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transform: remove VarForDynamicIndex transform. 

Dynamic indexes are limited to references to matrices and arrays
https://github.com/gpuweb/gpuweb/pull/1801

Bug: tint:867
Change-Id: I114daa053c8a4ffd23ce784ac4538567a551cc21
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/54701
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Auto-Submit: Sarah Mashayekhi <sarahmashay@google.com>
This commit is contained in:
Sarah 2021-06-16 17:42:53 +00:00 committed by Tint LUCI CQ
parent 4b1c9de503
commit b6fdcc54df
24 changed files with 92 additions and 365 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/BUILD.gn
View File

@ -571,8 +571,6 @@ libtint_source_set("libtint_core_all_src") {
"transform/single_entry_point.h",
"transform/transform.cc",
"transform/transform.h",
"transform/var_for_dynamic_index.cc",
"transform/var_for_dynamic_index.h",
"transform/vertex_pulling.cc",
"transform/vertex_pulling.h",
"transform/wrap_arrays_in_structs.cc",

3
src/CMakeLists.txt
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@ -296,8 +296,6 @@ set(TINT_LIB_SRCS
transform/single_entry_point.h
transform/transform.cc
transform/transform.h
transform/var_for_dynamic_index.cc
transform/var_for_dynamic_index.h
transform/vertex_pulling.cc
transform/vertex_pulling.h
transform/wrap_arrays_in_structs.cc
@ -859,7 +857,6 @@ if(${TINT_BUILD_TESTS})
transform/simplify_test.cc
transform/single_entry_point_test.cc
transform/test_helper.h
transform/var_for_dynamic_index_test.cc
transform/vertex_pulling_test.cc
transform/wrap_arrays_in_structs_test.cc
)

2
src/transform/spirv.cc
View File

@ -30,7 +30,6 @@
#include "src/transform/inline_pointer_lets.h"
#include "src/transform/manager.h"
#include "src/transform/simplify.h"
#include "src/transform/var_for_dynamic_index.h"
TINT_INSTANTIATE_TYPEINFO(tint::transform::Spirv::Config);
@ -45,7 +44,6 @@ Output Spirv::Run(const Program* in, const DataMap& data) {
manager.Add<InlinePointerLets>(); // Required for arrayLength()
manager.Add<Simplify>(); // Required for arrayLength()
manager.Add<ExternalTextureTransform>();
manager.Add<VarForDynamicIndex>();
auto transformedInput = manager.Run(in, data);
auto* cfg = data.Get<Config>();

80
src/transform/var_for_dynamic_index.cc
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@ -1,80 +0,0 @@
// 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/var_for_dynamic_index.h"
#include <utility>
#include "src/program_builder.h"
#include "src/sem/array.h"
#include "src/sem/block_statement.h"
#include "src/sem/expression.h"
#include "src/sem/statement.h"
namespace tint {
namespace transform {
VarForDynamicIndex::VarForDynamicIndex() = default;
VarForDynamicIndex::~VarForDynamicIndex() = default;
Output VarForDynamicIndex::Run(const Program* in, const DataMap&) {
ProgramBuilder out;
CloneContext ctx(&out, in);
for (auto* node : in->ASTNodes().Objects()) {
if (auto* access_expr = node->As<ast::ArrayAccessorExpression>()) {
// Found an array accessor expression
auto* index_expr = access_expr->idx_expr();
auto* indexed_expr = access_expr->array();
if (index_expr->Is<ast::ScalarConstructorExpression>()) {
// Index expression is a literal value. As this isn't a dynamic index,
// we can ignore this.
continue;
}
auto* indexed = ctx.src->Sem().Get(indexed_expr);
if (!indexed->Type()->IsAnyOf<sem::Array, sem::Matrix>()) {
// This transform currently only cares about array and matrices.
continue;
}
auto* stmt = indexed->Stmt(); // Statement that owns the expression
auto* block = stmt->Block(); // Block that owns the statement
// Construct a `var` declaration to hold the value in memory.
auto* ty = CreateASTTypeFor(&ctx, indexed->Type());
auto var_name = ctx.dst->Symbols().New("var_for_index");
auto* var_decl = ctx.dst->Decl(ctx.dst->Var(
var_name, ty, ast::StorageClass::kNone, ctx.Clone(indexed_expr)));
// Insert the `var` declaration before the statement that performs the
// indexing. Note that for indexing chains, AST node ordering guarantees
// that the inner-most index variable will be placed first in the block.
ctx.InsertBefore(block->Declaration()->statements(), stmt->Declaration(),
var_decl);
// Replace the original index expression with the new `var`.
ctx.Replace(indexed_expr, ctx.dst->Expr(var_name));
}
}
ctx.Clone();
return Output(Program(std::move(out)));
}
} // namespace transform
} // namespace tint

