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76bde39ee7
Avoid path encoding difference (for example, real_path vs. path from symlink) by eliminating the path from cache key. Cache key is now encoded with the index of the input file from all the input files from the command-line, reguardless if those inputs will produce output or not. This is to ensure stable ordering even the batching is different. Add a new cache computation API that is preferred for using input index directly. Old API for cache key is deprecated but still updated to fallback to real_path comparsion if needed. As a result of swift scan API change, rename the feature in JSON file to avoid version confusion between swift-driver and libSwiftScan. rdar://119387650
49 lines
1.9 KiB
C++
49 lines
1.9 KiB
C++
//===--- CompileJobCacheKey.h - compile cache key methods -------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains declarations of utility methods for creating cache keys
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// for compilation jobs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_COMPILEJOBCACHEKEY_H
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#define SWIFT_COMPILEJOBCACHEKEY_H
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#include "swift/AST/DiagnosticEngine.h"
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#include "swift/Basic/FileTypes.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/CAS/ObjectStore.h"
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#include "llvm/Support/Error.h"
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namespace swift {
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/// Compute CompileJobBaseKey from swift-frontend command-line arguments.
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/// CompileJobBaseKey represents the core inputs and arguments, and is used as a
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/// base to compute keys for each compiler outputs.
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// TODO: switch to create key from CompilerInvocation after we can canonicalize
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// arguments.
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llvm::Expected<llvm::cas::ObjectRef>
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createCompileJobBaseCacheKey(llvm::cas::ObjectStore &CAS,
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ArrayRef<const char *> Args);
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/// Compute CompileJobKey for the compiler outputs. The key for the output
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/// is computed from the base key for the compilation and the input file index
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/// which is the index for the input among all the input files (not just the
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/// output producing inputs).
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llvm::Expected<llvm::cas::ObjectRef>
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createCompileJobCacheKeyForOutput(llvm::cas::ObjectStore &CAS,
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llvm::cas::ObjectRef BaseKey,
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unsigned InputIndex);
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} // namespace swift
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#endif
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