llvm-6502/lib/Support
2011-04-20 15:44:33 +00:00
..
Unix sys/Host: Change getHostTriple() to return the full Darwin version on OS X. 2011-04-20 15:44:33 +00:00
Windows Windows/PathV2.inc: [PR8520] Recognize "NUL" as special (character) file. 2011-03-16 02:53:32 +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 Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
APInt.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
APSInt.cpp
Atomic.cpp
circular_raw_ostream.cpp
CMakeLists.txt
CommandLine.cpp Fix a few instances of "warning: extra ';' outside of a function [-pedantic]". 2011-04-06 12:29:56 +00:00
ConstantRange.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp Properly initialize all fields in CrashReporterCleanupContext. This caused the buildbot failure earlier. 2011-03-22 04:33:13 +00:00
DAGDeltaAlgorithm.cpp
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp Introduce support to encode Objective-C property information in debugging information generated for an interface. 2011-04-16 00:11:51 +00:00
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp
FileUtilities.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Host.cpp Add support for detection of Intel SandyBridge. 2011-04-05 20:25:36 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IsInf.cpp
IsNAN.cpp
Makefile
ManagedStatic.cpp
Memory.cpp
MemoryBuffer.cpp We don't need a null terminator for the output file. 2011-03-22 19:20:47 +00:00
MemoryObject.cpp
Mutex.cpp
Path.cpp Assorted bugfixes in object file handling: 2011-04-03 22:53:19 +00:00
PathV2.cpp
PluginLoader.cpp
PrettyStackTrace.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
Process.cpp
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp raw_ostream: [PR6745] Tweak formatting (double)%e for Windows hosts. 2011-03-18 09:30:10 +00:00
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp regexes are allowed to match empty things, e.g. {{.*}} in filecheck. 2011-04-09 06:29:24 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
SmallPtrSet.cpp Prevent infinite growth of SmallPtrSet instances. 2011-03-30 18:32:48 +00:00
SmallVector.cpp
SourceMgr.cpp
Statistic.cpp
StringExtras.cpp
StringMap.cpp Reset StringMap's NumTombstones on clears and rehashes. 2011-03-30 18:32:51 +00:00
StringPool.cpp
StringRef.cpp Implements StringRef::compare with bounds. It is behaves similarly to strncmp(). Unit tests also included. 2011-04-15 17:56:50 +00:00
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp PTX: Add intrinsics to list of built-in intrinsics, which allows them to be 2011-04-20 15:37:17 +00:00
Twine.cpp
Valgrind.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