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_BINARYFORMAT_WASMTRAITS_H
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#define LLVM_BINARYFORMAT_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_BINARYFORMAT_WASMTRAITS_H
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