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LLVM backend for 6502
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49743b18f5
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Jakob Stoklund Olesen 49743b18f5 Add an RS_Split2 stage used for loop prevention. 
This mechanism already exists, but the RS_Split2 stage makes it clearer.

When live range splitting creates ranges that may not be making
progress, they are marked RS_Split2 instead of RS_New. These ranges may
be split again, but only in a way that can be proven to make progress.

For local ranges, that means they must be split into ranges used by
strictly fewer instructions.

For global ranges, region splitting is bypassed and the RS_Split2
ranges go straight to per-block splitting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135912 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-25 15:25:43 +00:00
autoconf Combine all MC initialization routines into one. e.g. InitializeX86MCAsmInfo, 2011-07-22 21:58:54 +00:00
bindings Update OCaml bindings. Opaque types are gone, type holders are gone and the 2011-07-09 18:29:33 +00:00
cmake CMake: generalize the system that creates custom targets for 2011-07-25 14:11:55 +00:00
docs Convert GetElementPtrInst to use ArrayRef. 2011-07-25 09:48:08 +00:00
examples Convert ConstantExpr::getGetElementPtr and 2011-07-21 14:31:17 +00:00
include Remove uses of std::vector from TypeBuilder. 2011-07-25 10:32:27 +00:00
lib Add an RS_Split2 stage used for loop prevention. 2011-07-25 15:25:43 +00:00
projects Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
runtime Build and install the archive when building the Apple way. 2011-07-19 23:33:42 +00:00
test Correctly handle <undef> tied uses when rewriting after a split. 2011-07-24 20:23:50 +00:00
tools Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where they belong. 2011-07-23 00:45:41 +00:00
unittests Convert GetElementPtrInst to use ArrayRef. 2011-07-25 09:48:08 +00:00
utils We always bounds check the bit set, there is no need to emit zero bytes at the end. 2011-07-23 02:49:37 +00:00
website
.gitignore Ignore Vim swap files 2011-05-31 21:54:28 +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 Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir 2011-07-21 16:28:51 +00:00
configure Combine all MC initialization routines into one. e.g. InitializeX86MCAsmInfo, 2011-07-22 21:58:54 +00:00
CREDITS.TXT For my ego. 2011-07-15 11:26:11 +00:00
LICENSE.TXT Happy new year. 2011-06-12 15:26:54 +00:00
llvm.spec.in
Makefile Install libprofile_rt.dylib where it's more available for gcov support. 2011-06-10 21:47:14 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in build/configure: Add support for --with-extra-ld-options flag (to provide extra 2011-06-16 22:30:38 +00:00
Makefile.rules TableGen'erated MC lowering for simple pseudo-instructions. 2011-07-08 17:36:35 +00:00
ModuleInfo.txt Remove trailing space. This is just an excuse to poke the 2010-10-05 20:32:15 +00:00
README.txt reverting test commit 2011-05-12 17:38:08 +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.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.