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9e1b62af44
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Easwaran Raman 9e1b62af44 Improve PGO support for the new inliner 
This adds the following to the new PM based inliner in PGO mode:

* Use block frequency analysis to derive callsite's profile count and use
that to adjust thresholds of hot and cold callsites.

* Incrementally update the BFI of the caller after a callee gets inlined
into it. This incremental update is only within an invocation of the run
method - BFI is not preserved across calls to run.
Update the function entry count of the callee after inlining it into a
caller.

* I've tuned the thresholds for the hot and cold callsites using a hacked
up version of the old inliner that explicitly computes BFI on a set of
internal benchmarks and spec. Once the new PM based pipeline stabilizes
(IIRC Chandler mentioned there are known issues) I'll benchmark this
again and adjust the thresholds if required.
Inliner PGO support.

Differential revision: https://reviews.llvm.org/D28331

llvm-svn: 292666
2017-01-20 22:44:04 +00:00
bindings Fix go bindings after r289702 (hopefully, don't really know how to build 2016-12-15 06:54:29 +00:00
cmake cmake: Only sanitize use-after-scope if the host compiler supports it 2017-01-18 19:01:58 +00:00
docs docs: Document that !absolute_symbol { all-ones, all-ones } means the full set. 2017-01-20 21:56:37 +00:00
examples BrainF example: fixing output buffering issue 2017-01-17 13:27:28 +00:00
include Improve PGO support for the new inliner 2017-01-20 22:44:04 +00:00
lib Improve PGO support for the new inliner 2017-01-20 22:44:04 +00:00
llvm/Target/GlobalISel Re-commit: [globalisel] Tablegen-erate current Register Bank Information 2017-01-19 11:15:55 +00:00
projects [CMake] Correct configuration order of the sub-projects based on ther dependancies 2016-10-09 20:38:29 +00:00
resources
runtimes [CMake] Handle common options for runtimes build 2017-01-10 19:47:05 +00:00
test Improve PGO support for the new inliner 2017-01-20 22:44:04 +00:00
tools [pdb] Write the Named Stream mapping to Yaml and binary. 2017-01-20 22:42:09 +00:00
unittests [pdb] Write the Named Stream mapping to Yaml and binary. 2017-01-20 22:42:09 +00:00
utils [globalisel] Fix an unused variable warning when NDEBUG is defined. 2017-01-20 21:40:05 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format
.clang-tidy
.gitignore [AVR] Add the integrated testing tool to the .gitignore 2016-12-14 11:47:14 +00:00
CMakeLists.txt Bump trunk version to 5.0.0svn 2017-01-12 21:22:36 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take ownership of IR Linker as discussed on llvm-dev 2016-12-02 14:06:53 +00:00
configure
CREDITS.TXT Revert revision 289721. 2016-12-14 21:58:42 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Test commit, deleted empty line at the end of README.txt 2016-11-07 18:31:21 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

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.