"(
fn f(i : u32) -> u32 {
let v = ~(i);
return v;
}
)");
}
TEST_F(IRToProgramRoundtripTest, LetUsedTwice) {
RUN_TEST(R"(
fn f(i : i32) -> i32 {
let v = (i * 2i);
return (v + v);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Module-scope var
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_i32) {
RUN_TEST(R"(
var<private> v : i32 = 1i;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_u32) {
RUN_TEST(R"(
var<private> v : u32 = 1u;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_f32) {
RUN_TEST(R"(
var<private> v : f32 = 1.0f;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_f16) {
RUN_TEST(R"(
enable f16;
var<private> v : f16 = 1.0h;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_bool) {
RUN_TEST(R"(
var<private> v : bool = true;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_array_NoArgs) {
RUN_TEST(R"(
var<private> v : array<i32, 4u> = array<i32, 4u>();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_array_Zero) {
RUN_TEST(R"(
var<private> v : array<i32, 4u> = array<i32, 4u>(0i, 0i, 0i, 0i);
var<private> v : array<i32, 4u> = array<i32, 4u>();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_array_SameValue) {
RUN_TEST(R"(
var<private> v : array<i32, 4u> = array<i32, 4u>(4i, 4i, 4i, 4i);
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_array_DifferentValues) {
RUN_TEST(R"(
var<private> v : array<i32, 4u> = array<i32, 4u>(1i, 2i, 3i, 4i);
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_struct_NoArgs) {
RUN_TEST(R"(
struct S {
i : i32,
u : u32,
f : f32,
}
var<private> s : S = S();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_struct_Zero) {
RUN_TEST(R"(
struct S {
i : i32,
u : u32,
f : f32,
}
var<private> s : S = S(0i, 0u, 0f);
)",
R"(
struct S {
i : i32,
u : u32,
f : f32,
}
var<private> s : S = S();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_struct_SameValue) {
RUN_TEST(R"(
struct S {
a : i32,
b : i32,
c : i32,
}
var<private> s : S = S(4i, 4i, 4i);
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_struct_DifferentValues) {
RUN_TEST(R"(
struct S {
a : i32,
b : i32,
c : i32,
}
var<private> s : S = S(1i, 2i, 3i);
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_vec3f_NoArgs) {
RUN_TEST(R"(
var<private> v : vec3<f32> = vec3<f32>();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_vec3f_Zero) {
RUN_TEST(R"(
var<private> v : vec3<f32> = vec3<f32>(0f);",
"var<private> v : vec3<f32> = vec3<f32>();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_vec3f_Splat) {
RUN_TEST(R"(
var<private> v : vec3<f32> = vec3<f32>(1.0f);
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_vec3f_Scalars) {
RUN_TEST(R"(
var<private> v : vec3<f32> = vec3<f32>(1.0f, 2.0f, 3.0f);
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_mat2x3f_NoArgs) {
RUN_TEST(R"(
var<private> v : mat2x3<f32> = mat2x3<f32>();
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_mat2x3f_Scalars_SameValue) {
RUN_TEST(R"(
var<private> v : mat2x3<f32> = mat2x3<f32>(4.0f, 4.0f, 4.0f, 4.0f, 4.0f, 4.0f);
var<private> v : mat2x3<f32> = mat2x3<f32>(vec3<f32>(4.0f), vec3<f32>(4.0f));
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_mat2x3f_Scalars) {
RUN_TEST(R"(
var<private> v : mat2x3<f32> = mat2x3<f32>(1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f);
var<private> v : mat2x3<f32> = mat2x3<f32>(vec3<f32>(1.0f, 2.0f, 3.0f), vec3<f32>(4.0f, 5.0f, 6.0f));
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_mat2x3f_Columns) {
RUN_TEST(
R"(
var<private> v : mat2x3<f32> = mat2x3<f32>(vec3<f32>(1.0f, 2.0f, 3.0f), vec3<f32>(4.0f, 5.0f, 6.0f));
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Private_mat2x3f_Columns_SameValue) {
RUN_TEST(R"(
