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wlei 0adbe76ec7 [CSSPGO][llvm-profgen] Pseudo probe based CS profile generation 
This change implements profile generation infra for pseudo probe in llvm-profgen. During virtual unwinding, the raw profile is extracted into range counter and branch counter and aggregated to sample counter map indexed by the call stack context. This change introduces the last step and produces the eventual profile. Specifically, the body of function sample is recorded by going through each probe among the range and callsite target sample is recorded by extracting the callsite probe from branch's source.

Please refer https://groups.google.com/g/llvm-dev/c/1p1rdYbL93s and https://reviews.llvm.org/D89707 for more context about CSSPGO and llvm-profgen.

**Implementation**

- Extended `PseudoProbeProfileGenerator` for pseudo probe based profile generation.
- `populateBodySamplesWithProbes` reading range counter is responsible for recording function body samples and inferring caller's body samples.
- `populateBoundarySamplesWithProbes` reading branch counter is responsible for recording call site target samples.
- Each sample is recorded with its calling context(named `ContextId`). Remind that the probe based context key doesn't include the leaf frame probe info, so the `ContextId` string is created from two part: one from the probe stack strings' concatenation and other one from the leaf frame probe.
- Added regression test

Test Plan:

ninja & ninja check-llvm

Differential Revision: https://reviews.llvm.org/D92998
2021-02-03 16:21:53 -08:00
..
bugpoint [tools] Use llvm::append_range (NFC) 2021-01-05 21:15:56 -08:00
bugpoint-passes Reverted the remainings of c1c9819ef91aab51b5a23fb3027adac5a2f551cc 2020-02-11 16:20:06 -08:00
dsymutil [llvm] Drop unnecessary const from return types (NFC) 2021-01-31 10:23:43 -08:00
gold [LTO] Prevent devirtualization for symbols dynamically exported 2021-01-27 15:54:13 -08:00
llc [llc] Add reportError helper and canonicalize error messages 2021-01-26 15:33:37 -08:00
lli [ORC] Move Orc RPC code into Shared, rename some RPC types. 2020-12-30 12:48:20 +11:00
llvm-ar llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-as llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-as-fuzzer Fix several places that were calling verifyFunction or verifyModule without checking the return value. 2020-05-18 13:28:46 -07:00
llvm-bcanalyzer llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-c-test Fixes warning 'enumeration value not handled in switch'. 2020-12-30 06:56:29 -08:00
llvm-cat [tools] Use llvm::append_range (NFC) 2021-01-05 21:15:56 -08:00
llvm-cfi-verify [llvm] Use *Set::contains (NFC) 2021-01-11 18:48:07 -08:00
llvm-config [MinGW] Use lib prefix for libraries 2020-09-12 22:01:29 +03:00
llvm-cov [llvm] Use append_range (NFC) 2021-01-29 23:23:34 -08:00
llvm-cvtres [llvm] Don't include StringSwitch.h where unnecessary (NFC) 2021-01-21 19:59:48 -08:00
llvm-cxxdump llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-cxxfilt Make llvm::StringRef to std::string conversions explicit. 2020-01-28 23:25:25 +01:00
llvm-cxxmap llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-diff Switch from llvm::is_trivially_copyable to std::is_trivially_copyable 2020-12-02 22:02:48 -08:00
llvm-dis llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-dwarfdump [tools] Use llvm::append_range (NFC) 2021-01-05 21:15:56 -08:00
llvm-dwp [llvm-dwp] Automatically set the target triple 2021-01-25 11:58:54 +01:00
llvm-elfabi [llvm-elfabi] Add flag to preserve timestamp when output is the same 2020-12-29 20:27:06 -08:00
llvm-exegesis [llvm] Use *::empty (NFC) 2021-01-16 09:40:55 -08:00
llvm-extract llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-go Reinstate llvm-go to test the go bindings. 2020-02-13 17:24:55 -08:00
llvm-gsymutil [tools] Use llvm::append_range (NFC) 2021-01-05 21:15:56 -08:00
llvm-ifs [llvm] Remove redundant string initialization (NFC) 2021-01-12 21:43:46 -08:00
llvm-isel-fuzzer [AIX] Turn -fdata-sections on by default in Clang 2020-10-14 15:58:31 +00:00
llvm-itanium-demangle-fuzzer Fix file header issues in fuzzers. NFC 2019-02-21 07:57:14 +00:00
llvm-jitlink [llvm-jitlink] Replace use of deprecated gethostbyname by getaddrinfo. 2021-01-29 03:11:16 -06:00
llvm-jitlistener [MCJIT] Profile the code generated by MCJIT engine using Intel VTune profiler 2020-11-16 19:28:14 +11:00
llvm-libtool-darwin llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-link [llvm-link] Improve link time for bitcode archives [NFC] 2021-01-19 16:41:28 -08:00
llvm-lipo [Target] Use llvm::any_of (NFC) 2020-12-24 19:43:26 -08:00