48
src/transform/var_for_dynamic_index.h
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@ -1,48 +0,0 @@
// 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.
#ifndef SRC_TRANSFORM_VAR_FOR_DYNAMIC_INDEX_H_
#define SRC_TRANSFORM_VAR_FOR_DYNAMIC_INDEX_H_
#include <string>
#include <unordered_map>
#include "src/transform/transform.h"
namespace tint {
namespace transform {
/// A transform that extracts array and matrix values that are dynamically
/// indexed to a temporary `var` local before performing the index. This
/// transform is used by the SPIR-V writer as there is no SPIR-V instruction
/// that can dynamically index a non-pointer composite.
class VarForDynamicIndex : public Transform {
public:
/// Constructor
VarForDynamicIndex();
/// Destructor
~VarForDynamicIndex() override;
/// Runs the transform on `program`, returning the transformation result.
/// @param program the source program to transform
/// @param data optional extra transform-specific input data
/// @returns the transformation result
Output Run(const Program* program, const DataMap& data = {}) override;
};
} // namespace transform
} // namespace tint
#endif // SRC_TRANSFORM_VAR_FOR_DYNAMIC_INDEX_H_

121
src/transform/var_for_dynamic_index_test.cc
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@ -1,121 +0,0 @@
// 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/var_for_dynamic_index.h"
#include "src/transform/test_helper.h"
namespace tint {
namespace transform {
namespace {
using VarForDynamicIndexTest = TransformTest;
TEST_F(VarForDynamicIndexTest, EmptyModule) {
auto* src = "";
auto* expect = "";
auto got = Run<VarForDynamicIndex>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(VarForDynamicIndexTest, ArrayIndexDynamic) {
auto* src = R"(
fn f() {
var i : i32;
let p : array<i32, 4> = array<i32, 4>(1, 2, 3, 4);
let x : i32 = p[i];
}
)";
auto* expect = R"(
fn f() {
var i : i32;
let p : array<i32, 4> = array<i32, 4>(1, 2, 3, 4);
var var_for_index : array<i32, 4> = p;
let x : i32 = var_for_index[i];
}
)";
auto got = Run<VarForDynamicIndex>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(VarForDynamicIndexTest, ArrayIndexDynamicChain) {
auto* src = R"(
fn f() {
var i : i32;
var j : i32;
let p : array<array<i32, 2>, 2> = array<array<i32, 2>, 2>(array<i32, 2>(1, 2), array<i32, 2>(3, 4));
let x : i32 = p[i][j];
}
)";
// TODO(bclayton): Optimize this case:
// This output is not as efficient as it could be.
// We only actually need to hoist the inner-most array to a `var`
// (`var_for_index`), as later indexing operations will be working with
// references, not values.
auto* expect = R"(
fn f() {
var i : i32;
var j : i32;
let p : array<array<i32, 2>, 2> = array<array<i32, 2>, 2>(array<i32, 2>(1, 2), array<i32, 2>(3, 4));
var var_for_index : array<array<i32, 2>, 2> = p;
var var_for_index_1 : array<i32, 2> = var_for_index[i];
let x : i32 = var_for_index_1[j];
}
)";
auto got = Run<VarForDynamicIndex>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(VarForDynamicIndexTest, ArrayIndexLiteral) {
auto* src = R"(
fn f() {
let p : array<i32, 4> = array<i32, 4>(1, 2, 3, 4);
let x : i32 = p[1];
}
)";
auto* expect = src;
auto got = Run<VarForDynamicIndex>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(VarForDynamicIndexTest, ArrayIndexLiteralChain) {
auto* src = R"(
fn f() {
let p : array<array<i32, 2>, 2> = array<array<i32, 2>, 2>(array<i32, 2>(1, 2), array<i32, 2>(3, 4));
let x : i32 = p[0][1];
}
)";
auto* expect = src;
auto got = Run<VarForDynamicIndex>(src);
EXPECT_EQ(expect, str(got));
}
} // namespace
} // namespace transform
} // namespace tint

