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Author SHA1 Message Date
Chris Lattner 73f6651439 we already know the sectionkind when invoking SelectSectionForGlobal, 
pass it in instead of recomputing it.

llvm-svn: 76990
 2009-07-24 18:42:53 +00:00
Chris Lattner bf9ac228f7 make SectionForGlobal non-virtual, add a hook for pic16 to do its "address=" hack. 
llvm-svn: 76989
 2009-07-24 18:34:27 +00:00
Chris Lattner 9b6370d230 move ELF-specific code into ELFTargetAsmInfo. 
llvm-svn: 76976
 2009-07-24 17:02:17 +00:00
Chris Lattner b6974c86f5 tidy up 
llvm-svn: 76975
 2009-07-24 16:53:52 +00:00
Chris Lattner 26f704669c split the ELF-specific section flag inference-from-name code out 
into its own helper function.

llvm-svn: 76974
 2009-07-24 16:50:24 +00:00
Chris Lattner a5ca93cdd5 make SectionFlagsForGlobal a private static function instead of a public 
virtual one.

llvm-svn: 76973
 2009-07-24 16:46:50 +00:00
Chris Lattner 552b407f8f move a method up in the file, GV is always non-null, so remove a check. 
llvm-svn: 76972
 2009-07-24 16:44:01 +00:00
Chris Lattner b34d0a2fcb There is no need to pass the name into lib/Target/TargetAsmInfo.cpp 
when we have a global with no section explicitly specified.

llvm-svn: 76971
 2009-07-24 16:40:45 +00:00
Daniel Dunbar 555d1001d5 Another getName -> getNameStr 
llvm-svn: 76967
 2009-07-24 12:21:08 +00:00
Chris Lattner dd2096898b hoist section name uniquing logic up to the top-level SectionForGlobal 
implementation, eliminating a dupe.

llvm-svn: 76953
 2009-07-24 05:10:25 +00:00
Chris Lattner 0f5ebf5509 Replace UniqueSectionForGlobal with getSectionPrefixForUniqueGlobal. 
The later doesn't depend on any crazy LLVM IR stuff, and this
pulls the concatenation of prefix with GV name (the root problem behind
PR4584) out one level.

llvm-svn: 76948
 2009-07-24 04:49:34 +00:00
Chris Lattner 07bd1cd8c5 reduce api exposure: clients shouldn't call SectionKindForGlobal directly. 
llvm-svn: 76941
 2009-07-24 03:49:17 +00:00
Chris Lattner 74b8117134 remove more bits of small section support. 
llvm-svn: 76937
 2009-07-24 03:16:53 +00:00
Chris Lattner 26aff56462 Remove SectionKind::Small*. This was only used on mips, and is apparently 
a sad mistake that is regretted. :)

llvm-svn: 76935
 2009-07-24 03:11:51 +00:00
Chris Lattner d2aeef0703 remove SectionFlags::Small: it is only used on Xcore, and we'll find 
a better solution for it in the future.

llvm-svn: 76818
 2009-07-22 23:27:22 +00:00
Daniel Dunbar 5899dda08c Switch some clients to Value::getName(), and other getName() user 
simplification.
 - NFC

llvm-svn: 76789
 2009-07-22 21:33:09 +00:00
Daniel Dunbar ed1c14ba65 Fix indentation. 
llvm-svn: 76778
 2009-07-22 20:26:37 +00:00
Chris Lattner b300a4f988 remove the SelectSectionForMachineConst hook, replacing it with 
a new getSectionForMergableConstant hook.  This removes one dependence
of TAI on Type, and provides the hook with enough info to make the 
right decision based on whether the global has relocations etc.

llvm-svn: 76705
 2009-07-22 00:28:43 +00:00
Chris Lattner 4565ef5b65 reimplement Constant::ContainsRelocations as 
Constant::getRelocationInfo(), which has a much simpler
to use API.  It still should not be part of libvmcore, but
is better than it was.  Also teach it to be smart about 
hidden visibility.

llvm-svn: 76700
 2009-07-22 00:05:44 +00:00
Chris Lattner aa17ab0669 simplify code now that it is inlined. 
llvm-svn: 76689
 2009-07-21 23:49:55 +00:00
Chris Lattner e61aff6df1 Now that RelocBehaviour() is never overloaded, it doesn't need to be 
virtual.  Just inline it into its two current call sites in preparation
for simplifying the code.

