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LLVM backend for 6502
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Jakob Stoklund Olesen ead06be02f Use readsWritesVirtualRegister instead of counting uses and defs when inserting 
spills and reloads.

This means that a partial define of a register causes a reload so the other
parts of the register are preserved.

The reload can be prevented by adding an <imp-def> operand for the full
register. This is already done by the coalescer and live interval analysis where
relevant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105369 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-03 00:07:47 +00:00
autoconf Fix a spello affecting platforms where the configure check fails. 2010-06-01 16:22:27 +00:00
bindings add attributes and module level asm to the ocaml bindings, 2010-04-10 17:52:58 +00:00
cmake Tell Valgrind when we modify already-executed machine code so it knows 2010-03-15 04:57:55 +00:00
docs Update the documentation, getCalleeSavedRegClasses is not required anymore. 2010-06-02 14:03:11 +00:00
examples Remove the -enable-sjlj-eh option, which doesn't do anything. 2010-05-02 15:36:26 +00:00
include Slightly change the meaning of the reMaterialize target hook when the original 2010-06-02 22:47:25 +00:00
lib Use readsWritesVirtualRegister instead of counting uses and defs when inserting 2010-06-03 00:07:47 +00:00
projects
runtime Delete a blank line. 2010-04-16 13:32:55 +00:00
test Enable machine cse of instructions which define physical registers. 2010-06-02 01:08:27 +00:00
tools Eliminate some unnessary Path::exists() calls. 2010-05-27 20:51:54 +00:00
unittests Update Readme and Makefiles for the new gtest. 2010-06-02 22:02:57 +00:00
utils Update Readme and Makefiles for the new gtest. 2010-06-02 22:02:57 +00:00
website
build-for-llvm-top.sh
CMakeLists.txt CMake: Add options for using static runtime on MSVC++ build. 2010-03-18 13:52:05 +00:00
configure Fix a spello affecting platforms where the configure check fails. 2010-06-01 16:22:27 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
Makefile Update for CIndex rename. 2010-04-30 23:36:47 +00:00
Makefile.common
Makefile.config.in Delete unused variables (that weren't even getting expanded). 2010-06-01 17:26:14 +00:00
Makefile.rules Freebsd's sed doesn't support \< in regexps, and GNU sed doesn't 2010-06-01 17:08:56 +00:00
ModuleInfo.txt
README.txt Give packagers some advice about how to build LLVM so it's useful to 2010-02-26 00:54:42 +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
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If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.