RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2025-01-06 12:04:48 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
Old fork of llvm-mirror, used on older RPCS3 builds
88,446 Commits 39 Branches 10 Tags 850 MiB
LLVM 52.9%
C++ 32.7%
Assembly 13.2%
Python 0.4%
C 0.4%
Other 0.3%
e8c161a924
Go to file
Michael Gottesman e8c161a924 Fixed a bug where we were tail calling objc_autorelease causing an object to not be placed into an autorelease pool. 
The reason that this occurs is that tail calling objc_autorelease eventually
tail calls -[NSObject autorelease] which supports fast autorelease. This can
cause us to violate the semantic gaurantees of __autoreleasing variables that
assignment to an __autoreleasing variables always yields an object that is
placed into the innermost autorelease pool.

The fix included in this patch works by:

1. In the peephole optimization function OptimizeIndividualFunctions, always
remove tail call from objc_autorelease.
2. Whenever we convert to/from an objc_autorelease, set/unset the tail call
keyword as appropriate.

*NOTE* I also handled the case where objc_autorelease is converted in
OptimizeReturns to an autoreleaseRV which still violates the ARC semantics. I
will be removing that in a later patch and I wanted to make sure that the tree
is in a consistent state vis-a-vis ARC always.

Additionally some test cases are provided and all tests that have tail call marked
objc_autorelease keywords have been modified so that tail call has been removed.

*NOTE* One test fails due to a separate bug that I am going to commit soon. Thus
I marked the check line TMP: instead of CHECK: so make check does not fail.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172287 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12 01:25:15 +00:00
autoconf Disable -Wuninitialized for gcc 2013-01-09 22:11:13 +00:00
bindings [python] Add markup option to disassembler 2012-12-01 21:57:30 +00:00
cmake Add time getters to the process interface for requesting the elapsed 2013-01-04 23:19:55 +00:00
docs Remove PTX->NVPTX in CodeGenerator document and update its text. 2013-01-11 18:47:10 +00:00
examples Update the examples for the new header file locations. 2013-01-02 11:56:33 +00:00
include Precompute some information about register costs. 2013-01-12 00:54:59 +00:00
lib Fixed a bug where we were tail calling objc_autorelease causing an object to not be placed into an autorelease pool. 2013-01-12 01:25:15 +00:00
projects Clean up the sample include orderings, not that it really matters... 2012-12-04 10:46:21 +00:00
runtime libprofile/CommonProfiling.c: Fix according to C89. 2012-11-02 01:32:02 +00:00
test Fixed a bug where we were tail calling objc_autorelease causing an object to not be placed into an autorelease pool. 2013-01-12 01:25:15 +00:00
tools Added -view-callgraph module pass. 2013-01-11 17:28:14 +00:00
unittests Fix bug in exception table allocation (PR13678) 2013-01-11 16:33:30 +00:00
utils Support for half intrinsics. Pushes MMX into slower encoding path. 2013-01-11 01:45:05 +00:00
.arcconfig Add .arcconfig to the repository. Useful if someone wants to use phabricator's command line tool. 2012-12-01 12:07:58 +00:00
.gitignore Add extra vim swap file pattern 2012-10-09 23:48:34 +00:00
CMakeLists.txt Fix spelling 2012-12-13 15:25:07 +00:00
CODE_OWNERS.TXT R600: Add entry in CODE_OWNERS.TXT 2012-12-19 22:10:35 +00:00
configure Disable -Wuninitialized for gcc 2013-01-09 22:11:13 +00:00
CREDITS.TXT Update my email address. 2012-11-29 21:17:26 +00:00
LICENSE.TXT Add LICENSE.TXT covering contributions made by ARM. 2013-01-07 10:04:49 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Update the root Makefile for VMCore -> IR. Missed by my original search 2013-01-02 09:27:25 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Disable -Wuninitialized for gcc 2013-01-09 22:11:13 +00:00
Makefile.rules Disable -Wuninitialized for gcc 2013-01-09 22:11:13 +00:00
README.txt Update README.txt to more accurately reflect reality. 2013-01-08 02:35:15 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, 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're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.