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llvm-mirror/include/llvm/Support
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Colin LeMahieu d875c88104 [Hexagon] Adding relocation for code size, cold path optimization allowing a 23-bit 4-byte aligned relocation to be a valid instruction encoding. 
The usual way to get a 32-bit relocation is to use a constant extender which doubles the size of the instruction, 4 bytes to 8 bytes.

Another way is to put a .word32 and mix code and data within a function.  The disadvantage is it's not a valid instruction encoding and jumping over it causes prefetch stalls inside the hardware.

This relocation packs a 23-bit value in to an "r0 = add(rX, #a)" instruction by overwriting the source register bits.  Since r0 is the return value register, if this instruction is placed after a function call which return void, r0 will be filled with an undefined value, the prefetch won't be confused, and the callee can access the constant value by way of the link register.

llvm-svn: 261006
2016-02-16 20:38:17 +00:00
..
ELFRelocs [Hexagon] Adding relocation for code size, cold path optimization allowing a 23-bit 4-byte aligned relocation to be a valid instruction encoding. 2016-02-16 20:38:17 +00:00
AlignOf.h Fix Clang-tidy modernize-use-nullptr and modernize-use-override warnings; other minor fixes. 2016-01-26 18:48:36 +00:00
Allocator.h BumpPtrAllocator::Reset should also poison the first slab which doesn't get deallocated. 2016-01-11 21:28:03 +00:00
ARMBuildAttributes.h [ARM] Add DSP build attribute and extension targeting 2016-01-25 11:26:11 +00:00
ARMEHABI.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
ARMTargetParser.def [ARM] Add DSP build attribute and extension targeting 2016-01-25 11:26:11 +00:00
ARMWinEH.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
ArrayRecycler.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Atomic.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
BlockFrequency.h Add - and -= operators to BlockFrequency using saturating arithmetic. 2015-10-12 18:34:00 +00:00
BranchProbability.h Minor code cleanups. NFC. 2016-02-15 04:30:37 +00:00
Capacity.h
Casting.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
CBindingWrapping.h Reorganize the C API headers to improve build times. 2015-12-18 01:46:52 +00:00
circular_raw_ostream.h Reformat headers in ADT and Support partially. 2015-08-10 04:22:36 +00:00
CodeGen.h Support: Fix incremental build when re-configuring targets 2016-02-13 22:58:43 +00:00
CodeGenCWrappers.h Support: Fix incremental build when re-configuring targets 2016-02-13 22:58:43 +00:00
COFF.h Reland "[CodeView] Use assembler directives for line tables" 2016-01-29 00:49:42 +00:00
COM.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
CommandLine.h StringRef-ify some Option APIs 2015-11-17 19:00:52 +00:00
Compiler.h Enable constexpr on Visual Studio 2015, add support for two equivalent attributes 2016-02-10 19:07:47 +00:00
Compression.h
ConvertUTF.h
CrashRecoveryContext.h Fix Clang-tidy modernize-use-nullptr warnings in examples and include directories; other minor cleanups. 2015-09-29 18:02:48 +00:00
DataExtractor.h
DataStream.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
DataTypes.h.cmake Remove references to *.h.in files and some autoconf hackery 2016-01-30 04:15:33 +00:00
Debug.h docs: Stop using DEBUG() without DEBUG_TYPE in the ProgrammersManual 2015-10-15 18:17:44 +00:00
DOTGraphTraits.h Make the SelectionDAG graph printer use SDNode::PersistentId labels. 2015-10-27 23:09:03 +00:00
Dwarf.def DWARF RenderScript vendor extension 2016-02-01 10:39:24 +00:00
Dwarf.h Add support for the .debug_macro section of the forthcoming DWARF 5 spec. 2015-12-15 21:50:27 +00:00
DynamicLibrary.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
ELF.h Reinstate the second part of a comment. NFC. 2016-01-19 23:39:28 +00:00
Endian.h [readobj] Expand CodeView dumping functionality 2016-01-13 19:32:35 +00:00
EndianStream.h Typo fix and simplification. 2016-01-22 19:58:18 +00:00
Errc.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Errno.h
ErrorHandling.h Reformat headers in ADT and Support partially. 2015-08-10 04:22:36 +00:00
ErrorOr.h Use std::forward to make ErrorOr<T> constructible from a value that has a user-defined conversion to T. No functionality change intended. 2016-02-09 04:47:58 +00:00
FileOutputBuffer.h Return ErrorOr from FileOutputBuffer::create. NFC. 2015-08-13 00:31:39 +00:00
FileSystem.h NFC: Update documentation for createUniqueFile() to explain that models without an absolute path will be created in the current directory. 2015-11-06 01:45:30 +00:00
FileUtilities.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Format.h [Support] Fix the examples and assertion for format_hex_no_prefix to take into account that there are no prefix characters to include in Width. 2016-02-08 01:02:55 +00:00
FormattedStream.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
GCOV.h Rename one of our two llvm::GCOVOptions classes to llvm::GCOV::Options. We used 2015-10-14 00:04:19 +00:00
