File age measurements show the distribution of file ages (days since the first commit) and the recency of file updates (days since the latest commit).

Summary

Number of files: 3744
Daily file updates (only one update per file and date counted): 11688
First update: 2017-01-03
Latest update: 2022-01-28
Days between first and latest update: 1852 (264 weeks, estimated 1320 working days)
Active days (at least one file change): 1137
Data:

Organized per file

File Change History Overall

File Age Distribution Overall

Days since first update

There are 3,692 files with 1,462,927 lines of code in files.

3,577 files that are 366+ days old (1,424,280 lines of code)
13 files that are 181-365 days old (2,479 lines of code)
85 files that are 91-180 days old (34,096 lines of code)
11 files that are 31-90 days old (639 lines of code)
6 files that are 1-30 days old (1,433 lines of code)

Legend:

366+

181-365

91-180

31-90

1-30

Latest Change Distribution Overall

Days since last update

There are 3,692 files with 1,462,927 lines of code in files.

3,251 files have been last changed 366+ days ago (1,058,922 lines of code)
88 files have been last changed 181-365 days ago (52,427 lines of code)
190 files have been last changed 91-180 days ago (137,039 lines of code)
83 files have been last changed 31-90 days ago (105,372 lines of code)
80 files have been last changed 1-30 days ago (109,167 lines of code)

Legend:

366+

181-365

91-180

31-90

1-30

File Change History per File Extension

ll, cpp, hlsl, h, c, txt, py, s, rst, cfg, hlsli, xml, inc, cmake, cu, yaml, in, cs, sh, cc, cl, cmd, md, pl, targets, asm, json, bat, resx, yml, js, ps1, html, clang-format, inl, TXT, plist, hpp, css, natvis, man, gitignore, el, clang-tidy, regex, S, arcconfig, csproj, gitmodules, xsd, gitattributes, applescript, ini, obj

File Age Distribution per Extension

Days since first update

366+

181-365

91-180

31-90

1-30

Latest Change Distribution per Extension

Days since last update

366+

181-365

91-180

31-90

1-30

File Change History per Logical Decomposition

primary

primary (file age distribution)

Days since first update

366+

181-365

91-180

31-90

1-30

primary (latest change distribution)

Days since last update

366+

181-365

91-180

31-90

1-30

Oldest Files (Top 20)

File	# lines	# units	last modified (days ago)	created (days ago)	# changes
CGHLSLMS.cpp in tools/clang/lib/CodeGen	5172	94	11	1854	229
CompilerTest.cpp in tools/clang/unittests/HLSL	3036	61	11	1854	231
DxilGenerationPass.cpp in lib/HLSL	732	20	136	1854	137
ExecutionTest.cpp in tools/clang/unittests/HLSL	7824	144	228	1853	101
DxilValidation.cpp in lib/HLSL	5152	114	3	1853	166
ValidationTest.cpp in tools/clang/unittests/HLSL	3533	52	11	1853	118
hctdb.py in utils/hct	2784	45	6	1853	179
ShaderOpTest.cpp in tools/clang/unittests/HLSL	2055	89	276	1853	42
ShaderOpTest.h in tools/clang/unittests/HLSL	250	5	276	1853	23
cmd hctstart.cmd in utils/hct	208	-	136	1853	24
DxilValidation.h in include/dxc/HLSL	79	-	90	1853	61
DxilContainerTest.cpp in tools/clang/unittests/HLSL	1651	40	11	1850	68
DxilSignatureAllocator.h in include/dxc/HLSL	110	17	983	1850	20
ScalarReplAggregatesHLSL.cpp in lib/Transforms/Scalar	4756	115	6	1847	175
HLOperationLower.cpp in lib/HLSL	6797	72	10	1844	194
HLMatrixLowerPass.cpp in lib/HLSL	1139	19	61	1844	73
dxcompilerobj.cpp in tools/clang/tools/dxcompiler	1460	33	11	1843	180
hctdb_instrhelp.py in utils/hct	1253	102	28	1840	62
SemaHLSL.cpp in tools/clang/lib/Sema	11000	249	5	1839	195
dxcrewriteunused.cpp in tools/clang/tools/libclang	1448	45	108	1839	48

Files Not Recently Changed (Top 20)

