1d1eced025
Implement MCAsmStreamer::EmitDwarfAdvanceFrameAddr.
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llvm-svn: 130585
2011-04-30 03:21:04 +00:00
27c0c9bb87
Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last
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non private symbol. This will be use for handling
foo:
.cfi_startproc
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On OS X where we have to create a foo.eh symbol.
llvm-svn: 130305
2011-04-27 15:21:19 +00:00
3584ab6cc6
No relocation produces a SLEB or ULEB, make sure they are handled in MC.
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llvm-svn: 130181
2011-04-26 02:17:58 +00:00
6aea59268a
Remove unused argument.
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llvm-svn: 129955
2011-04-21 23:39:26 +00:00
b2545fbc2a
malloc elimination: it's a bad idea to use raw_svector_ostream on a
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small heap-allocated SmallString because it unconditionally forces a malloc.
(Revised version of r129688, with the necessary flush() call.)
llvm-svn: 129716
2011-04-18 20:54:46 +00:00
3f8ecf5cc5
Revert r129688; it's breaking buildbots.
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llvm-svn: 129689
2011-04-18 05:54:54 +00:00
2dc287a147
More malloc elimination: it's a bad idea to use raw_svector_ostream on a
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small heap-allocated SmallString because it unconditionally forces a malloc.
llvm-svn: 129688
2011-04-18 05:38:58 +00:00
745fc89f62
Add constructors to MCElfStreamer and MCObjectStreamer to take an extra MCAssembler * argument.
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llvm-svn: 127343
2011-03-09 17:33:05 +00:00
f849bf81bd
Add some limited support for labels in org directives. Hopefully enough to fix
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PR9245.
llvm-svn: 126091
2011-02-20 20:20:07 +00:00
58ac6e1677
Add support for pushsection and popsection. Patch by Joerg Sonnenberger.
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llvm-svn: 125629
2011-02-16 01:08:29 +00:00
965b3c7323
Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a step
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in the right direction. It eliminated some hacks and will unblock codegen
work. But it's far from being done. It doesn't reject illegal expressions,
e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all.
llvm-svn: 123369
2011-01-13 07:58:56 +00:00
736a35d9ab
Relax address updates in the eh_frame section.
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llvm-svn: 122591
2010-12-28 05:39:27 +00:00
d91e11932c
Assert that the AddrDelta expression is really constant and wrap it in a set
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if we have a lame assembler.
llvm-svn: 122446
2010-12-22 22:04:28 +00:00
5004f4a9b5
Revert 122011, 122012, 122013, 122023 adding back an important optimization.
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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
42a037abb1
MC/Assembler: Make the MCObjectWriter available through the lifetime of the
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assembler.
llvm-svn: 122031
2010-12-17 02:45:41 +00:00
f89156da92
MC: Remove another dead MCAssembler argument, and update clients.
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llvm-svn: 122013
2010-12-17 01:07:35 +00:00
0a017a6db2
Fixed version of 121434 with no new memory leaks.
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llvm-svn: 121471
2010-12-10 07:39:47 +00:00
a945a34c73
Revert my previous patch to make the valgrind bots happy.
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llvm-svn: 121461
2010-12-10 04:01:09 +00:00
56eb741237
Initial support for the cfi directives. This is just enough to get
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f:
.cfi_startproc
nop
.cfi_endproc
assembled (on ELF).
llvm-svn: 121434
2010-12-09 23:48:29 +00:00
93e3cf0ebd
Sorry for such a large commit. The summary is that only MachO cares about the
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actuall addresses in a .o file, so it is better to let the MachO writer compute
it.
This is good for two reasons. First, areas that shouldn't care about
addresses now don't have access to it. Second, the layout of each section
is independent. I should use this in a subsequent commit to speed it up.
Most of the patch is just removing the section address computation. The two
interesting parts are the change on how we handle padding in the end
of sections and how MachO can get the address of a-b when a and b are in
different sections.
Since now the expression evaluation normally doesn't know the section address,
it will think that a-b needs relocation and let the MachO writer know. Once
it has computed the section addresses, it calls back the expression evaluation
with the section addresses to resolve these expressions.
The remaining problem is the handling of padding. Currently it will create
a special alignment fragment at the end. Since that fragment doesn't update
the alignment of the section, it needs the real address to be computed.
