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LLVM backend for 6502
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Rafael Espindola 6cc1119408 Don't create multiple mergeable sections with -fdata-sections. 
ELF has support for sections that can be split into fixed size or
null terminated entities.

Since these sections can be split by the linker, it is not necessary
to split them in codegen.

This reduces the combined .o size in a llvm+clang build from
202,394,570 to 173,819,098 bytes.

The time for linking clang with gold (on a VM, on a laptop) goes
from 2.250089985 to 1.383001792 seconds.

The flip side is the size of rodata in clang goes from 10,926,785
to 10,929,345 bytes.

The increase seems to be because of http://sourceware.org/bugzilla/show_bug.cgi?id=17902.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227431 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-29 12:43:28 +00:00
autoconf Teach the autoconf machinery about the PS4 triple. 2015-01-26 15:25:05 +00:00
bindings IR: Return unique_ptr from MDNode::getTemporary() 2015-01-19 21:30:18 +00:00
cmake Add cmake flag LLVM_USE_SANITIZE_COVERAGE 2015-01-27 17:59:28 +00:00
docs Remove gc.root's performCustomLowering 2015-01-28 19:28:03 +00:00
examples Reorder. 2015-01-19 00:35:33 +00:00
include [LPM] Try again to appease powerpc64 in its self host. I've been unable 2015-01-29 02:34:17 +00:00
lib Don't create multiple mergeable sections with -fdata-sections. 2015-01-29 12:43:28 +00:00
projects
test Don't create multiple mergeable sections with -fdata-sections. 2015-01-29 12:43:28 +00:00
tools Add a Windows EH preparation pass that zaps resumes 2015-01-29 00:41:44 +00:00
unittests Refactoring llvm command line parsing and option registration. 2015-01-28 19:00:25 +00:00
utils [X86] Teach disassembler to handle illegal immediates on AVX512 integer compare instructions. 2015-01-28 10:09:56 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore .gitignore: add some rules for tagging programs 2015-01-10 19:11:29 +00:00
CMakeLists.txt Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CODE_OWNERS.TXT Assume code ownership for the PS4 to ensure patches get reviewed, per the Developer Policy. 2015-01-28 18:33:39 +00:00
configure Trunk is now 3.7.0svn 2015-01-14 17:38:03 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Check commit access 2015-01-16 19:23:34 +00:00

README.txt 

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

This directory and its subdirectories contain source code for LLVM,
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.