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LLVM backend for 6502
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Nate Begeman f15485a8d0 SelectionDAGISel can now natively handle Switch instructions, in the same 
manner that the LowerSwitch LLVM to LLVM pass does: emitting a binary
search tree of basic blocks.  The new approach has several advantages:
it is faster, it generates significantly smaller code in many cases, and
it paves the way for implementing dense switch tables as a jump table by
handling switches directly in the instruction selector.

This functionality is currently only enabled on x86, but should be safe for
every target.  In anticipation of making it the default, the cfg is now
properly updated in the x86, ppc, and sparc select lowering code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27156 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-27 01:32:24 +00:00
autoconf Update to llvm-config tool, by Erik Kidd: 2006-03-23 23:21:29 +00:00
docs Fixed some grammer and spelling. 2006-03-24 09:20:27 +00:00
examples Minor corrections. 2006-03-24 03:11:31 +00:00
include/llvm SelectionDAGISel can now natively handle Switch instructions, in the same 2006-03-27 01:32:24 +00:00
lib SelectionDAGISel can now natively handle Switch instructions, in the same 2006-03-27 01:32:24 +00:00
projects Ignored generated files. 2006-03-23 23:53:13 +00:00
runtime Optimizing to calloc() to malloc() + memset() can be bad on some platforms. 2006-03-13 21:22:43 +00:00
test Correct the vandc testcase 2006-03-25 23:12:47 +00:00
tools Get JIT/Interpreter working on Windows again. 2006-03-24 02:53:49 +00:00
utils Add a missing check which cause an invalid .td file to crash tblgen 2006-03-25 22:12:44 +00:00
win32 Get Visual Studio happy again. 2006-03-24 02:18:52 +00:00
Xcode Catch up on some of the file addition/deletions. 2006-01-27 13:24:20 +00:00
.cvsignore Ignore the configure.out file generated by "make reconfigure" 2005-06-18 23:01:25 +00:00
configure Update to llvm-config tool, by Erik Kidd: 2006-03-23 23:21:29 +00:00
CREDITS.TXT Update to llvm-config tool, by Erik Kidd: 2006-03-23 23:21:29 +00:00
LICENSE.TXT Happy New Year, LLVM. 2006-01-03 14:42:06 +00:00
llvm.spec Onward to LLVM-1.6 and beyond! 2005-05-18 20:23:20 +00:00
llvm.spec.in Onward to LLVM-1.6 and beyond! 2005-05-18 20:23:20 +00:00
Makefile For PR614: 2005-08-25 04:59:49 +00:00
Makefile.common Update comments to reflect new variable names. Patch contributed by 2005-02-14 16:02:19 +00:00
Makefile.config.in Update to llvm-config tool, by Erik Kidd: 2006-03-23 23:21:29 +00:00
Makefile.rules Add a facility for invoking the llvm-config tool when linking a program. 2006-03-24 07:36:57 +00:00
README.txt Make the text of this file a little more useful. 2004-09-02 22:49:27 +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.