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e3f2005b2d
Do less work for single-value hashes. Specialize pointer hashing to improve hash quality. Change-Id: I2f3839d15754543735728814c7f54a5e7ac81569 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99282 Commit-Queue: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
79 lines
2.6 KiB
C++
79 lines
2.6 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/sem/call_target.h"
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#include <utility>
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#include "src/tint/symbol_table.h"
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#include "src/tint/utils/hash.h"
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TINT_INSTANTIATE_TYPEINFO(tint::sem::CallTarget);
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namespace tint::sem {
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CallTarget::CallTarget(const sem::Type* return_type,
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utils::VectorRef<const Parameter*> parameters,
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EvaluationStage stage)
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: signature_{return_type, std::move(parameters)}, stage_(stage) {
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TINT_ASSERT(Semantic, return_type);
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}
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CallTarget::CallTarget(const CallTarget&) = default;
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CallTarget::~CallTarget() = default;
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CallTargetSignature::CallTargetSignature(const sem::Type* ret_ty,
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utils::VectorRef<const Parameter*> params)
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: return_type(ret_ty), parameters(std::move(params)) {}
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CallTargetSignature::CallTargetSignature(const CallTargetSignature&) = default;
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CallTargetSignature::~CallTargetSignature() = default;
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int CallTargetSignature::IndexOf(ParameterUsage usage) const {
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for (size_t i = 0; i < parameters.Length(); i++) {
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if (parameters[i]->Usage() == usage) {
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return static_cast<int>(i);
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}
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}
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return -1;
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}
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bool CallTargetSignature::operator==(const CallTargetSignature& other) const {
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if (return_type != other.return_type || parameters.Length() != other.parameters.Length()) {
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return false;
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}
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for (size_t i = 0; i < parameters.Length(); i++) {
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auto* a = parameters[i];
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auto* b = other.parameters[i];
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if (a->Type() != b->Type() || a->Usage() != b->Usage()) {
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return false;
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}
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}
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return true;
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}
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} // namespace tint::sem
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namespace std {
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std::size_t hash<tint::sem::CallTargetSignature>::operator()(
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const tint::sem::CallTargetSignature& sig) const {
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size_t hash = tint::utils::Hash(sig.parameters.Length());
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for (auto* p : sig.parameters) {
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hash = tint::utils::HashCombine(hash, p->Type(), p->Usage());
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}
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return tint::utils::Hash(hash, sig.return_type);
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}
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} // namespace std
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