llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-01 00:33:09 +00:00

History

Hans Wennborg 837d6ed3ea Make sys::ThreadLocal<> zero-initialized on non-thread builds (PR18205) According to the docs, ThreadLocal<>::get() should return NULL if no object has been set. This patch makes that the case also for non-thread builds and adds a very basic unit test to check it. (This was causing PR18205 because PrettyStackTraceHead didn't get zero- initialized and we'd crash trying to read past the end of that list. We didn't notice this so much on Linux since we'd crash after printing all the entries, but on Mac we print into a SmallString, and would crash before printing that.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197718 91177308-0d34-0410-b5e6-96231b3b80d8		2013-12-19 20:32:44 +00:00
..
Unix	Make sys::ThreadLocal<> zero-initialized on non-thread builds (PR18205)	2013-12-19 20:32:44 +00:00
Windows	Correct word hyphenations	2013-12-05 05:44:44 +00:00
Allocator.cpp
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
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	Revert r197438 and r197447 until we figure out how to avoid circular dependency at link time	2013-12-17 01:19:59 +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
ConstantRange.cpp
ConvertUTF.c
ConvertUTFWrapper.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp	Pull in a couple of new constants from the upcoming DWARF 5 standard.	2013-12-18 21:48:14 +00:00
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp
FileOutputBuffer.cpp
FileUtilities.cpp
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Hashing.cpp
Host.cpp	Fix Typo.	2013-12-12 16:17:40 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LLVMBuild.txt
Locale.cpp
LockFileManager.cpp
Makefile
ManagedStatic.cpp
MD5.cpp
Memory.cpp
MemoryBuffer.cpp	MemoryBuffer: Increase the alignment of small file buffers to 16	2013-12-16 18:18:12 +00:00
MemoryObject.cpp
Mutex.cpp
Path.cpp
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp
README.txt.system
regcclass.h
regcname.h
regcomp.c
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp	Add missing escape characters to the new Regex::escape() function	2013-12-12 02:51:58 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp
Statistic.cpp
StreamableMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp
StringRefMemoryObject.cpp
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp	Fix pr18235.	2013-12-13 16:05:32 +00:00
Threading.cpp
ThreadLocal.cpp	Make sys::ThreadLocal<> zero-initialized on non-thread builds (PR18205)	2013-12-19 20:32:44 +00:00
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp	Recognize EABIHF as environment and use it for RTAPI + VFP.	2013-12-16 18:51:28 +00:00
Twine.cpp
Unicode.cpp
Valgrind.cpp
Watchdog.cpp
YAMLParser.cpp
YAMLTraits.cpp

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