llvm-6502/lib/Support
2014-08-21 04:31:10 +00:00
..
Unix Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
Windows Remove dead code. Fixes pr20544. 2014-08-08 21:35:52 +00:00
Allocator.cpp [Allocator] Hoist the external helper function into a namespace scope 2014-04-14 06:42:56 +00:00
APFloat.cpp APFloat: x - NaN needs to flip the signbit of NaN when x is a number. 2014-06-08 16:53:31 +00:00
APInt.cpp [Modules] Fix potential ODR violations by sinking the DEBUG_TYPE 2014-04-22 03:07:47 +00:00
APSInt.cpp
ARMBuildAttrs.cpp ARM: update build attributes for ABI r2.09 2014-01-19 08:25:35 +00:00
ARMWinEH.cpp Support: add Windows ARM EH data structures 2014-06-02 01:17:49 +00:00
Atomic.cpp Fix .cpp files claiming to be header files 2014-06-20 01:36:00 +00:00
BlockFrequency.cpp blockfreq: Defer to BranchProbability::scale() (again) 2014-04-29 16:31:29 +00:00
BranchProbability.cpp BranchProb: Simplify printing code 2014-04-29 17:07:42 +00:00
circular_raw_ostream.cpp
CMakeLists.txt Remove Support/IncludeFile.h and its only user. This is actively harmful, since 2014-08-07 20:41:17 +00:00
CommandLine.cpp Revert "[Support] Promote cl::StringSaver to a separate utility" 2014-08-15 23:39:01 +00:00
Compression.cpp Simplify compression API by compressing into a SmallVector rather than a MemoryBuffer 2014-04-05 21:53:04 +00:00
ConvertUTF.c Support/ConvertUTF: restore compatibility with MSVC, which only implements C89 2014-06-16 11:22:33 +00:00
ConvertUTFWrapper.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp For CrashRecoveryContext::RunSafelyOnThread, propagate Darwin's PRIO_DARWIN_BG to the new thread if it is 2014-06-25 23:54:50 +00:00
DAGDeltaAlgorithm.cpp [Modules] Make Support/Debug.h modular. This requires it to not change 2014-04-21 22:55:11 +00:00
DataExtractor.cpp Using llvm::sys::swapByteOrder() for the common case of byte-swapping a value in place 2014-06-14 13:18:07 +00:00
DataStream.cpp Remove 'using std::errro_code' from lib. 2014-06-13 02:24:39 +00:00
Debug.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
DeltaAlgorithm.cpp
Dwarf.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
DynamicLibrary.cpp Fix .cpp files claiming to be header files 2014-06-20 01:36:00 +00:00
Errno.cpp
ErrorHandling.cpp Merge lib/Support/WindowsError.cpp into ib/Support/ErrorHandling.cpp. 2014-06-17 18:06:45 +00:00
FileOutputBuffer.cpp Remove uses of the redundant ".reset(nullptr)" of unique_ptr, in favor of ".reset()" 2014-07-19 01:05:11 +00:00
FileUtilities.cpp Remove some calls to std::move. 2014-08-01 14:31:55 +00:00
FoldingSet.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
FormattedStream.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
GraphWriter.cpp Don't use 'using std::error_code' in include/llvm. 2014-06-12 21:46:39 +00:00
Hashing.cpp
Host.cpp Add support for ppc64/power8 as a host 2014-06-26 13:37:03 +00:00
IntEqClasses.cpp
IntervalMap.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LEB128.cpp Don't inline get[S|U]LEB128Size() until they are proved to be hot. 2014-02-22 15:39:39 +00:00
LineIterator.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
LLVMBuild.txt
Locale.cpp
LockFileManager.cpp Remove some calls to std::move. 2014-08-01 14:31:55 +00:00
Makefile Support: Inject LLVM_VERSION_INFO into the Support library 2014-06-17 06:52:47 +00:00
ManagedStatic.cpp Fix the MinGW builder. Apparently std::call_once and 2014-06-21 00:24:51 +00:00
MD5.cpp
Memory.cpp
MemoryBuffer.cpp Don't own the buffer in object::Binary. 2014-08-19 18:44:46 +00:00
MemoryObject.cpp
Mutex.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
