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LLVM backend for 6502
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327d0651f8
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Scott Michel 327d0651f8 This patch fixes a problem encountered by the CellSPU backend where variants 
were being pruned in patterns where a variable was used more than once, e.g.:

  (or (and R32C:$rA, R32C:$rC), (and R32C:$rB, (not R32C:$rC)))

In this example, $rC is used more than once and is actually significant to
instruction selection pattern matching when commuted variants are produced.
This patch scans the pattern's clauses and collects the variables, creating
a set of variables that are used more than once. TreePatternNode::isIsomorphicTo()
also understands that multiply-used variables are significant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47950 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05 17:49:05 +00:00
autoconf Use AC_PATH_PROG correctly: 2008-03-05 09:28:02 +00:00
bindings Fix a typo noticed by Erick Tryzelaar, 2008-03-04 14:52:05 +00:00
docs update to document new lto API 2008-02-29 19:34:52 +00:00
examples remove attributions from examples. 2007-12-29 20:37:57 +00:00
include Add a target lowering hook to control whether it's worthwhile to compress fp constant. 2008-03-05 01:30:59 +00:00
lib evan implemented this. 2008-03-05 17:11:51 +00:00
projects remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
runtime Fixing the stack walker. 2008-01-24 05:16:36 +00:00
test Fix test not to emit junk into source directory 2008-03-05 15:44:25 +00:00
tools Renable lto2 build. 2008-03-03 17:32:40 +00:00
utils This patch fixes a problem encountered by the CellSPU backend where variants 2008-03-05 17:49:05 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Unbreak build for VC2008. Patch by Argiris Kirtzidis! 2008-02-22 10:11:21 +00:00
Xcode Rename CFEBuildInstrs.html to GCCFEBuildInstrs.html. 2008-02-14 17:53:22 +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
configure Use AC_PATH_PROG correctly: 2008-03-05 09:28:02 +00:00
CREDITS.TXT Update credits. 2007-12-11 09:32:07 +00:00
LICENSE.TXT scoped_ptr.h was removed. 2008-02-09 22:50:06 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile Run 'svn info' in the C locale. Also appropriately escape spaces and ? for gawk in darwin. 2008-02-28 18:46:56 +00:00
Makefile.common remove attributions from the rest of the llvm makefiles. 2007-12-29 20:11:13 +00:00
Makefile.config.in improve compatibility with mingw, patch by Alain Frisch 2008-01-15 22:50:50 +00:00
Makefile.rules Remove inappropriate whitespace, change CVS to SVN where it makes sense. 2008-02-27 13:34:15 +00:00
ModuleInfo.txt Update to include clean and install commands. 2007-07-20 20:54:41 +00:00
README.txt test 2007-04-20 20:49:25 +00:00

README.txt 

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