var<private> v : mat2x3<f32> = mat2x3<f32>(vec3<f32>(4.0f, 4.0f, 4.0f), vec3<f32>(4.0f, 4.0f, 4.0f));
var<private> v : mat2x3<f32> = mat2x3<f32>(vec3<f32>(4.0f), vec3<f32>(4.0f));
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Uniform_vec4i) {
RUN_TEST(R"(
@group(10) @binding(20) var<uniform> v : vec4<i32>;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_StorageRead_u32) {
RUN_TEST(R"(
@group(10) @binding(20) var<storage, read> v : u32;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_StorageReadWrite_i32) {
RUN_TEST(R"(
@group(10) @binding(20) var<storage, read_write> v : i32;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Handle_Texture2D) {
RUN_TEST(R"(
@group(0) @binding(0) var t : texture_2d<f32>;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Handle_Sampler) {
RUN_TEST(R"(
@group(0) @binding(0) var s : sampler;
)");
}
TEST_F(IRToProgramRoundtripTest, ModuleScopeVar_Handle_SamplerCmp) {
RUN_TEST(R"(
@group(0) @binding(0) var s : sampler_comparison;
)");
}
////////////////////////////////////////////////////////////////////////////////
// Function-scope var
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, FunctionScopeVar_i32) {
RUN_TEST(R"(
fn f() {
var i : i32;
}
)");
}
TEST_F(IRToProgramRoundtripTest, FunctionScopeVar_i32_InitLiteral) {
RUN_TEST(R"(
fn f() {
var i : i32 = 42i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, FunctionScopeVar_Chained) {
RUN_TEST(R"(
fn f() {
var a : i32 = 42i;
var b : i32 = a;
var c : i32 = b;
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Function-scope let
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, FunctionScopeLet_i32) {
RUN_TEST(R"(
fn f(i : i32) -> i32 {
let a = (42i + i);
let b = (24i + i);
let c = (a + b);
return c;
}
)");
}
TEST_F(IRToProgramRoundtripTest, FunctionScopeLet_ptr) {
RUN_TEST(R"(
fn f() -> i32 {
var a : array<i32, 3u>;
let b = &(a[1i]);
let c = *(b);
return c;
}
)");
}
TEST_F(IRToProgramRoundtripTest, FunctionScopeLet_NoConstEvalError) {
// Tests that 'a' and 'b' are preserved as a let.
// If their constant values were inlined, then the initializer for 'c' would be treated as a
// constant expression instead of the authored runtime expression. Evaluating '1 / 0' as a
// constant expression is a WGSL validation error.
RUN_TEST(R"(
fn f() {
let a = 1i;
let b = 0i;
let c = (a / b);
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// If
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, If_CallFn) {
RUN_TEST(R"(
fn a() {
}
fn f(cond : bool) {
if (cond) {
a();
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_Return) {
RUN_TEST(R"(
fn f(cond : bool) {
if (cond) {
return;
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_Return_i32) {
RUN_TEST(R"(
fn f() -> i32 {
var cond : bool = true;
if (cond) {
return 42i;
}
return 10i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_CallFn_Else_CallFn) {
RUN_TEST(R"(
fn a() {
}
fn b() {
}
fn f(cond : bool) {
if (cond) {
a();
} else {
b();
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_Return_f32_Else_Return_f32) {
RUN_TEST(R"(
fn f() -> f32 {
var cond : bool = true;
if (cond) {
return 1.0f;
} else {
return 2.0f;
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_Return_u32_Else_CallFn) {
RUN_TEST(R"(
fn a() {
}
fn b() {
}
fn f() -> u32 {
var cond : bool = true;
if (cond) {
return 1u;
} else {
a();
}
b();
return 2u;
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_CallFn_ElseIf_CallFn) {
RUN_TEST(R"(
fn a() {
}
fn b() {
}
fn c() {
}
fn f() {
var cond : bool = true;
if (cond) {
a();
} else if (false) {
b();
}
c();
}
)");
}
TEST_F(IRToProgramRoundtripTest, If_Else_Chain) {
RUN_TEST(R"(
fn x(i : i32) -> bool {
return true;
}
fn f(a : bool, b : bool, c : bool, d : bool) {