11
src/writer/spirv/builder.cc
View File

@ -1077,17 +1077,6 @@ uint32_t Builder::GenerateAccessorExpression(ast::Expression* expr) {
}
info.source_type = TypeOf(source);
if (auto* access = accessors[0]->As<ast::ArrayAccessorExpression>()) {
auto* array = TypeOf(access->array())->As<sem::Array>();
bool literal_index =
array && access->idx_expr()->Is<ast::ScalarConstructorExpression>();
if (array && !literal_index) {
TINT_ICE(builder_.Diagnostics())
<< "Dynamic index on array value should have been promoted to "
"storage with the VarForDynamicIndex transform";
}
}
for (auto* accessor : accessors) {
if (auto* array = accessor->As<ast::ArrayAccessorExpression>()) {
if (!GenerateArrayAccessor(array, &info)) {

48
src/writer/spirv/builder_accessor_expression_test.cc
View File

@ -937,11 +937,11 @@ TEST_F(BuilderTest, ArrayAccessor_Array_Literal) {
}
TEST_F(BuilderTest, ArrayAccessor_Array_Dynamic) {
// let a : array<f32, 3>;
// var a : array<f32, 3>;
// idx : i32
// a[idx]
auto* var = Const("a", ty.array<f32, 3>(),
auto* var = Var("a", ty.array<f32, 3>(),
Construct(ty.array<f32, 3>(), 0.0f, 0.5f, 1.0f));
auto* idx = Var("idx", ty.i32());
@ -963,21 +963,21 @@ TEST_F(BuilderTest, ArrayAccessor_Array_Dynamic) {
%10 = OpConstant %6 0.5
%11 = OpConstant %6 1
%12 = OpConstantComposite %5 %9 %10 %11
%15 = OpTypeInt 32 1
%14 = OpTypePointer Function %15
%16 = OpConstantNull %15
%18 = OpTypePointer Function %5
%19 = OpConstantNull %5
%14 = OpTypePointer Function %5
%15 = OpConstantNull %5
%18 = OpTypeInt 32 1
%17 = OpTypePointer Function %18
%19 = OpConstantNull %18
%21 = OpTypePointer Function %6
)");
EXPECT_EQ(DumpInstructions(b.functions()[0].variables()),
R"(%13 = OpVariable %14 Function %16
%17 = OpVariable %18 Function %19
R"(%13 = OpVariable %14 Function %15
%16 = OpVariable %17 Function %19
)");
EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
R"(OpStore %17 %12
%20 = OpLoad %15 %13
%22 = OpAccessChain %21 %17 %20
R"(OpStore %13 %12
%20 = OpLoad %18 %16
%22 = OpAccessChain %21 %13 %20
%23 = OpLoad %6 %22
)");
@ -985,12 +985,12 @@ TEST_F(BuilderTest, ArrayAccessor_Array_Dynamic) {
}
TEST_F(BuilderTest, ArrayAccessor_Matrix_Dynamic) {
// let a : mat2x2<f32>(vec2<f32>(1., 2.), vec2<f32>(3., 4.));
// var a : mat2x2<f32>(vec2<f32>(1., 2.), vec2<f32>(3., 4.));
// idx : i32
// a[idx]
auto* var =
Const("a", ty.mat2x2<f32>(),
Var("a", ty.mat2x2<f32>(),
Construct(ty.mat2x2<f32>(), Construct(ty.vec2<f32>(), 1.f, 2.f),
Construct(ty.vec2<f32>(), 3.f, 4.f)));
@ -1015,21 +1015,21 @@ TEST_F(BuilderTest, ArrayAccessor_Matrix_Dynamic) {
%12 = OpConstant %7 4
%13 = OpConstantComposite %6 %11 %12
%14 = OpConstantComposite %5 %10 %13
%17 = OpTypeInt 32 1
%16 = OpTypePointer Function %17
%18 = OpConstantNull %17
%20 = OpTypePointer Function %5
%21 = OpConstantNull %5
%16 = OpTypePointer Function %5
%17 = OpConstantNull %5
%20 = OpTypeInt 32 1
%19 = OpTypePointer Function %20
%21 = OpConstantNull %20
%23 = OpTypePointer Function %6
)");
EXPECT_EQ(DumpInstructions(b.functions()[0].variables()),
R"(%15 = OpVariable %16 Function %18
%19 = OpVariable %20 Function %21
R"(%15 = OpVariable %16 Function %17
%18 = OpVariable %19 Function %21
)");
EXPECT_EQ(DumpInstructions(b.functions()[0].instructions()),
R"(OpStore %19 %14
%22 = OpLoad %17 %15
%24 = OpAccessChain %23 %19 %22
R"(OpStore %15 %14
%22 = OpLoad %20 %18
%24 = OpAccessChain %23 %15 %22
%25 = OpLoad %6 %24
)");

