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Jinsong Ji 492d07257d [RegisterClassInfo] Return non-zero for RC without allocatable reg 
In some case, the RC may have 0 allocatable reg.
eg: VRSAVERC in PowerPC, which has only 1 reg, but it is also reserved.

The curreent implementation will keep calling the computePSetLimit because
getRegPressureSetLimit assume computePSetLimit will return a non-zero value.

The fix simply early return the value from TableGen for such special case.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D92907
2021-01-05 16:18:34 +00:00
benchmarks
bindings [Go] Fix bindings/go/llvm/IRBindings.cpp 2020-12-16 10:09:58 -08:00
cmake [ASTMatchers] Fix build when no targets are enabled 2021-01-05 14:40:35 +00:00
docs [Coverage] Add support for Branch Coverage in LLVM Source-Based Code Coverage 2021-01-05 09:51:51 -06:00
examples [NFC] Reduce include files dependency and AA header cleanup (part 2). 2020-12-17 14:04:48 +03:00
include [Coverage] Add support for Branch Coverage in LLVM Source-Based Code Coverage 2021-01-05 09:51:51 -06:00
lib [RegisterClassInfo] Return non-zero for RC without allocatable reg 2021-01-05 16:18:34 +00:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [OpenMP] Fixed the issue that CMake variables for OpenMP were not passed through when building OpenMP with LLVM_ENABLE_RUNTIMES 2020-12-20 18:40:12 -05:00
test [RegisterClassInfo] Return non-zero for RC without allocatable reg 2021-01-05 16:18:34 +00:00
tools [Coverage] Add support for Branch Coverage in LLVM Source-Based Code Coverage 2021-01-05 09:51:51 -06:00
unittests [ValueTracking] isGuaranteedNotToBePoison should return true on undef 2021-01-05 06:50:02 +09:00
utils [gn build] Port fec1a442e3b 2021-01-05 15:34:25 +00:00
.clang-format
.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 [clangd] Store index in '.cache/clangd/index' instead of '.clangd/index' 2020-07-07 14:53:45 +02:00
CMakeLists.txt Remove Python2 fallback and only advertise Python3 in the doc 2020-12-17 15:40:16 +01:00
CODE_OWNERS.TXT [CODE_OWNERS.TXT] Update to include yours truly as the TableGen owner 2020-11-12 09:49:00 -05:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT [NFC] Add contributors names to CREDITS.TXT 2020-10-07 13:22:55 -04:00
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.