llvm-svn: 76686
 2009-07-21 23:47:11 +00:00
Chris Lattner c21954dff6 minor cleanups. 
llvm-svn: 76645
 2009-07-21 21:09:35 +00:00
Chris Lattner 1177cee9dc Rename LessPrivateGlobalPrefix -> LinkerPrivateGlobalPrefix to match the 
LLVM IR concept.

llvm-svn: 76590
 2009-07-21 17:30:51 +00:00
Chris Lattner ca8192744a fix indentation 
llvm-svn: 76587
 2009-07-21 17:25:13 +00:00
David Greene 40c68ad3bb Re-apply 75490, 75806 and 76177 with fixes and tests. Efficiency comes 
next.

llvm-svn: 76486
 2009-07-20 22:02:59 +00:00
Evan Cheng 0c317a99c4 Revert 76177 for now. It's messing up ARM asm printing. Also this significant debate about its efficiency. 
llvm-svn: 76279
 2009-07-18 01:43:53 +00:00
Chris Lattner e79b2bc088 Untangle a snarl that I discovered when updating the mangler, 
starting in getCurrentFunctionEHName.  Among other problems,
we would try to privative a "foo.eh" label, but end up emitting
the label as _Lfoo.eh instead of L_foo.eh on darwin.  This is really
bad, and the linker has always tolerated these labels existing.
For now, just emit them as _foo.eh.

This patch also fixes problems with ".eh" labels on unnamed
functions and eliminates two strangely defined TargetAsmInfo
hooks.

llvm-svn: 76231
 2009-07-17 20:46:40 +00:00
David Greene 33d1e7db01 Add logic to align instruction operands to columns for pretty-printing. 
No target uses this currently.  This patch only adds the mechanism so
that local installations can choose to enable this.

llvm-svn: 76177
 2009-07-17 14:24:46 +00:00
Duncan Sands cf5b0f4155 Remove StringConstantPrefix now that the only user 
(llvm-gcc) has gone.

llvm-svn: 75781
 2009-07-15 12:39:48 +00:00
Torok Edwin fbcc663cbf llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Owen Anderson e4dcecd006 As Chris pointed out, this doesn't actually need an LLVMContext to operate. 
llvm-svn: 75508
 2009-07-13 21:27:19 +00:00
David Greene de54478bf0 Add infrastructure to allow post instruction printing action triggers. 
We'll eventually use this to print comments in asm files and do other
fun things.

This adds interfaces to the AsmPrinter and changes TableGen to invoke
the postInstructionAction when appropriate.  It also add parameters to
TargetAsmInfo to control comment layout.

llvm-svn: 75490
 2009-07-13 20:25:48 +00:00
Owen Anderson 53a52215b5 Begin the painful process of tearing apart the rat'ss nest that is Constants.cpp and ConstantFold.cpp. 
This involves temporarily hard wiring some parts to use the global context.  This isn't ideal, but it's
the only way I could figure out to make this process vaguely incremental.

llvm-svn: 75445
 2009-07-13 04:09:18 +00:00
Torok Edwin 56d0659726 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Chris Lattner 8284b66264 merge the common darwin settings from the X86/PPC/ARM targets 
into DarwinTargetAsmInfo.cpp.  The remaining differences should
be evaluated.  It seems strange that x86/arm has .zerofill but ppc
doesn't, etc.

llvm-svn: 73742
 2009-06-19 00:08:39 +00:00
Chris Lattner b84764516d move mangler quote handling from asm printers to TargetAsmInfo. 
llvm-svn: 73738
 2009-06-18 23:41:35 +00:00
Chris Lattner 09081b25a5 simplify macro debug info directive handling. 
llvm-svn: 73736
 2009-06-18 23:31:37 +00:00
Devang Patel 80be3511ed Reapply 68847. 
Now debug_inlined section is covered by TAI->doesDwarfUsesInlineInfoSection(), which is false by default.

llvm-svn: 68964
 2009-04-13 17:02:03 +00:00
Dan Gohman 825236b116 Revert r68847. It breaks the build on non-Darwin targets, with this message 
from the assembler:

