Ali Tamur c283818217 [llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt ... Another attempt to land the changes in debug line header to prevent duplicate files in Dwarf 5. I rolled back my previous commit because of a mistake in generating the object file in a test. Meanwhile, I addressed some offline comments and changed the implementation; the largest difference is that MCDwarfLineTableHeader does not keep DwarfVersion but gets it as a parameter. I also merged the patch to fix two lld tests that will strt to fail into this patch. Original Commit: https://reviews.llvm.org/D59515 Original Message: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. llvm-svn: 358732		2019-04-19 02:26:56 +00:00
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MCDisassembler	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCParser	Remove ASan asm instrumentation.	2019-03-11 21:50:10 +00:00
ConstantPools.h	Fix misspelled filenames in file headers of llvm/{MC,Object,CodeGen}/*.h	2019-02-06 08:02:46 +00:00
LaneBitmask.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MachineLocation.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAsmBackend.h	[RISCV] Insert R_RISCV_ALIGN relocation type and Nops for code alignment when linker relaxation enabled	2019-01-30 11:16:59 +00:00
MCAsmInfo.h	Move addInitialFrameState out of line and remove the MCDwarf.h include.	2019-04-12 06:57:45 +00:00
MCAsmInfoCOFF.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAsmInfoDarwin.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAsmInfoELF.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAsmInfoWasm.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAsmLayout.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAsmMacro.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCAssembler.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCCodeEmitter.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCCodePadder.h	Fix misspelled filenames in file headers of llvm/{MC,Object,CodeGen}/*.h	2019-02-06 08:02:46 +00:00
MCCodeView.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCContext.h	NFC: Move API uses of MD5::MD5Result to Optional rather than a pointer.	2019-04-04 23:34:38 +00:00
MCDirectives.h	[MC] Teach the MachO object writer about N_FUNC_COLD	2019-01-25 18:30:22 +00:00
MCDwarf.h	[llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt	2019-04-19 02:26:56 +00:00
MCELFObjectWriter.h	MC/ELF: Allow targets to set ABI version	2019-02-14 22:42:09 +00:00
MCELFStreamer.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCExpr.h	[WebAssembly] Add new explicit relocation types for PIC relocations	2019-04-04 17:43:50 +00:00
MCFixedLenDisassembler.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCFixup.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCFixupKindInfo.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCFragment.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCInst.h	Replace llvm::isPodLike<...> by llvm::is_trivially_copyable<...>	2019-01-20 21:19:56 +00:00
MCInstBuilder.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCInstPrinter.h	[llvm-objdump] Implement -Mreg-names-raw/-std options.	2019-02-26 12:15:14 +00:00
MCInstrAnalysis.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCInstrDesc.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCInstrInfo.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCInstrItineraries.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCLabel.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCLinkerOptimizationHint.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCMachObjectWriter.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCObjectFileInfo.h	[Remarks] Emit a section containing remark diagnostics metadata	2019-03-27 01:13:59 +00:00
MCObjectStreamer.h	[AsmPrinter] Remove hidden flag -print-schedule.	2019-02-04 12:51:26 +00:00
MCObjectWriter.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCRegisterInfo.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCSchedule.h	[MC][X86] Correctly model additional operand latency caused by transfer delays from the integer to the floating point unit.	2019-01-23 16:35:07 +00:00
MCSection.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCSectionCOFF.h	[MC] Clean up unused inline function and non-anchor defaulted destructors; NFCI	2019-02-09 02:11:51 +00:00
MCSectionELF.h	[MC] Clean up unused inline function and non-anchor defaulted destructors; NFCI	2019-02-09 02:11:51 +00:00
MCSectionMachO.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCSectionWasm.h	[WebAssembly] Update MC for bulk memory	2019-02-19 22:56:19 +00:00
MCStreamer.h	Move getNumFrameInfos and getDwarfFrameInfos out of line and remove	2019-04-12 07:42:35 +00:00
MCSubtargetInfo.h	[Subtarget] Merge ProcSched and ProcDesc arrays in MCSubtargetInfo into a single array.	2019-03-05 18:54:38 +00:00
MCSymbol.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCSymbolCOFF.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCSymbolELF.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCSymbolMachO.h	[MC] Teach the MachO object writer about N_FUNC_COLD	2019-01-25 18:30:22 +00:00
MCSymbolWasm.h	[WebAssembly] Initial implementation of PIC code generation	2019-03-26 19:46:15 +00:00
MCTargetOptions.h	Fix some MCTargetOptions Doxygen comments (NFC)	2019-04-04 20:35:57 +00:00
MCTargetOptionsCommandFlags.inc	Remove ASan asm instrumentation.	2019-03-11 21:50:10 +00:00
MCValue.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCWasmObjectWriter.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCWasmStreamer.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCWin64EH.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCWinCOFFObjectWriter.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCWinCOFFStreamer.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MCWinEH.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
SectionKind.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
StringTableBuilder.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
SubtargetFeature.h	Use bitset for assembler predicates	2019-03-11 17:04:35 +00:00