1
test/BUILD.gn
View File

@ -286,7 +286,6 @@ tint_unittests_source_set("tint_unittests_core_src") {
"../src/transform/single_entry_point_test.cc",
"../src/transform/test_helper.h",
"../src/transform/transform_test.cc",
"../src/transform/var_for_dynamic_index_test.cc",
"../src/transform/vertex_pulling_test.cc",
"../src/transform/wrap_arrays_in_structs_test.cc",
"../src/utils/enum_set_test.cc",

4
test/bug/tint/824.wgsl
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@ -6,7 +6,7 @@ struct Output {
[[builtin(vertex_index)]] VertexIndex : u32,
[[builtin(instance_index)]] InstanceIndex : u32) -> Output {
// TODO: remove workaround for Tint unary array access broke
let zv : array<vec2<f32>, 4> = array<vec2<f32>, 4>(
var zv : array<vec2<f32>, 4> = array<vec2<f32>, 4>(
vec2<f32>(0.2, 0.2),
vec2<f32>(0.3, 0.3),
vec2<f32>(-0.1, -0.1),
@ -14,7 +14,7 @@ struct Output {
let z : f32 = zv[InstanceIndex].x;
var output : Output;
output.Position = vec4<f32>(0.5, 0.5, z, 1.0);
let colors : array<vec4<f32>, 4> = array<vec4<f32>, 4>(
var colors : array<vec4<f32>, 4> = array<vec4<f32>, 4>(
vec4<f32>(1.0, 0.0, 0.0, 1.0),
vec4<f32>(0.0, 1.0, 0.0, 1.0),
vec4<f32>(0.0, 0.0, 1.0, 1.0),

4
test/bug/tint/824.wgsl.expected.hlsl
View File

@ -20,11 +20,11 @@ struct tint_array_wrapper_1 {
tint_symbol_2 main(tint_symbol_1 tint_symbol) {
const uint VertexIndex = tint_symbol.VertexIndex;
const uint InstanceIndex = tint_symbol.InstanceIndex;
const tint_array_wrapper zv = {{float2(0.200000003f, 0.200000003f), float2(0.300000012f, 0.300000012f), float2(-0.100000001f, -0.100000001f), float2(1.100000024f, 1.100000024f)}};
tint_array_wrapper zv = {{float2(0.200000003f, 0.200000003f), float2(0.300000012f, 0.300000012f), float2(-0.100000001f, -0.100000001f), float2(1.100000024f, 1.100000024f)}};
const float z = zv.arr[InstanceIndex].x;
Output output = {float4(0.0f, 0.0f, 0.0f, 0.0f), float4(0.0f, 0.0f, 0.0f, 0.0f)};
output.Position = float4(0.5f, 0.5f, z, 1.0f);
const tint_array_wrapper_1 colors = {{float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f)}};
tint_array_wrapper_1 colors = {{float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f)}};
output.color = colors.arr[InstanceIndex];
const tint_symbol_2 tint_symbol_3 = {output.color, output.Position};
return tint_symbol_3;

