7c969558d9
MC: Direct all {fragment,section,symbol} address access through the MCAsmLayout object.
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llvm-svn: 99380
2010-03-24 03:43:40 +00:00
5376c2a431
MC: Sprinkle in some more interesting statistics.
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llvm-svn: 99350
2010-03-23 23:47:14 +00:00
5cfb58719d
llvm-mc: Fast path EvaluateAbsolute of constants.
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llvm-svn: 99348
2010-03-23 23:47:07 +00:00
de04b3f62c
MC: Switch to using MCInst fragments to do relaxation.
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Also, both MCMachOStreamer and MCAssembler are now target independent!
llvm-svn: 99256
2010-03-23 05:09:03 +00:00
86face8333
MC: Add TargetAsmBackend::MayNeedRelaxation, for checking whether a particular instruction + fixups might need relaxation.
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llvm-svn: 99249
2010-03-23 03:13:05 +00:00
a9ae3ae698
MC: Add TargetAsmBackend::WriteNopData and use to eliminate some target dependencies in MCMachOStreamer and MCAssembler.
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llvm-svn: 99248
2010-03-23 02:36:58 +00:00
16cbe95dd6
MC: Tweak MCInstFragment to include the encoded data and fixups, so that we don't need to recompute them during relaxation. I will revisit this once all the other pieces of fast relaxation are in place.
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llvm-svn: 99244
2010-03-23 01:39:05 +00:00
a99d232803
Put MCSectionCOFF::Name into the MCContext instead of leaking it.
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llvm-svn: 99231
2010-03-22 23:26:12 +00:00
b31c49a70d
MC: Add MCInstFragment, not used yet.
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llvm-svn: 99229
2010-03-22 23:16:48 +00:00
a75f01a905
Add a FIXME.
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llvm-svn: 99228
2010-03-22 23:16:43 +00:00
fdc7ccc4e4
MC: Fix a few more cases we were passing an MCDataFragment when a MCFragment would do, and sprinkle in some const.
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llvm-svn: 99218
2010-03-22 21:49:41 +00:00
20ea02fde2
Simplify.
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llvm-svn: 99217
2010-03-22 21:49:38 +00:00
04047fbe14
MCInst: Add ::dump_pretty.
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llvm-svn: 99216
2010-03-22 21:49:34 +00:00
a0ab4bf989
MC: Change MCObjectWriter::RecordRelocation to take an MCFragment (instead of a MCDataFragment). Object files should only need the generic MCFragment features.
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llvm-svn: 99205
2010-03-22 20:35:50 +00:00
f1f1827bfa
MC/Mach-O: Factor out getOrCreateDataFragment().
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llvm-svn: 99204
2010-03-22 20:35:46 +00:00
9213355a91
MC: Eliminate MCFragment::getMaxFileSize.
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llvm-svn: 99203
2010-03-22 20:35:43 +00:00
32ffc58ca9
MC: Share the MCAsmLayout object, although its still not used for anything important.
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llvm-svn: 99202
2010-03-22 20:35:35 +00:00
5ea5fab22b
Better fix for r98994, MachObjectWriterImpl wasn't intended to be virtual.
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llvm-svn: 99031
2010-03-20 01:58:40 +00:00
07b4f8cd4b
Fix -Wnon-virtual-dtor warning.
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llvm-svn: 98994
2010-03-19 21:26:46 +00:00
1a81ad3559
MC/Mach-O/x86_64: Add relocation support.
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- This is "extraordinarily" Darwin 'as' compatible. See the litany of FIXMEs littered about for more information.
- There are a few cases which seem to clearly be 'as' bugs which I have left unsupported, and there is one cases where we diverge but should fix if it blocks diffing .o files (Darwin 'as' ends up widening a jump unnecessarily).
- 403.gcc build, runs, and diffs equivalently to the 'as' built version now (using llvm-mc). However, it builds so slowly that I wouldn't recommend trying it quite yet. :)
llvm-svn: 98974
2010-03-19 18:07:55 +00:00
4d7c8645fd
MC: Add TargetAsmBackend::createObjectWriter.
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- MCAssembler is now object-file independent, although we will surely need more work to fully support ELF/COFF.
llvm-svn: 98955
2010-03-19 10:43:26 +00:00
eaa367f5ae
MCCodeEmitter: Add target independent fixup flag for is-pc-relative.
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llvm-svn: 98954
2010-03-19 10:43:23 +00:00
1bd7171c95
MC: Sink code emitter into MCAssembler.
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llvm-svn: 98953
2010-03-19 10:43:18 +00:00
79e0e5a631
MC/Mach-O: Move to MachObjectWriter.{h,cpp}.
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llvm-svn: 98952
2010-03-19 10:43:15 +00:00
c5084cccc8
MC: Add TargetAsmBackend::isVirtualSection hook.
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llvm-svn: 98950
2010-03-19 09:29:03 +00:00
f027abf7de
MC: Split MCObjectWriter out of MCAssembler.cpp.
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llvm-svn: 98949
2010-03-19 09:28:59 +00:00
49e5a8ac2a
MCAssembler: Pull out MCObjectWriter class.
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llvm-svn: 98948
2010-03-19 09:28:55 +00:00
f0517efc6c
MCAssembler: Move ApplyFixup to the TargetAsmBackend, this is a target specific not object writer specific task.
