LLVM backend for 6502
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Jakob Stoklund Olesen 87f7864c6d Merge into undefined lanes under -new-coalescer.
Add LIS::pruneValue() and extendToIndices(). These two functions are
used by the register coalescer when merging two live ranges requires
more than a trivial value mapping as supported by LiveInterval::join().

The pruneValue() function can remove the part of a value number that is
going to conflict in join(). Afterwards, extendToIndices can restore the
live range, using any new dominating value numbers and updating the SSA
form.

Use this complex value mapping to support merging a register into a
vector lane that has a conflicting value, but the clobbered lane is
undef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164074 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-17 23:03:25 +00:00
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cmake CMake toolchain file for Android NDK. 2012-09-11 11:54:27 +00:00
docs Patch by Sean Silva! 2012-09-13 23:51:08 +00:00
examples Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h 2012-06-29 12:38:19 +00:00
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projects Enable recursing into the compiler-rt projcet with the CMake build. 2012-08-29 00:38:02 +00:00
runtime libprofile: [CMake] Let libprofile_rt be not loadable_module but shared library. Autoconf's one does so. 2012-08-29 00:37:51 +00:00
test Merge into undefined lanes under -new-coalescer. 2012-09-17 23:03:25 +00:00
tools Fix includes of llvm files that used angle brackets. 2012-09-15 18:45:38 +00:00
unittests Fix includes of llvm files that used angle brackets. 2012-09-15 18:45:38 +00:00
utils Revert r164061-r164067. Most of the new subtarget emitter. 2012-09-17 23:00:42 +00:00
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Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
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README.txt test commit 2012-07-11 17:34:12 +00:00

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.