4
test/bug/tint/824.wgsl.expected.msl
View File

@ -17,11 +17,11 @@ struct tint_array_wrapper_1 {
};
vertex tint_symbol_2 tint_symbol(uint VertexIndex [[vertex_id]], uint InstanceIndex [[instance_id]]) {
tint_array_wrapper const zv = {.arr={float2(0.200000003f, 0.200000003f), float2(0.300000012f, 0.300000012f), float2(-0.100000001f, -0.100000001f), float2(1.100000024f, 1.100000024f)}};
tint_array_wrapper zv = {.arr={float2(0.200000003f, 0.200000003f), float2(0.300000012f, 0.300000012f), float2(-0.100000001f, -0.100000001f), float2(1.100000024f, 1.100000024f)}};
float const z = zv.arr[InstanceIndex].x;
Output output = {};
output.Position = float4(0.5f, 0.5f, z, 1.0f);
tint_array_wrapper_1 const colors = {.arr={float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f)}};
tint_array_wrapper_1 colors = {.arr={float4(1.0f, 0.0f, 0.0f, 1.0f), float4(0.0f, 1.0f, 0.0f, 1.0f), float4(0.0f, 0.0f, 1.0f, 1.0f), float4(1.0f, 1.0f, 1.0f, 1.0f)}};
output.color = colors.arr[InstanceIndex];
tint_symbol_2 const tint_symbol_3 = {.color=output.color, .Position=output.Position};
return tint_symbol_3;

16
test/bug/tint/824.wgsl.expected.spvasm
View File

@ -17,9 +17,9 @@
OpName %tint_symbol_5 "tint_symbol_5"
OpName %tint_symbol_2 "tint_symbol_2"
OpName %main "main"
OpName %var_for_index "var_for_index"
OpName %zv "zv"
OpName %output "output"
OpName %var_for_index_1 "var_for_index_1"
OpName %colors "colors"
OpDecorate %tint_pointsize BuiltIn PointSize
OpDecorate %tint_symbol BuiltIn VertexIndex
OpDecorate %tint_symbol_1 BuiltIn InstanceIndex
@ -88,21 +88,21 @@
OpFunctionEnd
%main = OpFunction %void None %22
%24 = OpLabel
%var_for_index = OpVariable %_ptr_Function__arr_v2float_uint_4 Function %40
%zv = OpVariable %_ptr_Function__arr_v2float_uint_4 Function %40
%output = OpVariable %_ptr_Function_Output Function %48
%var_for_index_1 = OpVariable %_ptr_Function__arr_v4float_uint_4 Function %62
%colors = OpVariable %_ptr_Function__arr_v4float_uint_4 Function %62
OpStore %tint_pointsize %float_1
OpStore %var_for_index %37
OpStore %zv %37
%41 = OpLoad %uint %tint_symbol_1
%44 = OpAccessChain %_ptr_Function_float %var_for_index %41 %uint_0
%44 = OpAccessChain %_ptr_Function_float %zv %41 %uint_0
%45 = OpLoad %float %44
%50 = OpAccessChain %_ptr_Function_v4float %output %uint_0
%52 = OpCompositeConstruct %v4float %float_0_5 %float_0_5 %45 %float_1
OpStore %50 %52
OpStore %var_for_index_1 %59
OpStore %colors %59
%64 = OpAccessChain %_ptr_Function_v4float %output %uint_1
%65 = OpLoad %uint %tint_symbol_1
%66 = OpAccessChain %_ptr_Function_v4float %var_for_index_1 %65
%66 = OpAccessChain %_ptr_Function_v4float %colors %65
%67 = OpLoad %v4float %66
OpStore %64 %67
%69 = OpLoad %Output %output

