llvm-6502/lib/Support
Benjamin Kramer 69ccf9fc0b Move APInt::operator[] inline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152692 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14 00:38:15 +00:00
..
Unix Change default error_code ctor to a 'named ctor' so it's more self-documenting. 2012-02-09 19:24:12 +00:00
Windows Change default error_code ctor to a 'named ctor' so it's more self-documenting. 2012-02-09 19:24:12 +00:00
Allocator.cpp BumpPtrAllocator: Make sure threshold cannot be initialized with a value smaller than the slab size. 2012-03-01 22:10:16 +00:00
APFloat.cpp Replace the hashing functions on APInt and APFloat with overloads of the 2012-03-04 12:02:57 +00:00
APInt.cpp Move APInt::operator[] inline. 2012-03-14 00:38:15 +00:00
APSInt.cpp
Atomic.cpp drop unneeded config.h includes 2011-12-22 23:04:07 +00:00
BlockFrequency.cpp BlockFrequency: Use a smarter overflow check. 2011-10-27 16:38:50 +00:00
BranchProbability.cpp Print branch probabilities as percentages. 2011-10-23 11:32:54 +00:00
circular_raw_ostream.cpp
CMakeLists.txt Rewrite LLVM's generalized support library for hashing to follow the API 2012-03-01 18:55:25 +00:00
CommandLine.cpp Don't cast away constant qualifier. 2012-03-12 10:51:06 +00:00
ConstantRange.cpp Convert assert(0) to llvm_unreachable 2012-02-07 05:05:23 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp Remove dead code. Improve llvm_unreachable text. Simplify some control flow. 2012-02-19 11:37:01 +00:00
DAGDeltaAlgorithm.cpp Adding missing anchor to DATDeltaAlgorithm. 2011-12-07 06:44:23 +00:00
DataExtractor.cpp Remove extra semi-colons. 2012-02-22 17:25:00 +00:00
DataStream.cpp Change default error_code ctor to a 'named ctor' so it's more self-documenting. 2012-02-09 19:24:12 +00:00
Debug.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
DeltaAlgorithm.cpp
Disassembler.cpp Clean up a few references to System/. We still have docs/SystemLibrary.html 2011-10-11 20:02:52 +00:00
Dwarf.cpp Add new tag and an attribute to support debug info for objective-c property. 2012-02-03 23:57:08 +00:00
DynamicLibrary.cpp Make DynamicLibrary thread-safe w/r/t call to dlerror() after dlopen(). PR10718 2011-08-22 19:01:52 +00:00
Errno.cpp lib/Support/Errno.cpp: Check strerror_s() with HAVE_DECL_STRERROR_S in config.h.*. 2011-02-09 04:18:48 +00:00
ErrorHandling.cpp Like the coding standards say, do not use "using namespace std". 2011-04-23 09:06:00 +00:00
FileUtilities.cpp Change default error_code ctor to a 'named ctor' so it's more self-documenting. 2012-02-09 19:24:12 +00:00
FoldingSet.cpp Revert commit 152300 (ddunbar) since it still seems to be breaking 2012-03-08 09:32:21 +00:00
FormattedStream.cpp Add missing standard headers. Patch by Joerg Sonnenberger! 2010-12-19 20:43:38 +00:00
GraphWriter.cpp Silence unused function warning when graphviz is not available. 2012-03-08 22:15:23 +00:00
Hashing.cpp Add the source file with trivial definitions in it that was missing from 2012-03-01 18:58:59 +00:00
Host.cpp Remove unreachable code. (replace with llvm_unreachable to help GCC where necessary) 2012-01-17 04:43:56 +00:00
IncludeFile.cpp Clean up a few references to System/. We still have docs/SystemLibrary.html 2011-10-11 20:02:52 +00:00
IntEqClasses.cpp Use IntEqClasses to compute connected components of live intervals. 2010-12-21 00:48:17 +00:00
IntervalMap.cpp Add IntervalMap::iterator::set{Start,Stop,Value} methods that allow limited 2010-12-03 19:02:00 +00:00
IntrusiveRefCntPtr.cpp Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
IsInf.cpp
IsNAN.cpp
JSONParser.cpp fix typo 2012-02-06 05:29:29 +00:00
LLVMBuild.txt LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
LockFileManager.cpp Move Clang's file-level locking facility over to LLVM's support 2012-01-29 20:15:10 +00:00