Since now the layout will not compute a-b with a and b in different sections,
the only effect that the special alignment fragment has is update the
address size of the section. This can also be done by the MachO writer.
llvm-svn: 121076
2010-12-07 00:27:36 +00:00
1055f72b97
Use references to simplify the code a bit.
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llvm-svn: 121050
2010-12-06 22:30:54 +00:00
1c8ac8f027
There are two reasons why we might want to use
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foo = a - b
.long foo
instead of just
.long a - b
First, on darwin9 64 bits the assembler produces the wrong result. Second,
if "a" is the end of the section all darwin assemblers (9, 10 and mc) will not
consider a - b to be a constant but will if the dummy foo is created.
Split how we handle these cases. The first one is something MC should take care
of. The second one has to be handled by the caller.
llvm-svn: 120889
2010-12-04 03:21:47 +00:00
4c70eeaf33
Make EmitIntValue more efficient and more like what we do for leb128. The
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difference is much smaller (about 0.3s) but significant.
llvm-svn: 120787
2010-12-03 02:54:21 +00:00
675fbb2ad1
Do with uleb the same trick we now do with dwarf line/address advances. This
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avoids creating leb128 fragments and speeds up the test in PR8711 to 33s.
llvm-svn: 120774
2010-12-03 01:19:49 +00:00
57ab708bdd
Try to resolve symbol differences early, and if successful create a plain
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data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.
llvm-svn: 120767
2010-12-03 00:55:40 +00:00
8cabd938ed
Use set directive for StartMinusEndExpr.
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This is a fix for llvm-gcc-i386-darwin9 buildbot failure.
llvm-svn: 120742
2010-12-02 21:32:30 +00:00
9065bfc692
Move EmitValueToOffset to the ObjectStreamer.
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llvm-svn: 120691
2010-12-02 05:59:38 +00:00
3fa6fc1450
Add EmitInstToFragment to the generic object streamer.
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llvm-svn: 120690
2010-12-02 05:44:06 +00:00
a084fd6e9d
Move EmitValue to MCObjectStreamer.
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llvm-svn: 120269
2010-11-28 23:08:47 +00:00
e5b7415b21
Fixed verson of r120245.
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Factor some duplicated code into MCObjectStreamer::EmitLabel.
llvm-svn: 120248
2010-11-28 17:18:55 +00:00
1679580cc9
Revert previous patch while I debug the darwin bootstrap failure.
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llvm-svn: 120246
2010-11-28 16:22:59 +00:00
d4b3feb3f7
Factor some duplicated code into MCObjectStreamer::EmitLabel.
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llvm-svn: 120245
2010-11-28 15:54:36 +00:00
5e874982f2
Add support for expressions in .sleb/.uleb directives.
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llvm-svn: 118023
2010-11-02 17:22:24 +00:00
72b5488680
Move EmitInstruction to MCObjectStreamer so that ELF and MachO can share it.
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llvm-svn: 117925
2010-11-01 16:27:31 +00:00
1614597873
Implement .weakref.
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llvm-svn: 117911
2010-11-01 14:28:48 +00:00
dee12d8110
Avoid some Mach-O specific alignment being done on ELF.
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llvm-svn: 114594
2010-09-22 22:27:05 +00:00
e39017cb97
Add AsmParser support for the ELF .previous directive. Patch by Roman Divacky.
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llvm-svn: 112849
2010-09-02 18:53:37 +00:00
a3e0ddb564
Plug the remaining MC leaks by giving MCObjectStreamer/MCAsmStreamer ownership of the TargetAsmBackend and the MCCodeEmitter.
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llvm-svn: 109767
2010-07-29 17:48:06 +00:00
e2da0a478d
MC: Add WinCOFFStreamer implementation and merge common code from MachO
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into MCObjectStreamer.
Origonal Windows COFF implementation by Nathan Jedffords.
llvm-svn: 108678
2010-07-19 06:13:10 +00:00
b2347fe504
MC: Lift SwitchSection() and Finish() into MCObjectStreamer.
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llvm-svn: 106141
2010-06-16 20:04:25 +00:00
8a3c9d9bc4
MC: Factor out an MCObjectStreamer class, which will be shared by the concrete
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object file format writers.
llvm-svn: 106140
2010-06-16 20:04:22 +00:00
Rafael Espindola