4
test/bug/tint/824.wgsl.expected.wgsl
View File

@ -7,11 +7,11 @@ struct Output {
[[stage(vertex)]]
fn main([[builtin(vertex_index)]] VertexIndex : u32, [[builtin(instance_index)]] InstanceIndex : u32) -> Output {
let zv : array<vec2<f32>, 4> = array<vec2<f32>, 4>(vec2<f32>(0.200000003, 0.200000003), vec2<f32>(0.300000012, 0.300000012), vec2<f32>(-0.100000001, -0.100000001), vec2<f32>(1.100000024, 1.100000024));
var zv : array<vec2<f32>, 4> = array<vec2<f32>, 4>(vec2<f32>(0.200000003, 0.200000003), vec2<f32>(0.300000012, 0.300000012), vec2<f32>(-0.100000001, -0.100000001), vec2<f32>(1.100000024, 1.100000024));
let z : f32 = zv[InstanceIndex].x;
var output : Output;
output.Position = vec4<f32>(0.5, 0.5, z, 1.0);
let colors : array<vec4<f32>, 4> = array<vec4<f32>, 4>(vec4<f32>(1.0, 0.0, 0.0, 1.0), vec4<f32>(0.0, 1.0, 0.0, 1.0), vec4<f32>(0.0, 0.0, 1.0, 1.0), vec4<f32>(1.0, 1.0, 1.0, 1.0));
var colors : array<vec4<f32>, 4> = array<vec4<f32>, 4>(vec4<f32>(1.0, 0.0, 0.0, 1.0), vec4<f32>(0.0, 1.0, 0.0, 1.0), vec4<f32>(0.0, 0.0, 1.0, 1.0), vec4<f32>(1.0, 1.0, 1.0, 1.0));
output.color = colors[InstanceIndex];
return output;
}

2
test/bug/tint/825.wgsl
View File

@ -1,6 +1,6 @@
fn f() {
var i : i32;
var j : i32;
let m : mat2x2<f32> = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
var m : mat2x2<f32> = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
let f : f32 = m[i][j];
}

2
test/bug/tint/825.wgsl.expected.hlsl
View File

@ -6,6 +6,6 @@ void unused_entry_point() {
void f() {
int i = 0;
int j = 0;
const float2x2 m = float2x2(float2(1.0f, 2.0f), float2(3.0f, 4.0f));
float2x2 m = float2x2(float2(1.0f, 2.0f), float2(3.0f, 4.0f));
const float f = m[i][j];
}

2
test/bug/tint/825.wgsl.expected.msl
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@ -4,7 +4,7 @@ using namespace metal;
void f() {
int i = 0;
int j = 0;
float2x2 const m = float2x2(float2(1.0f, 2.0f), float2(3.0f, 4.0f));
float2x2 m = float2x2(float2(1.0f, 2.0f), float2(3.0f, 4.0f));
float const f = m[i][j];
}

8
test/bug/tint/825.wgsl.expected.spvasm
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@ -11,7 +11,7 @@
OpName %f "f"
OpName %i "i"
OpName %j "j"
OpName %var_for_index "var_for_index"
OpName %m "m"
%void = OpTypeVoid
%1 = OpTypeFunction %void
%int = OpTypeInt 32 1
@ -38,11 +38,11 @@
%6 = OpLabel
%i = OpVariable %_ptr_Function_int Function %10
%j = OpVariable %_ptr_Function_int Function %10
%var_for_index = OpVariable %_ptr_Function_mat2v2float Function %24
OpStore %var_for_index %21
%m = OpVariable %_ptr_Function_mat2v2float Function %24
OpStore %m %21
%25 = OpLoad %int %i
%26 = OpLoad %int %j
%28 = OpAccessChain %_ptr_Function_float %var_for_index %25 %26
%28 = OpAccessChain %_ptr_Function_float %m %25 %26
%29 = OpLoad %float %28
OpReturn
OpFunctionEnd

2
test/bug/tint/825.wgsl.expected.wgsl
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@ -1,6 +1,6 @@
fn f() {
var i : i32;
var j : i32;
let m : mat2x2<f32> = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
var m : mat2x2<f32> = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
let f : f32 = m[i][j];
}

9
test/samples/triangle.wgsl
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@ -13,14 +13,13 @@
// limitations under the License.
// Vertex shader
let pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>(
vec2<f32>(0.0, 0.5),
vec2<f32>(-0.5, -0.5),
vec2<f32>(0.5, -0.5));
[[stage(vertex)]]
fn vtx_main([[builtin(vertex_index)]] VertexIndex : u32)
-> [[builtin(position)]] vec4<f32> {
var pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>(
vec2<f32>(0.0, 0.5),
vec2<f32>(-0.5, -0.5),
vec2<f32>(0.5, -0.5));
return vec4<f32>(pos[VertexIndex], 0.0, 1.0);
}

