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LLVM backend for 6502
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0f65cad57f
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Chris Lattner 0f65cad57f move a bunch of register constraints from being handled by 
getRegClassForInlineAsmConstraint to being handled by
getRegForInlineAsmConstraint.  This allows us to let the llvm register allocator
allocate, which gives us better code.  For example, X86/2007-01-29-InlineAsm-ir.ll
used to compile to:

_run_init_process:
        subl $4, %esp
        movl %ebx, (%esp)
        xorl %ebx, %ebx
        movl $11, %eax
        movl %ebx, %ecx
        movl %ebx, %edx
        # InlineAsm Start
        push %ebx ; movl %ebx,%ebx ; int $0x80 ; pop %ebx
        # InlineAsm End

Now we get:
_run_init_process:
        xorl %ecx, %ecx
        movl $11, %eax
        movl %ecx, %edx
        # InlineAsm Start
        push %ebx ; movl %ecx,%ebx ; int $0x80 ; pop %ebx
        # InlineAsm End


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35804 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-09 05:49:22 +00:00
autoconf Check for .svn directories too to determine if a debug build is appropriate. 2007-04-02 15:40:39 +00:00
docs Rephrase linker explanation. 2007-04-07 17:43:25 +00:00
examples Revert last patch. The examples build now. 2007-03-06 17:26:14 +00:00
include Move isReachableFromEntry out of line to avoid an unnecessary #include 2007-04-09 04:07:36 +00:00
lib move a bunch of register constraints from being handled by 2007-04-09 05:49:22 +00:00
projects avoid collision with /usr/bin/sample if this ever gets installed. 2007-02-18 03:03:41 +00:00
runtime crtend is only for llvm-gcc3, remove it. 2007-02-23 19:34:09 +00:00
test add another test 2007-04-09 05:26:48 +00:00
tools Make TempDir a PathWithStatus so we don't have to cast it to one. 2007-04-08 20:08:01 +00:00
utils Update for PathWithStatus 2007-04-07 19:49:35 +00:00
win32 Track new header file. 2007-04-08 21:19:52 +00:00
Xcode Update project 2007-01-29 18:45:08 +00:00
.cvsignore Add llvm.spec, a generated file. 2006-10-18 19:23:56 +00:00
configure Regenerate. 2007-04-02 15:41:39 +00:00
CREDITS.TXT Add Roman to credits 2007-03-21 21:45:25 +00:00
LICENSE.TXT remove these. 2007-02-25 02:28:21 +00:00
llvm.spec.in Minor technical correction in documentation. 2006-08-21 01:58:57 +00:00
Makefile don't build runtime for now, ever 2007-03-29 18:14:00 +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 For PR789: 2007-03-29 19:05:44 +00:00
Makefile.rules For PR789: 2007-03-29 19:05:44 +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.