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llvm-6502/include/llvm/Support
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Eli Bendersky 6b731486d4 Add backreference matching capabilities to Support/Regex, with 
appropriate unit tests. This change in itself is not expected to
affect any functionality at this point, but it will serve as a
stepping stone to improve FileCheck's variable matching capabilities.

Luckily, our regex implementation already supports backreferences,
although a bit of hacking is required to enable it. It supports both
Basic Regular Expressions (BREs) and Extended Regular Expressions
(EREs), without supporting backrefs for EREs, following POSIX strictly
in this respect. And EREs is what we actually use (rightly). This is
contrary to many implementations (including the default on Linux) of
POSIX regexes, that do allow backrefs in EREs.

Adding backref support to our EREs is a very simple change in the
regcomp parsing code. I fail to think of significant cases where it
would clash with existing things, and can bring more versatility to
the regexes we write. There's always the danger of a backref in a
specially crafted regex causing exponential matching times, but since
we mainly use them for testing purposes I don't think it's a big
problem. [it can also be placed behind a flag specific to FileCheck,
if needed].

For more details, see:

* http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-November/055840.html
* http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121126/156878.html



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-28 19:00:02 +00:00
..
AIXDataTypesFix.h
AlignOf.h xlc supports __attribute__((aligned(x))), use it. 2012-10-31 00:54:26 +00:00
Allocator.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
Atomic.h
BlockFrequency.h
BranchProbability.h
CallSite.h Use the attribute builder to add attributes to call/invoke instruction. No functionality change intended. 2012-10-09 23:40:31 +00:00
Capacity.h
Casting.h Casting.h: Automatically handle isa<Base>(Derived). 2012-10-11 23:30:40 +00:00
CFG.h
circular_raw_ostream.h Use empty parens for empty function parameter list instead of '(void)'. 2012-11-15 16:51:49 +00:00
CodeGen.h
COFF.h
CommandLine.h Add missing this->. Fixes pr14238. 2012-11-05 14:57:21 +00:00
Compiler.h Add an extra slash so doxygen comments will be properly recognized. 2012-11-25 00:59:59 +00:00
ConstantFolder.h
ConstantRange.h
CrashRecoveryContext.h
DataExtractor.h Add a relocation visitor to lib object. This works via caching relocated 2012-11-07 23:22:07 +00:00
DataFlow.h
DataStream.h
DataTypes.h.cmake
DataTypes.h.in
Debug.h
DebugLoc.h
Disassembler.h
DOTGraphTraits.h
Dwarf.h Add constant definitions for fission dwarf attributes, forms, etc. 2012-11-16 23:04:31 +00:00
DynamicLibrary.h
ELF.h This patch implements medium code model support for 64-bit PowerPC. 2012-11-27 17:35:46 +00:00
Endian.h
Errno.h
ErrorHandling.h
FEnv.h
FileOutputBuffer.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:31:17 +00:00
FileSystem.h Fix a couple of Doxygen comment issues pointed out by -Wdocumentation. 2012-09-12 16:59:47 +00:00
FileUtilities.h
Format.h Fix Doxygen issues: 2012-09-14 14:57:36 +00:00
FormattedStream.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
GCOV.h Stop casting away const qualifier needlessly. 2012-09-05 22:26:57 +00:00
GetElementPtrTypeIterator.h Fix the instcombine GEP index widening transform to work correctly for vector 2012-11-13 13:01:00 +00:00
GraphWriter.h
Host.h
IncludeFile.h
InstIterator.h
InstVisitor.h va_start, va_end, va_copy: InstrinsicInst subclasses and InstVisitor support. 2012-10-29 09:39:03 +00:00
IntegersSubset.h Fix the IntegersSubsetTest unit test when compiled with gcc-4.7. The issue here 2012-11-03 14:04:04 +00:00
IntegersSubsetMapping.h
IRReader.h
LeakDetector.h
LEB128.h Fix a couple include directives that used angle brackets for llvm files. 2012-09-15 18:41:37 +00:00
LICENSE.TXT
Locale.h
LockFileManager.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
MachO.h
ManagedStatic.h
MathExtras.h Fix Doxygen issues: 2012-09-13 12:34:29 +00:00
Memory.h Correcting enum values mentioned in comments. 2012-10-12 21:47:49 +00:00
MemoryBuffer.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
MemoryObject.h
Mutex.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
MutexGuard.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:31:17 +00:00
NoFolder.h
OutputBuffer.h
PassNameParser.h
Path.h
PathV1.h 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
PathV2.h Fix a doxygen issue: these examples are supposed to be displayed preformatted. 2012-09-13 11:42:30 +00:00
PatternMatch.h
PluginLoader.h
PointerLikeTypeTraits.h
PredIteratorCache.h
PrettyStackTrace.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
Process.h
Program.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
raw_os_ostream.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
raw_ostream.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
Recycler.h
RecyclingAllocator.h
Regex.h Add backreference matching capabilities to Support/Regex, with 2012-11-28 19:00:02 +00:00
Registry.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:31:17 +00:00
RegistryParser.h
RWMutex.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
SaveAndRestore.h
Signals.h
SMLoc.h
Solaris.h
SourceMgr.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
StreamableMemoryObject.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
StringPool.h
SwapByteOrder.h
system_error.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
SystemUtils.h
TargetFolder.h Move TargetData to DataLayout. 2012-10-08 16:38:25 +00:00
TargetRegistry.h When creating MCAsmBackend pass the CPU string as well. In X86AsmBackend 2012-09-18 16:08:49 +00:00
TargetSelect.h
Threading.h Fix Doxygen issues: 2012-09-13 12:34:29 +00:00
ThreadLocal.h
Timer.h Use LLVM_DELETED_FUNCTION for copy constructors and copy assignment operators that aren't implemented. 2012-09-16 21:37:56 +00:00
TimeValue.h 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
ToolOutputFile.h
type_traits.h Fix some code which is invalid in C++11: an expression of enumeration type 2012-09-13 21:18:18 +00:00
Valgrind.h
ValueHandle.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:31:17 +00:00
Win64EH.h
YAMLParser.h Allow using MemoryBuffers with yaml::Stream directly. 2012-11-19 23:21:47 +00:00