llvm/Support at 714973e459d6611dd3e67f77968aba55528664b4 - llvm

RPCS3/llvm

mirror of https://github.com/RPCS3/llvm.git synced 2024-12-27 14:45:50 +00:00

History

Rafael Espindola b4e971f376 Enable response files in all tools. Patch by Liu, Yaxun (Sam). I have simplified the test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165535 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-09 19:52:10 +00:00
..
Unix	Make backtraces work again with both the configure and cmake build.	2012-09-28 10:10:46 +00:00
Windows	Fix a -Wparentheses warning in the mingw build	2012-09-25 05:24:16 +00:00
Allocator.cpp
APFloat.cpp	APFloat::roundToIntegral: Special values don't keep the exponent value up to date, don't rely on it.	2012-09-26 14:06:58 +00:00
APInt.cpp	Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767	2012-09-27 10:14:43 +00:00
APSInt.cpp
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
circular_raw_ostream.cpp
CMakeLists.txt
CommandLine.cpp	Enable response files in all tools. Patch by Liu, Yaxun (Sam). I have simplified	2012-10-09 19:52:10 +00:00
ConstantRange.cpp
COPYRIGHT.regex
CrashRecoveryContext.cpp
DAGDeltaAlgorithm.cpp
DataExtractor.cpp
DataStream.cpp
Debug.cpp
DeltaAlgorithm.cpp
Disassembler.cpp
Dwarf.cpp
DynamicLibrary.cpp
Errno.cpp	Replace the use of strncpy() and sprintf() with std::string and LLVM streams.	2012-09-28 14:15:28 +00:00
ErrorHandling.cpp
FileOutputBuffer.cpp
FileUtilities.cpp
FoldingSet.cpp
FormattedStream.cpp
GraphWriter.cpp
Hashing.cpp
Host.cpp	Add support for detecting some corei7-class Xeons.	2012-09-26 18:21:47 +00:00
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
Path.cpp
PathV2.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
regexec.c
regfree.c
regstrlcpy.c
regutils.h
RWMutex.cpp
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp
SmallVector.cpp
SourceMgr.cpp
Statistic.cpp	Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767	2012-09-27 10:14:43 +00:00
StreamableMemoryObject.cpp
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp	Improve overflow detection in StringRef::getAsUnsignedInteger().	2012-10-02 20:01:48 +00:00
system_error.cpp
SystemUtils.cpp
TargetRegistry.cpp
Threading.cpp
ThreadLocal.cpp
Timer.cpp
TimeValue.cpp
ToolOutputFile.cpp
Triple.cpp	Support for generating ELF objects on Windows.	2012-10-02 18:38:34 +00:00
Twine.cpp
Valgrind.cpp
YAMLParser.cpp	YAMLParser: Fix invalid reads when encountering incorrectly quoted scalar.	2012-09-26 15:52:15 +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