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LLVM backend for 6502
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1a41f32546
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Jakob Stoklund Olesen 1a41f32546 Add a LiveRangeUpdater class. 
Adding new segments to large LiveIntervals can be expensive because the
LiveRange objects after the insertion point may need to be moved left or
right. This can cause quadratic behavior when adding a large number of
segments to a live range.

The LiveRangeUpdater class allows the LIveInterval to be in a temporary
invalid state while segments are being added. It maintains an internal
gap in the LiveInterval when it is shrinking, and it has a spill area
for new segments when the LiveInterval is growing.

The behavior is similar to the existing mergeIntervalRanges() function,
except it allocates less memory for the spill area, and the algorithm is
turned inside out so the loop is driven by the clients.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175644 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20 18:18:12 +00:00
autoconf configure: remove workaround for gcc's -Wno-maybe-uninitialized 2013-02-13 21:19:39 +00:00
bindings [python] Add markup option to disassembler 2012-12-01 21:57:30 +00:00
cmake Use correct host/target CMake variables to define lit variables. 2013-02-14 16:49:32 +00:00
docs Spelling corrections 2013-02-18 02:44:09 +00:00
examples Update links to "Itanium C++ ABI: Exception Handling" document 2013-01-13 15:53:09 +00:00
include Add a LiveRangeUpdater class. 2013-02-20 18:18:12 +00:00
lib Add a LiveRangeUpdater class. 2013-02-20 18:18:12 +00:00
projects Set the deployment target for Apple llvmCore builds. <rdar://problem/12712431> 2013-02-05 17:29:03 +00:00
runtime Use 'RC_XBS' instead of 'RC_BUILDIT' to catch all times when it's built in the Apple way. 2013-02-13 19:44:08 +00:00
test Fix PR15267 2013-02-20 18:04:21 +00:00
tools [llvm-readobj] Add ELF .dynamic table dumping. 2013-02-20 02:37:12 +00:00
unittests Move the SplatByte helper to APInt and generalize it a bit. 2013-02-20 13:00:06 +00:00
utils Fix for bug 15246 -- out-of-bound error in the TableGen backend, CodeGenMapTable.cpp. 2013-02-14 17:58:13 +00:00
.arcconfig Add .arcconfig to the repository. Useful if someone wants to use phabricator's command line tool. 2012-12-01 12:07:58 +00:00
.gitignore Add extra vim swap file pattern 2012-10-09 23:48:34 +00:00
CMakeLists.txt Revert CMake version bump since we don't actually need 2.8.6 any more. 2013-02-18 11:53:37 +00:00
CODE_OWNERS.TXT Add myself as code owner of AArch64 backend. 2013-01-31 12:51:16 +00:00
configure configure: remove workaround for gcc's -Wno-maybe-uninitialized 2013-02-13 21:19:39 +00:00
CREDITS.TXT Update my email address. 2012-11-29 21:17:26 +00:00
LICENSE.TXT Add LICENSE.TXT covering contributions made by ARM. 2013-01-07 10:04:49 +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 Improved svn repo searching for 'make update' 2013-01-28 03:19:57 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Pass CPPFLAGS/CFLAGS/CXXFLAGS from the environment of configure to 2013-02-04 08:15:53 +00:00
Makefile.rules Use 'RC_XBS' instead of 'RC_BUILDIT' to catch all times when it's built in the Apple way. 2013-02-13 19:44:08 +00:00
README.txt Update README.txt to more accurately reflect reality. 2013-01-08 02:35:15 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
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LLVM is open source software. You may freely distribute it under the terms of
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Please see the documentation provided in docs/ for further
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documentation setup.

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