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LLVM backend for 6502
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Benjamin Kramer e7cf062537 DAGCombine: fold "(zext x) == C" into "x == (trunc C)" if the trunc is lossless. 
On x86 this allows to fold a load into the cmp, greatly reducing register pressure.
  movzbl	(%rdi), %eax
  cmpl	$47, %eax
->
  cmpb	$47, (%rdi)

This shaves 8k off gcc.o on i386. I'll leave applying the patch in README.txt to Chris :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130005 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-22 18:47:44 +00:00
autoconf Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
bindings Fix compiling the ocaml kaleidoscope tutorials 2011-02-09 18:32:02 +00:00
cmake Disable warning C4181: "qualifier applied to reference type; ignored" 2011-04-19 00:03:17 +00:00
docs docs/llvm.css: Introduce cascading style <div> and <p> continued on <h[2-5]>. For now, it is applied in AliasAnalysis.html and ReleaseNotes.html. 2011-04-21 01:52:00 +00:00
examples Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
include Comment out some unused parameter names to silence out-of-tree -Wunused warnings. 2011-04-22 11:36:45 +00:00
lib DAGCombine: fold "(zext x) == C" into "x == (trunc C)" if the trunc is lossless. 2011-04-22 18:47:44 +00:00
projects Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
runtime Write out uint64_t as i{0..32},i{33..64} instead of i{0..32},0. 2011-04-16 10:25:32 +00:00
test DAGCombine: fold "(zext x) == C" into "x == (trunc C)" if the trunc is lossless. 2011-04-22 18:47:44 +00:00
tools Remove unused argument. 2011-04-21 23:39:26 +00:00
unittests PR9214: Convert Metadata API to use ArrayRef. 2011-04-21 19:59:31 +00:00
utils Define Neon load/store intrinsics for Clang as macros instead of functions. 2011-04-22 00:37:01 +00:00
website
.gitignore
build-for-llvm-top.sh
CMakeLists.txt Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
configure Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
Makefile build: Add support for a SHOW_DIAGNOSTICS build variable. 2011-04-11 22:37:39 +00:00
Makefile.common
Makefile.config.in
Makefile.rules Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
ModuleInfo.txt
README.txt Test commit. 2011-02-11 19:11:57 +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 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.