replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[Support][ThinLTO] Move ThinLTO caching to LLVM Support library 

We would like to move ThinLTO’s battle-tested file caching mechanism to
the LLVM Support library so that we can use it elsewhere in LLVM.

Patch By: noajshu

Differential Revision: https://reviews.llvm.org/D111371
This commit is contained in:
Noah Shutty 2021-10-18 18:40:57 -07:00 committed by Petr Hosek
parent facff468b6
commit e678c51177
19 changed files with 145 additions and 134 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
clang/docs/tools/clang-formatted-files.txt
View File

@ -4745,7 +4745,6 @@ llvm/include/llvm/IR/ReplaceConstant.h
llvm/include/llvm/IR/StructuralHash.h
llvm/include/llvm/IR/TrackingMDRef.h
llvm/include/llvm/IR/UseListOrder.h
llvm/include/llvm/LTO/Caching.h
llvm/include/llvm/LTO/SummaryBasedOptimizations.h
llvm/include/llvm/MC/MCAsmInfoCOFF.h
llvm/include/llvm/MC/MCAsmInfoDarwin.h
@ -4852,6 +4851,7 @@ llvm/include/llvm/Support/BinaryStreamRef.h
llvm/include/llvm/Support/BinaryStreamWriter.h
llvm/include/llvm/Support/BuryPointer.h
llvm/include/llvm/Support/CachePruning.h
llvm/include/llvm/Support/Caching.h
llvm/include/llvm/Support/CFGDiff.h
llvm/include/llvm/Support/CFGUpdate.h
llvm/include/llvm/Support/CodeGenCoverage.h

2
clang/lib/CodeGen/BackendUtil.cpp
View File

@ -1561,7 +1561,7 @@ static void runThinLTOBackend(
return;
auto AddStream = [&](size_t Task) {
return std::make_unique<lto::NativeObjectStream>(std::move(OS));
return std::make_unique<NativeObjectStream>(std::move(OS));
};
lto::Config Conf;
if (CGOpts.SaveTempsFilePrefix != "") {

15
lld/COFF/LTO.cpp
View File

@ -20,10 +20,10 @@
#include "llvm/ADT/Twine.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/LTO/Caching.h"
#include "llvm/LTO/Config.h"
#include "llvm/LTO/LTO.h"
#include "llvm/Object/SymbolicFile.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
@ -164,16 +164,17 @@ std::vector<InputFile *> BitcodeCompiler::compile(COFFLinkerContext &ctx) {
// The /lldltocache option specifies the path to a directory in which to cache
// native object files for ThinLTO incremental builds. If a path was
// specified, configure LTO to use it as the cache directory.
lto::NativeObjectCache cache;
NativeObjectCache cache;
if (!config->ltoCache.empty())
cache = check(lto::localCache(
config->ltoCache, [&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
cache =
check(localCache("ThinLTO", "Thin", config->ltoCache,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
checkError(ltoObj->run(
[&](size_t task) {
return std::make_unique<lto::NativeObjectStream>(
return std::make_unique<NativeObjectStream>(
std::make_unique<raw_svector_ostream>(buf[task]));
},
cache));

16
lld/ELF/LTO.cpp
View File

@ -23,10 +23,10 @@
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/Bitcode/BitcodeWriter.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/LTO/Caching.h"
#include "llvm/LTO/Config.h"
#include "llvm/LTO/LTO.h"
#include "llvm/Object/SymbolicFile.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
@ -304,18 +304,18 @@ std::vector<InputFile *> BitcodeCompiler::compile() {
// The --thinlto-cache-dir option specifies the path to a directory in which
// to cache native object files for ThinLTO incremental builds. If a path was
// specified, configure LTO to use it as the cache directory.
lto::NativeObjectCache cache;
NativeObjectCache cache;
if (!config->thinLTOCacheDir.empty())
cache = check(
lto::localCache(config->thinLTOCacheDir,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
cache =
check(localCache("ThinLTO", "Thin", config->thinLTOCacheDir,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
if (!bitcodeFiles.empty())
checkError(ltoObj->run(
[&](size_t task) {
return std::make_unique<lto::NativeObjectStream>(
return std::make_unique<NativeObjectStream>(
std::make_unique<raw_svector_ostream>(buf[task]));
},
cache));