File	# lines	# units	last modified (days ago)	created (days ago)	# changes
__init__.py in utils/llvm-build/llvmbuild	1	-	1832	1832	1
__init__.py in tools/clang/bindings/python/clang	2	-	1832	1832	1
SubEngine.cpp in tools/clang/lib/StaticAnalyzer/Core	3	1	1832	1832	1
SemaConsumer.cpp in tools/clang/lib/Sema	3	1	1832	1832	1
PPCallbacks.cpp in tools/clang/lib/Lex	3	1	1832	1832	1
ChainedDiagnosticConsumer.cpp in tools/clang/lib/Frontend	3	1	1832	1832	1
Dominators.cpp in tools/clang/lib/Analysis	3	1	1832	1832	1
IntrusiveRefCntPtr.cpp in lib/Support	3	1	1832	1832	1
GVMaterializer.cpp in lib/IR	3	-	1832	1832	1
FuzzerSanitizerOptions.cpp in lib/Fuzzer	3	-	1832	1832	1
varargs.h in tools/clang/lib/Headers	4	-	1832	1832	1
CodeInjector.cpp in tools/clang/lib/Analysis	4	-	1832	1832	1
MemoryObject.cpp in lib/Support	4	-	1832	1832	1
MCSymbolizer.cpp in lib/MC	4	-	1832	1832	1
GCMetadataPrinter.cpp in lib/CodeGen	4	-	1832	1832	1
libllvm.cpp in tools/llvm-shlib	5	-	1832	1832	1
stdnoreturn.h in tools/clang/lib/Headers	5	-	1832	1832	1
TargetSelectionDAGInfo.cpp in lib/CodeGen/SelectionDAG	5	-	1832	1832	1
AIXDataTypesFix.h in include/llvm/Support	5	-	1832	1832	1
Watchdog.inc in lib/Support/Windows	6	-	1832	1832	1

Most Recently Created Files (Top 20)

File	# lines	# units
natvis clang.natvis in tools/clang/utils	375	-
GenLibDeps.pl in utils	315	1
gen.cc in tools/clang/utils/VtableTest	275	6
natvis llvm.natvis in utils	221	-
man dxcetw.man in include/dxc/Tracing	218	-
cmake LLVM-Config.cmake in cmake/modules	214	-
el clang-completion-mode.el in tools/clang/utils	214	-
cmake AddOCaml.cmake in cmake/modules	170	-
el clang-format.el in tools/clang/tools/clang-format	150	-
cmake TableGen.cmake in cmake/modules	112	-
cmake GetSVN.cmake in cmake/modules	104	-
UpdateCMakeLists.pl in utils	99	5
cmake ChooseMSVCCRT.cmake in cmake/modules	94	-
cmake FindOCaml.cmake in cmake/modules	88	-
cmake LLVMProcessSources.cmake in cmake/modules	86	-
cmake VersionFromVCS.cmake in cmake/modules	86	-
cmd hcttrace.cmd in utils/hct	73	-
cmake iOS.cmake in cmake/platforms	69	-
cmake CheckAtomic.cmake in cmake/modules	63	-
cmake AddSphinxTarget.cmake in cmake/modules	56	-

Most Recently Changed Files (Top 20)

File	# lines	# units
natvis clang.natvis in tools/clang/utils	375	-
GenLibDeps.pl in utils	315	1
gen.cc in tools/clang/utils/VtableTest	275	6
natvis llvm.natvis in utils	221	-
man dxcetw.man in include/dxc/Tracing	218	-
cmake LLVM-Config.cmake in cmake/modules	214	-
el clang-completion-mode.el in tools/clang/utils	214	-
cmake AddOCaml.cmake in cmake/modules	170	-
el clang-format.el in tools/clang/tools/clang-format	150	-
cmake TableGen.cmake in cmake/modules	112	-
cmake GetSVN.cmake in cmake/modules	104	-
UpdateCMakeLists.pl in utils	99	5
cmake ChooseMSVCCRT.cmake in cmake/modules	94	-
cmake FindOCaml.cmake in cmake/modules	88	-
cmake LLVMProcessSources.cmake in cmake/modules	86	-
cmake VersionFromVCS.cmake in cmake/modules	86	-
cmd hcttrace.cmd in utils/hct	73	-
cmake iOS.cmake in cmake/platforms	69	-
cmake CheckAtomic.cmake in cmake/modules	63	-
cmake AddSphinxTarget.cmake in cmake/modules	56	-