mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-07-29 08:25:39 +00:00
946858ad56
This CL moves array to the type/ folder. Namespaces are updated as needed. A FriendlyName method was added to ArrayCount so the sem:: ArrayCount entries do not need to be referenced inside type/. Bug: tint:1718 Change-Id: I16a8f32b3fab1131b284a6981a5c386081138b08 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/113427 Commit-Queue: Dan Sinclair <dsinclair@chromium.org> Reviewed-by: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com>
79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
// Copyright 2022 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/tint/transform/var_for_dynamic_index.h"
|
|
|
|
#include <utility>
|
|
|
|
#include "src/tint/program_builder.h"
|
|
#include "src/tint/transform/utils/hoist_to_decl_before.h"
|
|
|
|
namespace tint::transform {
|
|
|
|
VarForDynamicIndex::VarForDynamicIndex() = default;
|
|
|
|
VarForDynamicIndex::~VarForDynamicIndex() = default;
|
|
|
|
Transform::ApplyResult VarForDynamicIndex::Apply(const Program* src,
|
|
const DataMap&,
|
|
DataMap&) const {
|
|
ProgramBuilder b;
|
|
CloneContext ctx{&b, src, /* auto_clone_symbols */ true};
|
|
|
|
HoistToDeclBefore hoist_to_decl_before(ctx);
|
|
|
|
// Extracts array and matrix values that are dynamically indexed to a
|
|
// temporary `var` local that is then indexed.
|
|
auto dynamic_index_to_var = [&](const ast::IndexAccessorExpression* access_expr) {
|
|
auto* index_expr = access_expr->index;
|
|
auto* object_expr = access_expr->object;
|
|
auto& sem = src->Sem();
|
|
|
|
if (sem.Get(index_expr)->ConstantValue()) {
|
|
// Index expression resolves to a compile time value.
|
|
// As this isn't a dynamic index, we can ignore this.
|
|
return true;
|
|
}
|
|
|
|
auto* indexed = sem.Get(object_expr);
|
|
if (!indexed->Type()->IsAnyOf<type::Array, type::Matrix>()) {
|
|
// We only care about array and matrices.
|
|
return true;
|
|
}
|
|
|
|
// TODO(bclayton): group multiple accesses in the same object.
|
|
// e.g. arr[i] + arr[i+1] // Don't create two vars for this
|
|
return hoist_to_decl_before.Add(indexed, object_expr, HoistToDeclBefore::VariableKind::kVar,
|
|
"var_for_index");
|
|
};
|
|
|
|
bool index_accessor_found = false;
|
|
for (auto* node : src->ASTNodes().Objects()) {
|
|
if (auto* access_expr = node->As<ast::IndexAccessorExpression>()) {
|
|
if (!dynamic_index_to_var(access_expr)) {
|
|
return Program(std::move(b));
|
|
}
|
|
index_accessor_found = true;
|
|
}
|
|
}
|
|
if (!index_accessor_found) {
|
|
return SkipTransform;
|
|
}
|
|
|
|
ctx.Clone();
|
|
return Program(std::move(b));
|
|
}
|
|
|
|
} // namespace tint::transform
|