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llvm-svn: 98947
2010-03-19 09:28:12 +00:00
3cab275783
MC/Mach-O: Lift the fixup evaluation and application up (to the same place), and eliminate MCAsmFixup::FixedValue.
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llvm-svn: 98944
2010-03-19 07:09:47 +00:00
d84d196a86
MC/Mach-O: Factor out ExecutePostLayoutBinding, to separate the post-layout changes the object writer may need to make to the assembler from the actual .o writing.
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llvm-svn: 98943
2010-03-19 07:09:33 +00:00
563d40eda6
MC/Mach-O: Lift relocation emission logic a bit higher to separate evaluation / relocation handling from the actual .o writing.
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llvm-svn: 98942
2010-03-19 07:09:18 +00:00
90a7859ebc
fix an MCInstPrinter leak that jyasskin pointed out:
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createAsmStreamer now takes ownership of the instprinter.
llvm-svn: 98939
2010-03-19 05:48:53 +00:00
0f7fbb3d00
MC/Mach-O: Add isScatteredFixupFullyResolved, which implements the correct algorithm (used on x86_64) for determining whether an evaluated fixup is fully resolved (doesn't need relocation).
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- Test cases will follow, once we have x86_64 relocation support.
llvm-svn: 98926
2010-03-19 03:18:18 +00:00
6e13bb07fb
MC/Mach-O/x86_64: Add getAtom[ForAddress].
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- These find the defining symbol which identifies the containing atom for a symbol or address. They are currently very slow, but will be eliminated eventually.
llvm-svn: 98925
2010-03-19 03:18:15 +00:00
5ec4bdd1b3
MC/Mach-O: Factor out isScatteredFixupFullyResolvedSimple predicate, and fix some corner cases.
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llvm-svn: 98924
2010-03-19 03:18:12 +00:00
c558ec211f
MC/Mach-O: Factor out isSymbolLinkerVisible method; "linker visible" is a made up term to refer to non-temporary labels + temporary labels in sections-which-require symbols. For Darwin, it corresponds to symbols which effectively define an atom.
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llvm-svn: 98923
2010-03-19 03:18:09 +00:00
9c64ec0a7e
MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers.
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llvm-svn: 98791
2010-03-18 00:59:10 +00:00
6544baff6f
MC/Darwin: Add a new target hook for whether the target uses "reliable" symbol differences, basically whether the assembler should attempt to understand atoms when using scattered symbols.
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Also, avoid some virtual call overhead.
llvm-svn: 98789
2010-03-18 00:58:53 +00:00
aed00fa039
fix GetOrCreateTemporarySymbol to require a name, clients
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should use CreateTempSymbol() if they don't care about the
name.
llvm-svn: 98712
2010-03-17 05:41:18 +00:00
5599256415
MC: Allow modifiers in MCSymbolRefExpr, and eliminate X86MCTargetExpr.
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- Although it would be nice to allow this decoupling, the assembler needs to be able to reason about MCSymbolRefExprs in too many places to make this viable. We can use a target specific encoding of the variant if this becomes an issue.
- This patch also extends llvm-mc to support parsing of the modifiers, as opposed to lumping them in with the symbol.
llvm-svn: 98592
2010-03-15 23:51:06 +00:00
fe8d866fc7
MC/Mach-O/x86_64: Temporary labels in cstring sections require symbols (and external relocations, but we don't have x86_64 relocations yet).
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llvm-svn: 98583
2010-03-15 21:56:50 +00:00
232dc953ac
MC/Mach-O: Add MCSectionMachO::getType()
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llvm-svn: 98582
2010-03-15 21:56:38 +00:00
133487696a
fix a memory leak yjasskin pointed out: MCSymbol is bump pointer
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allocated and thus not freed. This is cool except that it contains
and std::string so the string data didn't get freed. In any case
there is no reason to redundantly store the string data in the
MCSymbol anyway, just make the MCSymbol ref the string data in the
MCContext StringMap.
llvm-svn: 98536
2010-03-15 06:15:35 +00:00
073d817958
add a new CreateTempSymbol method, the use case for
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CreateTempSymbol vs GetOrCreateTemporarySymbol are
completely different.
llvm-svn: 98486
2010-03-14 08:23:30 +00:00
aa8f95eb56
MC: Fix a crash on invalid, attempting to evaluate undefined symbols.
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llvm-svn: 98464
2010-03-14 03:10:40 +00:00
7c1f3d8cad
MC/X86_64: Symbol support.
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llvm-svn: 98456
2010-03-13 22:49:35 +00:00
56597588f0
MC/Mach-O: Initial x86_64 support.
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llvm-svn: 98454
2010-03-13 22:10:17 +00:00
341b1d25f1
add a hack to allow parsing negative minint. rdar://7751341
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llvm-svn: 98442
2010-03-13 19:25:13 +00:00
34b8e553ea
MC/Mach-O: PCrel relocations weren't using the right base address, they are
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relative to the fragment address, not its offset. This was masked by the text
section normally being at address 0.
llvm-svn: 98420
2010-03-13 02:38:00 +00:00
322fec671b
llvm-mc: Support -n, useful for comparing -integrated-as output since the
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compiler may not lead with the text section.
llvm-svn: 98418
2010-03-13 02:20:57 +00:00
Daniel Dunbar