llvm-6502/lib/Support
Yaron Keren dc374b5eb4 Fix lib\support\Windows/TimeValue.inc(48): warning C4189:
'Error' : local variable is initialized but not referenced.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234982 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-15 07:45:52 +00:00
..
Unix Add boolean to PrintStackTraceOnErrorSignal to disable crash reporting. 2015-04-07 20:43:23 +00:00
Windows Fix lib\support\Windows/TimeValue.inc(48): warning C4189: 2015-04-15 07:45:52 +00:00
Allocator.cpp
APFloat.cpp
APInt.cpp Test commit. Improve comments in APInt. NFC. 2015-04-06 13:31:39 +00:00
APSInt.cpp
ARMBuildAttrs.cpp
ARMWinEH.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt
CommandLine.cpp Use 'override/final' instead of 'virtual' for overridden methods 2015-04-11 02:11:45 +00:00
Compression.cpp
ConvertUTF.c
ConvertUTFWrapper.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp Use 'override/final' instead of 'virtual' for overridden methods 2015-04-11 02:11:45 +00:00
Debug.cpp Misc cleanup. NFC. 2015-04-09 16:59:07 +00:00
DeltaAlgorithm.cpp
Dwarf.cpp
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp
FileOutputBuffer.cpp
FileUtilities.cpp
FoldingSet.cpp fix typos; NFC 2015-04-06 16:21:12 +00:00
FormattedStream.cpp
GraphWriter.cpp [GraphWriter] Attempt to open .dot files with xdg-open/open first 2015-04-03 17:22:36 +00:00
Hashing.cpp
Host.cpp [X86] Stop changing result of getHostCPUName based on whether the processor supports AVX. getHostCPUFeatures should be used instead to determine whether to support AVX. 2015-03-31 06:18:31 +00:00
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
LEB128.cpp
LineIterator.cpp
LLVMBuild.txt
Locale.cpp
LockFileManager.cpp
Makefile
ManagedStatic.cpp
MathExtras.cpp
MD5.cpp
Memory.cpp
MemoryBuffer.cpp
MemoryObject.cpp
Mutex.cpp
Options.cpp
Path.cpp
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp [Support] Remove statically initialized yet dead code. 2015-03-27 11:01:53 +00:00
Program.cpp
RandomNumberGenerator.cpp
raw_os_ostream.cpp
raw_ostream.cpp Use the ability to pwrite to simplify the ELF writer. 2015-04-14 22:54:16 +00:00
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp Remove more superfluous .str() and replace std::string concatenation with Twine. 2015-03-30 15:42:36 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
ScaledNumber.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp
SpecialCaseList.cpp
Statistic.cpp
StreamingMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp [ARM] Rename v8.1a from "extension" to "architecture": follow-up 2015-04-02 09:32:14 +00:00
Twine.cpp
Unicode.cpp
Valgrind.cpp
Watchdog.cpp
YAMLParser.cpp
YAMLTraits.cpp

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