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* ARM: support .watchos_version_min and .tvos_version_min.Tim Northover2015-10-281-2/+16
| | | | | | | | These MachO file directives are used by linkers and other tools to provide compatibility information, much like the existing .ios_version_min and .macosx_version_min. llvm-svn: 251569
* Add a RAW mode to StringTableBuilder.Rafael Espindola2015-10-231-1/+1
| | | | | | | | | | | | In this mode it just tries to tail merge the strings without imposing any other format constrains. It will not, for example, add a null byte between them. Also add support for keeping a tentative size and offset if we decide to not optimize after all. This will be used shortly in lld for merging SHF_STRINGS sections. llvm-svn: 251153
* Fix pr24486.Rafael Espindola2015-10-051-0/+12
| | | | | | | | | | | | | | | | | | This extends the work done in r233995 so that now getFragment (in addition to getSection) also works for variable symbols. With that the existing logic to decide if a-b can be computed works even if a or b are variables. Given that, the expression evaluation can avoid expanding variables as aggressively and that in turn lets the relocation code see the original variable. In order for this to work with the asm streamer, there is now a dummy fragment per section. It is used to assign a section to a symbol when no other fragment exists. This patch is a joint work by Maxim Ostapenko andy myself. llvm-svn: 249303
* Untabify.NAKAMURA Takumi2015-09-221-3/+3
| | | | llvm-svn: 248264
* Reformat blank lines.NAKAMURA Takumi2015-09-221-2/+1
| | | | llvm-svn: 248263
* [MC] Allow MCObjectWriter's output stream to be swapped outDavid Majnemer2015-09-011-19/+20
| | | | | | | | | | | | | | | | | | There are occasions where it is useful to consider the entirety of the contents of a section. For example, compressed debug info needs the entire section available before it can compress it and write it out. The compressed debug info scenario was previously implemented by mirroring the implementation of writeSectionData in the ELFObjectWriter. Instead, allow the output stream to be swapped on demand. This lets callers redirect the output stream to a more convenient location before it hits the object file. No functionality change is intended. Differential Revision: http://reviews.llvm.org/D12509 llvm-svn: 246554
* [MC/MachO] Make some MachObjectWriter methods more generic. NFC.Frederic Riss2015-08-261-25/+30
| | | | | | | Hardcode less values in some mach-o header writing routines and pass them as argument. Doing so will allow reusing this code in llvm-dsymutil. llvm-svn: 246007
* Revert r240302 ("Bring r240130 back.").Daniel Jasper2015-06-231-2/+1
| | | | | | | | | | | | | This causes errors like: ld: error: blah.o: requires dynamic R_X86_64_PC32 reloc against '' which may overflow at runtime; recompile with -fPIC blah.cc:function f(): error: undefined reference to '' blah.o:g(): error: undefined reference to '' I have not yet come up with an appropriate reproduction. llvm-svn: 240394
* Bring r240130 back.Rafael Espindola2015-06-221-1/+2
| | | | | | | | | | | | | | | | | | | | | | Now that pr23900 is fixed, we can bring it back with no changes. Original message: Make all temporary symbols unnamed. What this does is make all symbols that would otherwise start with a .L (or L on MachO) unnamed. Some of these symbols still show up in the symbol table, but we can just make them unnamed. In order to make sure we produce identical results when going thought assembly, all .L (not just the compiler produced ones), are now unnamed. Running llc on llvm-as.opt.bc, the peak memory usage goes from 208.24MB to 205.57MB. llvm-svn: 240302
* Revert 240130, it caused crashes (repro in PR23900).Nico Weber2015-06-191-2/+1
| | | | llvm-svn: 240193
* Make all temporary symbols unnamed.Rafael Espindola2015-06-191-1/+2
| | | | | | | | | | | | | | | | What this does is make all symbols that would otherwise start with a .L (or L on MachO) unnamed. Some of these symbols still show up in the symbol table, but we can just make them unnamed. In order to make sure we produce identical results when going thought assembly, all .L (not just the compiler produced ones), are now unnamed. Running llc on llvm-as.opt.bc, the peak memory usage goes from 208.24MB to 205.57MB. llvm-svn: 240130
