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LLVM backend for 6502
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35071a0847
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Jakob Stoklund Olesen 35071a0847 Disable physical register coalescing when the number of live ranges for the 
physreg becomes ridiculously high.

std::upper_bound may be log(N), but for sufficiently large live intervals, it
becomes log(N)*cachemiss = a long long time.

This patch improves coalescer time by 4500x for a function with 20000
function calls. The generated code is different, but not significantly worse -
the allocator hints are almost as good as physreg coalescing anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98023 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 00:59:48 +00:00
autoconf Move the docsdir to /usr/share/doc/llvm to match other projects. 2010-03-02 05:17:21 +00:00
bindings Add OCaml tutorial to the examples. 2010-03-08 19:32:27 +00:00
cmake Update CMake LibDeps 2010-01-22 18:14:14 +00:00
docs Start using DIFile. See updated SourceLevelDebugging.html for more information. 2010-03-09 00:44:10 +00:00
examples Don't always run the ocaml kaleidoscope tutorials. 2010-03-08 20:07:32 +00:00
include Start using DIFile. See updated SourceLevelDebugging.html for more information. 2010-03-09 00:44:10 +00:00
lib Disable physical register coalescing when the number of live ranges for the 2010-03-09 00:59:48 +00:00
projects Testing subversion commit access 2010-02-23 15:11:17 +00:00
runtime disable this for mingw as well, we really need a 'has no dynamic linking' predicate. 2010-03-06 18:54:37 +00:00
test Start using DIFile. See updated SourceLevelDebugging.html for more information. 2010-03-09 00:44:10 +00:00
tools Make it not an error to specify -O* options several times. 2010-03-05 04:46:39 +00:00
unittests Stop leaking MDStrings. 2010-03-04 23:24:19 +00:00
utils Revert r97726 and r97728 at ddunbar's request; we want to solve this 2010-03-08 20:02:05 +00:00
website
build-for-llvm-top.sh
CMakeLists.txt Adding MBlaze to cmake target list. 2010-03-05 15:15:55 +00:00
configure Move the docsdir to /usr/share/doc/llvm to match other projects. 2010-03-02 05:17:21 +00:00
CREDITS.TXT Adding the MicroBlaze backend. 2010-02-23 19:15:24 +00:00
LICENSE.TXT
llvm.spec.in
Makefile Try r96559 for the third time. This time the shared library is only built if 2010-02-25 06:34:33 +00:00
Makefile.common
Makefile.config.in Rewrite makefiles to explicitly reference DESTDIR to fix bug 3153. 2010-03-04 20:56:19 +00:00
Makefile.rules Rewrite makefiles to explicitly reference DESTDIR to fix bug 3153. 2010-03-04 20:56:19 +00:00
ModuleInfo.txt
README.txt Give packagers some advice about how to build LLVM so it's useful to 2010-02-26 00:54:42 +00:00

README.txt 

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