10
test/samples/triangle.wgsl.expected.hlsl
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@ -1,18 +1,16 @@
struct tint_array_wrapper {
float2 arr[3];
};
static const tint_array_wrapper pos = {{float2(0.0f, 0.5f), float2(-0.5f, -0.5f), float2(0.5f, -0.5f)}};
struct tint_symbol_1 {
uint VertexIndex : SV_VertexID;
};
struct tint_symbol_2 {
float4 value : SV_Position;
};
struct tint_array_wrapper {
float2 arr[3];
};
tint_symbol_2 vtx_main(tint_symbol_1 tint_symbol) {
const uint VertexIndex = tint_symbol.VertexIndex;
tint_array_wrapper pos = {{float2(0.0f, 0.5f), float2(-0.5f, -0.5f), float2(0.5f, -0.5f)}};
const tint_symbol_2 tint_symbol_4 = {float4(pos.arr[VertexIndex], 0.0f, 1.0f)};
return tint_symbol_4;
}

8
test/samples/triangle.wgsl.expected.msl
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@ -1,18 +1,18 @@
#include <metal_stdlib>
using namespace metal;
struct tint_array_wrapper {
float2 arr[3];
};
struct tint_symbol_1 {
float4 value [[position]];
};
struct tint_array_wrapper {
float2 arr[3];
};
struct tint_symbol_2 {
float4 value [[color(0)]];
};
constant tint_array_wrapper pos = {.arr={float2(0.0f, 0.5f), float2(-0.5f, -0.5f), float2(0.5f, -0.5f)}};
vertex tint_symbol_1 vtx_main(uint VertexIndex [[vertex_id]]) {
tint_array_wrapper pos = {.arr={float2(0.0f, 0.5f), float2(-0.5f, -0.5f), float2(0.5f, -0.5f)}};
tint_symbol_1 const tint_symbol_3 = {.value=float4(pos.arr[VertexIndex], 0.0f, 1.0f)};
return tint_symbol_3;
}

