llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-16 11:30:51 +00:00

History

NAKAMURA Takumi 93f761eced [CMake] LLVMSupport: Give system_libs PRIVATE scope when LLVMSupport is built as SHARED. Users of LLVMSupport won't inherit ${system_libs}. unittests/SupporTests is another user of libpthreads. Apply LLVM_SYSTEM_LIBS for him explicitly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221531 91177308-0d34-0410-b5e6-96231b3b80d8		2014-11-07 16:08:19 +00:00
..
Unix	Revert 220932.	2014-11-05 04:44:31 +00:00
Windows	Revert 220932.	2014-11-05 04:44:31 +00:00
Allocator.cpp
APFloat.cpp	Revert "r216914 - Revert: [APFloat] Fixed a bug in method 'fusedMultiplyAdd'"	2014-10-14 19:23:07 +00:00
APInt.cpp	InstCombine: Don't miscompile (x lshr C1) udiv C2	2014-10-13 21:48:30 +00:00
APSInt.cpp
ARMBuildAttrs.cpp
ARMWinEH.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt	[CMake] LLVMSupport: Give system_libs PRIVATE scope when LLVMSupport is built as SHARED. Users of LLVMSupport won't inherit ${system_libs}.	2014-11-07 16:08:19 +00:00
CommandLine.cpp	Introduce LLVMParseCommandLineOptions C API function.	2014-10-16 22:47:52 +00:00
Compression.cpp
ConvertUTF.c
ConvertUTFWrapper.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp
Debug.cpp
DeltaAlgorithm.cpp
Dwarf.cpp	Modernize doxygen comments in Support/Dwarf.h	2014-10-23 04:08:38 +00:00
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp	Converting the ErrorHandlerMutex to a ManagedStatic to avoid the static constructor and destructor.	2014-10-03 22:03:12 +00:00
FileOutputBuffer.cpp
FileUtilities.cpp
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp	Use findProgramByName.	2014-11-04 01:29:59 +00:00
Hashing.cpp
Host.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LEB128.cpp
LineIterator.cpp	Add CRLF support to LineIterator.	2014-11-03 14:09:47 +00:00
LLVMBuild.txt
Locale.cpp
LockFileManager.cpp	Misc cleanups to the FileSytem api.	2014-09-11 20:30:02 +00:00
Makefile
ManagedStatic.cpp	Revert 220932.	2014-11-05 04:44:31 +00:00
MathExtras.cpp	Fix llvm::huge_valf multiple initializations with Visual C++.	2014-09-27 14:41:29 +00:00
MD5.cpp	Make the MD5 result name consistent between functions, header and source.	2014-10-06 13:48:07 +00:00
Memory.cpp
MemoryBuffer.cpp	[Support] Add MemoryBuffer::getFileSlice()	2014-10-08 00:22:18 +00:00
MemoryObject.cpp
Mutex.cpp
Options.cpp	Defining a new API for debug options that doesn't rely on static global cl::opts.	2014-10-15 21:54:35 +00:00
Path.cpp	llvm-readobj: Add support for dumping the DOS header in PE files	2014-11-05 06:24:35 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp
Program.cpp
RandomNumberGenerator.cpp
raw_os_ostream.cpp
raw_ostream.cpp	Support: Don't call close again if we get EINTR	2014-10-07 05:48:40 +00:00
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
ScaledNumber.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp	Remove unnecessary .c_str() when implicitly converting to Twine	2014-11-06 01:13:27 +00:00
SpecialCaseList.cpp
Statistic.cpp
StreamableMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp
StringRefMemoryObject.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp	Revert 220932.	2014-11-05 04:44:31 +00:00
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp	Add hsail and amdil64 to Triple	2014-09-19 19:52:11 +00:00
Twine.cpp
Unicode.cpp
Valgrind.cpp
Watchdog.cpp
YAMLParser.cpp
YAMLTraits.cpp	Fix memory leak in error paths in YAMLTraits by using unique_ptr	2014-09-15 18:39:24 +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