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Hongtao Yu 29e34b908b [CSSPGO][llvm-profgen] Always report dangling probes for frames with real samples. 
Report dangling probes for frames that have real samples collected. Dangling probes are the probes associated to an empty block. When reported, sample count on a dangling probe will not be trusted by the compiler and we will rely on the counts inference algorithm to get the probe a reasonable count. This actually fixes a bug where previously only those dangling probes with samples collected were reported.

This patch also fixes two existing issues. Pseudo probes are stored in `Address2ProbesMap` and their pointers are used in `PseudoProbeInlineTree`. Previously `std::vector` was used to store probes and the pointers to probes may get obsolete as the vector grows. I'm changing `std::vector` to `std::list` instead.

The other issue is that all outlined functions shared the same inline frame previously due to the unchanged `Index` value as the dummy inlineSite identifier.

Good results seen for SPEC2017 in general regarding profile quality.

Reviewed By: wenlei, wlei

Differential Revision: https://reviews.llvm.org/D100235
2021-04-21 18:07:58 -07:00
benchmarks
bindings [NFC][OCaml] Reformat to clean up following CAMLprim removal 2021-04-05 10:55:08 +01:00
cmake [CMake][llvm] avoid changing global flags (may be used outside of llvm) 2021-04-20 16:06:25 -07:00
docs [NFC] fixed link in documentation 2021-04-21 10:17:03 +02:00
examples [Orc][examples] Add missing FileCheck for lit test and polish output 2021-04-07 11:12:20 +02:00
include [CSSPGO][llvm-profgen] Always report dangling probes for frames with real samples. 2021-04-21 18:07:58 -07:00
lib [IR][sanitizer] Set nounwind on module ctor/dtor, additionally set uwtable if -fasynchronous-unwind-tables 2021-04-21 15:58:20 -07:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [runtimes] Add the libc project to the list of runtimes. 2021-03-23 17:33:03 +00:00
test [CSSPGO][llvm-profgen] Always report dangling probes for frames with real samples. 2021-04-21 18:07:58 -07:00
tools [CSSPGO][llvm-profgen] Always report dangling probes for frames with real samples. 2021-04-21 18:07:58 -07:00
unittests [AsmParser][ms][X86] Fix possible misbehaviour in parsing of special tokens at start of string. 2021-04-21 10:21:09 -04:00
utils [gn build] add llvm-profgen to gn build 2021-04-21 11:50:41 -04:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore Remove .gitignore entries not relevant in the monorepo. 2021-04-07 12:25:02 -07:00
CMakeLists.txt [mlgo] fix build rules 2021-04-03 12:49:03 -07:00
CODE_OWNERS.TXT [M68k][CODE_OWNERS](0/8) Add code owner for the M68k target 2021-03-08 12:30:56 -08:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Update personal info in CREDITS.TXT 2021-04-11 19:25:02 +08:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

README.txt 

The LLVM Compiler Infrastructure
================================

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.