mirror of
https://github.com/encounter/dawn-cmake.git
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4a92a3c904
Add a 'NodeID' to each ast::Node which is the sequentially allocated
index of the node. Use this in sem::Info to map the AST node to the
semantic node, instead of using a std::unordered_map.
Optimised very hot code by entirely eliminating map lookups, and
dramatically reducing cache misses (lookups are usually sequentually
ordered).
Timings running
'webgpu:shader,execution,expression,call,builtin,atan2:f32:inputSource="const";vectorize="_undef_"'
with dawn/node, using SwiftShader:
Without change: 3.22647107s
With change: 3.10578879s
Bug: tint:1613
Change-Id: I22ec48d933b2e5f9da04494bff4e979e6f7b1982
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/96140
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
86 lines
3.3 KiB
C++
86 lines
3.3 KiB
C++
// Copyright 2022 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TINT_TRANSFORM_SPIRV_ATOMIC_H_
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#define SRC_TINT_TRANSFORM_SPIRV_ATOMIC_H_
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#include <string>
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#include "src/tint/ast/internal_attribute.h"
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#include "src/tint/sem/builtin_type.h"
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#include "src/tint/transform/transform.h"
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// Forward declarations
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namespace tint {
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class CloneContext;
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} // namespace tint
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namespace tint::transform {
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/// SpirvAtomic is a transform that replaces calls to stub functions created by the SPIR-V reader
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/// with calls to the WGSL atomic builtin. It also makes sure to replace variable declarations that
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/// are the target of the atomic operations with an atomic declaration of the same type. For
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/// structs, it creates a copy of the original struct with atomic members.
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class SpirvAtomic final : public Castable<SpirvAtomic, Transform> {
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public:
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/// Constructor
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SpirvAtomic();
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/// Destructor
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~SpirvAtomic() override;
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/// Stub is an attribute applied to stub SPIR-V reader generated functions that need to be
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/// translated to an atomic builtin.
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class Stub final : public Castable<Stub, ast::InternalAttribute> {
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public:
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/// @param pid the identifier of the program that owns this node
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/// @param nid the unique node identifier
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/// @param builtin the atomic builtin this stub represents
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Stub(ProgramID pid, ast::NodeID nid, sem::BuiltinType builtin);
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/// Destructor
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~Stub() override;
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/// @return a short description of the internal attribute which will be
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/// displayed as `@internal(<name>)`
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std::string InternalName() const override;
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/// Performs a deep clone of this object using the CloneContext `ctx`.
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/// @param ctx the clone context
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/// @return the newly cloned object
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const Stub* Clone(CloneContext* ctx) const override;
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/// The type of the intrinsic
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const sem::BuiltinType builtin;
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};
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/// @param program the program to inspect
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/// @param data optional extra transform-specific input data
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/// @returns true if this transform should be run for the given program
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bool ShouldRun(const Program* program, const DataMap& data = {}) const override;
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protected:
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struct State;
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/// Runs the transform using the CloneContext built for transforming a
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/// program. Run() is responsible for calling Clone() on the CloneContext.
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/// @param ctx the CloneContext primed with the input program and
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/// ProgramBuilder
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/// @param inputs optional extra transform-specific input data
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/// @param outputs optional extra transform-specific output data
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void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) const override;
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};
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} // namespace tint::transform
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#endif // SRC_TINT_TRANSFORM_SPIRV_ATOMIC_H_
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