llvm-6502/lib/Support
2014-01-20 12:02:25 +00:00
..
Unix Make sys::ThreadLocal<> zero-initialized on non-thread builds (PR18205) 2013-12-19 20:32:44 +00:00
Windows Try to fix the windows build. The comments in other files don't seem to 2014-01-07 12:37:13 +00:00
Allocator.cpp [BumpPtrAllocator] Move DefaultSlabAllocator to a member of BumpPtrAllocator, instead of a static variable. 2013-08-28 01:02:21 +00:00
APFloat.cpp Correct word hyphenations 2013-12-05 05:44:44 +00:00
APInt.cpp Remove APInt::extractBit since it is already implemented via operator[]. Change tests for extractBit to test operator[]. 2013-12-13 22:00:19 +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 [CMake] llvm_process_sources: Introduce a parameter, ADDITIONAL_HEADERS. 2014-01-20 10:20:23 +00:00
CommandLine.cpp Support: Fix handling of args that begin with @ but aren't files 2013-12-06 22:56:19 +00:00
Compression.cpp Expose CRC-32 implementation from zlib 2013-08-14 16:03:29 +00:00
ConstantRange.cpp [ConstantRange] improve my previous patch per Nick suggestion 2013-10-31 19:53:53 +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 This switches CrashRecoveryContext to using ManagedStatic for its global Mutex and 2013-09-12 17:46:57 +00:00
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp Add a wrapper for open. 2013-07-16 19:44:17 +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 Dwarf: Fix a copy-paste bug. 2013-12-22 10:23:23 +00:00
DynamicLibrary.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +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 Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
FileOutputBuffer.cpp Use the simpler version of sys::fs::remove when possible. 2014-01-10 21:40:29 +00:00
FileUtilities.cpp MemoryBuffer::getFile handles zero sized files, no need to duplicate the test. 2013-07-10 17:30:39 +00:00
FoldingSet.cpp
FormattedStream.cpp Add line tracking support to FormattedStream 2013-05-08 20:29:10 +00:00
GraphWriter.cpp Use the simpler version of sys::fs::remove when possible. 2014-01-10 21:40:29 +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
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LineIterator.cpp Use two variables here rather than reusing (and abusing) one. This is 2013-12-27 04:44:35 +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 Use the simpler version of sys::fs::remove when possible. 2014-01-10 21:40:29 +00:00
Makefile
ManagedStatic.cpp
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 MemoryBuffer: Increase the alignment of small file buffers to 16 2013-12-16 18:18:12 +00:00
MemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
Mutex.cpp
Path.cpp Remove remove_all. A compiler has no need for recursively deleting a directory. 2014-01-10 20:36:42 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +00:00
Process.cpp Support ANSI escape code on Windows 2013-09-11 00:36:48 +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 raw_fd_ostream: Don't change STDERR to O_BINARY, or w*printf() (in assert()) would barf wide chars after llvm::errs(). 2014-01-12 16:14:24 +00:00
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp Make llvm::Regex non-copyable but movable. 2014-01-02 19:04:59 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp Lift self-copy protection up to the header file and add self-move 2013-11-26 00:54:44 +00:00
SmallVector.cpp
SourceMgr.cpp SourceMgr diagnotics printing: fix a bug where printing a fixit for a source 2013-09-27 21:24:36 +00:00
Statistic.cpp
StreamableMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp Add {start,end}with_lower methods to StringRef. 2013-10-30 18:32:26 +00:00
StringRefMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
system_error.cpp
SystemUtils.cpp Move PrependMainExecutablePath next to its only user. 2013-06-14 15:12:13 +00:00
TargetRegistry.cpp Fix pr18235. 2013-12-13 16:05:32 +00:00
Threading.cpp
ThreadLocal.cpp Silence g++ 4.9 build issue 2013-12-31 03:16:55 +00:00
Timer.cpp Add a wrapper for open. 2013-07-16 19:44:17 +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 [x86] Support i386-*-*-code16 triple for emitting 16-bit code 2014-01-20 12:02:25 +00:00
Twine.cpp
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
Watchdog.cpp
YAMLParser.cpp [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
YAMLTraits.cpp Re-sort all of the includes with ./utils/sort_includes.py so that 2014-01-07 11:48:04 +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