Derek Schuff cdb105b62f [MC] Attach labels to existing fragments instead of using a separate fragment ... Summary: Currently when emitting a label, a new data fragment is created for it if the current fragment isn't a data fragment. This change instead enqueues the label and attaches it to the next fragment (e.g. created for the next instruction) if possible. When bundle alignment is not enabled, this has no functionality change (it just results in fewer extra fragments being created). For bundle alignment, previously labels would point to the beginning of the bundle padding instead of the beginning of the emitted instruction. This was not only less efficient (e.g. jumping to the nops instead of past them) but also led to miscalculation of the address of the GOT (since MC uses a label difference rather than emitting a "." symbol). Fixes https://code.google.com/p/nativeclient/issues/detail?id=3982 Test Plan: regression test attached Reviewers: jvoung, eliben Subscribers: jfb, llvm-commits Differential Revision: http://reviews.llvm.org/D5915 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220439 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-22 22:38:06 +00:00
..
MCParser	[mips] Print warning when using register names not available in N32/64	2014-10-03 15:37:37 +00:00
ConstantPools.h	[Modules] Add some missing includes to make files compile stand-alone.	2014-10-12 22:49:26 +00:00
MachineLocation.h
MCAsmBackend.h	ARMAsmBackend uses a factory method to generate binary file format specific	2014-09-16 09:18:23 +00:00
MCAsmInfo.h	Drop support for an old version of ld64 (from darwin 9).	2014-10-21 18:31:09 +00:00
MCAsmInfoCOFF.h
MCAsmInfoDarwin.h
MCAsmInfoELF.h	Move getNonexecutableStackSection up to the base ELF class.	2014-10-15 15:44:16 +00:00
MCAsmLayout.h
MCAssembler.h	[MC] Make bundle alignment mode setting idempotent and support nested bundles	2014-10-15 17:10:04 +00:00
MCCodeEmitter.h
MCCodeGenInfo.h
MCContext.h	Add back commits r219835 and a fixed version of r219829.	2014-10-17 01:48:58 +00:00
MCDirectives.h
MCDisassembler.h
MCDwarf.h	[asan-asm-instrumentation] CFI directives are generated for .S files.	2014-10-07 11:03:09 +00:00
MCELF.h	[MC] Constify MCELF::GetVisibility and MCELF::getOther	2014-07-11 17:34:44 +00:00
MCELFObjectWriter.h	[MC] Pass MCSymbolData to needsRelocateWithSymbol	2014-07-20 23:15:06 +00:00
MCELFStreamer.h	Simplify handling of --noexecstack by using getNonexecutableStackSection.	2014-10-15 16:12:52 +00:00
MCELFSymbolFlags.h	ARM: take care not to set the ThumbFunc bit on TLS data symbols	2014-06-30 09:37:24 +00:00
MCExpr.h	MC: Shrink MCSymbolRefExpr by only storing the bits we need.	2014-10-11 17:57:27 +00:00
MCExternalSymbolizer.h
MCFixedLenDisassembler.h
MCFixup.h
MCFixupKindInfo.h
MCInst.h
MCInstBuilder.h
MCInstPrinter.h	Fixing missing C++ mode comment	2014-09-29 15:55:18 +00:00
MCInstrAnalysis.h
MCInstrDesc.h	Add isInsertSubreg property.	2014-08-20 23:49:36 +00:00
MCInstrInfo.h
MCInstrItineraries.h	don't repeat function name in comments	2014-10-07 17:28:04 +00:00
MCLabel.h
MCLinkerOptimizationHint.h	Make isValidMCLOHType take unsigned instead of enum to avoid loading invalid enum values	2014-08-29 22:34:28 +00:00
MCMachObjectWriter.h	MachObjectWriter: optimize the string table for common suffices	2014-10-06 17:05:19 +00:00
MCMachOSymbolFlags.h
MCObjectFileInfo.h	Canonicalize header guards into a common format.	2014-08-13 16:26:38 +00:00
MCObjectStreamer.h	[MC] Attach labels to existing fragments instead of using a separate fragment	2014-10-22 22:38:06 +00:00
MCObjectWriter.h
MCRegisterInfo.h
MCRelocationInfo.h
MCSchedule.h	typos	2014-10-07 17:00:16 +00:00
MCSection.h
MCSectionCOFF.h	CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF	2014-07-14 22:57:27 +00:00
MCSectionELF.h
MCSectionMachO.h
MCStreamer.h	[AArch64] Add support for the .inst directive.	2014-10-22 20:35:57 +00:00
MCSubtargetInfo.h	Change MCSchedModel to be a struct of statically initialized data.	2014-09-02 17:43:54 +00:00
MCSymbol.h
MCSymbolizer.h
MCTargetAsmParser.h	ms-inline-asm: Fix parsing label names inside bracket expressions	2014-09-22 20:40:36 +00:00
MCTargetOptions.h	Convert MC command line option for fatal assembler warnings into a	2014-08-26 18:39:50 +00:00
MCTargetOptionsCommandFlags.h	Add ability to emit internal instruction representation to CodeGen assembly output.	2014-07-09 10:07:36 +00:00
MCValue.h
MCWin64EH.h	MC: split Win64EHUnwindEmitter into a shared streamer	2014-08-07 02:59:41 +00:00
MCWinCOFFObjectWriter.h
MCWinCOFFStreamer.h	Simplify handling of --noexecstack by using getNonexecutableStackSection.	2014-10-15 16:12:52 +00:00
MCWinEH.h	MC Win64: Put unwind info for COMDAT code into the same COMDAT group	2014-09-04 17:42:03 +00:00
SectionKind.h
StringTableBuilder.h	MachObjectWriter: optimize the string table for common suffices	2014-10-06 17:05:19 +00:00
SubtargetFeature.h	Fix some cases where StringRef was being passed by const reference. Remove const from some other StringRefs since its implicitly const already.	2014-08-30 16:48:02 +00:00
YAML.h	Invert the MC -> Object dependency.	2014-07-03 02:01:39 +00:00