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Mirror of https://github.com/RPCS3/llvm-mirror
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Richard Sandiford 32c979f9e1 [SystemZ] Postpone NI->RISBG conversion to convertToThreeAddress() 
r186399 aggressively used the RISBG instruction for immediate ANDs,
both because it can handle some values that AND IMMEDIATE can't,
and because it allows the destination register to be different from
the source.  I realized later while implementing the distinct-ops
support that it would be better to leave the choice up to
convertToThreeAddress() instead.  The AND IMMEDIATE form is shorter
and is less likely to be cracked.

This is a problem for 32-bit ANDs because we assume that all 32-bit
operations will leave the high word untouched, whereas RISBG used in
this way will either clear the high word or copy it from the source
register.  The patch uses the z196 instruction RISBLG for this instead.

This means that z10 will be restricted to NILL, NILH and NILF for
32-bit ANDs, but I think that should be OK for now.  Although we're
using z10 as the base architecture, the optimization work is going
to be focused more on z196 and zEC12.

llvm-svn: 187492
2013-07-31 11:36:35 +00:00
autoconf Remove dead or useless header checks from cmake and autoconf 2013-07-26 16:54:23 +00:00
bindings We're in 3.4 land now. 2013-05-07 20:31:28 +00:00
cmake Make sure that -gsplit-dwarf isn't passed to the linker. 2013-07-30 22:34:30 +00:00
docs Fix underscore to be the proper length. 2013-07-30 08:26:24 +00:00
examples ExceptionDemo.cpp: Tweak a @param. [-Wdocumentation] 2013-07-29 11:03:50 +00:00
include Make these just inline, not static inline. 2013-07-30 22:35:06 +00:00
lib [SystemZ] Postpone NI->RISBG conversion to convertToThreeAddress() 2013-07-31 11:36:35 +00:00
projects [PowerPC] Support powerpc64le as a syntax-checking target. 2013-07-26 01:35:43 +00:00
runtime Remove dead code from the makefile build system. 2013-07-25 20:25:31 +00:00
test [SystemZ] Postpone NI->RISBG conversion to convertToThreeAddress() 2013-07-31 11:36:35 +00:00
tools Add support for the 's' operation to llvm-ar. 2013-07-29 12:40:31 +00:00
unittests Fix ptr vector inconsistency in CreatePointerCast 2013-07-31 00:17:33 +00:00
utils Fix register pressure tables on ARM. 2013-07-31 03:24:31 +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 Add capability for building with -gsplit-dwarf to the cmake build. 2013-07-30 21:44:10 +00:00
CODE_OWNERS.TXT Add more owners to CODE_OWNERS.TXT (Kostya Serebryany: AddressSanitizer and ThreadSanitizer; Evgeniy Stepanov: MemorySanitizer) 2013-06-27 08:47:12 +00:00
configure Regenerate. 2013-07-26 17:13:47 +00:00
CREDITS.TXT Identify me on IRC. 2013-06-18 22:09:36 +00:00
LICENSE.TXT Be more specific and capitalize filenames. 2013-05-21 21:22:34 +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 Fix regular expression used by 'make update' to only look for 'I' and '?' at the start of svn info results and to check for spaces after 'I' instead of just after '?'. 2013-07-03 14:48:37 +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 Add an autoconf option for turning on -gsplit-dwarf by default 2013-06-25 01:12:25 +00:00
Makefile.rules Remove dead code from the makefile build system. 2013-07-25 20:25:31 +00:00
README.txt test 2013-04-17 05:34:03 +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.