80 lines
2.6 KiB
C++
80 lines
2.6 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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// Traits for using WasmSignature in a DenseMap.
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template <> struct DenseMapInfo<wasm::WasmSignature, void> {
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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, void> {
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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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// Traits for using WasmLimits in a DenseMap
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template <> struct DenseMapInfo<wasm::WasmLimits, void> {
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static unsigned getHashValue(const wasm::WasmLimits &Limits) {
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unsigned Hash = hash_value(Limits.Flags);
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Hash = hash_combine(Hash, Limits.Minimum);
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if (Limits.Flags & llvm::wasm::WASM_LIMITS_FLAG_HAS_MAX) {
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Hash = hash_combine(Hash, Limits.Maximum);
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}
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return Hash;
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}
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static bool isEqual(const wasm::WasmLimits &LHS,
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const wasm::WasmLimits &RHS) {
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return LHS == RHS;
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}
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};
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// Traits for using WasmTableType in a DenseMap
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template <> struct DenseMapInfo<wasm::WasmTableType, void> {
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static unsigned getHashValue(const wasm::WasmTableType &TableType) {
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return hash_combine(
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TableType.ElemType,
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DenseMapInfo<wasm::WasmLimits, void>::getHashValue(TableType.Limits));
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}
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static bool isEqual(const wasm::WasmTableType &LHS,
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const wasm::WasmTableType &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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