6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-28 19:31:58 +00:00
Code Issues Projects Releases Wiki Activity
LLVM backend for 6502
88,818 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%
681add7a63
Go to file
Chandler Carruth 681add7a63 Switch the constant expression speculation cost evaluation away from 
a cost fuction that seems both a bit ad-hoc and also poorly suited to
evaluating constant expressions.

Notably, it is missing any support for trivial expressions such as
'inttoptr'. I could fix this routine, but it isn't clear to me all of
the constraints its other users are operating under.

The core protection that seems relevant here is avoiding the formation
of a select instruction wich a further chain of select operations in
a constant expression operand. Just explicitly encode that constraint.

Also, update the comments and organization here to make it clear where
this needs to go -- this should be driven off of real cost measurements
which take into account the number of constants expressions and the
depth of the constant expression tree.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173340 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-24 11:53:01 +00:00
autoconf Disable Uninitialized Use Warnings for Broken gcc Versions 2013-01-15 18:21:15 +00:00
bindings [python] Add markup option to disassembler 2012-12-01 21:57:30 +00:00
cmake Add time getters to the process interface for requesting the elapsed 2013-01-04 23:19:55 +00:00
docs Fix small typo 2013-01-23 22:05:19 +00:00
examples Update links to "Itanium C++ ABI: Exception Handling" document 2013-01-13 15:53:09 +00:00
include Add asserts to SmallVector so that calls to front() and back() only succeed 2013-01-24 04:29:24 +00:00
lib Switch the constant expression speculation cost evaluation away from 2013-01-24 11:53:01 +00:00
projects Clean up the sample include orderings, not that it really matters... 2012-12-04 10:46:21 +00:00
runtime libprofile/CommonProfiling.c: Fix according to C89. 2012-11-02 01:32:02 +00:00
test Switch the constant expression speculation cost evaluation away from 2013-01-24 11:53:01 +00:00
tools llvm-symbolizer: factor out bits of the tool into separate LLVMSymbolize.{h,cpp} files. No functionality change. 2013-01-22 14:21:19 +00:00
unittests llvm/unittests: Use OwningPtr to fix --vg-leak. 2013-01-23 08:33:13 +00:00
utils Add the IR attribute 'sspstrong'. 2013-01-23 06:41:41 +00:00
.arcconfig Add .arcconfig to the repository. Useful if someone wants to use phabricator's command line tool. 2012-12-01 12:07:58 +00:00
.gitignore Add extra vim swap file pattern 2012-10-09 23:48:34 +00:00
CMakeLists.txt Fix spelling 2012-12-13 15:25:07 +00:00
CODE_OWNERS.TXT Update CODE_OWNERS.TXT. 2013-01-15 09:37:45 +00:00
configure Disable Uninitialized Use Warnings for Broken gcc Versions 2013-01-15 18:21:15 +00:00
CREDITS.TXT Update my email address. 2012-11-29 21:17:26 +00:00
LICENSE.TXT Add LICENSE.TXT covering contributions made by ARM. 2013-01-07 10:04:49 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Update the root Makefile for VMCore -> IR. Missed by my original search 2013-01-02 09:27:25 +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 Introduce llvm::sys::getProcessTriple() function. 2013-01-16 17:27:22 +00:00
Makefile.rules Pass NO_MISSING_FIELD_INITIALIZERS to Compiler Flags 2013-01-18 23:22:52 +00:00
README.txt Update README.txt to more accurately reflect reality. 2013-01-08 02:35:15 +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.