llvm-project/llvm/lib/CAS/ActionCache.cpp
Steven Wu deab049b5c
[CAS] Add ActionCache to LLVMCAS Library (#114097)
ActionCache is used to store a mapping from CASID to CASID. The current
implementation of the ActionCache can only be used to associate the
key/value from the same hash context.

ActionCache has two operations: `put` to store the key/value and `get`
to
lookup the key/value mapping. ActionCache uses the same TrieRawHashMap
data structure to store the mapping, where is CASID of the key is the
hash to index the map.

While CASIDs for key/value are often associcate with actual CAS
ObjectStore, it doesn't provide the guarantee of the existence of such
object in any ObjectStore.
2025-08-20 14:42:44 -07:00

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/CAS/ActionCache.h"
#include "llvm/CAS/CASID.h"
#include "llvm/CAS/ObjectStore.h"
using namespace llvm;
using namespace llvm::cas;
void ActionCache::anchor() {}
CacheKey::CacheKey(const CASID &ID) : Key(toStringRef(ID.getHash()).str()) {}
CacheKey::CacheKey(const ObjectProxy &Proxy)
: CacheKey(Proxy.getCAS(), Proxy.getRef()) {}
CacheKey::CacheKey(const ObjectStore &CAS, const ObjectRef &Ref)
: Key(toStringRef(CAS.getID(Ref).getHash())) {}