16
lld/MachO/LTO.cpp
View File

@ -17,9 +17,9 @@
#include "lld/Common/ErrorHandler.h"
#include "lld/Common/Strings.h"
#include "lld/Common/TargetOptionsCommandFlags.h"
#include "llvm/LTO/Caching.h"
#include "llvm/LTO/Config.h"
#include "llvm/LTO/LTO.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
@ -105,17 +105,17 @@ std::vector<ObjFile *> BitcodeCompiler::compile() {
// The -cache_path_lto option specifies the path to a directory in which
// to cache native object files for ThinLTO incremental builds. If a path was
// specified, configure LTO to use it as the cache directory.
lto::NativeObjectCache cache;
NativeObjectCache cache;
if (!config->thinLTOCacheDir.empty())
cache = check(
lto::localCache(config->thinLTOCacheDir,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
cache =
check(localCache("ThinLTO", "Thin", config->thinLTOCacheDir,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
checkError(ltoObj->run(
[&](size_t task) {
return std::make_unique<lto::NativeObjectStream>(
return std::make_unique<NativeObjectStream>(
std::make_unique<raw_svector_ostream>(buf[task]));
},
cache));

16
lld/wasm/LTO.cpp
View File

@ -19,10 +19,10 @@
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/LTO/Caching.h"
#include "llvm/LTO/Config.h"
#include "llvm/LTO/LTO.h"
#include "llvm/Object/SymbolicFile.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
@ -127,17 +127,17 @@ std::vector<StringRef> BitcodeCompiler::compile() {
// The --thinlto-cache-dir option specifies the path to a directory in which
// to cache native object files for ThinLTO incremental builds. If a path was
// specified, configure LTO to use it as the cache directory.
lto::NativeObjectCache cache;
NativeObjectCache cache;
if (!config->thinLTOCacheDir.empty())
cache = check(
lto::localCache(config->thinLTOCacheDir,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
cache =
check(localCache("ThinLTO", "Thin", config->thinLTOCacheDir,
[&](size_t task, std::unique_ptr<MemoryBuffer> mb) {
files[task] = std::move(mb);
}));
checkError(ltoObj->run(
[&](size_t task) {
return std::make_unique<lto::NativeObjectStream>(
return std::make_unique<NativeObjectStream>(
std::make_unique<raw_svector_ostream>(buf[task]));
},
cache));

38
llvm/include/llvm/LTO/Caching.h
View File

@ -1,38 +0,0 @@
//===- Caching.h - LLVM Link Time Optimizer Configuration -----------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the localCache function, which allows clients to add a
// filesystem cache to ThinLTO.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LTO_CACHING_H
#define LLVM_LTO_CACHING_H
#include "llvm/LTO/LTO.h"
namespace llvm {
namespace lto {
/// This type defines the callback to add a pre-existing native object file
/// (e.g. in a cache).
///
/// Buffer callbacks must be thread safe.
using AddBufferFn =
std::function<void(unsigned Task, std::unique_ptr<MemoryBuffer> MB)>;
/// Create a local file system cache which uses the given cache directory and
/// file callback. This function also creates the cache directory if it does not
/// already exist.
Expected<NativeObjectCache> localCache(StringRef CacheDirectoryPath,
AddBufferFn AddBuffer);
} // namespace lto
} // namespace llvm
#endif

35
llvm/include/llvm/LTO/LTO.h
View File

@ -21,6 +21,7 @@
#include "llvm/IR/ModuleSummaryIndex.h"
#include "llvm/LTO/Config.h"
#include "llvm/Object/IRSymtab.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/thread.h"
#include "llvm/Transforms/IPO/FunctionAttrs.h"
@ -187,40 +188,6 @@ private:
}
};
/// This class wraps an output stream for a native object. Most clients should
/// just be able to return an instance of this base class from the stream
/// callback, but if a client needs to perform some action after the stream is
/// written to, that can be done by deriving from this class and overriding the
/// destructor.
class NativeObjectStream {
public:
NativeObjectStream(std::unique_ptr<raw_pwrite_stream> OS) : OS(std::move(OS)) {}
std::unique_ptr<raw_pwrite_stream> OS;
virtual ~NativeObjectStream() = default;
};
/// This type defines the callback to add a native object that is generated on
/// the fly.
///
/// Stream callbacks must be thread safe.
using AddStreamFn =
std::function<std::unique_ptr<NativeObjectStream>(unsigned Task)>;
/// This is the type of a native object cache. To request an item from the
/// cache, pass a unique string as the Key. For hits, the cached file will be
/// added to the link and this function will return AddStreamFn(). For misses,
/// the cache will return a stream callback which must be called at most once to
/// produce content for the stream. The native object stream produced by the
/// stream callback will add the file to the link after the stream is written
/// to.
///
/// Clients generally look like this:
///
/// if (AddStreamFn AddStream = Cache(Task, Key))
/// ProduceContent(AddStream);
using NativeObjectCache =
std::function<AddStreamFn(unsigned Task, StringRef Key)>;
/// A ThinBackend defines what happens after the thin-link phase during ThinLTO.
/// The details of this type definition aren't important; clients can only
/// create a ThinBackend using one of the create*ThinBackend() functions below.