Error: unknown pseudo-op: `.debug_inlined'
llvm-svn: 68863
 2009-04-11 15:57:04 +00:00
Devang Patel 790e60999e Keep track of inlined functions and their locations. This information is collected when nested llvm.dbg.func.start intrinsics are seen. (Right now, inliner removes nested llvm.dbg.func.start intrinisics during inlining.) 
Create debug_inlined dwarf section using these information. This info is used by gdb, at least on Darwin, to enable better experience debugging inlined functions. See DwarfWriter.cpp for more information on structure of debug_inlined section.

llvm-svn: 68847
 2009-04-11 00:16:47 +00:00
Anton Korobeynikov 7c5f3c40ca Do not propagate ELF-specific stuff (data.rel) into other targets. This simplifies code and also ensures correctness. 
llvm-svn: 68032
 2009-03-30 15:27:43 +00:00
Anton Korobeynikov c247fd396c Add data.rel stuff 
llvm-svn: 68031
 2009-03-30 15:27:03 +00:00
Anton Korobeynikov 088ebede53 Honour relocation behaviour stuff for ro objects 
llvm-svn: 68005
 2009-03-29 17:13:49 +00:00
Duncan Sands 12da8ce3d2 Introduce new linkage types linkonce_odr, weak_odr, common_odr 
and extern_weak_odr.  These are the same as the non-odr versions,
except that they indicate that the global will only be overridden
by an *equivalent* global.  In C, a function with weak linkage can
be overridden by a function which behaves completely differently.
This means that IP passes have to skip weak functions, since any
deductions made from the function definition might be wrong, since
the definition could be replaced by something completely different
at link time.   This is not allowed in C++, thanks to the ODR
(One-Definition-Rule): if a function is replaced by another at
link-time, then the new function must be the same as the original
function.  If a language knows that a function or other global can
only be overridden by an equivalent global, it can give it the
weak_odr linkage type, and the optimizers will understand that it
is alright to make deductions based on the function body.  The
code generators on the other hand map weak and weak_odr linkage
to the same thing.

llvm-svn: 66339
 2009-03-07 15:45:40 +00:00
Anton Korobeynikov 70d4c08cfe Treat [1 x i8] zeroinitializer as a C string, placing such stuff into 
mergeable string section. I don't see any bad impact of such decision
(rather then placing it into mergeable const section, as it was before),
but at least Darwin linker won't complain anymore.

The problem in LLVM is that we don't have special type for string constants
(like gcc does). Even more, we have two separate types: ConstatArray for non-null
strings and ConstantAggregateZero for null stuff.... It's a bit weird :)

llvm-svn: 63142
 2009-01-27 22:29:24 +00:00
Scott Michel 3789a13c30 Make the Dwarf macro information section optional; CellSPU's assembler 
doesn't support it. The default is set to 'true', so this should not
impact any other target backends.

llvm-svn: 63058
 2009-01-26 22:32:51 +00:00
Bill Wendling f9b5ba7bcb Revert r61415 and r61484. Duncan was correct that these weren't needed. 
llvm-svn: 61765
 2009-01-05 22:53:45 +00:00
Devang Patel 56a8bb670f squash warnings. 
llvm-svn: 61707
 2009-01-05 17:31:22 +00:00
Bill Wendling 03f2af79b8 Linux wants the FDE initial location and address range to be forced to 32-bit. 
Darwin doesn't. Make this optional for platforms.

llvm-svn: 61484
 2008-12-29 22:12:11 +00:00
Bill Wendling d6bd7e9372 Darwin likes for the EH frame to be non-local. 
llvm-svn: 61420
 2008-12-24 08:05:17 +00:00
Bill Wendling 066b5f6724 GCC doesn't emit DW_EH_PE_sdata4 for the FDE encoding on Darwin. I'm not sure 
about other platforms.

llvm-svn: 61415
 2008-12-24 05:25:49 +00:00
Rafael Espindola cda011b5ad Fix bug 3140. 
Print a single parameter .file directive if we have an ELF target.

llvm-svn: 60480
 2008-12-03 11:01:37 +00:00
Dan Gohman ac41d9f5d8 Refactor various TargetAsmInfo subclasses' TargetMachine members away 
adding a TargetMachine member to the base TargetAsmInfo class instead.

llvm-svn: 58624
 2008-11-03 18:22:42 +00:00
Duncan Sands 08d91178e9 Rename isWeakForLinker to mayBeOverridden. Use it 
instead of hasWeakLinkage in a bunch of optimization
passes.

