llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-18 10:31:57 +00:00

History

Argyrios Kyrtzidis 3b05d9f4db In llvm::MemoryBuffer::getFile() remove an unnecessary stat call check. The sys::fs::is_directory() check is unnecessary because, if the filename is a directory, the function will fail anyway with the same error code returned. Remove the check to avoid an unnecessary stat call. Someone needs to review on windows and see if the check is necessary there or not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176386 91177308-0d34-0410-b5e6-96231b3b80d8		2013-03-01 22:48:51 +00:00
..
Unix	[PathV2] In llvm::sys::fs::unique_file, make sure it doesn't fall into an infinite loop by constantly trying	2013-02-28 00:38:19 +00:00
Windows	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +00:00
Allocator.cpp	as the allocator is reset zero out the number of bytes allocated, this was just	2013-02-20 23:30:56 +00:00
APFloat.cpp	APFloat: Make sure that we get a well-formed x87 NaN when converting from a smaller type.	2013-01-25 17:01:00 +00:00
APInt.cpp	Move part of APInt implementation from header to cpp file. These methods	2013-02-20 00:17:42 +00:00
APSInt.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt	Move UTF conversion routines from clang/lib/Basic to llvm/lib/Support	2013-01-30 12:05:05 +00:00
CommandLine.cpp
ConstantRange.cpp	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
ConvertUTF.c	Move UTF conversion routines from clang/lib/Basic to llvm/lib/Support	2013-01-30 12:05:05 +00:00
ConvertUTFWrapper.cpp	Move UTF conversion routines from clang/lib/Basic to llvm/lib/Support	2013-01-30 12:05:05 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp
Debug.cpp	Fix accidental concatenation for "outputuntil" in the -debug-buffer-size option description.	2013-02-20 22:33:46 +00:00
DeltaAlgorithm.cpp	Revert r171829 "Split changeset_ty using iterators instead of loops" as it breaks the VS2008 build	2013-01-14 14:13:06 +00:00
Disassembler.cpp
Dwarf.cpp	Previously, parsing capability of the .debug_frame section was added	2013-02-21 22:53:19 +00:00
DynamicLibrary.cpp	Remove redundant 'llvm::' qualifications	2013-01-13 16:01:15 +00:00
Errno.cpp
ErrorHandling.cpp
FileOutputBuffer.cpp
FileUtilities.cpp	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +00:00
FoldingSet.cpp	Fix whitespace. No functionality change.	2012-12-25 06:13:25 +00:00
FormattedStream.cpp
GraphWriter.cpp	ScheduleDAG: colorize the DOT graph and improve formatting.	2013-01-25 07:45:25 +00:00
Hashing.cpp
Host.cpp	Add support for autodetection of ADM bdver2.	2013-02-26 22:41:01 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LLVMBuild.txt
Locale.cpp
LocaleGeneric.inc
LocaleWindows.inc
LocaleXlocale.inc
LockFileManager.cpp	Provide a "None" value for convenience when using Optional<T>()	2013-02-21 00:27:28 +00:00
Makefile
ManagedStatic.cpp
Memory.cpp
MemoryBuffer.cpp	In llvm::MemoryBuffer::getFile() remove an unnecessary stat call check.	2013-03-01 22:48:51 +00:00
MemoryObject.cpp
Mutex.cpp
Path.cpp
PathV2.cpp	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp	Add time getters to the process interface for requesting the elapsed	2013-01-04 23:19:55 +00:00
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp	Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.	2013-02-12 21:21:59 +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
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp	Make helpers static. Add missing include so LLVMInitializeObjCARCOpts gets C linkage.	2013-02-15 12:30:38 +00:00
Statistic.cpp
StreamableMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp	Fix initialization-order bug in llvm::Support::TimeValue. TimeValue::now() is explicitly called during module initialization of lib/Support/Process.cpp. It reads the field of global object PosixZeroTime, which is not guaranteed to be initialized at this point. Found by AddressSanitizer with -fsanitize=init-order option.	2013-02-19 11:35:39 +00:00
ToolOutputFile.cpp
Triple.cpp	Add AArch64 as an experimental target.	2013-01-31 12:12:40 +00:00
Twine.cpp
Valgrind.cpp
YAMLParser.cpp
YAMLTraits.cpp	Fix memory leak in YAML I/O.	2013-01-08 21:04:44 +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