2
llvm/include/llvm/LTO/legacy/LTOCodeGenerator.h
View File

@ -176,7 +176,7 @@ struct LTOCodeGenerator {
/// created using the \p AddStream callback. Returns true on success.
///
/// Calls \a verifyMergedModuleOnce().
bool compileOptimized(lto::AddStreamFn AddStream, unsigned ParallelismLevel);
bool compileOptimized(AddStreamFn AddStream, unsigned ParallelismLevel);
/// Enable the Freestanding mode: indicate that the optimizer should not
/// assume builtins are present on the target.

76
llvm/include/llvm/Support/Caching.h Normal file
View File

@ -0,0 +1,76 @@
//===- Caching.h - LLVM File Cache Handling Configuration -------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the localCache function, which allows clients to add a
// filesystem cache. This is used by ThinLTO.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_CACHING_H
#define LLVM_SUPPORT_CACHING_H
#include "llvm/Support/Error.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/thread.h"
namespace llvm {
/// This class wraps an output stream for a native object. Most clients should
/// just be able to return an instance of this base class from the stream
/// callback, but if a client needs to perform some action after the stream is
/// written to, that can be done by deriving from this class and overriding the
/// destructor.
class NativeObjectStream {
public:
NativeObjectStream(std::unique_ptr<raw_pwrite_stream> OS)
: OS(std::move(OS)) {}
std::unique_ptr<raw_pwrite_stream> OS;
virtual ~NativeObjectStream() = default;
};
/// This type defines the callback to add a native object that is generated on
/// the fly.
///
/// Stream callbacks must be thread safe.
using AddStreamFn =
std::function<std::unique_ptr<NativeObjectStream>(unsigned Task)>;
/// This is the type of a native object cache. To request an item from the
/// cache, pass a unique string as the Key. For hits, the cached file will be
/// added to the link and this function will return AddStreamFn(). For misses,
/// the cache will return a stream callback which must be called at most once to
/// produce content for the stream. The native object stream produced by the
/// stream callback will add the file to the link after the stream is written
/// to.
///
/// Clients generally look like this:
///
/// if (AddStreamFn AddStream = Cache(Task, Key))
/// ProduceContent(AddStream);
using NativeObjectCache =
std::function<AddStreamFn(unsigned Task, StringRef Key)>;
/// This type defines the callback to add a pre-existing native object file
/// (e.g. in a cache).
///
/// Buffer callbacks must be thread safe.
using AddBufferFn =
std::function<void(unsigned Task, std::unique_ptr<MemoryBuffer> MB)>;
/// Create a local file system cache which uses the given cache name, temporary
/// file prefix, cache directory and file callback. This function also creates
/// the cache directory if it does not already exist. The cache name appears in
/// error messages for errors during caching. The temporary file prefix is used
/// in the temporary file naming scheme used when writing files atomically.
Expected<NativeObjectCache> localCache(Twine CacheNameRef,
Twine TempFilePrefixRef,
Twine CacheDirectoryPathRef,
AddBufferFn AddBuffer);
} // namespace llvm
#endif

1
llvm/lib/LTO/CMakeLists.txt
View File

@ -1,5 +1,4 @@
add_llvm_component_library(LLVMLTO
Caching.cpp
LTO.cpp
LTOBackend.cpp
LTOModule.cpp

