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LLVM backend for 6502
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Benjamin Kramer 93702a3b07 BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability. 
Zero is used by BlockFrequencyInfo as a special "don't know" value. It also
causes a sink for frequencies as you can't ever get off a zero frequency with
more multiplies.

This recovers a 10% regression on MultiSource/Benchmarks/7zip. A zero frequency
was propagated into an inner loop causing excessive spilling.

PR16402.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184584 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-21 19:30:05 +00:00
autoconf Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
bindings We're in 3.4 land now. 2013-05-07 20:31:28 +00:00
cmake Revert "Cmake: add compiler option in a more idiomatic way" 2013-06-14 19:41:05 +00:00
docs Add a release note for removing the simplify-libcalls pass. 2013-06-21 03:08:23 +00:00
examples ExceptionDemo: Corresponding to r181820, SectionMemoryManager should belong to RTDyldMemoryManager. 2013-05-14 23:05:00 +00:00
include BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability. 2013-06-21 19:30:05 +00:00
lib BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability. 2013-06-21 19:30:05 +00:00
projects Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
runtime Remove "-Wl,-seg1addr -Wl,0xE0000000" from link options. 2013-06-04 15:26:37 +00:00
test BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability. 2013-06-21 19:30:05 +00:00
tools [yaml2obj][ELF] Allow expressing undefined symbols. 2013-06-21 01:11:48 +00:00
unittests BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability. 2013-06-21 19:30:05 +00:00
utils Add support for encoding the HLE XACQUIRE and XRELEASE prefixes. 2013-06-18 17:08:10 +00:00
.arcconfig
.gitignore
CMakeLists.txt Allow duplicates in LLVM_TARGETS_TO_BUILD and LLVM_EXPERIMENTAL_TARGETS_TO_BUILD. 2013-05-22 02:45:28 +00:00
CODE_OWNERS.TXT Add myself as SystemZ code owner 2013-05-08 14:41:29 +00:00
configure Don't define LTDL_SHLIBPATH_VAR. 2013-06-11 19:04:13 +00:00
CREDITS.TXT Identify me on IRC. 2013-06-18 22:09:36 +00:00
LICENSE.TXT Be more specific and capitalize filenames. 2013-05-21 21:22:34 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile Improved svn repo searching for 'make update' 2013-01-28 03:19:57 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Add basic zlib support to LLVM. This would allow to use compression/uncompression in selected LLVM tools. 2013-04-23 08:28:39 +00:00
Makefile.rules Remove redundant rpath. 2013-05-23 02:53:22 +00:00
README.txt test 2013-04-17 05:34:03 +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.