llvm-lto Revert "[LTO] Use lto::backend for code generation." 2021-02-03 22:49:30 +00:00
llvm-lto2 [LTO] Add support for existing Config::Freestanding option. 2021-01-22 13:45:39 +00:00
llvm-mc [llvm][clang][mlir] Add checks for the return values from Target::createXXX to prevent protential null deref 2020-11-21 21:04:12 -08:00
llvm-mc-assemble-fuzzer Add missing include Host.h in llvm-mc-* fuzzers. NFC. 2020-05-18 02:21:22 +07:00
llvm-mc-disassemble-fuzzer Add missing include Host.h in llvm-mc-* fuzzers. NFC. 2020-05-18 02:21:22 +07:00
llvm-mca [llvm-mca] Addressing build failures due to missing override specifiers 2021-01-21 17:32:18 -08:00
llvm-microsoft-demangle-fuzzer Give microsoftDemangle() an outparam for how many input bytes were consumed. 2020-05-20 16:17:31 -04:00
llvm-ml [ms] [llvm-ml] Support command-line defines 2020-12-01 18:06:05 -05:00
llvm-modextract llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-mt llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-nm [NFC][llvm-nm] Fix unused variable warning 2021-01-29 11:42:23 +08:00
llvm-objcopy [llvm-objcopy] -O binary: consider SHT_NOBITS sections to be empty 2021-02-01 15:01:25 -08:00
llvm-objdump [llvm-objdump-macho] print per-second-level-page encodings for option --unwind-info 2021-01-29 21:59:07 -07:00
llvm-opt-fuzzer [FuzzMutate] Add mutator to modify instruction flags. 2021-01-23 19:05:20 +00:00
llvm-opt-report Make llvm::StringRef to std::string conversions explicit. 2020-01-28 23:25:25 +01:00
llvm-pdbutil [llvm] Remove redundant return and continue statements (NFC) 2021-01-14 20:30:34 -08:00
llvm-profdata [CSSPGO] Support of CS profiles in extended binary format. 2021-01-27 21:29:46 -08:00
llvm-profgen [CSSPGO][llvm-profgen] Pseudo probe based CS profile generation 2021-02-03 16:21:53 -08:00
llvm-rc [llvm-rc] Handle driveless absolute windows paths when loading external files 2020-12-10 14:11:06 +02:00
llvm-readobj [yaml2obj/obj2yaml/llvm-readobj] Support SHF_GNU_RETAIN 2021-02-02 09:19:53 -08:00
llvm-reduce [llvm-reduce] ReduceGlobalVarInitializers delta pass: fix handling of globals w/ comdat/non-external linkage 2021-01-07 18:05:03 +03:00
llvm-rtdyld [llvm][clang][mlir] Add checks for the return values from Target::createXXX to prevent protential null deref 2020-11-21 21:04:12 -08:00
llvm-shlib [Support] On Windows, add optional support for {rpmalloc|snmalloc|mimalloc} 2020-08-27 11:09:46 -04:00
llvm-size [llvm-cov] Use is_contained (NFC) 2020-12-27 09:57:25 -08:00
llvm-special-case-list-fuzzer Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
llvm-split [LTO] Update splitCodeGen to take a reference to the module. (NFC) 2021-01-29 11:53:11 +00:00
llvm-stress [tools] Use llvm::append_range (NFC) 2021-01-05 21:15:56 -08:00
llvm-strings llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-symbolizer [llvm-symbolizer] - Fix the crash in GNU output style with --no-inlines and missing input file. 2021-01-30 18:36:38 +03:00
llvm-undname llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
llvm-xray [llvm] Use the default value of drop_begin (NFC) 2021-01-18 10:16:36 -08:00
llvm-yaml-numeric-parser-fuzzer [llvm] Use llvm::erase_value and llvm::erase_if (NFC) 2021-01-02 09:24:15 -08:00
llvm-yaml-parser-fuzzer [llvm] Use llvm::erase_value and llvm::erase_if (NFC) 2021-01-02 09:24:15 -08:00
lto [llvm] Use append_range (NFC) 2021-01-29 23:23:34 -08:00
msbuild vs integration: bump version nbr 2019-06-19 07:39:53 +00:00
obj2yaml [obj2yaml, yaml2obj] Use Hex64 for BBAddressMap fields. 2021-02-01 15:37:30 -08:00
opt [LTO] Prevent devirtualization for symbols dynamically exported 2021-01-27 15:54:13 -08:00
opt-viewer Convert old python3 cgi method into the new html one 2020-03-25 22:38:55 +01:00
remarks-shlib [tools][remarks-shlib] Don't build libRemarks.so without PIC 2020-09-20 12:40:21 +02:00
sancov [Support] Use InitLLVM in llvm-stress, sancov and TableGen 2020-07-28 07:50:45 -04:00
sanstats Internalize functions from various tools. NFC 2020-09-26 15:57:13 -07:00
split-file [split-file] Fix sys::fs::remove() on Solaris after D83834 2020-08-11 08:05:10 -07:00
verify-uselistorder llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
vfabi-demangle-fuzzer [llvm][VectorUtils] Tweak VFShape for scalable vector functions. 2020-01-30 05:53:56 +00:00
xcode-toolchain [CMake] Use LLVM_ENABLE_IDE instead of CMAKE_CONFIGURATION_TYPES 2018-10-15 21:20:02 +00:00
yaml2obj [llvm] Make obj2yaml and yaml2obj LLVM utilities instead of tools 2020-10-19 10:21:21 -07:00
CMakeLists.txt [Flang] add flang as a new subproject in cmake 2020-04-09 16:13:18 +01:00