llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-21 00:32:23 +00:00

History

Benjamin Kramer 8d4dd79526 Simplify & microoptimize code. No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135364 91177308-0d34-0410-b5e6-96231b3b80d8		2011-07-18 00:00:20 +00:00
..
Unix	By default mkstemp() creates a temporary file with mode 0600, but the mode	2011-07-05 18:55:31 +00:00
Windows	Windows/DynamicLibrary.inc: Fix trivial warnings. Thanks to John Myers!	2011-07-09 08:41:20 +00:00
Allocator.cpp	Add BumpPtrAllocator::getTotalMemory() to allow clients to query how much memory a BumpPtrAllocator allocated.	2011-04-18 22:44:46 +00:00
APFloat.cpp	Explicitly cast the second argument to unsigned in order to select the	2011-07-15 07:31:10 +00:00
APInt.cpp	add option for literal formatting to APInt::toString()	2011-06-15 00:51:55 +00:00
APSInt.cpp
Atomic.cpp
BranchProbability.cpp	Branch profiling: floating-point avoidance.	2011-06-11 01:05:22 +00:00
circular_raw_ostream.cpp
CMakeLists.txt	Branch profiling: floating-point avoidance.	2011-06-11 01:05:22 +00:00
CommandLine.cpp	Aliased flag options should be directed to stdout, not stderr to be consistent. Patch by Julien Lerouge.	2011-06-13 20:45:54 +00:00
ConstantRange.cpp	Fix the implementation of ConstantRange::sub(ConstantRange). Patch by Xi Wang!	2011-06-22 21:13:46 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp	Doug convinced me that DW_AT_APPLE_objc_complete_type is more appropriate name.	2011-05-12 21:29:42 +00:00
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp	Like the coding standards say, do not use "using namespace std".	2011-04-23 09:06:00 +00:00
FileUtilities.cpp
FoldingSet.cpp	Simplify & microoptimize code. No intended functionality change.	2011-07-18 00:00:20 +00:00
FormattedStream.cpp
GraphWriter.cpp
Host.cpp	Update comments for SandyBridge CPU identifiers.	2011-07-08 22:33:59 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IsInf.cpp
IsNAN.cpp
Makefile
ManagedStatic.cpp
Memory.cpp
MemoryBuffer.cpp	random comment cleanups.	2011-05-22 00:50:53 +00:00
MemoryObject.cpp
Mutex.cpp
Path.cpp	Add support for 64-bit object files to Path.	2011-04-22 03:50:19 +00:00
PathV2.cpp
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp
Program.cpp	Have Program::Wait return -2 for crashed and timeouts instead of embedding	2011-05-21 00:56:46 +00:00
raw_os_ostream.cpp
raw_ostream.cpp
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp	Add new -d option to tblgen. It writes a make(1)-style dependency file.	2011-06-01 13:10:15 +00:00
Statistic.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp	Remove bounded StringRef::compare() since nothing but Clang SA was using it and it is just as easy to use StringRef::substr() preceding StringRef::compare() to achieve the same thing.	2011-04-28 20:20:12 +00:00
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp	Recognize mipseb as alias for mips for symmetry with mipsel.	2011-07-07 16:53:52 +00:00
Twine.cpp	In Twine::str(), if the Twine stores only a std::string, just return a direct copy of that instead of first copying to a SmallString and converting that to a std::string. Also fix some indentation.	2011-07-15 11:05:37 +00:00
Valgrind.cpp	Revert previous commit. It seems that whether casting to void	2011-07-02 13:14:22 +00:00

README.txt.system

Design Of lib/System
====================

The software in this directory is designed to completely shield LLVM from any
and all operating system specific functionality. It is not intended to be a
complete operating system wrapper (such as ACE), but only to provide the
functionality necessary to support LLVM.

The software located here, of necessity, has very specific and stringent design
rules. Violation of these rules means that cracks in the shield could form and
the primary goal of the library is defeated. By consistently using this library,
LLVM becomes more easily ported to new platforms since the only thing requiring
porting is this library.

Complete documentation for the library can be found in the file:
  llvm/docs/SystemLibrary.html
or at this URL:
  http://llvm.org/docs/SystemLibrary.html

While we recommend that you read the more detailed documentation, for the
impatient, here's a high level summary of the library's requirements.

 1. No system header files are to be exposed through the interface.
 2. Std C++ and Std C header files are okay to be exposed through the interface.
 3. No exposed system-specific functions.
 4. No exposed system-specific data.
 5. Data in lib/System classes must use only simple C++ intrinsic types.
 6. Errors are handled by returning "true" and setting an optional std::string
 7. Library must not throw any exceptions, period.
 8. Interface functions must not have throw() specifications.
 9. No duplicate function impementations are permitted within an operating
    system class.

To accomplish these requirements, the library has numerous design criteria that
must be satisfied. Here's a high level summary of the library's design criteria:

 1. No unused functionality (only what LLVM needs)
 2. High-Level Interfaces
 3. Use Opaque Classes
 4. Common Implementations
 5. Multiple Implementations
 6. Minimize Memory Allocation
 7. No Virtual Methods