Path.cpp Fix the windows build. 2014-08-08 22:09:31 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Process.cpp Refactor the code in clang to find a file in a PATH like environment variable into a helper function 2014-06-30 19:54:20 +00:00
Program.cpp Fix .cpp files claiming to be header files 2014-06-20 01:36:00 +00:00
RandomNumberGenerator.cpp Random Number Generator (llvm) 2014-06-25 15:21:42 +00:00
raw_os_ostream.cpp
raw_ostream.cpp Typo: exists -> exits 2014-07-17 18:33:44 +00:00
README.txt.system
regcclass.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
regcname.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
regcomp.c Fix known typos 2014-01-24 17:20:08 +00:00
regengine.inc Clean up language and grammar. 2014-05-20 17:11:11 +00:00
regerror.c
regex2.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
regex_impl.h
Regex.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
RWMutex.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
ScaledNumber.cpp Fix undefined behavior (left shift by 64 bits) in ScaledNumber::toString(). 2014-08-20 18:30:07 +00:00
SearchForAddressOfSpecialSymbol.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Signals.cpp
SmallPtrSet.cpp Fix an off by 1 bug that prevented SmallPtrSet from using all of its 'small' capacity. Then fix the early return in the move constructor that prevented 'small' moves from clearing the NumElements in the moved from object. The directed test missed this because it was always testing large moves due to the off by 1 bug. 2014-08-20 04:41:36 +00:00
SmallVector.cpp
SourceMgr.cpp SourceMgr: consistently use 'unsigned' for the memory buffer ID type 2014-07-09 08:30:15 +00:00
SpecialCaseList.cpp Remove move assignment operator to appease older GCCs. 2014-07-10 04:39:40 +00:00
Statistic.cpp Revert "[C++11] Replace LLVM atomics with std::atomic." 2014-03-03 18:02:34 +00:00
StreamableMemoryObject.cpp [C++11] Remove 'virtual' keyword from methods marked with 'override' keyword. 2014-03-10 03:53:12 +00:00
StringExtras.cpp
StringMap.cpp Recommit 211309 (StringMap::insert), reverted in 211328 due to issues with private, but non-deleted, move members. 2014-06-23 18:28:53 +00:00
StringPool.cpp Convert StringMapEntry::Create to use StringRef instead of start/end pointers. Simpliies all in tree call sites. No functional change. 2014-06-11 05:35:56 +00:00
StringRef.cpp Remove custom implementations of max/min in StringRef that was originally added to work an old gcc bug. I believe its been fixed by now. 2014-08-21 04:31:10 +00:00
StringRefMemoryObject.cpp
SystemUtils.cpp
TargetRegistry.cpp Remove obsolete function TargetRegistry::getClosestTargetForJIT() 2014-07-01 10:47:13 +00:00
Threading.cpp Re-apply r211287: Remove support for LLVM runtime multi-threading. 2014-06-27 15:13:01 +00:00
ThreadLocal.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Timer.cpp Kill the LLVM global lock. 2014-06-19 16:17:42 +00:00
TimeValue.cpp Fix 'platform-specific' hyphenations 2014-06-30 18:57:16 +00:00
ToolOutputFile.cpp Use the simpler version of sys::fs::remove when possible. 2014-01-10 21:40:29 +00:00
Triple.cpp Delete support for AuroraUX. 2014-08-14 15:15:09 +00:00
Twine.cpp Remove unnecessary llvm:: qualification. 2014-02-26 23:27:16 +00:00
Unicode.cpp
Valgrind.cpp Don't mark the declarations of the TSan annotation functions as weak. 2014-03-30 11:20:25 +00:00
Watchdog.cpp
YAMLParser.cpp Convert an ownership comment with std::uinque_ptr. 2014-08-17 22:20:33 +00:00
YAMLTraits.cpp Fix bug 20125 - clang-format segfaults on bad config. 2014-08-08 13:58:00 +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