GenericDomTree.h [DominatorTree] Remove unnecessary map population. NFC. 2016-01-07 19:21:29 +00:00
GenericDomTreeConstruction.h Reformat headers in ADT and Support partially. 2015-08-10 04:22:36 +00:00
GraphWriter.h Make the SelectionDAG graph printer use SDNode::PersistentId labels. 2015-10-27 23:09:03 +00:00
Host.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
JamCRC.h [MC] Add support for generating COFF CRCs 2015-09-01 21:23:58 +00:00
LEB128.h
LICENSE.TXT
LineIterator.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Locale.h
LockFileManager.h
MachO.h ARM: support .watchos_version_min and .tvos_version_min. 2015-10-28 22:36:05 +00:00
ManagedStatic.h Support: Clean up TSan annotations. 2015-08-18 22:31:24 +00:00
MathExtras.h Delete dead code. 2016-01-18 21:01:50 +00:00
MD5.h Fix comment for MD5Hash. 2016-02-09 13:28:44 +00:00
Memory.h Add a sys::OwningMemoryBlock class, which is a sys::MemoryBlock that owns its 2015-10-31 00:55:32 +00:00
MemoryBuffer.h Reorganize the C API headers to improve build times. 2015-12-18 01:46:52 +00:00
MemoryObject.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MipsABIFlags.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Mutex.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MutexGuard.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
OnDiskHashTable.h [PGO] Add support for reading multiple versions of indexed profile format profile data 2015-12-01 20:26:26 +00:00
Options.h Fix some comment typos. 2015-08-08 18:27:36 +00:00
Path.h Moving FileManager::removeDotPaths to llvm::sys::path::remove_dots 2015-11-09 18:56:31 +00:00
PluginLoader.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
PointerLikeTypeTraits.h Revert "Revert "[ptr-traits] Implement the base pointer traits using the actual"" 2015-12-30 23:37:25 +00:00
PrettyStackTrace.h Add functions to save and restore the PrettyStackTrace state. 2015-08-07 17:47:03 +00:00
Printable.h raw_ostream: << operator for callables with raw_ostream argument 2015-12-04 01:31:59 +00:00
Process.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Program.h Replace static const int with enum to fix obnoxious linker errors about a missing definition 2016-02-03 21:45:39 +00:00
RandomNumberGenerator.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
raw_os_ostream.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
raw_ostream.h Drop an unnecessary use of writev. 2015-12-16 22:59:06 +00:00
Recycler.h Support: Stop using iplist in Recycler 2015-10-07 20:49:09 +00:00
RecyclingAllocator.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Regex.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Registry.h Add support for importing and exporting Registry objects on Windows 2016-02-09 19:37:25 +00:00
RWMutex.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
SaveAndRestore.h
ScaledNumber.h Fix Clang-tidy readability-redundant-control-flow warnings; other minor fixes. 2016-02-02 18:20:45 +00:00
Signals.h Rename RunCallBacksToRun to llvm::sys::RunSignalHandlers 2015-07-22 21:11:17 +00:00
SMLoc.h Whitespace. 2015-08-10 04:22:09 +00:00
Solaris.h
SourceMgr.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
SpecialCaseList.h
StreamingMemoryObject.h Fix testing for end of stream in bitstream reader. 2015-08-03 18:01:50 +00:00
StringPool.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
StringSaver.h There is only one saver of strings. 2015-08-13 01:07:02 +00:00
SwapByteOrder.h Fix getSwappedBytes for double. 2015-05-19 08:44:15 +00:00
SystemUtils.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
TargetParser.h [ARM] Add ARMv8.2-A to TargetParser 2015-12-01 10:33:56 +00:00
TargetRegistry.h [MC, COFF] Support link /incremental conditionally 2015-12-21 22:09:27 +00:00
TargetSelect.h Whitespace. 2015-08-10 04:22:09 +00:00
thread.h Add a C++11 ThreadPool implementation in LLVM 2015-12-15 00:59:19 +00:00
Threading.h Whitespace. 2015-08-10 04:22:09 +00:00
ThreadLocal.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
ThreadPool.h Wrap include of <future> in some warning suppression pragmas 2015-12-15 22:10:30 +00:00
Timer.h [Support] Allow multiple paired calls to {start,stop}Timer() 2015-12-22 17:36:17 +00:00
TimeValue.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
ToolOutputFile.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
TrailingObjects.h Remove TrailingObjects::operator delete. It's still suffering from 2016-02-09 02:09:16 +00:00
type_traits.h Add a TrailingObjects template class. 2015-08-05 22:57:34 +00:00
Unicode.h
UnicodeCharRanges.h [Support] Add comment to explain why we can't drop NDEBUG. 2015-10-24 22:15:32 +00:00
UniqueLock.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Valgrind.h Support: Clean up TSan annotations. 2015-08-18 22:31:24 +00:00
Watchdog.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
Win64EH.h
WindowsError.h
YAMLParser.h Add != to YAMLParser's basic_collection_iterator. 2016-01-06 05:17:12 +00:00
YAMLTraits.h Fix Clang-tidy modernize-use-nullptr warnings in examples and include directories; other minor cleanups. 2015-09-29 18:02:48 +00:00