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LLVM backend for 6502
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01a2202138
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Chris Lattner 01a2202138 Add support for CombineTo, allowing the dag combiner to replace nodes with 
multiple results.

Use this support to implement trivial store->load forwarding, implementing
CodeGen/PowerPC/store-load-fwd.ll.  Though this is the most simple case and
can be extended in the future, it is still useful.  For example, it speeds
up 197.parser by 6.2% by avoiding an LSU reject in xalloc:

        stw r6, lo16(l5_end_of_array)(r2)
        addi r2, r5, -4
        stwx r5, r4, r2
-       lwzx r5, r4, r2
-       rlwinm r5, r5, 0, 0, 30
        stwx r5, r4, r2
        lwz r2, -4(r4)
        ori r2, r2, 1


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23690 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10 22:04:48 +00:00
autoconf
docs Update the discussion of TargetRegisterDesc 2005-09-30 17:46:55 +00:00
examples
include/llvm remove a comma to compile with pedantic gcc 2005-10-08 01:24:19 +00:00
lib Add support for CombineTo, allowing the dag combiner to replace nodes with 2005-10-10 22:04:48 +00:00
projects Implement PR614: 2005-08-27 18:50:39 +00:00
runtime
test new testcase 2005-10-10 21:57:37 +00:00
tools Speed up isBytecodeLPath from 20s to .01s in common cases. This makes -native 2005-09-23 06:11:24 +00:00
utils put the right labels on the data 2005-10-02 21:51:38 +00:00
win32 Fix VC++ build errors. 2005-09-25 19:04:43 +00:00
Xcode Added targets to speed up build of llc. 2005-09-09 17:50:20 +00:00
.cvsignore
configure
CREDITS.TXT
LICENSE.TXT
llvm.spec
llvm.spec.in
Makefile
Makefile.common
Makefile.config.in
Makefile.rules Add some rules for building preprocessed files 2005-10-05 00:28:41 +00:00
README.txt

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.