llvm-6502/lib/Support
2014-04-09 04:20:00 +00:00
..
Unix Support: normalize the default triple on Unix 2014-03-30 03:22:37 +00:00
Windows Windows: canonicalise the default windows triple 2014-03-29 01:08:53 +00:00
Allocator.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
APFloat.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
APInt.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
APSInt.cpp
ARMBuildAttrs.cpp ARM: update build attributes for ABI r2.09 2014-01-19 08:25:35 +00:00
Atomic.cpp
BlockFrequency.cpp [block-freq] Add a right shift to BlockFrequency that saturates at 1. 2013-12-14 02:24:22 +00:00
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt [Modules] Move the ConstantRange class into the IR library. This is 2014-03-04 12:24:34 +00:00
CommandLine.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Compression.cpp Simplify compression API by compressing into a SmallVector rather than a MemoryBuffer 2014-04-05 21:53:04 +00:00
ConvertUTF.c
ConvertUTFWrapper.cpp [Support] Add a Unicode conversion wrapper from UTF16 to UTF8 2013-07-16 17:14:33 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
DAGDeltaAlgorithm.cpp [C++11] Remove 'virtual' keyword from methods marked with 'override' keyword. 2014-03-10 03:53:12 +00:00
DataExtractor.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
DataStream.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp Remove some std stream usage from Support and TableGen 2013-08-06 22:51:21 +00:00
Dwarf.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
DynamicLibrary.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Errno.cpp Fix some rather confusing indentation and control flow in the errno 2013-09-02 05:55:10 +00:00
ErrorHandling.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
FileOutputBuffer.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
FileUtilities.cpp Replace OwningPtr<T> with std::unique_ptr<T>. 2014-03-06 05:51:42 +00:00
FoldingSet.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
FormattedStream.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
GraphWriter.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Hashing.cpp
Host.cpp Add support for krait cpu in llvm::sys::getHostCPUName() 2013-12-20 09:24:13 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LEB128.cpp Don't inline get[S|U]LEB128Size() until they are proved to be hot. 2014-02-22 15:39:39 +00:00
LineIterator.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
LLVMBuild.txt
Locale.cpp Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
LockFileManager.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Makefile
ManagedStatic.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
MD5.cpp Add support for adding the contents of a StringRef to the MD5 hash. 2013-05-31 22:34:56 +00:00
Memory.cpp
MemoryBuffer.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
MemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
Mutex.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Path.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Process.cpp Disable Visual C++ warning 4722 about aborting a destructor, 2014-03-25 08:42:49 +00:00
Program.cpp Add non-blocking Wait() for launched processes 2013-10-01 14:28:18 +00:00
raw_os_ostream.cpp
raw_ostream.cpp Revert "Use StringRef in raw_fd_ostream constructor" 2014-02-27 02:09:10 +00:00
README.txt.system
regcclass.h
regcname.h
regcomp.c Fix known typos 2014-01-24 17:20:08 +00:00
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
SearchForAddressOfSpecialSymbol.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Signals.cpp
SmallPtrSet.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
SmallVector.cpp
SourceMgr.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Statistic.cpp Revert "[C++11] Replace LLVM atomics with std::atomic." 2014-03-03 18:02:34 +00:00
StreamableMemoryObject.cpp [C++11] Remove 'virtual' keyword from methods marked with 'override' keyword. 2014-03-10 03:53:12 +00:00
StringExtras.cpp
StringMap.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
StringPool.cpp
StringRef.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
StringRefMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
system_error.cpp [C++11] Remove 'virtual' keyword from methods marked with 'override' keyword. 2014-03-10 03:53:12 +00:00
SystemUtils.cpp Move PrependMainExecutablePath next to its only user. 2013-06-14 15:12:13 +00:00
TargetRegistry.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Threading.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
ThreadLocal.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Timer.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
TimeValue.cpp
ToolOutputFile.cpp Use the simpler version of sys::fs::remove when possible. 2014-01-10 21:40:29 +00:00
Triple.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Twine.cpp Remove unnecessary llvm:: qualification. 2014-02-26 23:27:16 +00:00
Unicode.cpp Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
Valgrind.cpp Don't mark the declarations of the TSan annotation functions as weak. 2014-03-30 11:20:25 +00:00
Watchdog.cpp
YAMLParser.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
YAMLTraits.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00

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