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LLVM backend for 6502
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e233b8c64b
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Chris Lattner e233b8c64b Eliminate generality that is not buying us anything. In particular, this 
will cause us to miss cases where the input pointer to a load could be value
numbered to another load.  Something like this:


  %X = load int* %P1
  %Y = load int* %P2

Those are obviously the same if P1/P2 are the same.  The code this patch
removes attempts to handle that.  However, since GCSE iterates, this doesn't
actually buy us anything: GCSE will first replace P1 or P2 with the other
one, then the load can be value numbered as equal.

Removing this code speeds up gcse a lot.  On 176.gcc in debug mode, this
speeds up gcse from 29.08s -> 25.73s, a 13% savings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19906 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29 06:11:16 +00:00
autoconf let configure recognize Alphas 2005-01-24 17:33:52 +00:00
docs noteworthy. 2005-01-29 00:44:22 +00:00
examples Use LLVMLIBS=JIT to get JIT libraries 2004-11-29 07:17:18 +00:00
include/llvm Memory used is a delta between memuse at the start of the time and the 2005-01-29 05:21:16 +00:00
lib Eliminate generality that is not buying us anything. In particular, this 2005-01-29 06:11:16 +00:00
projects Update per new Makefile requirements for projects 2005-01-16 02:21:42 +00:00
runtime Hrm, who knows what 'uint' is, but it seems to work sometimes? Wierd. 2005-01-28 19:37:35 +00:00
test New testcase. 2005-01-28 19:08:32 +00:00
tools Add support for fp tolerances 2005-01-23 03:45:26 +00:00
utils This method takes sys::Path objects now. 2005-01-23 03:32:16 +00:00
win32 Unbreak VC++ build 2005-01-29 03:32:49 +00:00
.cvsignore Ignore the autom4te.cache directoy. 2004-12-24 15:11:23 +00:00
configure let configure recognize Alphas 2005-01-24 17:25:41 +00:00
CREDITS.TXT Add MMC 2004-11-18 21:04:21 +00:00
LICENSE.TXT Another year, another copyright update. 2005-01-08 19:10:44 +00:00
llvm.spec Updated for 1.3. 2004-08-16 15:17:40 +00:00
llvm.spec.in Updated for 1.3. 2004-08-16 15:17:40 +00:00
Makefile Remove the check target. Its now in Makefile.rules 2004-12-06 05:35:00 +00:00
Makefile.common Make this file capable of being used by both LLVM and its projects 2005-01-16 02:20:30 +00:00
Makefile.config.in Don't confuse the LLVM_OBJ_DIR and the PROJ_OBJ_DIR because there might be 2005-01-16 06:53:48 +00:00
Makefile.rules Fix some typos in the Makefile.rules. 2005-01-28 19:52:32 +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)
================================

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