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Fork of llvm with experimental commits and workarounds for RPCS3
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Evan Cheng 4ebe9b79fa Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue. 
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1                                                                                                                                     
%reg1029<def> = MOV8rr %reg1028                                                                                                                                                      
%reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead>                                                                                                                            
insert => %reg1030<def> = MOV8rr %reg1028                                                                                                                                            
%reg1030<def> = ADD8rr %reg1028<kill>, %reg1029<kill>, %EFLAGS<imp-def,dead>                                                                                                         

In this case, it might not be possible to coalesce the second MOV8rr                                                                                                                 
instruction if the first one is coalesced. So it would be profitable to                                                                                                              
commute it:                                                                                                                                                                          
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1                                                                                                                                     
%reg1029<def> = MOV8rr %reg1028                                                                                                                                                      
%reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead>                                                                                                                            
insert => %reg1030<def> = MOV8rr %reg1029                                                                                                                                            
%reg1030<def> = ADD8rr %reg1029<kill>, %reg1028<kill>, %EFLAGS<imp-def,dead>

llvm-svn: 62954
2009-01-25 03:53:59 +00:00
autoconf Revert r62553 and r62616 due to issues with portability. 2009-01-22 20:09:20 +00:00
bindings Rename getABITypeSize to getTypePaddedSize, as 2009-01-12 20:38:59 +00:00
cmake CMake: Tests PERL availability with PERL_EXECUTABLE variable. 2009-01-22 01:20:31 +00:00
docs Add more documentation mentioning the limitations due to PR2660. 2009-01-24 15:58:40 +00:00
examples reapply Sanjiv's patch to genericize memcpy/memset/memmove to take an 2008-11-21 16:42:48 +00:00
include Introduce two DWARF attribute extentions DW_AT_APPLE_optimized, DW_AT_APPLE_flags. 2009-01-23 22:33:47 +00:00
lib Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue. 2009-01-25 03:53:59 +00:00
projects Add "sample" documentation to sample project. 2008-09-15 05:31:29 +00:00
runtime
test Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue. 2009-01-25 03:53:59 +00:00
tools Perform optional clang building. 2009-01-24 00:00:41 +00:00
unittests Port this test from dejagnu to unit testing. 2009-01-19 18:08:33 +00:00
utils Eliminate a couple of fields from TargetRegisterClass: SubRegClasses and SuperRegClasses. These are not necessary. Also eliminate getSubRegisterRegClass and getSuperRegisterRegClass. These are slow and their results can change if register file names change. Just use TargetLowering::getRegClassFor() to get the right TargetRegisterClass instead. 2009-01-22 09:10:11 +00:00
website
win32 Handful of fixes to the VC project files. 2009-01-22 23:05:37 +00:00
Xcode Remove Stacker.html from Xcode project. 2008-10-14 23:23:59 +00:00
build-for-llvm-top.sh Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
CMakeLists.txt CMake: Option for building with -fPIC. 2008-11-20 19:13:51 +00:00
configure Regenerated configure after backing out 62553 and r62616. 2009-01-22 20:11:17 +00:00
CREDITS.TXT Adding your's truly to CREDITS.TXT 2009-01-19 15:04:29 +00:00
LICENSE.TXT Renamed Google Test license file from COPYING to LICENSE.TXT to match LLVM 2009-01-05 17:42:15 +00:00
llvm.spec.in
Makefile Add targets to support the installation of clang in isolation. 2009-01-19 19:48:23 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.rules Perform optional clang building. 2009-01-24 00:00:41 +00:00
ModuleInfo.txt Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
README.txt Remove extra lines 2008-07-28 20:50:25 +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 HTML documentation provided in docs/index.html for further
assistance with LLVM.