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LLVM backend for 6502
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Alexey Volkov 0d0bab5168 [X86] Tune LEA usage for Silvermont 
According to Intel Software Optimization Manual on Silvermont in some cases LEA
is better to be replaced with ADD instructions:
"The rule of thumb for ADDs and LEAs is that it is justified to use LEA
with a valid index and/or displacement for non-destructive destination purposes
(especially useful for stack offset cases), or to use a SCALE.
Otherwise, ADD(s) are preferable."

Differential Revision: http://reviews.llvm.org/D3826


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209198 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-20 08:55:50 +00:00
autoconf ARM64: initial backend import 2014-03-29 10:18:08 +00:00
bindings [OCaml] Add an ocamlfind package llvm.all_backends. 2014-05-01 21:00:52 +00:00
cmake cmake: Remove -D NDEBUG from CFLAGS as well as CXXFLAGS 2014-05-19 21:13:41 +00:00
docs Add 'nonnull', a new parameter and return attribute which indicates that the pointer is not null. Instcombine will elide comparisons between these and null. Patch by Luqman Aden! 2014-05-20 01:23:40 +00:00
examples Try to fix the msvc build. 2014-04-29 23:37:02 +00:00
include Add 'nonnull', a new parameter and return attribute which indicates that the pointer is not null. Instcombine will elide comparisons between these and null. Patch by Luqman Aden! 2014-05-20 01:23:40 +00:00
lib [X86] Tune LEA usage for Silvermont 2014-05-20 08:55:50 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test Teach isKnownNonNull that a nonnull return is not null. Add a test for this case as well as the case of a nonnull attribute (already handled but not tested). 2014-05-20 05:13:21 +00:00
tools llvm-readobj: use range-based for loop 2014-05-20 05:18:06 +00:00
unittests Use std::unique_ptr instead of OwningPtr in the MemoryBuffer unittests. 2014-05-18 21:01:46 +00:00
utils Fix typos. 2014-05-19 21:18:47 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.gitignore Remove projects/sample. 2014-03-12 22:40:22 +00:00
CMakeLists.txt [CMake] Add build rules for llvm-PerfectShuffle utility 2014-05-07 16:54:00 +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 autoconf: Fix libLLVM-Major-Minor-Patch.so symlink 2014-05-15 19:50:25 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +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 documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

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