noajshu updated this revision to Diff 379095.
noajshu added a comment.
rebase against main
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D111371/new/
https://reviews.llvm.org/D111371
Files:
clang/lib/CodeGen/BackendUtil.cpp
lld/COFF/LTO.cpp
lld/ELF/LTO.cpp
lld/MachO/LTO.cpp
lld/wasm/LTO.cpp
llvm/include/llvm/LTO/Caching.h
llvm/include/llvm/LTO/LTO.h
llvm/include/llvm/LTO/legacy/LTOCodeGenerator.h
llvm/include/llvm/Support/Caching.h
llvm/lib/LTO/CMakeLists.txt
llvm/lib/LTO/Caching.cpp
llvm/lib/LTO/LTOCodeGenerator.cpp
llvm/lib/Support/CMakeLists.txt
llvm/lib/Support/Caching.cpp
llvm/tools/gold/gold-plugin.cpp
llvm/tools/llvm-lto/llvm-lto.cpp
llvm/tools/llvm-lto2/llvm-lto2.cpp
Index: llvm/tools/llvm-lto2/llvm-lto2.cpp
===================================================================
--- llvm/tools/llvm-lto2/llvm-lto2.cpp
+++ llvm/tools/llvm-lto2/llvm-lto2.cpp
@@ -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 @@
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 @@
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;
Index: llvm/tools/llvm-lto/llvm-lto.cpp
===================================================================
--- llvm/tools/llvm-lto/llvm-lto.cpp
+++ llvm/tools/llvm-lto/llvm-lto.cpp
@@ -1097,8 +1097,7 @@
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 @@
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))
Index: llvm/tools/gold/gold-plugin.cpp
===================================================================
--- llvm/tools/gold/gold-plugin.cpp
+++ llvm/tools/gold/gold-plugin.cpp
@@ -1081,12 +1081,11 @@
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 @@
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));
Index: llvm/lib/Support/Caching.cpp
===================================================================
--- llvm/lib/Support/Caching.cpp
+++ llvm/lib/Support/Caching.cpp
@@ -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 +26,18 @@
#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,
+ StringRef CacheDirectoryPathRef,
+ AddBufferFn AddBuffer) {
+ if (std::error_code EC = sys::fs::create_directories(CacheDirectoryPathRef))
return errorCodeToError(EC);
+ SmallString<64> CacheName = SmallString<64>(CacheNameRef.str());
+ SmallString<64> TempFilePrefix = SmallString<64>(TempFilePrefixRef.str());
+ SmallString<64> CacheDirectoryPath =
+ SmallString<64>(CacheDirectoryPathRef.str());
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 +139,13 @@
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.
Index: llvm/lib/Support/CMakeLists.txt
===================================================================
--- llvm/lib/Support/CMakeLists.txt
+++ llvm/lib/Support/CMakeLists.txt
@@ -123,6 +123,7 @@
BranchProbability.cpp
BuryPointer.cpp
CachePruning.cpp
+ Caching.cpp
circular_raw_ostream.cpp
Chrono.cpp
COM.cpp
Index: llvm/lib/LTO/LTOCodeGenerator.cpp
===================================================================
--- llvm/lib/LTO/LTOCodeGenerator.cpp
+++ llvm/lib/LTO/LTOCodeGenerator.cpp
@@ -245,8 +245,7 @@
// 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 @@
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 @@
return true;
}
-bool LTOCodeGenerator::compileOptimized(lto::AddStreamFn AddStream,
+bool LTOCodeGenerator::compileOptimized(AddStreamFn AddStream,
unsigned ParallelismLevel) {
if (!this->determineTarget())
return false;
Index: llvm/lib/LTO/CMakeLists.txt
===================================================================
--- llvm/lib/LTO/CMakeLists.txt
+++ llvm/lib/LTO/CMakeLists.txt
@@ -1,5 +1,4 @@
add_llvm_component_library(LLVMLTO
- Caching.cpp
LTO.cpp
LTOBackend.cpp
LTOModule.cpp
Index: llvm/include/llvm/Support/Caching.h
===================================================================
--- /dev/null
+++ llvm/include/llvm/Support/Caching.h
@@ -0,0 +1,76 @@
+//===- Caching.h - LLVM File Cache Handling 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. 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,
+ StringRef CacheDirectoryPathRef,
+ AddBufferFn AddBuffer);
+} // namespace llvm
+
+#endif
Index: llvm/include/llvm/LTO/legacy/LTOCodeGenerator.h
===================================================================
--- llvm/include/llvm/LTO/legacy/LTOCodeGenerator.h
+++ llvm/include/llvm/LTO/legacy/LTOCodeGenerator.h
@@ -176,7 +176,7 @@
/// 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.
Index: llvm/include/llvm/LTO/LTO.h
===================================================================
--- llvm/include/llvm/LTO/LTO.h
+++ llvm/include/llvm/LTO/LTO.h
@@ -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 @@
}
};
-/// 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.
Index: llvm/include/llvm/LTO/Caching.h
===================================================================
--- llvm/include/llvm/LTO/Caching.h
+++ /dev/null
@@ -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
Index: lld/wasm/LTO.cpp
===================================================================
--- lld/wasm/LTO.cpp
+++ lld/wasm/LTO.cpp
@@ -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 @@
// 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));
Index: lld/MachO/LTO.cpp
===================================================================
--- lld/MachO/LTO.cpp
+++ lld/MachO/LTO.cpp
@@ -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 @@
// 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));
Index: lld/ELF/LTO.cpp
===================================================================
--- lld/ELF/LTO.cpp
+++ lld/ELF/LTO.cpp
@@ -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 @@
// 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));
Index: lld/COFF/LTO.cpp
===================================================================
--- lld/COFF/LTO.cpp
+++ lld/COFF/LTO.cpp
@@ -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 @@
// 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));
Index: clang/lib/CodeGen/BackendUtil.cpp
===================================================================
--- clang/lib/CodeGen/BackendUtil.cpp
+++ clang/lib/CodeGen/BackendUtil.cpp
@@ -1542,7 +1542,7 @@
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 != "") {
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