6b55cb9cd8
implement mc asmparser support for '.', which gets the
...
current PC. rdar://7834775
We now produce an identical .o file compared to the cctools
assembler for something like this:
_f0:
L0:
jmp L1
.long . - L0
L1:
jmp A
.long . - L1
.zerofill __DATA,_bss,A,0
llvm-svn: 101227
2010-04-14 04:40:28 +00:00
5418dd5fda
move elf section uniquing to MCContext. Along the way
...
merge XCore's section into MCSectionELF
llvm-svn: 100812
2010-04-08 21:26:26 +00:00
2073112fc0
move macho section uniquing from MCParser and TLOF to MCContext where
...
the compiler and asmparser now unique to the same sections. This fixes
rdar://7835021.
llvm-svn: 100807
2010-04-08 20:30:37 +00:00
53dd088b58
Various MSVC warning fixes about truncated 64 bit shifts and const pointers passed to free.
...
llvm-svn: 100767
2010-04-08 15:25:57 +00:00
2104b8d36e
rename llvm::llvm_report_error -> llvm::report_fatal_error
...
llvm-svn: 100709
2010-04-07 22:58:41 +00:00
3b21e4d404
Give AsmParser an option to control whether it finalizes
...
the stream. New demo:
$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000 subq $0x08,%rsp
0000000000000004 movl %edi,(%rsp)
0000000000000007 movl %edi,%eax
0000000000000009 incl %eax
000000000000000b movl %eax,(%rsp)
000000000000000e movl %eax,0x04(%rsp)
0000000000000012 addq $0x08,%rsp
0000000000000016 ret
llvm-svn: 100492
2010-04-05 23:15:42 +00:00
324c86600d
eliminate the magic AbsoluteDebugSectionOffsets MAI hook,
...
which is really a property of the section being referenced.
Add a predicate to MCSection to replace it.
Yay for reduction in magic.
llvm-svn: 100367
2010-04-04 23:22:29 +00:00
e239fa05cd
isAbsoluteEHSectionOffsets always returns false, eliminate it
...
and substitute false at the one call site.
llvm-svn: 100354
2010-04-04 21:29:44 +00:00
7012916275
fix an ugly wart in the MCInstPrinter api where the
...
raw_ostream to print an instruction to had to be specified
at MCInstPrinter construction time instead of being able
to pick at each call to printInstruction.
llvm-svn: 100307
2010-04-04 05:04:31 +00:00
1716721df1
add a twine form of MCStreamer::EmitRawText, and mc'ize
...
a few more things in AsmPrinter.cpp.
llvm-svn: 100294
2010-04-03 22:12:35 +00:00
aca014e24e
allow attaching comments to raw text.
...
llvm-svn: 100292
2010-04-03 22:06:56 +00:00
6ec72d2e8f
add <cstdlib> header for abort() on linux builders.
...
llvm-svn: 100290
2010-04-03 21:48:59 +00:00
8a87fb7633
add a new EmitInlineAsm function to asmprinter to handle inline asm.
...
If we have an MCAsmStreamer, we continue to emit asm textually,
otherwise we (currently) emit an error to errs and ignore it.
llvm-svn: 100289
2010-04-03 21:35:55 +00:00
9897043928
Rip out the 'is temporary' nonsense from the MCContext interface to
...
create symbols. It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.
This fixes rdar://7807601.
llvm-svn: 99902
2010-03-30 18:10:53 +00:00
c95156262d
MC/Mach-O/x86_64: Support @GOTPCREL on symbols, even for non-PCrel relocations!
...
llvm-svn: 99853
2010-03-29 23:56:40 +00:00
d821f4ac60
llvm-mc: Add a -mc-relax-all option, which relaxes every fixup. We always need
...
exactly two passes in that case, and don't ever need to recompute any layout,
so this is a nice baseline for relaxation performance.
llvm-svn: 99563
2010-03-25 22:49:09 +00:00
6432bd744e
MC: Stop restarting layout on every relaxation.
...
- Still O(N^2), just a faster form, and now its the MCAsmLayout's fault.
On the .s I am tuning against (combine.s from 403.gcc):
--
ddunbar@lordcrumb:MC$ diff stats-before.txt stats-after.txt
5,10c5,10
< 1728 assembler - Number of assembler layout and relaxation steps
< 7707 assembler - Number of emitted assembler fragments
< 120588 assembler - Number of emitted object file bytes
< 2233448 assembler - Number of evaluated fixups
< 1727 assembler - Number of relaxed instructions
< 6723845 mcexpr - Number of MCExpr evaluations
---
> 3 assembler - Number of assembler layout and relaxation steps
> 7707 assembler - Number of emitted assembler fragments
> 120588 assembler - Number of emitted object file bytes
> 14796 assembler - Number of evaluated fixups
> 1727 assembler - Number of relaxed instructions
> 67889 mcexpr - Number of MCExpr evaluations
--
Feel free to LOL at the -before numbers, if you like.
