llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-17 18:31:04 +00:00

History

Richard Smith bc36393108 Reduce alignment of SmallVector<T> to the required amount, rather than forcing 16-byte alignment. This fixes misaligned SmallVector accesses via ExtractValueInst's SmallVector data member. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162331 91177308-0d34-0410-b5e6-96231b3b80d8		2012-08-22 00:11:07 +00:00
..
Unix	Properly test the LLVM_USE_RVALUE_REFERENCES macro.	2012-08-15 19:16:27 +00:00
Windows	Properly test the LLVM_USE_RVALUE_REFERENCES macro.	2012-08-15 19:16:27 +00:00
Allocator.cpp
APFloat.cpp	Fix another roundToIntegral bug where very large values could become infinity. Problem and solution identified by Steve Canon.	2012-08-15 18:28:45 +00:00
APInt.cpp
APSInt.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt	Initial commit of new FileOutputBuffer support class.	2012-08-01 02:29:50 +00:00
CommandLine.cpp
ConstantRange.cpp	make ConstantRange::zeroExtend() optimal	2012-07-23 20:33:29 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp	DataExtractor: Fix integer truncation issues in LEB128 extraction.	2012-08-20 10:52:11 +00:00
DataStream.cpp
Debug.cpp	Typos.	2012-07-27 21:41:59 +00:00
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp
DynamicLibrary.cpp
Errno.cpp
ErrorHandling.cpp
FileOutputBuffer.cpp	Initial commit of new FileOutputBuffer support class.	2012-08-01 02:29:50 +00:00
FileUtilities.cpp
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Hashing.cpp
Host.cpp
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LLVMBuild.txt
Locale.cpp
LocaleGeneric.inc
LocaleWindows.inc
LocaleXlocale.inc
LockFileManager.cpp
Makefile
ManagedStatic.cpp
Memory.cpp
MemoryBuffer.cpp
MemoryObject.cpp
Mutex.cpp	Add support for the OpenBSD for Bitrig.	2012-08-06 20:52:18 +00:00
Path.cpp
PathV2.cpp
PluginLoader.cpp
PrettyStackTrace.cpp
Process.cpp
Program.cpp
raw_os_ostream.cpp
raw_ostream.cpp	raw_ostream: Add a has_colors() method.	2012-07-20 18:29:41 +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	Reduce alignment of SmallVector<T> to the required amount, rather than forcing 16-byte alignment. This fixes misaligned SmallVector accesses via ExtractValueInst's SmallVector data member.	2012-08-22 00:11:07 +00:00
SourceMgr.cpp	SourceMgr: Use has_colors() instead of just is_displayed() before trying to use	2012-07-20 18:29:44 +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
ToolOutputFile.cpp
Triple.cpp	Add support for the OpenBSD for Bitrig.	2012-08-06 20:52:18 +00:00
Twine.cpp
Valgrind.cpp
YAMLParser.cpp	Remove unused private member variables uncovered by the recent changes to clang's -Wunused-private-field.	2012-07-20 22:05:57 +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