LLVM backend for 6502
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Evan Cheng fc47253294 (sub X, imm) gets canonicalized to (add X, -imm)
There are patterns to handle immediates when they fit in the immediate field.
e.g. %sub = add i32 %x, -123
=>   sub r0, r0, #123
Add patterns to catch immediates that do not fit but should be materialized
with a single movw instruction rather than movw + movt pair.
e.g. %sub = add i32 %x, -65535
=>   movw r1, #65535
     sub r0, r0, r1

rdar://11726136


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159057 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-23 00:29:06 +00:00
autoconf Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
bindings [python] Add negative MemoryBuffer testcase 2012-03-22 11:23:52 +00:00
cmake Avoid using the recently added APPEND_STRING feature. This should 2012-06-21 18:44:24 +00:00
docs [docs] Sphinxify GettingStartedVS. Patch by Mikael Lyngvig! 2012-06-21 23:27:09 +00:00
examples Remove trailing whitespaces 2012-06-21 22:26:01 +00:00
include TableGen: AsmMatcher support for better operand diagnostics. 2012-06-22 23:56:44 +00:00
lib (sub X, imm) gets canonicalized to (add X, -imm) 2012-06-23 00:29:06 +00:00
projects Add mipsel-* to the list of targets recognized by configure script. 2012-06-18 19:06:25 +00:00
runtime Free the allocated filename. Found by clang static analyzer. 2012-06-15 09:11:47 +00:00
test (sub X, imm) gets canonicalized to (add X, -imm) 2012-06-23 00:29:06 +00:00
tools Rename fp-op fusion option (yet again) for compatibility with GCC option. 2012-06-22 22:31:00 +00:00
unittests llvm/unittests: Simplify LINK_COMPONENTS. 2012-06-21 22:17:51 +00:00
utils TableGen: AsmMatcher support for better operand diagnostics. 2012-06-22 23:56:44 +00:00
.gitignore Add tools/lld to .gitignore. 2012-05-02 21:25:32 +00:00
CMakeLists.txt New test tool: obj2yaml 2012-06-19 18:02:35 +00:00
configure Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
CREDITS.TXT Alphabetize. 2012-06-19 23:47:58 +00:00
LICENSE.TXT Add YAML parser to Support. 2012-04-03 23:09:22 +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 Do not install llvm-config-host for cross-builds of clang. rdar://11317847 2012-05-09 00:07:02 +00:00
Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
Makefile.config.in - Added ExecutionEngine/MCJIT tests 2012-05-17 21:07:47 +00:00
Makefile.rules llvm-ld does not exist anymore, use llvm-link instead. 2012-05-23 20:34:19 +00:00
README.txt Testing commit access 2012-05-24 14:20:13 +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
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If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.