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LLVM backend for 6502
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3e172254c1
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Evan Cheng 3e172254c1 Enhanced heuristic to determine the *best* register to spill. Instead of picking the register with the lowest spill weight. Consider (up to) 2 additional registers with spill weights that are close to the lowest spill weight. The one with fewest defs and uses that conflicts with the current interval (weighted by loop depth) is the spill candidate. 
This is not always a win, but there are much more wins than loses and wins tend to be more noticeable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52554 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-20 21:45:16 +00:00
autoconf For PR1338: rename include/llvm/ADT/ilist and friends to end with ".h" 2008-05-29 17:41:17 +00:00
bindings Remove a duplicative binding. Patch by Mahadevan R. 2008-05-19 05:47:10 +00:00
docs integer types are not primitive, they are derived. 2008-06-20 20:50:48 +00:00
examples API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.) 2008-05-16 19:29:10 +00:00
include Add some methods for querying the nature of a 2008-06-20 18:34:30 +00:00
lib Enhanced heuristic to determine the *best* register to spill. Instead of picking the register with the lowest spill weight. Consider (up to) 2 additional registers with spill weights that are close to the lowest spill weight. The one with fewest defs and uses that conflicts with the current interval (weighted by loop depth) is the spill candidate. 2008-06-20 21:45:16 +00:00
projects remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
runtime Fixing the stack walker. 2008-01-24 05:16:36 +00:00
test Add testcase that checks that DeadArgElim doesn't touch stuff it shouldn't touch. 2008-06-20 15:38:22 +00:00
tools Fix some warnings reported by gcc-4.3. Hopefully 2008-06-19 08:47:31 +00:00
utils - Add "Commutative" property to intrinsics. This allows tblgen to generate the commuted variants for dagisel matching code. 2008-06-16 20:29:38 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 "Just a small update for the project files for adding a missing preprocessor 2008-06-20 05:35:58 +00:00
Xcode Merge LLVMBuilder and FoldingBuilder, calling 2008-04-13 06:22:09 +00:00
build-for-llvm-top.sh Allow the configure options to be set according to the llvm-top options. 2007-08-31 19:53:42 +00:00
configure Regenerate 2008-05-29 17:41:34 +00:00
CREDITS.TXT merge of use-diet branch to trunk 2008-05-10 08:32:32 +00:00
LICENSE.TXT llvmc doesn't exist anymore, and llvmc2 doesn't have a special license file. 2008-06-20 20:05:57 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile For PR1338: rename include/llvm/ADT/ilist and friends to end with ".h" 2008-05-29 17:41:17 +00:00
Makefile.common remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
Makefile.config.in Reverting r48974. See PR2183 for details. 2008-03-31 16:46:23 +00:00
Makefile.rules Warn of potential violations of strict aliasing rules. 2008-06-05 23:00:08 +00:00
ModuleInfo.txt Update to include clean and install commands. 2007-07-20 20:54:41 +00:00
README.txt test 2007-04-20 20:49:25 +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.