* Remove includes of MCMachOSymbolFlags.h after it was deletedPete Cooper2015-06-081-1/+0
| | | | llvm-svn: 239318
* Move all flags logic to MCSymbolMachO.Pete Cooper2015-06-081-20/+4
| | | | | | | | | | | Also delete the now unused MCMachOSymbolFlags.h header as the only enum in there was moved to MCSymbolMachO. Similarly to ELF and COFF, manipulating the flags is now done via helpers instead of spread throughout the codebase. Reviewed by Rafael Espíndola. llvm-svn: 239316
* MC: Clean up the naming for MCMachObjectWriter. NFC.Jim Grosbach2015-06-041-24/+24
| | | | | | | | | | | | | | | | | | s/ExecutePostLayoutBinding/executePostLayoutBinding/ s/ComputeSymbolTable/computeSymbolTable/ s/BindIndirectSymbols/bindIndirectSymbols/ s/RecordTLVPRelocation/recordTLVPRelocation/ s/RecordScatteredRelocation/recordScatteredRelocation/ s/WriteLinkerOptionsLoadCommand/writeLinkerOptionsLoadCommand/ s/WriteLinkeditLoadCommand/writeLinkeditLoadCommand/ s/WriteNlist/writeNlist/ s/WriteDysymtabLoadCommand/writeDysymtabLoadCommand/ s/WriteSymtabLoadCommand/writeSymtabLoadCommand/ s/WriteSection/writeSection/ s/WriteSegmentLoadCommand/writeSegmentLoadCommand/ s/WriteHeader/writeHeader/ llvm-svn: 239119
* MC: Clean up naming in MCObjectWriter. NFC.Jim Grosbach2015-06-041-94/+94
| | | | | | | | | | | | | | | | | | | | s/WriteObject/writeObject/ s/RecordRelocation/recordRelocation/ s/IsSymbolRefDifferenceFullyResolved/isSymbolRefDifferenceFullyResolved/ s/Write8/write8/ s/WriteLE16/writeLE16/ s/WriteLE32/writeLE32/ s/WriteLE64/writeLE64/ s/WriteBE16/writeBE16/ s/WriteBE32/writeBE32/ s/WriteBE64/writeBE64/ s/Write16/write16/ s/Write32/write32/ s/Write64/write64/ s/WriteZeroes/writeZeroes/ s/WriteBytes/writeBytes/ llvm-svn: 239108
* [MachOWriter] Use for-range and roll some duplicated code into loops.Benjamin Kramer2015-06-041-43/+25
| | | | | | No functionality change intended. llvm-svn: 239096
* MC: Remove obsolete MachO UseAggressiveSymbolFolding.Jim Grosbach2015-06-041-3/+0
| | | | | | | | | | Fix the FIXME and remove this old as(1) compat option. It was useful for bringup of the integrated assembler to diff object files, but now it's just causing more relocations than strictly necessary to be generated. rdar://21201804 llvm-svn: 239084
* MC: Tidy up LOH naming a bit. NFC.Jim Grosbach2015-06-011-1/+1
| | | | llvm-svn: 238800
* Store a bit in MCSection saying if it was registered with MCAssembler.Rafael Espindola2015-06-011-15/+9
| | | | | | With this we can replace a SetVector with a plain std::vector. llvm-svn: 238706
* MC: Clean up MCExpr naming. NFC.Jim Grosbach2015-05-301-1/+1
| | | | llvm-svn: 238634
* Remove getData.Rafael Espindola2015-05-291-12/+7
| | | | | | This completes the mechanical part of merging MCSymbol and MCSymbolData. llvm-svn: 238617
* Remove the MCSymbolData typedef.Rafael Espindola2015-05-291-3/+3
| | | | | | The getData member function is next. llvm-svn: 238611
* Rename getOrCreateSymbolData to registerSymbol and return void.Rafael Espindola2015-05-291-2/+2
| | | | | | Another step in merging MCSymbol and MCSymbolData. llvm-svn: 238607
* Move Flags from MCSymbolData to MCSymbol.Rafael Espindola2015-05-291-4/+4
| | | | llvm-svn: 238598
* Move common symbol related information from MCSectionData to MCSymbol.Rafael Espindola2015-05-291-3/+3
| | | | llvm-svn: 238583
* Remove a trivial forwarding function. NFC.Rafael Espindola2015-05-281-4/+3
| | | | llvm-svn: 238506
* Remove uses of MCSectionData from MachObjectWriter.cpp.Rafael Espindola2015-05-271-6/+4
| | | | llvm-svn: 238327
* Remove most uses of MCSectionData from MCAssembler.Rafael Espindola2015-05-261-14/+9
| | | | llvm-svn: 238172
* Stop using MCSectionData in MCAsmLayout.h.Rafael Espindola2015-05-261-18/+17
| | | | llvm-svn: 238170
* Stop using MCSectionData in MCMachObjectWriter.h.Rafael Espindola2015-05-261-19/+19
| | | | llvm-svn: 238165
* Stop using MCSectionData in MCExpr.h.Rafael Espindola2015-05-261-9/+9
| | | | llvm-svn: 238163
* Return a MCSection from MCFragment::getParent().Rafael Espindola2015-05-261-4/+5
| | | | | | Another step in merging MCSectionData and MCSection. llvm-svn: 238162
* Turn MCSectionData into a field of MCSection.Rafael Espindola2015-05-251-9/+12
