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1010 Commits

Author SHA1 Message Date
Daniel Dunbar 7f2bb4dcae MC/Mach-O/ARM: Start handling some Thumb branches. 
llvm-svn: 122547
 2010-12-24 16:41:46 +00:00
Kevin Enderby fa3c6f148c In llvm-mc parse a Hash token as a full line comment. Allows handling of 
preprocessed .s files and matches darwin gas.  rdar://8798690
Also fix a comment on the next line of AsmParser.cpp after this new code.

llvm-svn: 122531
 2010-12-24 00:12:02 +00:00
Rafael Espindola 4124ab1255 Add r122359 back now that the bug in MCDwarfLineAddrFragment fragment has been 
fixed.

llvm-svn: 122448
 2010-12-22 22:16:24 +00:00
Rafael Espindola d91e11932c Assert that the AddrDelta expression is really constant and wrap it in a set 
if we have a lame assembler.

llvm-svn: 122446
 2010-12-22 22:04:28 +00:00
Rafael Espindola a6cd2d821a Rename NeedsSetToChangeDiffSize to HasAggressiveSymbolFolding which is a much 
better name and matches what is used in the MachO writer.

llvm-svn: 122443
 2010-12-22 21:51:29 +00:00
Daniel Dunbar ac8173cf71 MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups. 
llvm-svn: 122441
 2010-12-22 21:26:43 +00:00
Rafael Espindola 0e14b61c0b Revert r122359 while I debug PR8845. 
llvm-svn: 122427
 2010-12-22 19:05:49 +00:00
Matt Beaumont-Gay 6b5d2519b3 Fix another conditional expression mismatched enum type warning. 
llvm-svn: 122419
 2010-12-22 18:25:55 +00:00
Daniel Dunbar 45140d2efc MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is 
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.

llvm-svn: 122412
 2010-12-22 16:52:19 +00:00
Daniel Dunbar 11617c8666 MC/Mach-O/ARM: Clone off an ARM version of RecordScatteredRelocation until I figure out how it is supposed to work. 
llvm-svn: 122410
 2010-12-22 16:45:29 +00:00
Daniel Dunbar dde72ef0c1 MC/Mach-O: Return to reporting errors if we see unexpected fixup kinds. 
llvm-svn: 122409
 2010-12-22 16:32:41 +00:00
Daniel Dunbar a191cfd97e MC/Mach-O/ARM: Recognize generic _Data_N fixup kinds. 
llvm-svn: 122408
 2010-12-22 16:32:37 +00:00
Daniel Dunbar 9ccf843a61 MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations. 
llvm-svn: 122407
 2010-12-22 16:19:24 +00:00
Daniel Dunbar 56f13732e2 MC/Mach-O/ARM: Fix thinko. 
llvm-svn: 122406
 2010-12-22 16:19:20 +00:00
Rafael Espindola 50ce2f06de Use references and simplify. 
llvm-svn: 122405
 2010-12-22 16:11:57 +00:00
Rafael Espindola 73c0ae77ca Simplify the handling of .size expressions. 
llvm-svn: 122404
 2010-12-22 16:03:00 +00:00
Daniel Dunbar 083132e131 MC/Mach-O/ARM: Stub out RecordARMRelocation, which is mostly a copy of 
RecordRelocation with lots of FIXMEs.

llvm-svn: 122402
 2010-12-22 13:50:05 +00:00
Daniel Dunbar a63db77f2e Simplify. 
llvm-svn: 122401
 2010-12-22 13:49:56 +00:00
Daniel Dunbar 1e5be3653c MC/Mach-O: Split out RecordARMRelocation for now, it is weird enough it isn't 
clear how to keep in the generic path (yet).
 - Will revisit when it actually works.

llvm-svn: 122400
 2010-12-22 13:49:43 +00:00
Matt Beaumont-Gay 890cb2d506 GCC objects to the two sides of a conditional expression having different enum 
types, but they're just getting converted to unsigned anyway, so cast first
(and ask questions later).

llvm-svn: 122377
 2010-12-21 23:43:23 +00:00
Rafael Espindola a468ae02cb Simplify EvaluateAsAbsolute now that EvaluateAsRelocatableImpl does all 
the folding it can.

llvm-svn: 122359
 2010-12-21 20:51:42 +00:00
Rafael Espindola 6bdb49ded8 Don't relax org or align. They change size as the relaxation happens, but they 
are not actually relaxed. For example, a section with only alignments will never
needs relaxation.

llvm-svn: 122356
 2010-12-21 20:35:18 +00:00
Daniel Dunbar ff78eda678 MC/Mach-O: Shuffle enums a bit to make it harder to inadvertently use the wrong 
type.

llvm-svn: 122334
 2010-12-21 15:26:45 +00:00
Rafael Espindola 98d93c5294 Layout one section until no relaxations are done and then move to the next 
section.

