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LLVM backend for 6502
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bc99be10b8
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Chris Lattner bc99be10b8 Teach GVN to invalidate some memdep information when it does an RAUW 
of a pointer.  This allows is to catch more equivalencies.  For example,
the type_lists_compatible_p function used to require two iterations of
the gvn pass (!) to delete its 18 redundant loads because the first pass
would CSE all the addressing computation cruft, which would unblock the
second memdep/gvn passes from recognizing them.  This change allows
memdep/gvn to catch all 18 when run just once on the function (as is 
typical :) instead of just 3.

On all of 403.gcc, this bumps up the # reundandancies found from:

     63 gvn    - Number of instructions PRE'd
 153991 gvn    - Number of instructions deleted
  50069 gvn    - Number of loads deleted
to:
     63 gvn    - Number of instructions PRE'd
 154137 gvn    - Number of instructions deleted
  50185 gvn    - Number of loads deleted

+120 loads deleted isn't bad.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60799 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09 22:06:23 +00:00
autoconf Revert accidental last patch 2008-11-20 04:28:08 +00:00
bindings PR2731: C and Ocaml bindings for setTailCall and isTailCall. 2008-08-30 16:34:54 +00:00
cmake Fix a link issue I ran into trying compiling LLVM on MinGW with CMake. 2008-11-30 02:42:05 +00:00
docs Man page typo fix. 2008-12-09 14:41:00 +00:00
examples reapply Sanjiv's patch to genericize memcpy/memset/memmove to take an 2008-11-21 16:42:48 +00:00
include Teach GVN to invalidate some memdep information when it does an RAUW 2008-12-09 22:06:23 +00:00
lib Teach GVN to invalidate some memdep information when it does an RAUW 2008-12-09 22:06:23 +00:00
projects Add "sample" documentation to sample project. 2008-09-15 05:31:29 +00:00
runtime Fixing the stack walker. 2008-01-24 05:16:36 +00:00
test Fix PR3117: not all nodes being legalized. The 2008-12-09 21:33:20 +00:00
tools Support -emit-llvm properly (with -S and -c). 2008-12-09 14:40:18 +00:00
utils Make 'extern' an option property. 2008-12-07 16:47:12 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Add files to VC++ projects. 2008-11-13 21:18:54 +00:00
Xcode Remove Stacker.html from Xcode project. 2008-10-14 23:23:59 +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
CMakeLists.txt CMake: Option for building with -fPIC. 2008-11-20 19:13:51 +00:00
configure Add XCore backend. 2008-11-07 10:59:00 +00:00
CREDITS.TXT Keep CREDITS.TXT sorted by name. 2008-11-07 12:44:36 +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
Makefile Proper way of doing llvm canadian-cross compilation. 2008-11-10 07:33:13 +00:00
Makefile.common remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
Makefile.config.in Use spaces rather than tab. 2008-10-22 09:42:14 +00:00
Makefile.rules Fix PR3117: not all nodes being legalized. The 2008-12-09 21:33:20 +00:00
ModuleInfo.txt
README.txt Remove extra lines 2008-07-28 20:50:25 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

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