if (a) {
x(0i);
} else if (b) {
x(1i);
} else if (c) {
x(2i);
} else {
x(3i);
}
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Switch
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Switch_Default) {
RUN_TEST(R"(
fn a() {
}
fn f() {
var v : i32 = 42i;
switch(v) {
default: {
a();
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Switch_3_Cases) {
RUN_TEST(R"(
fn a() {
}
fn b() {
}
fn c() {
}
fn f() {
var v : i32 = 42i;
switch(v) {
case 0i: {
a();
}
case 1i, default: {
b();
}
case 2i: {
c();
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Switch_3_Cases_AllReturn) {
RUN_TEST(R"(
fn a() {
}
fn f() {
var v : i32 = 42i;
switch(v) {
case 0i: {
return;
}
case 1i, default: {
return;
}
case 2i: {
return;
}
}
a();
}
)",
R"(
fn a() {
}
fn f() {
var v : i32 = 42i;
switch(v) {
case 0i: {
return;
}
case 1i, default: {
return;
}
case 2i: {
return;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Switch_Nested) {
RUN_TEST(R"(
fn a() {
}
fn b() {
}
fn c() {
}
fn f() {
var v1 : i32 = 42i;
var v2 : i32 = 24i;
switch(v1) {
case 0i: {
a();
}
case 1i, default: {
switch(v2) {
case 0i: {
}
case 1i, default: {
return;
}
}
}
case 2i: {
c();
}
}
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// For
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, For_Empty) {
RUN_TEST(R"(
fn f() {
for(var i : i32 = 0i; (i < 5i); i = (i + 1i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_Empty_NoInit) {
RUN_TEST(R"(
fn f() {
var i : i32 = 0i;
for(; (i < 5i); i = (i + 1i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_Empty_NoCond) {
RUN_TEST(R"(
fn f() {
for(var i : i32 = 0i; ; i = (i + 1i)) {
break;
}
}
)",
R"(
fn f() {
{
var i : i32 = 0i;
loop {
break;
continuing {
i = (i + 1i);
}
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_Empty_NoCont) {
RUN_TEST(R"(
fn f() {
for(var i : i32 = 0i; (i < 5i); ) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_ComplexBody) {
RUN_TEST(R"(
fn a(v : i32) -> bool {
return (v == 1i);
}
fn f() -> i32 {
for(var i : i32 = 0i; (i < 5i); i = (i + 1i)) {
if (a(42i)) {
return 1i;
} else {
return 2i;
}
}
return 3i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_ComplexBody_NoInit) {
RUN_TEST(R"(
fn a(v : i32) -> bool {
return (v == 1i);
}
fn f() -> i32 {
var i : i32 = 0i;
for(; (i < 5i); i = (i + 1i)) {
if (a(42i)) {
return 1i;
} else {
return 2i;
}
}
return 3i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_ComplexBody_NoCond) {
RUN_TEST(R"(
fn a(v : i32) -> bool {
return (v == 1i);
}
fn f() -> i32 {
for(var i : i32 = 0i; ; i = (i + 1i)) {
if (a(42i)) {
return 1i;
} else {
return 2i;
}
}
}
)",
R"(
fn a(v : i32) -> bool {
return (v == 1i);
}
fn f() -> i32 {
{
var i : i32 = 0i;
loop {
if (a(42i)) {
return 1i;
} else {
return 2i;
}
continuing {
i = (i + 1i);
}
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_ComplexBody_NoCont) {
RUN_TEST(R"(
fn a(v : i32) -> bool {
return (v == 1i);
}
fn f() -> i32 {
for(var i : i32 = 0i; (i < 5i); ) {
if (a(42i)) {
return 1i;
} else {
return 2i;
}
}
return 3i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_CallInInitCondCont) {
RUN_TEST(R"(
fn n(v : i32) -> i32 {
return (v + 1i);
}
fn f() {
for(var i : i32 = n(0i); (i < n(1i)); i = n(i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_AssignAsInit) {
RUN_TEST(R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i = 0i; (i < 10i); i = (i + 1i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_CompoundAssignAsInit) {
RUN_TEST(R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i += 0i; (i < 10i); i = (i + 1i)) {
}
}
)",
R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i = (i + 0i); (i < 10i); i = (i + 1i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_IncrementAsInit) {
