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111c228241
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Chris Lattner 111c228241 Compile: 
int %test(ulong *%tmp) {
        %tmp = load ulong* %tmp         ; <ulong> [#uses=1]
        %tmp.mask = shr ulong %tmp, ubyte 50            ; <ulong> [#uses=1]
        %tmp.mask = cast ulong %tmp.mask to ubyte
        %tmp2 = and ubyte %tmp.mask, 3          ; <ubyte> [#uses=1]
        %tmp2 = cast ubyte %tmp2 to int         ; <int> [#uses=1]
        ret int %tmp2
}

to:

_test:
        movl 4(%esp), %eax
        movl 4(%eax), %eax
        shrl $18, %eax
        andl $3, %eax
        ret

instead of:

_test:
        movl 4(%esp), %eax
        movl 4(%eax), %eax
        shrl $18, %eax
        # TRUNCATE movb %al, %al
        andb $3, %al
        movzbl %al, %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30558 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-21 06:14:31 +00:00
autoconf Add a HAVE_MACH_MACH_H #define to detect the presence of the mach/mach.h 2006-09-14 06:17:21 +00:00
docs Make the LLVM Publications link point to /pubs/ since this has moved to 2006-09-17 23:05:15 +00:00
examples Use llvm-config to determine what to link in 2006-09-04 06:04:03 +00:00
include/llvm Fix findCaseDest to return null when BB is both the default dest and one 2006-09-18 20:44:37 +00:00
lib Compile: 2006-09-21 06:14:31 +00:00
projects Fix a race condition in the makefile that broke grawp's tester last night. 2006-08-25 17:15:23 +00:00
runtime Describe and date modifications we made per LGPL requirements. 2006-08-08 14:47:54 +00:00
test new testcase 2006-09-21 05:11:01 +00:00
tools comment out debug code 2006-09-15 23:01:10 +00:00
utils Trim the home directory from the dejagnu test 2006-09-20 09:20:22 +00:00
win32 Keep Visual Studio happy. 2006-05-03 00:28:50 +00:00
Xcode Adding new files. 2006-09-07 22:07:57 +00:00
.cvsignore Ignore stuff built by "make dist". 2006-04-07 15:55:18 +00:00
configure Add a HAVE_MACH_MACH_H #define to detect the presence of the mach/mach.h 2006-09-14 06:17:21 +00:00
CREDITS.TXT The list is sorted by name. 2006-08-29 01:42:47 +00:00
LICENSE.TXT burg is gone 2006-09-11 17:28:11 +00:00
llvm.spec.in Minor technical correction in documentation. 2006-08-21 01:58:57 +00:00
Makefile Document build order dependencies. Make sure that llvm-config is built before 2006-09-04 04:27:07 +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 Make the name of the project consistent with that specified in the 2006-08-07 23:23:39 +00:00
Makefile.rules Fix a build problem 2006-09-04 06:39:52 +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.