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>
39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
// Copyright 2021 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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#include "src/tint/ast/invariant_attribute.h"
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#include "src/tint/program_builder.h"
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TINT_INSTANTIATE_TYPEINFO(tint::ast::InvariantAttribute);
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namespace tint::ast {
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InvariantAttribute::InvariantAttribute(ProgramID pid, NodeID nid, const Source& src)
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: Base(pid, nid, src) {}
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InvariantAttribute::~InvariantAttribute() = default;
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std::string InvariantAttribute::Name() const {
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return "invariant";
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}
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const InvariantAttribute* InvariantAttribute::Clone(CloneContext* ctx) const {
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// Clone arguments outside of create() call to have deterministic ordering
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auto src = ctx->Clone(source);
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return ctx->dst->create<InvariantAttribute>(src);
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}
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} // namespace tint::ast
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