RUN_TEST(R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i++; (i < 10i); i = (i + 1i)) {
}
}
)",
R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i = (i + 1i); (i < 10i); i = (i + 1i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_DecrementAsInit) {
RUN_TEST(R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i--; (i < 10i); i = (i + 1i)) {
}
}
)",
R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(i = (i - 1i); (i < 10i); i = (i + 1i)) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, For_CallAsInit) {
RUN_TEST(R"(
fn n() {
}
fn f() {
var i : i32 = 0i;
for(n(); (i < 10i); i = (i + 1i)) {
}
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// While
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, While_Empty) {
RUN_TEST(R"(
fn f() {
while(true) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, While_Cond) {
RUN_TEST(R"(
fn f(cond : bool) {
while(cond) {
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, While_Break) {
RUN_TEST(R"(
fn f() {
while(true) {
break;
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, While_IfBreak) {
RUN_TEST(R"(
fn f(cond : bool) {
while(true) {
if (cond) {
break;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, While_IfReturn) {
RUN_TEST(R"(
fn f(cond : bool) {
while(true) {
if (cond) {
return;
}
}
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Loop
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Loop_Break) {
RUN_TEST(R"(
fn f() {
loop {
break;
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_IfBreak) {
RUN_TEST(R"(
fn f(cond : bool) {
loop {
if (cond) {
break;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_IfReturn) {
RUN_TEST(R"(
fn f(cond : bool) {
loop {
if (cond) {
return;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_IfContinuing) {
RUN_TEST(R"(
fn f() {
var cond : bool = false;
loop {
if (cond) {
return;
}
continuing {
cond = true;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_VarsDeclaredOutsideAndInside) {
RUN_TEST(R"(
fn f() {
var b : i32 = 1i;
loop {
var a : i32 = 2i;
if ((a == b)) {
return;
}
continuing {
b = (a + b);
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_BreakIf_EmptyBody) {
RUN_TEST(R"(
fn f() {
loop {
continuing {
break if false;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_BreakIf_NotFalse) {
RUN_TEST(R"(
fn f() {
loop {
if (false) {
} else {
break;
}
continuing {
break if !false;
}
}
}
)",
R"(
fn f() {
loop {
if (!(false)) {
break;
}
continuing {
break if true;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_BreakIf_NotTrue) {
RUN_TEST(R"(
fn f() {
loop {
if (false) {
} else {
break;
}
continuing {
break if !true;
}
}
}
)",
R"(
fn f() {
loop {
if (!(false)) {
break;
}
continuing {
break if false;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Loop_WithReturn) {
RUN_TEST(R"(
fn f() {
loop {
let i = 42i;
return;
}
}
)");
}
////////////////////////////////////////////////////////////////////////////////
// Shadowing tests
////////////////////////////////////////////////////////////////////////////////
TEST_F(IRToProgramRoundtripTest, Shadow_f32_With_Fn) {
RUN_TEST(R"(
fn f32() {
var v = mat4x4f();
}
)",
R"(
fn f32_1() {
var v : mat4x4<f32> = mat4x4<f32>();
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_f32_With_Struct) {
RUN_TEST(R"(
struct f32 {
v : i32,
}
fn f(s : f32) {
let f = vec2f(1.0f);
}
)",
R"(
struct f32_1 {
v : i32,
}
fn f(s : f32_1) {
let f_1 = vec2<f32>(1.0f);
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_f32_With_ModVar) {
RUN_TEST(R"(
var<private> f32 : vec2f = vec2f(0.0f, 1.0f);
)",
R"(
var<private> f32_1 : vec2<f32> = vec2<f32>(0.0f, 1.0f);
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_f32_With_ModVar2) {
