6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-20 09:30:43 +00:00
Code Issues Projects Releases Wiki Activity
LLVM backend for 6502
46,851 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%
8b944d39b3
Go to file
Evan Cheng 8b944d39b3 Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. 
e.g.
orl     $65536, 8(%rax)
=>
orb     $1, 10(%rax)

Since narrowing is not always a win, e.g. i32 -> i16 is a loss on x86, dag combiner consults with the target before performing the optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72507 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-28 00:35:15 +00:00
autoconf Split the ENABLE_THREADS #define in two. Now ENABLE_THREADS indicates the ability to run multiple threads at once in the JIT, and requires only 2009-05-19 22:18:56 +00:00
bindings Hopefully fix the build for people with ocaml. 2009-05-22 09:22:17 +00:00
cmake CMake: Set LIBS on llvm-config so we can query the system libraries 2009-05-27 15:49:33 +00:00
docs Remove border around table used for layout. 2009-05-24 02:46:06 +00:00
examples
include Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. 2009-05-28 00:35:15 +00:00
lib Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. 2009-05-28 00:35:15 +00:00
projects
runtime
test Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. 2009-05-28 00:35:15 +00:00
tools CMake: Set LIBS on llvm-config so we can query the system libraries 2009-05-27 15:49:33 +00:00
unittests
utils Propagate CPU string out of SubtargetFeatures 2009-05-23 19:50:50 +00:00
website
win32 Add a new codegen pass that normalizes dwarf exception handling 2009-05-22 20:36:31 +00:00
Xcode
build-for-llvm-top.sh
CMakeLists.txt
configure Split the ENABLE_THREADS #define in two. Now ENABLE_THREADS indicates the ability to run multiple threads at once in the JIT, and requires only 2009-05-19 22:18:56 +00:00
CREDITS.TXT Use latin symbols. I was told not everybody has a UTF-8 capable editor. 2009-05-23 20:40:47 +00:00
LICENSE.TXT
llvm.spec.in
Makefile
Makefile.common
Makefile.config.in
Makefile.rules For the new ar --plugin libLLVMgold.so to work we need libLTO linked with 2009-05-26 19:11:47 +00:00
ModuleInfo.txt
README.txt

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.