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6b731486d4
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 Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
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 Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
BlockFrequency.h Add missing includes/class declaration. 2011-11-04 18:30:30 +00:00
BranchProbability.h Make an obviously const interface actually be marked as const. 2011-11-20 11:22:03 +00:00
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 Add missing includes/class declaration. 2011-11-04 18:30:30 +00:00
Casting.h Casting.h: Automatically handle isa<Base>(Derived). 2012-10-11 23:30:40 +00:00
CFG.h Calls and invokes with the new clang.arc.no_objc_arc_exceptions 2012-02-17 18:59:53 +00:00
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 Move the TLSModel information into the TargetMachine rather than hiding 2012-04-08 17:20:55 +00:00
COFF.h [yaml2obj] Fix incorrect use of signed values. 2012-08-14 22:42:31 +00:00
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 Convert ConstantExpr::getGetElementPtr and 2011-07-21 14:31:17 +00:00
ConstantRange.h add ConstantRange::difference (to perform set difference/relative complement) 2012-06-28 16:10:13 +00:00
CrashRecoveryContext.h Add explicit 'unregister' method to CrashRecoveryConextCleanupRegistrar. 2011-05-04 23:26:59 +00:00
DataExtractor.h Add a relocation visitor to lib object. This works via caching relocated 2012-11-07 23:22:07 +00:00
DataFlow.h Fix build of DataFlow.h 2010-08-04 09:30:20 +00:00
DataStream.h Fix comment-rulers. 2012-02-06 22:41:47 +00:00
DataTypes.h.cmake Remove OpenBSD defines: 2012-08-08 18:37:39 +00:00
DataTypes.h.in Remove OpenBSD defines: 2012-08-08 18:37:39 +00:00
Debug.h Typos. 2012-07-27 21:41:59 +00:00
DebugLoc.h Pull the simple parts of DenseMapInfo<DebugLoc> inline and prune includes. 2012-07-19 15:00:34 +00:00
Disassembler.h Merge System into Support. 2010-11-29 18:16:10 +00:00
DOTGraphTraits.h Delete names for unused parameters in inline function definitions in headers, so LLVM users can compile with -Wunused-parameter. PR11257; based on patch by Kevin Harris. 2011-11-04 18:11:56 +00:00
Dwarf.h Add constant definitions for fission dwarf attributes, forms, etc. 2012-11-16 23:04:31 +00:00
DynamicLibrary.h Add missing includes/class declaration. 2011-11-04 18:30:30 +00:00
ELF.h This patch implements medium code model support for 64-bit PowerPC. 2012-11-27 17:35:46 +00:00
Endian.h Remove 'static' from inline functions defined in header files. 2012-06-20 08:39:33 +00:00
Errno.h Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
ErrorHandling.h Version N of the llvm_unreachable patch: VC++ doesn't recognize that abort() 2011-03-14 22:41:50 +00:00
FEnv.h Add missing file. 2011-06-23 14:02:13 +00:00
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 Fix whitespace. 2011-03-31 13:06:39 +00:00
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 Fixed few warnings. 2012-07-19 04:50:12 +00:00
Host.h revert r147542 after comments from Joerg Sonnenberger 2012-01-05 18:28:46 +00:00
IncludeFile.h Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
InstIterator.h Don't attribute in file headers anymore. See llvmdev for the 2007-12-29 19:59:42 +00:00
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 BranchProb: modify the definition of an edge in BranchProbabilityInfo to handle 2012-08-24 18:14:27 +00:00
IRReader.h Make SMDiagnostic a little more sane. Instead of passing around note/warning/error as a 2011-10-16 05:43:57 +00:00
LeakDetector.h Make a few headers standalone. Plus, add a missing "template" keyword 2009-11-05 13:30:28 +00:00
LEB128.h Fix a couple include directives that used angle brackets for llvm files. 2012-09-15 18:41:37 +00:00
LICENSE.TXT Merge System into Support. 2010-11-29 18:16:10 +00:00
Locale.h platform support for counting column widths and checking isprint 2012-04-17 20:03:03 +00:00
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 Remove tabs. 2012-07-19 00:01:00 +00:00
ManagedStatic.h Add support for tsan annotations (thread sanitizer, a valgrind-based tool). 2011-11-14 20:50:16 +00:00
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 Make MemoryObject accessor members const again 2012-02-29 01:09:06 +00:00
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 Insertion of NoFolder functions to avoid ambiguous overload warnings or errors about whether to convert Idx to ArrayRef<Constant *> or ArrayRef<Value *> like ConstantFolder and TargetFolder. 2012-08-17 08:54:57 +00:00
OutputBuffer.h Make a few headers standalone. Plus, add a missing "template" keyword 2009-11-05 13:30:28 +00:00
PassNameParser.h Shrink PassNameParser's binary size with array_pod_sort. 2010-08-07 11:45:42 +00:00
Path.h Support: Rename Path.h to PathV1.h and add a new Path.h that includes both V1 and V2. 2010-12-17 17:22:36 +00:00
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 Revert commit 149912 (lattner) and add a testcase that shows the problem (which 2012-02-10 14:26:42 +00:00
PluginLoader.h Don't attribute in file headers anymore. See llvmdev for the 2007-12-29 19:59:42 +00:00
PointerLikeTypeTraits.h Merge System into Support. 2010-11-29 18:16:10 +00:00
PredIteratorCache.h Add caching of predecessor counts as well as predecessors themselves. 2009-04-22 08:46:33 +00:00
PrettyStackTrace.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
Process.h Process: Add sys::Process::FileDescriptorHasColors(). 2012-07-20 18:29:38 +00:00
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 Convert assert(0) to llvm_unreachable 2012-02-05 22:14:15 +00:00
RecyclingAllocator.h Provide operator delete for BumpPtrAllocator and RecyclingAllocator. They will 2010-04-08 15:22:35 +00:00
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 Registry.h should not depend on CommandLine.h. 2009-01-16 07:02:28 +00:00
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 Move include/llvm/ADT/SaveAndRestore.h -> include/llvm/Support/SaveAndRestore.h 2012-03-01 19:45:47 +00:00
Signals.h Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
SMLoc.h Remove some trivial copy ctors so the classes become trivially copyable and get the optimized SmallVector implementation. 2012-07-08 19:47:51 +00:00
Solaris.h Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
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 Don't pass StringRef by reference. 2010-07-14 22:38:02 +00:00
SwapByteOrder.h Merge System into Support. 2010-11-29 18:16:10 +00:00
system_error.h Add LLVM_OVERRIDE to methods that override their base classes. 2012-09-23 02:12:10 +00:00
SystemUtils.h Rename FindExecutable to PrependMainExecutablePath. 2010-11-03 16:14:16 +00:00
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 Add InitializeNativeTargetDisassembler function. 2012-03-26 21:56:56 +00:00
Threading.h Fix Doxygen issues: 2012-09-13 12:34:29 +00:00
ThreadLocal.h Remove use of GNU extension to resolve Clang warning. 2012-06-12 17:06:32 +00:00
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 Move tool_output_file into its own file. 2010-10-07 20:32:40 +00:00
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 use llvm-config.h in public header 2011-11-28 00:49:01 +00:00
ValueHandle.h Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 2012-09-17 06:31:17 +00:00
Win64EH.h Fix definitions of UOP_SaveXMM128, UOP_SaveXMM128Big, and UOP_PushMachFrame 2011-05-26 05:24:15 +00:00
YAMLParser.h Allow using MemoryBuffers with yaml::Stream directly. 2012-11-19 23:21:47 +00:00