llvm-project/llvm
Wei Mi ec19b35179 Remove the restriction that MachineSinking is now stopped by "insert_subreg,
subreg_to_reg, and reg_sequence" instructions.

This is to solve PR28852. The restriction was added at 2010 to make better register
coalescing. We assumed that it was not necessary any more. Testing results on x86
supported the assumption.

We will look closely to any performance impact it will bring and will be prepared
to help analyzing performance problem found on other architectures.

Differential Revision: https://reviews.llvm.org/D23210

llvm-svn: 278384
2016-08-11 18:42:56 +00:00
..
bindings [OCaml] Add functions for accessing metadata nodes. 2016-06-22 03:30:24 +00:00
cmake Remove LLVM_ENABLE_LIBCXXABI 2016-08-04 10:24:48 +00:00
docs [LangRef] Fix formatting (no semantic change) 2016-08-10 21:48:24 +00:00
examples [ExecutionEngine][MCJIT][Orc] Replace RuntimeDyld::SymbolInfo with JITSymbol. 2016-08-01 20:49:11 +00:00
include Remove the restriction that MachineSinking is now stopped by "insert_subreg, 2016-08-11 18:42:56 +00:00
lib If-conversion incorrectly calculates liveness of redefined registers 2016-08-11 18:42:06 +00:00
projects
resources
runtimes [CMake] Add LLVM runtimes directory 2016-06-23 22:07:21 +00:00
test Remove the restriction that MachineSinking is now stopped by "insert_subreg, 2016-08-11 18:42:56 +00:00
tools Add (hopefully last) remaining missing dependences to llvm-lto2 2016-08-11 16:29:47 +00:00
unittests Fix UB in APInt::ashr 2016-08-10 19:50:14 +00:00
utils [vim] Update the llvm.vim syntax file 2016-08-09 18:34:19 +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 Remove LLVM_ENABLE_LIBCXXABI 2016-08-04 10:24:48 +00:00
CODE_OWNERS.TXT test commit 2016-08-02 19:25:17 +00:00
CREDITS.TXT Shamelessly add myself to CREDITS.TXT 2016-08-04 16:28:22 +00:00
LICENSE.TXT Test commit 2016-08-11 18:34:29 +00:00
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
configure
llvm.spec.in

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.