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llvm-project/llvm/lib/Support
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Sam McCall a7edcfb533 [Support] Add JSON streaming output API, faster where the heavy value types aren't needed. 
Summary:
There's still a little bit of constant factor that could be trimmed (e.g.
more overloads to avoid round-tripping primitives through json::Value).
But this solves the memory scaling problem, and greatly improves the performance
constant factor, and the API should leave room for optimization if needed.

Adapt TimeProfiler to use it, eliminating almost all the performance regression
from r358476.

Performance test on my machine:
perf stat -r 5 ~/llvmbuild-opt/bin/clang++ -w -S -ftime-trace -mllvm -time-trace-granularity=0 spirit.cpp

Handcrafted JSON (HEAD=r358532 with r358476 reverted): 2480ms
json::Value (HEAD): 2757ms (+11%)
After this patch: 2520 ms (+1.6%)

Reviewers: anton-afanasyev, lebedev.ri

Subscribers: kristina, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60804

llvm-svn: 359186
 		2019-04-25 12:51:42 +00:00
..
Unix posix_spawn should retry upon EINTR 2019-04-24 23:24:53 +00:00
Windows [llvm][Support] Provide interface to set thread priorities 2019-04-16 14:32:43 +00:00
AArch64TargetParser.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
AMDGPUMetadata.cpp [AMDGPU] Factored PAL metadata handling out into its own class 2019-03-20 17:42:00 +00:00
APFloat.cpp [MC] Fix floating-point literal lexing. 2019-03-28 21:12:28 +00:00
APInt.cpp [APInt] Optimize umul_ov 2019-04-19 02:06:06 +00:00
APSInt.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ARMAttributeParser.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ARMBuildAttrs.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ARMTargetParser.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ARMWinEH.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Allocator.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Atomic.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BinaryStreamError.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BinaryStreamReader.cpp [Support] Add LEB128 support to BinaryStreamReader/Writer. 2019-04-17 15:38:27 +00:00
BinaryStreamRef.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BinaryStreamWriter.cpp [Support] Add LEB128 support to BinaryStreamReader/Writer. 2019-04-17 15:38:27 +00:00
BlockFrequency.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BranchProbability.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
BuryPointer.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CMakeLists.txt Attempt to recommit r357901 2019-04-08 12:31:12 +00:00
COM.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
COPYRIGHT.regex
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CRC.cpp Attempt to recommit r357901 2019-04-08 12:31:12 +00:00
CachePruning.cpp [CachePruning] Simplify comparator 2019-04-21 06:17:40 +00:00
Chrono.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CodeGenCoverage.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CommandLine.cpp Try once more to ensure constant initializaton of ManagedStatics 2019-04-24 20:13:23 +00:00
Compression.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ConvertUTF.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ConvertUTFWrapper.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
CrashRecoveryContext.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DAGDeltaAlgorithm.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DJB.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DataExtractor.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Debug.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DebugCounter.cpp Print out DebugCounter info with -print-debug-counter 2018-10-23 21:51:56 +00:00
DeltaAlgorithm.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
DynamicLibrary.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Errno.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Error.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ErrorHandling.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
FileCheck.cpp FileCheck [1/12]: Move variable table in new object 2019-04-15 10:10:11 +00:00
FileOutputBuffer.cpp FileOutputBuffer: handle mmap(2) failure 2019-01-22 21:49:56 +00:00
FileUtilities.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
FoldingSet.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
FormatVariadic.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
FormattedStream.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
GlobPattern.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
GraphWriter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Hashing.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Host.cpp [X86] Add CMPXCHG8B feature flag. Set it for all CPUs except i386/i486 including 'generic'. Disable use of CMPXCHG8B when this flag isn't set. 2019-03-20 23:35:49 +00:00
InitLLVM.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
IntEqClasses.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
IntervalMap.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ItaniumManglingCanonicalizer.cpp Update more file headers across all of the LLVM projects in the monorepo 2019-01-19 10:56:40 +00:00
JSON.cpp [Support] Add JSON streaming output API, faster where the heavy value types aren't needed. 2019-04-25 12:51:42 +00:00
JamCRC.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
KnownBits.cpp [KnownBits] Add computeForAddCarry() 2019-04-12 18:18:08 +00:00