Makefile Merge System into Support. 2010-11-29 18:16:10 +00:00
ManagedStatic.cpp Add support for tsan annotations (thread sanitizer, a valgrind-based tool). 2011-11-14 20:50:16 +00:00
Memory.cpp The Mips specific function for instruction cache invalidation cannot be 2011-10-10 18:41:02 +00:00
MemoryBuffer.cpp Add a sanity check in MemoryBuffer::getOpenFile() to make sure we don't hang 2012-03-13 20:18:42 +00:00
MemoryObject.cpp Make MemoryObject accessor members const again 2012-02-29 01:09:06 +00:00
Mutex.cpp Persuade GCC that there is nothing worth warning about here (there isn't). 2012-02-05 14:20:11 +00:00
Path.cpp Support/FileSystem: Add file_magic and move a vew clients over to it. 2011-12-13 23:17:12 +00:00
PathV2.cpp Support/PathV2: Fix namespace qualifier in make_absolute(), for Win32. 2012-02-29 00:46:46 +00:00
PluginLoader.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
PrettyStackTrace.cpp Add more initializers to quiet a clang warning. 2011-10-05 05:00:26 +00:00
Process.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Program.cpp Support/Program: Make Change<stream>ToBinary return error_code. 2011-12-13 23:16:49 +00:00
raw_os_ostream.cpp
raw_ostream.cpp Support/Program: Make Change<stream>ToBinary return error_code. 2011-12-13 23:16:49 +00:00
README.txt.system Merge System into Support. 2010-11-29 18:16:10 +00:00
regcclass.h
regcname.h
regcomp.c lib/Support/regcomp.c: Fix cygwin warning. 2011-03-08 12:25:29 +00:00
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 lib/Support/regexec.c: Let Regex LLP64-aware. 2010-12-16 01:48:15 +00:00
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp Remove dead code. 2012-01-15 01:09:13 +00:00
SearchForAddressOfSpecialSymbol.cpp These symbols appear to be visible by SearchForAddressOfSymbol and no longer 2011-09-27 20:01:41 +00:00
Signals.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
SmallPtrSet.cpp Copy the right amount of elements. 2012-03-07 22:48:42 +00:00
SmallVector.cpp
SourceMgr.cpp Removing unused default switch cases in switches over enums that already account for all enumeration values explicitly. 2012-01-16 23:24:27 +00:00
Statistic.cpp Silence tsan false-positives (tsan can't track things which are only safe due to 2011-12-05 23:07:05 +00:00
StreamableMemoryObject.cpp Make MemoryObject accessor members const again 2012-02-29 01:09:06 +00:00
StringExtras.cpp Move the implementation of StringRef::split out of StringExtras.cpp 2012-02-21 12:00:25 +00:00
StringMap.cpp Switch StringMap from an array of structures to a structure of arrays. 2011-12-27 20:35:07 +00:00
StringPool.cpp
StringRef.cpp Make StringRef::getAsInteger work with all integer types. Before this change 2012-03-10 23:02:54 +00:00
system_error.cpp Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients. 2010-12-09 17:36:48 +00:00
SystemUtils.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
TargetRegistry.cpp revert r147542 after comments from Joerg Sonnenberger 2012-01-05 18:28:46 +00:00
Threading.cpp rename ENABLE_THREADS to LLVM_ENABLE_THREADS 2011-11-28 00:48:58 +00:00
ThreadLocal.cpp rename ENABLE_THREADS to LLVM_ENABLE_THREADS 2011-11-28 00:48:58 +00:00
Timer.cpp Add more PRI.64 macros for MSVC and use them throughout the codebase. 2011-11-05 08:57:40 +00:00
TimeValue.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
ToolOutputFile.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Triple.cpp Add support for r600 (AMD GPUs HD2XXX - HD6XXX) target triplet. 2012-03-09 10:09:36 +00:00
Twine.cpp Add Twine support for characters, and switch twine to use a union internally 2011-07-24 20:44:30 +00:00
Valgrind.cpp Don't define these unless we plan to use them. 2011-11-28 22:14:02 +00:00

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