7
llvm/lib/LTO/LTOCodeGenerator.cpp
View File

@ -245,8 +245,7 @@ bool LTOCodeGenerator::compileOptimizedToFile(const char **Name) {
// make unique temp output file to put generated code
SmallString<128> Filename;
auto AddStream =
[&](size_t Task) -> std::unique_ptr<lto::NativeObjectStream> {
auto AddStream = [&](size_t Task) -> std::unique_ptr<NativeObjectStream> {
StringRef Extension(Config.CGFileType == CGFT_AssemblyFile ? "s" : "o");
int FD;
@ -255,7 +254,7 @@ bool LTOCodeGenerator::compileOptimizedToFile(const char **Name) {
if (EC)
emitError(EC.message());
return std::make_unique<lto::NativeObjectStream>(
return std::make_unique<NativeObjectStream>(
std::make_unique<llvm::raw_fd_ostream>(FD, true));
};
@ -557,7 +556,7 @@ bool LTOCodeGenerator::optimize() {
return true;
}
bool LTOCodeGenerator::compileOptimized(lto::AddStreamFn AddStream,
bool LTOCodeGenerator::compileOptimized(AddStreamFn AddStream,
unsigned ParallelismLevel) {
if (!this->determineTarget())
return false;

1
llvm/lib/Support/CMakeLists.txt
View File

@ -123,6 +123,7 @@ add_llvm_component_library(LLVMSupport
BranchProbability.cpp
BuryPointer.cpp
CachePruning.cpp
Caching.cpp
circular_raw_ostream.cpp
Chrono.cpp
COM.cpp

26
llvm/lib/LTO/Caching.cpp → llvm/lib/Support/Caching.cpp
View File

@ -1,4 +1,4 @@
//===-Caching.cpp - LLVM Link Time Optimizer Cache Handling ---------------===//
//===-Caching.cpp - LLVM File Cache Handling ------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
@ -6,11 +6,11 @@
//
//===----------------------------------------------------------------------===//
//
// This file implements the Caching for ThinLTO.
// This file implements the Caching used by ThinLTO.
//
//===----------------------------------------------------------------------===//
#include "llvm/LTO/Caching.h"
#include "llvm/Support/Caching.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
@ -26,13 +26,20 @@
#endif
using namespace llvm;
using namespace llvm::lto;
Expected<NativeObjectCache> lto::localCache(StringRef CacheDirectoryPath,
AddBufferFn AddBuffer) {
if (std::error_code EC = sys::fs::create_directories(CacheDirectoryPath))
Expected<NativeObjectCache> llvm::localCache(Twine CacheNameRef,
Twine TempFilePrefixRef,
Twine CacheDirectoryPathRef,
AddBufferFn AddBuffer) {
if (std::error_code EC = sys::fs::create_directories(CacheDirectoryPathRef))
return errorCodeToError(EC);
// Create local copies which are safely captured-by-copy in lambdas
SmallString<64> CacheName, TempFilePrefix, CacheDirectoryPath;
CacheNameRef.toVector(CacheName);
TempFilePrefixRef.toVector(TempFilePrefix);
CacheDirectoryPathRef.toVector(CacheDirectoryPath);
return [=](unsigned Task, StringRef Key) -> AddStreamFn {
// This choice of file name allows the cache to be pruned (see pruneCache()
// in include/llvm/Support/CachePruning.h).
@ -134,12 +141,13 @@ Expected<NativeObjectCache> lto::localCache(StringRef CacheDirectoryPath,
return [=](size_t Task) -> std::unique_ptr<NativeObjectStream> {
// Write to a temporary to avoid race condition
SmallString<64> TempFilenameModel;
sys::path::append(TempFilenameModel, CacheDirectoryPath, "Thin-%%%%%%.tmp.o");
sys::path::append(TempFilenameModel, CacheDirectoryPath,
TempFilePrefix + "-%%%%%%.tmp.o");
Expected<sys::fs::TempFile> Temp = sys::fs::TempFile::create(
TempFilenameModel, sys::fs::owner_read | sys::fs::owner_write);
if (!Temp) {
errs() << "Error: " << toString(Temp.takeError()) << "\n";
report_fatal_error("ThinLTO: Can't get a temporary file");
report_fatal_error(CacheName + ": Can't get a temporary file");
}
// This CacheStream will move the temporary file into the cache when done.