LEB128.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LLVMBuild.txt Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LineIterator.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Locale.cpp [Windows] Convert from UTF-8 to UTF-16 when writing to a Windows console 2018-09-05 00:08:56 +00:00
LockFileManager.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
LowLevelType.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
MD5.cpp Remove \brief commands from doxygen comments. 2018-05-01 15:54:18 +00:00
ManagedStatic.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
MathExtras.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Memory.cpp Initial implementation of JITLink - A replacement for RuntimeDyld. 2019-04-20 17:10:34 +00:00
MemoryBuffer.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Mutex.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
NativeFormatting.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Optional.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Options.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Parallel.cpp Parallel: only allow the first TaskGroup to run tasks parallelly 2019-04-25 11:33:30 +00:00
Path.cpp Revert using fcopyfile(3) to implement sys::fs::copy_file(Twine, int) on macOS 2019-04-24 19:08:43 +00:00
PluginLoader.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
PrettyStackTrace.cpp Support: enable backtraces on Windows 2019-02-27 03:21:50 +00:00
Process.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Program.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
RWMutex.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
RandomNumberGenerator.cpp [CommandLine] Provide parser<unsigned long> instantiation to allow cl::opt<uint64_t> on LP64 platforms 2019-04-24 02:40:20 +00:00
Regex.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SHA1.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ScaledNumber.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ScopedPrinter.cpp Remove redundant includes from lib/Support. 2017-12-13 21:30:58 +00:00
Signals.cpp Only use argv[0] as the main executable name if it exists. 2019-04-15 22:07:56 +00:00
Signposts.cpp Annotate timeline in Instruments with passes and other timed regions. 2019-02-19 18:18:31 +00:00
SmallPtrSet.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SmallVector.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SourceMgr.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SpecialCaseList.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Statistic.cpp Use llvm::stable_sort 2019-04-23 14:51:27 +00:00
StringExtras.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
StringMap.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
StringPool.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
StringRef.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
StringSaver.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SymbolRemappingReader.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
SystemUtils.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
TarWriter.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
TargetParser.cpp [AMDGPU] Add gfx1010 target definitions 2019-04-24 17:03:15 +00:00
TargetRegistry.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ThreadLocal.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
ThreadPool.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Threading.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
TimeProfiler.cpp [Support] Add JSON streaming output API, faster where the heavy value types aren't needed. 2019-04-25 12:51:42 +00:00
Timer.cpp [Legacy][TimePasses] allow -time-passes reporting into a custom stream 2019-03-22 23:11:08 +00:00
ToolOutputFile.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
TrigramIndex.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Triple.cpp [WebAssembly] Add Emscripten OS definition + small_printf 2019-04-03 01:08:35 +00:00
Twine.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
Unicode.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
UnicodeCaseFold.cpp Resubmit r325107 (case folding DJB hash) 2018-02-21 22:36:31 +00:00
Valgrind.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
VersionTuple.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
VirtualFileSystem.cpp VFS: Avoid some unnecessary std::string copies 2019-02-23 23:48:47 +00:00
Watchdog.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
WithColor.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
YAMLParser.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
YAMLTraits.cpp [yaml2obj] - Don't crash on invalid inputs. 2019-04-25 09:59:55 +00:00
Z3Solver.cpp New methods to check for under-/overflow in the SMT API 2019-03-27 16:54:12 +00:00
circular_raw_ostream.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
raw_os_ostream.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
raw_ostream.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
regcomp.c Attempt to heal bots after r328970. 2018-04-02 13:49:35 +00:00
regengine.inc [ADT] Replace std::isprint by llvm::isPrint. 2018-07-26 15:31:41 +00:00
regerror.c
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regex2.h Support/reg*.h: Make headers include their dependencies 2017-10-26 20:23:11 +00:00
regex_impl.h Remove trailing space 2018-07-30 19:41:25 +00:00
regexec.c
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regfree.c
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regstrlcpy.c
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regutils.h
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xxhash.cpp Make ICF log output order deterministic. 2018-07-31 18:04:58 +00:00