llvm/lib/Support
Nuno Lopes 790b973f80 simplify ConstantRange::getSetSize()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193523 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-28 16:52:38 +00:00
..
Unix Fix build on Solaris 11. 2013-10-08 16:12:58 +00:00
Windows Fix a conversion warning in the mingw32 build 2013-10-18 07:53:25 +00:00
Allocator.cpp [BumpPtrAllocator] Move DefaultSlabAllocator to a member of BumpPtrAllocator, instead of a static variable. 2013-08-28 01:02:21 +00:00
APFloat.cpp Change default # of digits for APFloat::toString 2013-08-29 23:44:34 +00:00
APInt.cpp APInt: Simplify code. No functionality change. 2013-06-01 11:26:39 +00:00
APSInt.cpp
Atomic.cpp XLC supports the same atomic functions as GCC, use them. 2012-11-02 20:54:45 +00:00
BlockFrequency.cpp Fix a bad overflow check pointed out by Ben. 2013-06-28 21:51:18 +00:00
BranchProbability.cpp Print branch probabilities as percentages. 2011-10-23 11:32:54 +00:00
circular_raw_ostream.cpp
CMakeLists.txt Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
CommandLine.cpp Implement TokenizeWindowsCommandLine. 2013-07-30 19:03:20 +00:00
Compression.cpp Expose CRC-32 implementation from zlib 2013-08-14 16:03:29 +00:00
ConstantRange.cpp simplify ConstantRange::getSetSize() 2013-10-28 16:52:38 +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 [Support] Add a Unicode conversion wrapper from UTF16 to UTF8 2013-07-16 17:14:33 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp This switches CrashRecoveryContext to using ManagedStatic for its global Mutex and 2013-09-12 17:46:57 +00:00
DAGDeltaAlgorithm.cpp Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
DataExtractor.cpp Make the host endianness check an integer constant expression. 2013-04-15 14:44:24 +00:00
DataStream.cpp Add a wrapper for open. 2013-07-16 19:44:17 +00:00
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 Remove some std stream usage from Support and TableGen 2013-08-06 22:51:21 +00:00
Dwarf.cpp Formally added an explicit enum for DWARF TLS support. No functionality change. 2013-10-07 18:39:18 +00:00
DynamicLibrary.cpp Make DynamicLibrary use ManagedStatic. This is pretty simple and should just work as 2013-09-18 16:40:14 +00:00
Errno.cpp Fix some rather confusing indentation and control flow in the errno 2013-09-02 05:55:10 +00:00
ErrorHandling.cpp Fix the -Werror -Wpedantic clang selfhost build 2013-10-22 12:30:55 +00:00
FileOutputBuffer.cpp Create files with the correct permission instead of changing it afterwards. 2013-07-08 15:22:09 +00:00
FileUtilities.cpp MemoryBuffer::getFile handles zero sized files, no need to duplicate the test. 2013-07-10 17:30:39 +00:00
FoldingSet.cpp Make the host endianness check an integer constant expression. 2013-04-15 14:44:24 +00:00
FormattedStream.cpp Add line tracking support to FormattedStream 2013-05-08 20:29:10 +00:00
GraphWriter.cpp Remove several unused variables. 2013-10-01 13:32:03 +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 Adds support for Atom Silvermont (SLM) - -march=slm 2013-09-13 19:23:28 +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
LLVMBuild.txt LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
Locale.cpp Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
LockFileManager.cpp Fix boolean logic in LockFileManager and test it 2013-08-07 01:22:04 +00:00
Makefile Don't explicitly require RTTI and EH. 2012-10-26 12:15:29 +00:00
ManagedStatic.cpp Add support for tsan annotations (thread sanitizer, a valgrind-based tool). 2011-11-14 20:50:16 +00:00
MD5.cpp Add support for adding the contents of a StringRef to the MD5 hash. 2013-05-31 22:34:56 +00:00
Memory.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MemoryBuffer.cpp Change MemoryBuffer::getFile to take a Twine. 2013-10-25 19:06:52 +00:00
MemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
Mutex.cpp Add support for the OpenBSD for Bitrig. 2012-08-06 20:52:18 +00:00
Path.cpp Fix a bug in Windows resource file detection. 2013-10-16 03:29:49 +00:00
PluginLoader.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
PrettyStackTrace.cpp Make PrettyStackTraceEntry use ManagedStatic for its ThreadLocal. 2013-09-13 22:59:47 +00:00
Process.cpp Support ANSI escape code on Windows 2013-09-11 00:36:48 +00:00
Program.cpp Add non-blocking Wait() for launched processes 2013-10-01 14:28:18 +00:00
raw_os_ostream.cpp
raw_ostream.cpp raw_fd_ostream: Be more verbose about the reason when opening a file fails. 2013-10-03 16:59:14 +00:00
README.txt.system Merge System into Support. 2010-11-29 18:16:10 +00:00
regcclass.h
regcname.h
regcomp.c Add backreference matching capabilities to Support/Regex, with 2012-11-28 19:00:02 +00:00
regengine.inc
regerror.c
regex2.h
regex_impl.h
Regex.cpp Fix off-by-one error in Regex::isValid 2013-08-08 17:32:45 +00:00
regexec.c Fix integer undefined behavior due to signed left shift overflow in LLVM. 2012-08-24 23:29:28 +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 SmallVector and SmallPtrSet allocations now power-of-two aligned. 2013-03-29 22:07:12 +00:00
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 diagnotics printing: fix a bug where printing a fixit for a source 2013-09-27 21:24:36 +00:00
Statistic.cpp Disable statistics on Release builds and move tests that depend on -stats. 2013-03-08 22:56:31 +00:00
StreamableMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
StringExtras.cpp Move the implementation of StringRef::split out of StringExtras.cpp 2012-02-21 12:00:25 +00:00
StringMap.cpp Add some __builtin_expect magic to StringMap. 2012-08-29 22:57:04 +00:00
StringPool.cpp
StringRef.cpp Added const qualifier to StringRef::edit_distance member function 2013-08-24 01:50:41 +00:00
StringRefMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
system_error.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
SystemUtils.cpp Move PrependMainExecutablePath next to its only user. 2013-06-14 15:12:13 +00:00
TargetRegistry.cpp Provide basic type safety for array_pod_sort comparators. 2013-09-22 14:09:50 +00:00
Threading.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
ThreadLocal.cpp Fix ThreadLocalImpl::getInstance for --disable-threads. 2012-06-26 17:13:58 +00:00
Timer.cpp Add a wrapper for open. 2013-07-16 19:44:17 +00:00
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 Add a wrapper for open. 2013-07-16 19:44:17 +00:00
Triple.cpp [PowerPC] Support powerpc64le as a syntax-checking target. 2013-07-26 01:35:43 +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
Unicode.cpp Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
Valgrind.cpp Don't define these unless we plan to use them. 2011-11-28 22:14:02 +00:00
Watchdog.cpp Add a new watchdog timer interface. The interface does not permit handling timeouts, so 2013-03-26 01:27:52 +00:00
YAMLParser.cpp Can we move to C++11 already? 2013-10-18 23:07:01 +00:00
YAMLTraits.cpp Reverting my r193344 checkin due to build breakage. 2013-10-24 14:52:56 +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