This helps because in practice sections form a dag with debug sections pointing
to text sections. Finishing up the text sections first makes the debug section
relaxation trivial.

llvm-svn: 122314
 2010-12-21 04:22:09 +00:00
Roman Divacky 55184ddd35 Set the value of absolute symbols. 
llvm-svn: 122268
 2010-12-20 21:14:39 +00:00
Nick Lewycky 0de20af7ba Add missing standard headers. Patch by Joerg Sonnenberger! 
llvm-svn: 122193
 2010-12-19 20:43:38 +00:00
Rafael Espindola ee54636f0a Fixed version of 122160 (the previous one would fold undefined symbols). 
llvm-svn: 122167
 2010-12-19 04:18:56 +00:00
Rafael Espindola 9a2d4e04c7 Revert 122160 while I debug it. 
llvm-svn: 122165
 2010-12-19 03:22:05 +00:00
Rafael Espindola 6fd80a5593 Move all folding to AttemptToFoldSymbolOffsetDifference. 
llvm-svn: 122160
 2010-12-19 02:15:04 +00:00
Roman Divacky 71d29167ea Add support for lexing single quotes like 'c'. 
This fixed 8615.

llvm-svn: 122150
 2010-12-18 08:56:37 +00:00
Rafael Espindola b403e098a1 Merge isAbsolute into IsSymbolRefDifferenceFullyResolved. 
llvm-svn: 122148
 2010-12-18 06:27:54 +00:00
Rafael Espindola 8396dd0893 Remove the MCObjectFormat class. 
llvm-svn: 122147
 2010-12-18 05:37:28 +00:00
Rafael Espindola 293a7c1840 Add a FIXME and explain a hack. 
llvm-svn: 122144
 2010-12-18 04:19:20 +00:00
Rafael Espindola 1ea7f18caa Fix the note. 
llvm-svn: 122139
 2010-12-18 04:01:45 +00:00
Rafael Espindola 5004f4a9b5 Revert 122011, 122012, 122013, 122023 adding back an important optimization. 
I added a note, but suggestions on how to add a test are really welcome.

llvm-svn: 122138
 2010-12-18 03:57:21 +00:00
Rafael Espindola fdaae0d16f Move some data to the TargetWriter. 
llvm-svn: 122134
 2010-12-18 03:27:34 +00:00
Owen Anderson 79855298b9 Thumb's forced-PC-alignment requirement applies to the _total_ displacement, not just to the fragment relative 
portion.  While the fragment boundary is usually already aligned, it is possible for it not to be, which 
would lead to a non-aligned final displacement.

llvm-svn: 122091
 2010-12-17 21:49:48 +00:00
Rafael Espindola d11460a65b Store and free the TargetObjectWriter. 
llvm-svn: 122070
 2010-12-17 18:01:31 +00:00
Rafael Espindola 6b5e56c2b1 Stub out explicit MCELFObjectTargetWriter interface. 
llvm-svn: 122067
 2010-12-17 17:45:22 +00:00
Rafael Espindola f0e24d426a Move createELFObjectWriter to its own header. 
llvm-svn: 122064
 2010-12-17 16:59:53 +00:00
Rafael Espindola df63335844 Use getFixupKindInfo to implement isFixupKindPCRel, ELF version. 
llvm-svn: 122050
 2010-12-17 07:28:17 +00:00
Daniel Dunbar 137d422e50 MC/Expr: Implemnt more aggressive folding during symbol evaluation using 
IsSymbolRefDifferenceFullyResolved(). For example, we will now fold away
something like:
--
_a:
...
L0:
...
L1:
...
.long (L1 - L0) / 2
--

llvm-svn: 122043
 2010-12-17 05:50:33 +00:00
Daniel Dunbar 2ee6c9b8c9 MC/Mach-O: On second thought, use a custom hook for enabling aggressive 
IsSymbolRefDifferenceFullyResolved, it turns out this does change behavior on
enough cases for x86-32 that I would rather wait a bit on it.
 - In practice, we will want to change this eventually because it only means we
   generate less relocations (it also eliminates the need for the horrible
   '.set' hack that Darwin requires in some places).

llvm-svn: 122042
 2010-12-17 05:50:29 +00:00
Daniel Dunbar b27bb86ba5 MC/Mach-O: Implement IsSymbolRefDifferenceFullyResolved. 
- Unlike for fixups, we always do the "reliable" thing (not just for x86_64).
 - Since Darwin 'as' would typically reject things that using this will allow,
   we don't need to worry about compatibility.

llvm-svn: 122038
 2010-12-17 04:54:58 +00:00
Daniel Dunbar f2adf782ab MC/ObjectWriter: Add a new IsSymbolRefDifferenceFullyResolved target format specific hook. 
- Currently just has stub implementations for Mach-O, ELF, and COFF.

llvm-svn: 122037
 2010-12-17 04:54:54 +00:00
Daniel Dunbar 50269280f8 MC/Assembler: Strip out object writer arguments, now that it is always available 
-- and remove FIXME asking for the same!

llvm-svn: 122032
 2010-12-17 02:45:59 +00:00
Daniel Dunbar 42a037abb1 MC/Assembler: Make the MCObjectWriter available through the lifetime of the 
assembler.

llvm-svn: 122031
 2010-12-17 02:45:41 +00:00
Daniel Dunbar d2867f13a0 MC/Target: Remove HasScatteredSymbols target hook variable, which has been 
superceded and was effectively dead.

llvm-svn: 122024
 2010-12-17 02:06:08 +00:00
Daniel Dunbar e491ea4630 MC/Expr: Simplify. 
llvm-svn: 122023
 2010-12-17 02:05:45 +00:00
Daniel Dunbar f89156da92 MC: Remove another dead MCAssembler argument, and update clients. 
llvm-svn: 122013
 2010-12-17 01:07:35 +00:00