6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-26 21:32:10 +00:00
Code Issues Projects Releases Wiki Activity
LLVM backend for 6502
97,993 Commits 39 Branches 0 Tags 277 MiB
C++ 48.7%
LLVM 38.5%
Assembly 10.2%
C 0.9%
Python 0.4%
Other 1.2%
e1af5f6ad1
Go to file
Jim Grosbach e1af5f6ad1 X86: Perform integer comparisons at i32 or larger. 
Utilizing the 8 and 16 bit comparison instructions, even when an input can
be folded into the comparison instruction itself, is typically not worth it.
There are too many partial register stalls as a result, leading to significant
slowdowns. By always performing comparisons on at least 32-bit
registers, performance of the calculation chain leading to the
comparison improves. Continue to use the smaller comparisons when
minimizing size, as that allows better folding of loads into the
comparison instructions.

rdar://15386341

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195496 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-22 19:57:47 +00:00
autoconf Update to reflect the next release. 2013-11-20 10:10:50 +00:00
bindings [OCaml] Unbreak make install by providing ocamldoc target 2013-11-21 10:10:16 +00:00
cmake Revert my CMake patches concerning building with /MT (r194589, r194596) 2013-11-13 20:29:10 +00:00
docs Remove dangling documentation. llvm-prof was deleted a while ago. 2013-11-21 19:32:37 +00:00
examples [weak vtables] Place class definitions into anonymous namespaces to prevent weak vtables. 2013-11-19 03:08:35 +00:00
include Debug Info: add a constant for debug info version number. 2013-11-22 19:41:59 +00:00
lib X86: Perform integer comparisons at i32 or larger. 2013-11-22 19:57:47 +00:00
projects Revert "Revert "Windows: Add support for unicode command lines"" 2013-10-07 01:00:07 +00:00
test X86: Perform integer comparisons at i32 or larger. 2013-11-22 19:57:47 +00:00
tools VS integration: use the correct registry key after r195379 2013-11-22 18:25:43 +00:00
unittests [PM] Teach the analysis managers to pass themselves as arguments to the 2013-11-22 12:11:02 +00:00
utils FileCheck: fix a bug with multiple --check-prefix options. Similar to r194565 2013-11-20 13:25:05 +00:00
.arcconfig
.clang-format
.gitignore
CMakeLists.txt CMake: Some changes to package version names: 2013-11-21 22:47:21 +00:00
CODE_OWNERS.TXT Add loop rerolling code owner 2013-11-20 20:54:33 +00:00
configure Update to reflect the next release. 2013-11-20 10:10:50 +00:00
CREDITS.TXT Update CREDITS 2013-11-17 11:44:36 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile.common
Makefile.config.in
Makefile.rules Teach the Makefile build system how to handle SOURCES which include 2013-11-14 23:51:29 +00:00
README.txt Revert "Test commit to check e-mail address. Please discard this." 2013-10-04 10:59:13 +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.