9
llvm/tools/gold/gold-plugin.cpp
View File

@ -19,11 +19,11 @@
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/LTO/Caching.h"
#include "llvm/LTO/LTO.h"
#include "llvm/Object/Error.h"
#include "llvm/Remarks/HotnessThresholdParser.h"
#include "llvm/Support/CachePruning.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
@ -1081,12 +1081,11 @@ static std::vector<std::pair<SmallString<128>, bool>> runLTO() {
size_t MaxTasks = Lto->getMaxTasks();
std::vector<std::pair<SmallString<128>, bool>> Files(MaxTasks);
auto AddStream =
[&](size_t Task) -> std::unique_ptr<lto::NativeObjectStream> {
auto AddStream = [&](size_t Task) -> std::unique_ptr<NativeObjectStream> {
Files[Task].second = !SaveTemps;
int FD = getOutputFileName(Filename, /* TempOutFile */ !SaveTemps,
Files[Task].first, Task);
return std::make_unique<lto::NativeObjectStream>(
return std::make_unique<NativeObjectStream>(
std::make_unique<llvm::raw_fd_ostream>(FD, true));
};
@ -1096,7 +1095,7 @@ static std::vector<std::pair<SmallString<128>, bool>> runLTO() {
NativeObjectCache Cache;
if (!options::cache_dir.empty())
Cache = check(localCache(options::cache_dir, AddBuffer));
Cache = check(localCache("ThinLTO", "Thin", options::cache_dir, AddBuffer));
check(Lto->run(AddStream, Cache));

5
llvm/tools/llvm-lto/llvm-lto.cpp
View File

@ -1097,8 +1097,7 @@ int main(int argc, char **argv) {
error("writing merged module failed.");
}
auto AddStream =
[&](size_t Task) -> std::unique_ptr<lto::NativeObjectStream> {
auto AddStream = [&](size_t Task) -> std::unique_ptr<NativeObjectStream> {
std::string PartFilename = OutputFilename;
if (Parallelism != 1)
PartFilename += "." + utostr(Task);
@ -1108,7 +1107,7 @@ int main(int argc, char **argv) {
std::make_unique<raw_fd_ostream>(PartFilename, EC, sys::fs::OF_None);
if (EC)
error("error opening the file '" + PartFilename + "': " + EC.message());
return std::make_unique<lto::NativeObjectStream>(std::move(S));
return std::make_unique<NativeObjectStream>(std::move(S));
};
if (!CodeGen.compileOptimized(AddStream, Parallelism))

10
llvm/tools/llvm-lto2/llvm-lto2.cpp
View File

@ -19,10 +19,10 @@
#include "llvm/CodeGen/CommandFlags.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/LTO/Caching.h"
#include "llvm/LTO/LTO.h"
#include "llvm/Passes/PassPlugin.h"
#include "llvm/Remarks/HotnessThresholdParser.h"
#include "llvm/Support/Caching.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/InitLLVM.h"
@ -362,14 +362,13 @@ static int run(int argc, char **argv) {
if (HasErrors)
return 1;
auto AddStream =
[&](size_t Task) -> std::unique_ptr<lto::NativeObjectStream> {
auto AddStream = [&](size_t Task) -> std::unique_ptr<NativeObjectStream> {
std::string Path = OutputFilename + "." + utostr(Task);
std::error_code EC;
auto S = std::make_unique<raw_fd_ostream>(Path, EC, sys::fs::OF_None);
check(EC, Path);
return std::make_unique<lto::NativeObjectStream>(std::move(S));
return std::make_unique<NativeObjectStream>(std::move(S));
};
auto AddBuffer = [&](size_t Task, std::unique_ptr<MemoryBuffer> MB) {
@ -378,7 +377,8 @@ static int run(int argc, char **argv) {
NativeObjectCache Cache;
if (!CacheDir.empty())
Cache = check(localCache(CacheDir, AddBuffer), "failed to create cache");
Cache = check(localCache("ThinLTO", "Thin", CacheDir, AddBuffer),
"failed to create cache");
check(Lto.run(AddStream, Cache), "LTO::run failed");
return 0;

1
llvm/utils/gn/secondary/llvm/lib/LTO/BUILD.gn
View File

@ -22,7 +22,6 @@ static_library("LTO") {
"//llvm/lib/Transforms/Utils",
]
sources = [
"Caching.cpp",
"LTO.cpp",
"LTOBackend.cpp",
"LTOCodeGenerator.cpp",

1
llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
View File

@ -54,6 +54,7 @@ static_library("Support") {
"COM.cpp",
"CRC.cpp",
"CachePruning.cpp",
"Caching.cpp",
"Chrono.cpp",
"CodeGenCoverage.cpp",
"CommandLine.cpp",