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LLVM backend for 6502
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Chris Lattner cf078f2b20 Allow loop-idiom to run on multiple BB loops, but still only scan the loop 
header for now for memset/memcpy opportunities.  It turns out that loop-rotate
is successfully rotating loops, but *DOESN'T MERGE THE BLOCKS*, turning "for 
loops" into 2 basic block loops that loop-idiom was ignoring.

With this fix, we form many *many* more memcpy and memsets than before, including
on the "history" loops in the viterbi benchmark, which look like this:

        for (j=0; j<MAX_history; ++j) {
          history_new[i][j+1] = history[2*i][j];
        }

Transforming these loops into memcpy's speeds up the viterbi benchmark from
11.98s to 3.55s on my machine.  Woo.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122685 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-02 07:58:36 +00:00
autoconf autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
bindings Fix OCaml bindings crash, PR8847. 2010-12-23 15:49:26 +00:00
cmake CMake (MSVC): cmake automatically adds the /EHsc and /GR compiler 2010-12-31 19:10:49 +00:00
docs Correct a bunch of mistakes which meant that the example pass didn't 2011-01-01 17:37:07 +00:00
examples Do not re-test for the existence of pthread.h. 2010-12-23 21:27:22 +00:00
include Remove the #ifdef'd code for balancing the eval-link data structure. It doesn't 2011-01-02 07:53:49 +00:00
lib Allow loop-idiom to run on multiple BB loops, but still only scan the loop 2011-01-02 07:58:36 +00:00
projects
runtime
test Allow loop-idiom to run on multiple BB loops, but still only scan the loop 2011-01-02 07:58:36 +00:00
tools autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
unittests fix PR8867: a crash handling fp128. Thanks to Nick for the testcase. 2010-12-29 01:33:36 +00:00
utils Trailing whitespace. 2010-12-24 05:06:32 +00:00
website
.gitignore Cleanup and document .gitignore. 2010-12-17 17:22:50 +00:00
build-for-llvm-top.sh
CMakeLists.txt New cmake option LLVM_APPEND_VC_REV for controlling when the VC 2010-12-20 09:47:13 +00:00
configure autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
CREDITS.TXT Another git svn dcommit test. This time let's hope it doesn't kill my repo. 2010-12-10 14:45:10 +00:00
LICENSE.TXT 2010 is upon us. 2010-01-09 18:40:31 +00:00
llvm.spec.in
Makefile
Makefile.common
Makefile.config.in autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
Makefile.rules
ModuleInfo.txt Remove trailing space. This is just an excuse to poke the 2010-10-05 20:32:15 +00:00
README.txt Undoing test commit blank space. 2010-09-29 17:39:29 +00:00

README.txt 

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

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