| | | | | | | This also changes MCAssembler to store a vector of MCSections instead of an iplist of MCSectionData. llvm-svn: 238159
* Move HasInstructions to MCSection.Rafael Espindola2015-05-251-1/+1
| | | | llvm-svn: 238150
* Move LayoutOrder to MCSection.Rafael Espindola2015-05-251-1/+1
| | | | llvm-svn: 238141
* MC: Lift MCSymbolData::Index up to MCSymbol::Index, NFCDuncan P. N. Exon Smith2015-05-221-5/+5
| | | | | | | Lift `MCSymbolData::Index` up a level to `MCSymbol`, as preparation for packing it into the bitfield in `MCSymbol`. llvm-svn: 238001
* Stop forwarding (get|set)Aligment from MCSectionData to MCSection.Rafael Espindola2015-05-211-6/+7
| | | | llvm-svn: 237956
* MC: Remove last use of MCSymbolData::getSymbol(), NFCDuncan P. N. Exon Smith2015-05-211-3/+3
| | | | | | | | | | | | | | Remove the last use of `MCSymbolData::getSymbol()`. There's some *really* hairy stuff going on in `MachObjectWriter::WriteNList()` that I want to come back to. In particular, it updates `Symbol` to point at its aliasee (if any), but leaves `Data` behind, and it's not clear whether everything makes sense there. For now I've left the logic unchanged by adding `OrigSymbol` and moving the FIXME from r237750 up a bit higher. I've filed PR23598 to track looking into this. llvm-svn: 237867
* MC: Use MCSymbol in MachObjectWriter, NFCDuncan P. N. Exon Smith2015-05-201-16/+14
| | | | | | | Replace uses of `MCSymbolData` with `MCSymbol` where both are needed, so we can remove the backpointer. llvm-svn: 237799
* MC: Take MCSymbol in MachObjectWriter::getSymbolAddress(), NFCDuncan P. N. Exon Smith2015-05-201-15/+9
| | | | | | | Pass through an `MCSymbol` instead of an `MCSymbolData` so we can get rid of the back pointer. llvm-svn: 237750
* MC: Use MCSymbol in MCAsmLayout::getSymbolOffset(), NFCDuncan P. N. Exon Smith2015-05-191-1/+1
| | | | | | | Continue to canonicalize on MCSymbol instead of MCSymbolData when both are needed. llvm-svn: 237749
* MC: Use MCSymbol in RelAndSymbol, NFCDuncan P. N. Exon Smith2015-05-161-1/+1
| | | | | | Switch from `MCSymbolData` to `MCSymbol`. llvm-svn: 237502
* MC: Use MCSymbol in MCObject::IsSymbolRefDifferenceFullyResolvedImpl()Duncan P. N. Exon Smith2015-05-161-2/+2
| | | | | | | | Transition one API from `MCSymbolData` to `MCSymbol`. The function needs both, and the backpointer from `MCSymbolData` to `MCSymbol` is going away. llvm-svn: 237498
* MC: Change MCFragment::Atom to an MCSymbol, NFCDuncan P. N. Exon Smith2015-05-161-6/+1
| | | | | | | Change `MCFragment::Atom` from an `MCSymbolData` to an `MCSymbol`, moving in the direction of removing the back-pointer. llvm-svn: 237497
* MC: Change MCAssembler::Symbols to store MCSymbol, NFCDuncan P. N. Exon Smith2015-05-161-6/+5
| | | | | | | | Instead of storing a list of the `MCSymbolData` in use, store the `MCSymbol`s. Churning in the direction of removing the back pointer from `MCSymbolData`. llvm-svn: 237496
* MC: Avoid some UB caused by left shifting a negative value. NFCJustin Bogner2015-05-141-1/+1
| | | | llvm-svn: 237408
* Compute A-B when A or B is weak.Rafael Espindola2015-04-171-7/+3
| | | | | | | | | | | | | | | | | | | | Similar to r235222, but for the weak symbol case. In an "ideal" assembler/object format an expression would always refer to the final value and A-B would only be computed from a section in the same comdat as A and B with A and B strong. Unfortunately that is not the case with debug info on ELF, so we need an heuristic. Since we need an heuristic, we may as well use the same one as gas: * call weak_sym : produces a relocation, even if in the same section. * A - weak_sym and weak_sym -A: don't produce a relocation if we can compute it. This fixes pr23272 and changes the fix of pr22815 to match what gas does. llvm-svn: 235227
* Move AliasedSymbol to MachObjectWriter.Rafael Espindola2015-04-171-2/+14
| | | | | | | It was only used by MachO. Part of pr19627. llvm-svn: 235185
* [mc] Clean up emission of byte sequencesBenjamin Kramer2015-04-171-2/+1
| | | | | | No functional change intended. llvm-svn: 235178
* Use raw_pwrite_stream in the object writer/streamer.Rafael Espindola2015-04-141-1/+1
| | | | | | The ELF object writer will take advantage of that in the next commit. llvm-svn: 234950
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