53
test/samples/triangle.wgsl.expected.spvasm
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@ -9,65 +9,64 @@
OpEntryPoint Fragment %frag_main "frag_main" %tint_symbol_5
OpExecutionMode %frag_main OriginUpperLeft
OpName %tint_pointsize "tint_pointsize"
OpName %pos "pos"
OpName %tint_symbol "tint_symbol"
OpName %tint_symbol_2 "tint_symbol_2"
OpName %tint_symbol_5 "tint_symbol_5"
OpName %tint_symbol_3 "tint_symbol_3"
OpName %tint_symbol_1 "tint_symbol_1"
OpName %vtx_main "vtx_main"
OpName %var_for_index "var_for_index"
OpName %pos "pos"
OpName %tint_symbol_6 "tint_symbol_6"
OpName %tint_symbol_4 "tint_symbol_4"
OpName %frag_main "frag_main"
OpDecorate %tint_pointsize BuiltIn PointSize
OpDecorate %_arr_v2float_uint_3 ArrayStride 8
OpDecorate %tint_symbol BuiltIn VertexIndex
OpDecorate %tint_symbol_2 BuiltIn Position
OpDecorate %tint_symbol_5 Location 0
OpDecorate %_arr_v2float_uint_3 ArrayStride 8
%float = OpTypeFloat 32
%_ptr_Output_float = OpTypePointer Output %float
%4 = OpConstantNull %float
%tint_pointsize = OpVariable %_ptr_Output_float Output %4
%v2float = OpTypeVector %float 2
%uint = OpTypeInt 32 0
%uint_3 = OpConstant %uint 3
%_arr_v2float_uint_3 = OpTypeArray %v2float %uint_3
%float_0 = OpConstant %float 0
%float_0_5 = OpConstant %float 0.5
%11 = OpConstantComposite %v2float %float_0 %float_0_5
%float_n0_5 = OpConstant %float -0.5
%13 = OpConstantComposite %v2float %float_n0_5 %float_n0_5
%14 = OpConstantComposite %v2float %float_0_5 %float_n0_5
%pos = OpConstantComposite %_arr_v2float_uint_3 %11 %13 %14
%_ptr_Input_uint = OpTypePointer Input %uint
%tint_symbol = OpVariable %_ptr_Input_uint Input
%v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%21 = OpConstantNull %v4float
%tint_symbol_2 = OpVariable %_ptr_Output_v4float Output %21
%tint_symbol_5 = OpVariable %_ptr_Output_v4float Output %21
%11 = OpConstantNull %v4float
%tint_symbol_2 = OpVariable %_ptr_Output_v4float Output %11
%tint_symbol_5 = OpVariable %_ptr_Output_v4float Output %11
%void = OpTypeVoid
%23 = OpTypeFunction %void %v4float
%28 = OpTypeFunction %void
%13 = OpTypeFunction %void %v4float
%18 = OpTypeFunction %void
%float_1 = OpConstant %float 1
%v2float = OpTypeVector %float 2
%uint_3 = OpConstant %uint 3
%_arr_v2float_uint_3 = OpTypeArray %v2float %uint_3
%float_0 = OpConstant %float 0
%float_0_5 = OpConstant %float 0.5
%27 = OpConstantComposite %v2float %float_0 %float_0_5
%float_n0_5 = OpConstant %float -0.5
%29 = OpConstantComposite %v2float %float_n0_5 %float_n0_5
%30 = OpConstantComposite %v2float %float_0_5 %float_n0_5
%31 = OpConstantComposite %_arr_v2float_uint_3 %27 %29 %30
%_ptr_Function__arr_v2float_uint_3 = OpTypePointer Function %_arr_v2float_uint_3
%34 = OpConstantNull %_arr_v2float_uint_3
%_ptr_Function_v2float = OpTypePointer Function %v2float
%49 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1
%tint_symbol_3 = OpFunction %void None %23
%tint_symbol_3 = OpFunction %void None %13
%tint_symbol_1 = OpFunctionParameter %v4float
%27 = OpLabel
%17 = OpLabel
OpStore %tint_symbol_2 %tint_symbol_1
OpReturn
OpFunctionEnd
%vtx_main = OpFunction %void None %28
%30 = OpLabel
%var_for_index = OpVariable %_ptr_Function__arr_v2float_uint_3 Function %34
%vtx_main = OpFunction %void None %18
%20 = OpLabel
%pos = OpVariable %_ptr_Function__arr_v2float_uint_3 Function %34
OpStore %tint_pointsize %float_1
OpStore %var_for_index %pos
OpStore %pos %31
%36 = OpLoad %uint %tint_symbol
%38 = OpAccessChain %_ptr_Function_v2float %var_for_index %36
%38 = OpAccessChain %_ptr_Function_v2float %pos %36
%39 = OpLoad %v2float %38
%40 = OpCompositeExtract %float %39 0
%41 = OpCompositeExtract %float %39 1
@ -75,13 +74,13 @@
%35 = OpFunctionCall %void %tint_symbol_3 %42
OpReturn
OpFunctionEnd
%tint_symbol_6 = OpFunction %void None %23
%tint_symbol_6 = OpFunction %void None %13
%tint_symbol_4 = OpFunctionParameter %v4float
%45 = OpLabel
OpStore %tint_symbol_5 %tint_symbol_4
OpReturn
OpFunctionEnd
%frag_main = OpFunction %void None %28
%frag_main = OpFunction %void None %18
%47 = OpLabel
%48 = OpFunctionCall %void %tint_symbol_6 %49
OpReturn

3
test/samples/triangle.wgsl.expected.wgsl
View File

@ -1,7 +1,6 @@
let pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>(vec2<f32>(0.0, 0.5), vec2<f32>(-0.5, -0.5), vec2<f32>(0.5, -0.5));
[[stage(vertex)]]
fn vtx_main([[builtin(vertex_index)]] VertexIndex : u32) -> [[builtin(position)]] vec4<f32> {
var pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>(vec2<f32>(0.0, 0.5), vec2<f32>(-0.5, -0.5), vec2<f32>(0.5, -0.5));
return vec4<f32>(pos[VertexIndex], 0.0, 1.0);
}