I am a little surprised we make more than 2 relaxation passes. It's pretty
trivial for us to do relaxation out-of-order if that would give a speedup.
llvm-svn: 99543
2010-03-25 19:35:56 +00:00
0ba6a671d4
MC: Simplify main section layout process by moving alignment into LayoutSection.
...
llvm-svn: 99529
2010-03-25 18:16:42 +00:00
25d114b2b2
MC: Sink Section address assignment into LayoutSection.
...
llvm-svn: 99528
2010-03-25 18:16:38 +00:00
951459740c
MC/Mach-O: Switch to MCSectionData::getOrdinal.
...
llvm-svn: 99504
2010-03-25 08:08:54 +00:00
4108802628
MC: Explicity track section and fragment ordinals.
...
llvm-svn: 99500
2010-03-25 07:10:11 +00:00
eaa792f0d9
Fix -Asserts warning.
...
llvm-svn: 99499
2010-03-25 07:10:05 +00:00
5b07334c0d
MC: Route access to SectionData offset and file size through MCAsmLayout.
...
llvm-svn: 99474
2010-03-25 02:00:07 +00:00
2522dd1c49
MC: Route access to Fragment offset and effective size through MCAsmLayout.
...
llvm-svn: 99473
2010-03-25 02:00:02 +00:00
5d98824615
MC: Eliminate MC{Fragment,{Section,Symbol}Data}::getAddress.
...
llvm-svn: 99467
2010-03-25 01:03:24 +00:00
5caf2ff561
MC: Fix refacto in MCExpr evaluation, I mistakenly replaced a fragment address with a symbol address.
...
- This fixes the integrated-as nightly test regressions.
llvm-svn: 99466
2010-03-25 01:03:17 +00:00
7c969558d9
MC: Direct all {fragment,section,symbol} address access through the MCAsmLayout object.
...
llvm-svn: 99380
2010-03-24 03:43:40 +00:00
5376c2a431
MC: Sprinkle in some more interesting statistics.
...
llvm-svn: 99350
2010-03-23 23:47:14 +00:00
5cfb58719d
llvm-mc: Fast path EvaluateAbsolute of constants.
...
llvm-svn: 99348
2010-03-23 23:47:07 +00:00
de04b3f62c
MC: Switch to using MCInst fragments to do relaxation.
...
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.
...
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.
...
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.
...
llvm-svn: 99244
2010-03-23 01:39:05 +00:00
a99d232803
Put MCSectionCOFF::Name into the MCContext instead of leaking it.
...
llvm-svn: 99231
2010-03-22 23:26:12 +00:00
b31c49a70d
MC: Add MCInstFragment, not used yet.
...
llvm-svn: 99229
2010-03-22 23:16:48 +00:00
a75f01a905
Add a FIXME.
...
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.
...
llvm-svn: 99218
2010-03-22 21:49:41 +00:00
20ea02fde2
Simplify.
...
llvm-svn: 99217
2010-03-22 21:49:38 +00:00
04047fbe14
MCInst: Add ::dump_pretty.
...
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.
...
llvm-svn: 99205
2010-03-22 20:35:50 +00:00
f1f1827bfa
MC/Mach-O: Factor out getOrCreateDataFragment().
...
llvm-svn: 99204
2010-03-22 20:35:46 +00:00
9213355a91
MC: Eliminate MCFragment::getMaxFileSize.
...
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.
...
llvm-svn: 99202
2010-03-22 20:35:35 +00:00
5ea5fab22b
Better fix for r98994, MachObjectWriterImpl wasn't intended to be virtual.
...
llvm-svn: 99031
2010-03-20 01:58:40 +00:00
07b4f8cd4b
Fix -Wnon-virtual-dtor warning.
...
llvm-svn: 98994
2010-03-19 21:26:46 +00:00
1a81ad3559
MC/Mach-O/x86_64: Add relocation support.
...
- 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.
...
- 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.
...
llvm-svn: 98954
2010-03-19 10:43:23 +00:00
1bd7171c95
MC: Sink code emitter into MCAssembler.
...
llvm-svn: 98953
2010-03-19 10:43:18 +00:00
79e0e5a631
MC/Mach-O: Move to MachObjectWriter.{h,cpp}.
...
llvm-svn: 98952
2010-03-19 10:43:15 +00:00
Chris Lattner