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LLVM backend for 6502
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cd9f6b870e
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Filipe Cabecinhas cd9f6b870e Optimize some special cases for SSE4a insertqi 
Summary:
Since the upper 64 bits of the destination register are undefined when
performing this operation, we can substitute it and let the optimizer
figure out that only a copy is needed.

Also added range merging, if an instruction copies a range that can be
merged with a previous copied range.

Added test cases for both optimizations.

Reviewers: grosbach, nadav

CC: llvm-commits

Differential Revision: http://reviews.llvm.org/D3357

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207055 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-24 00:38:14 +00:00
autoconf ARM64: initial backend import 2014-03-29 10:18:08 +00:00
bindings [python] Fix python bindings tests 2014-04-23 20:32:03 +00:00
cmake Added Sphinx documentation generation to CMake build system. 2014-04-18 21:45:25 +00:00
docs [docs] Add a note to docs/README.txt 2014-04-22 21:47:53 +00:00
examples
include [LCG] Normalize the post-order SCC iterator to just iterate over the SCC 2014-04-23 23:51:07 +00:00
lib Optimize some special cases for SSE4a insertqi 2014-04-24 00:38:14 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test Optimize some special cases for SSE4a insertqi 2014-04-24 00:38:14 +00:00
tools llvm-cov: Add support for gcov's --long-file-names option 2014-04-23 21:44:55 +00:00
unittests [LCG] Normalize the post-order SCC iterator to just iterate over the SCC 2014-04-23 23:51:07 +00:00
utils llvm-build: Get rid of 'import *' 2014-04-23 19:17:42 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.gitignore Remove projects/sample. 2014-03-12 22:40:22 +00:00
CMakeLists.txt Added Sphinx documentation generation to CMake build system. 2014-04-18 21:45:25 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure ARM64: initial backend import 2014-03-29 10:18:08 +00:00
CREDITS.TXT Test commit. 2014-04-10 22:25:51 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Add a --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
Makefile.rules Use -std=gnu++11 on cygwin and mingw. 2014-03-12 20:01:15 +00:00
README.txt

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
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optimizers, and runtime environments.

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