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LLVM backend for 6502
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Duncan Sands 33756f96d7 Reduce the number of dom queries made by GVN's conditional propagation 
logic by half: isOnlyReachableViaThisEdge was trying to be clever and
handle the case of a branch to a basic block which is contained in a
loop.  This costs a domtree lookup and is completely useless due to
GVN's position in the pass pipeline: all loops have preheaders at this
point, which means it is enough for isOnlyReachableViaThisEdge to check
that Dst has only one predecessor.  (I checked this theoretical argument
by running over the entire nightly testsuite, and indeed it is so!).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149838 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-05 18:25:50 +00:00
autoconf autoconf: put generated clang files in build dir 2012-02-04 03:00:50 +00:00
bindings Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
cmake CMake: Add the folder "Tablegenning" on llvm-tblgen targets. 2012-01-30 03:01:03 +00:00
docs Fix typo and broken link 2012-02-05 11:17:49 +00:00
examples Update to the new EH system...remove OLD EH code. 2012-02-04 00:29:12 +00:00
include Begin fleshing out more convenience predicates in llvm::Triple and 2012-02-05 08:26:40 +00:00
lib Reduce the number of dom queries made by GVN's conditional propagation 2012-02-05 18:25:50 +00:00
projects Replace the old --with-cxx-* configure options with a single --with-gcc-toolchain 2012-02-03 00:59:30 +00:00
runtime LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
test Reduce the number of dom queries made by GVN's conditional propagation 2012-02-05 18:25:50 +00:00
tools reapply the patches reverted in r149470 that reenable ConstantDataArray, 2012-02-05 02:29:43 +00:00
unittests RefCountedBaseVPTR needs the IntrusiveRefCntPtrInfo as friend, 2012-01-31 19:58:34 +00:00
utils Convert assert(0) to llvm_unreachable 2012-02-05 07:21:30 +00:00
.gitignore git: Add tools/lldb to the ignore list. 2011-11-10 22:55:50 +00:00
CMakeLists.txt cmake: update outdated CPack version info 2012-02-04 02:52:48 +00:00
configure autoconf: put generated clang files in build dir 2012-02-04 03:00:50 +00:00
CREDITS.TXT CREDITS.TXT: Add a line. (test commit) 2011-10-29 23:42:14 +00:00
LICENSE.TXT Happy new year 2012! 2012-01-01 08:16:56 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Makefile: add missing files to FilesToConfig 2012-01-17 02:56:49 +00:00
Makefile.common
Makefile.config.in capitalize project name, reference bugzilla 2011-12-18 18:50:16 +00:00
Makefile.rules build/make: Ensure make clean removes the LLVMBuild makefile fragment. 2012-02-02 23:27:34 +00:00
README.txt Revert test commit 2012-01-31 23:18:33 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.