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Mirror of https://github.com/RPCS3/llvm-mirror
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2c08458e16
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Adam Nemet 2c08458e16 [CFGPrinter] Display branch weight on the edges 
Summary:
This is pretty useful especially in connection with
BFI's -view-block-freq-propagation-dags.  It helped me to track down the
bug that is being fixed in D24118.

While -view-block-freq-propagation-dags displays the high-level
information with static heuristics included (and block frequencies), the
new thing only shows the raw weight as presented by PGO without any of
the static estimates.  This helps to distinguished what has been
measured vs. estimated.

For the sample loop in D24118, -view-block-freq-propagation-dags=integer
looks like this:

https://reviews.llvm.org/F2381352

While with -view-cfg-only you can see the underlying branch weights:

https://reviews.llvm.org/F2392296

Reviewers: dexonsmith, bogner, davidxl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D24144

llvm-svn: 280442
2016-09-02 00:28:26 +00:00
bindings [OCaml] Add functions for accessing metadata nodes. 2016-06-22 03:30:24 +00:00
cmake [CMake] Revive LLVM_*_DIRS variables 2016-09-01 16:43:39 +00:00
docs Make the coding standards a bit more clear that we prefer the fancy new 2016-09-01 22:18:25 +00:00
examples Fix singlton -> singleton typo. 2016-08-26 02:00:21 +00:00
include [CFGPrinter] Display branch weight on the edges 2016-09-02 00:28:26 +00:00
lib [PowerPC] Don't apply the PPC64 address-formation peephole for offsets greater than 7 2016-09-02 00:28:20 +00:00
projects
resources
runtimes [CMake] Connecting check-all and test-depends targets correctly 2016-09-01 18:26:01 +00:00
test [PowerPC] Don't apply the PPC64 address-formation peephole for offsets greater than 7 2016-09-02 00:28:20 +00:00
tools bugpoint: clang-format and modernize comments in ListReducer. NFC 2016-09-01 21:04:36 +00:00
unittests [LLVM/Support] - Create no-arguments constructor for llvm::Regex 2016-09-01 08:00:28 +00:00
utils [lit] Use multiprocessing by default on Windows 2016-09-01 17:19:44 +00:00
.arcconfig Upgrade all the .arcconfigs to https. 2016-07-14 13:15:37 +00:00
.clang-format
.clang-tidy
.gitignore [CMake] Add LLVM runtimes directory 2016-06-23 22:07:21 +00:00
CMakeLists.txt [CMake] Connecting check-all and test-depends targets correctly 2016-09-01 18:26:01 +00:00
CODE_OWNERS.TXT test commit 2016-08-02 19:25:17 +00:00
configure
CREDITS.TXT Shamelessly add myself to CREDITS.TXT 2016-08-04 16:28:22 +00:00
LICENSE.TXT Remove autoconf references from LICENSE.TXT 2016-08-12 20:11:03 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Revert rL277454 2016-08-02 13:26:07 +00:00
RELEASE_TESTERS.TXT Adding RELEASE_TESTERS.TXT 2016-07-21 16:46:44 +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.