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2d20120a2d
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Quentin Colombet 2d20120a2d [RegAllocFast] Don't insert kill flags of super-register for partial kill 
When reusing a register for a new definition, the fast register allocator
used to insert a kill flag at the previous last use of that register to
inform later passes that this register is free between the redef and the
last use. However, this may be wrong when subregisters are involved.
Indeed, a partially redef would have trigger a kill of the full super
register, potentially wrongly marking all the other subregisters as
free. Given we don't track which lanes are still live, we cannot set the
kill flag in such case.

Note: This bug has been latent for about 7 years (r104056).

llvmg.org/PR33677

llvm-svn: 307428
2017-07-07 19:25:45 +00:00
bindings [NFC] Remove multiple semicolons 2017-06-28 23:15:16 +00:00
cmake CMake: Add LLVM_UTILS_INSTALL_DIR option 2017-07-05 12:57:30 +00:00
docs Correct GFX9 processor names. 2017-07-07 03:10:01 +00:00
examples [ORC] Errorize the ORC APIs. 2017-07-07 02:59:13 +00:00
include [RegAllocFast] Add the proper initialize method to use the .mir infrastructure 2017-07-07 19:25:42 +00:00
lib [RegAllocFast] Don't insert kill flags of super-register for partial kill 2017-07-07 19:25:45 +00:00
projects Add temporary workaround to allow in-tree libc++ builds on Windows 2017-05-11 01:44:30 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake][runtimes] Add install target for runtimes builtins 2017-06-02 19:38:11 +00:00
test [RegAllocFast] Don't insert kill flags of super-register for partial kill 2017-07-07 19:25:45 +00:00
tools [llvm-pdbutil] Fix build. 2017-07-07 19:00:06 +00:00
unittests [cloning] Do not duplicate types when cloning functions 2017-07-07 18:24:20 +00:00
utils vim: add 'builtin', 'nobuiltin', 'nonnull', and 'speculatable' to the keyword list. 2017-07-07 18:28:45 +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 Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt CMake: Add LLVM_UTILS_INSTALL_DIR option 2017-07-05 12:57:30 +00:00
CODE_OWNERS.TXT Remove the BBVectorize pass. 2017-06-30 07:09:08 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
README.txt Test commit. Added a blank line. 2017-03-06 20:45:33 +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.