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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
//===- WasmTraits.h - DenseMap traits for the Wasm structures ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides llvm::DenseMapInfo traits for the Wasm structures.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECT_WASMTRAITS_H
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#define LLVM_OBJECT_WASMTRAITS_H
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#include "llvm/ADT/Hashing.h"
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#include "llvm/BinaryFormat/Wasm.h"
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namespace llvm {
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template <typename T> struct DenseMapInfo;
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// Traits for using WasmSignature in a DenseMap.
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template <> struct DenseMapInfo<wasm::WasmSignature> {
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static wasm::WasmSignature getEmptyKey() {
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wasm::WasmSignature Sig;
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Sig.State = wasm::WasmSignature::Empty;
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return Sig;
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}
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static wasm::WasmSignature getTombstoneKey() {
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wasm::WasmSignature Sig;
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Sig.State = wasm::WasmSignature::Tombstone;
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return Sig;
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}
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static unsigned getHashValue(const wasm::WasmSignature &Sig) {
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uintptr_t H = hash_value(Sig.State);
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for (auto Ret : Sig.Returns)
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H = hash_combine(H, Ret);
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for (auto Param : Sig.Params)
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H = hash_combine(H, Param);
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return H;
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}
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static bool isEqual(const wasm::WasmSignature &LHS,
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const wasm::WasmSignature &RHS) {
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return LHS == RHS;
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}
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};
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// Traits for using WasmGlobalType in a DenseMap
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template <> struct DenseMapInfo<wasm::WasmGlobalType> {
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static wasm::WasmGlobalType getEmptyKey() {
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return wasm::WasmGlobalType{1, true};
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}
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static wasm::WasmGlobalType getTombstoneKey() {
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return wasm::WasmGlobalType{2, true};
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}
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static unsigned getHashValue(const wasm::WasmGlobalType &GlobalType) {
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return hash_combine(GlobalType.Type, GlobalType.Mutable);
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}
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static bool isEqual(const wasm::WasmGlobalType &LHS,
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const wasm::WasmGlobalType &RHS) {
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return LHS == RHS;
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}
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};
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} // end namespace llvm
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#endif // LLVM_OBJECT_WASMTRAITS_H
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