RUN_TEST(R"(
var<private> f32 : i32 = 1i;
var<private> v = vec2(1.0).x;
)",
R"(
var<private> f32_1 : i32 = 1i;
var<private> v : f32 = 1.0f;
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_f32_With_Alias) {
RUN_TEST(R"(
alias f32 = i32;
fn f() {
var v = vec3(1.0f, 2.0f, 3.0f);
}
)",
R"(
fn f() {
var v : vec3<f32> = vec3<f32>(1.0f, 2.0f, 3.0f);
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_Struct_With_FnVar) {
RUN_TEST(R"(
struct S {
i : i32,
}
fn f() -> i32 {
var S : S = S();
return S.i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_Struct_With_Param) {
RUN_TEST(R"(
struct S {
i : i32,
}
fn f(S : S) -> i32 {
return S.i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_ModVar_With_FnVar) {
RUN_TEST(R"(
var<private> i : i32 = 1i;
fn f() -> i32 {
i = (i + 1i);
var i : i32 = (i + 1i);
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_ModVar_With_FnLet) {
RUN_TEST(R"(
var<private> i : i32 = 1i;
fn f() -> i32 {
i = (i + 1i);
let i = (i + 1i);
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_IfVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
if (true) {
i = (i + 1i);
var i : i32 = (i + 1i);
i = (i + 1i);
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_IfLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
if (true) {
i = (i + 1i);
let i = (i + 1i);
return i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_WhileVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
while((i < 4i)) {
var i : i32 = (i + 1i);
return i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_WhileLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
while((i < 4i)) {
let i = (i + 1i);
return i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_ForInitVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
for(var i : f32 = 0.0f; (i < 4.0f); ) {
let j = i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_ForInitLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
for(let i = 0.0f; (i < 4.0f); ) {
let j = i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_ForBodyVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
for(var x : i32 = 0i; (i < 4i); ) {
var i : i32 = (i + 1i);
return i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_ForBodyLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
for(var x : i32 = 0i; (i < 4i); ) {
let i = (i + 1i);
return i;
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_LoopBodyVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
loop {
if ((i == 2i)) {
break;
}
var i : i32 = (i + 1i);
if ((i == 3i)) {
break;
}
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_LoopBodyLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
loop {
if ((i == 2i)) {
break;
}
let i = (i + 1i);
if ((i == 3i)) {
break;
}
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_LoopContinuingVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
loop {
if ((i == 2i)) {
break;
}
continuing {
var i : i32 = (i + 1i);
break if (i > 2i);
}
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_LoopContinuingLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
loop {
if ((i == 2i)) {
break;
}
continuing {
let i = (i + 1i);
break if (i > 2i);
}
}
return i;
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_SwitchCaseVar) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
switch(i) {
case 0i: {
return i;
}
case 1i: {
var i : i32 = (i + 1i);
return i;
}
default: {
return i;
}
}
}
)");
}
TEST_F(IRToProgramRoundtripTest, Shadow_FnVar_With_SwitchCaseLet) {
RUN_TEST(R"(
fn f() -> i32 {
var i : i32;
switch(i) {
case 0i: {
return i;
}
case 1i: {
let i = (i + 1i);
return i;
}
default: {
return i;
}
}
}
)");
}
} // namespace
} // namespace tint::wgsl