llvm-svn: 56782
 2008-09-29 11:25:42 +00:00
Anton Korobeynikov 87001fd6fd Reapply 56585:56589 with proper fix for some gcc versions 
llvm-svn: 56621
 2008-09-25 21:00:33 +00:00
Evan Cheng 84301390ae Temporarily backing out 56585:56589 to unbreak the build. 
llvm-svn: 56607
 2008-09-25 07:38:08 +00:00
Anton Korobeynikov 77aa975bdd Use crazy template-based inheritance instead of virtual one. 
llvm-svn: 56585
 2008-09-24 22:21:39 +00:00
Anton Korobeynikov 8e7b93938d Get rid of ReadOnlySection duplicate 
llvm-svn: 56582
 2008-09-24 22:20:27 +00:00
Anton Korobeynikov 5906234c1d Get rid of now unused {Four,Eight,Sixteen}ByteConstantSection 
llvm-svn: 56580
 2008-09-24 22:18:54 +00:00
Anton Korobeynikov 22db30548d Get rid of duplicate char*/Section* stuff for TLS sections 
llvm-svn: 56577
 2008-09-24 22:17:06 +00:00
Anton Korobeynikov 7497762606 Get rid of duplicate char*/Section* DataSection 
llvm-svn: 56575
 2008-09-24 22:16:16 +00:00
Anton Korobeynikov f8dc8aac3c Get rid of duplicate char*/Section* TextSection 
llvm-svn: 56574
 2008-09-24 22:15:21 +00:00
Anton Korobeynikov 076e905b94 Move actual section printing stuff to AsmPrinter from TAI reducing heap traffic. 
llvm-svn: 56573
 2008-09-24 22:14:23 +00:00
Dale Johannesen f080225490 Fix logic for not emitting no-dead-strip for some 
objects in llvm.used (thanks Anton).  Makes visible
the magic 'l' prefix for symbols on Darwin which are
to be passed through the assembler, then removed at
linktime (previously all references to this had been
hidden in the ObjC FE code, oh well).

llvm-svn: 55973
 2008-09-09 01:21:22 +00:00
Anton Korobeynikov 2ae5446b62 Add interface for section override. Use this for Sparc, since it should use named BSS section. 
llvm-svn: 54844
 2008-08-16 12:58:12 +00:00
Anton Korobeynikov bd890b1faf Move SLEB/ULEB size calculation routines from AsmPrinter to TargetAsmInfo. This makes JIT asmprinter-free. 
llvm-svn: 54843
 2008-08-16 12:57:46 +00:00
Anton Korobeynikov 44b4a9a05d Reduce heap trashing due to std::string construction / concatenation via caching of section flags string representations 
llvm-svn: 54842
 2008-08-16 12:57:07 +00:00
Evan Cheng df8c7faf60 Undo most of r54519. 
llvm-svn: 54534
 2008-08-08 17:56:50 +00:00
Evan Cheng 655fa0fec4 It's not legal to output a GV in a coalesced section if it's used in an ARM PIC relative constantpool. 
llvm-svn: 54519
 2008-08-08 06:56:16 +00:00
Anton Korobeynikov 8ab2f49536 Provide convenient helpers 
llvm-svn: 54451
 2008-08-07 09:51:54 +00:00
Anton Korobeynikov ef643a4850 Select section for constant pool entries 
llvm-svn: 54448
 2008-08-07 09:50:34 +00:00
Anton Korobeynikov 4fdeb9b2d3 Provide default implementation of different small-sections related stuff 
llvm-svn: 53920
 2008-07-22 17:09:59 +00:00
Bruno Cardoso Lopes 9cfd2f8e57 Basic support for small sections 
llvm-svn: 53907
 2008-07-22 15:26:53 +00:00
Dan Gohman efa4160fcc TargetAsmInfo::SectionForGlobal showed up in a profile. Simplify it a little. 
llvm-svn: 53639
 2008-07-15 18:37:51 +00:00
Anton Korobeynikov 56827c1b60 Use only 'subset' of flags 
llvm-svn: 53323
 2008-07-09 13:29:44 +00:00
Anton Korobeynikov daee281590 First sketch of special section objects 
llvm-svn: 53320
 2008-07-09 13:28:49 +00:00
Anton Korobeynikov 577c45dd74 Use isWeakForLinker() hook 
llvm-svn: 53318
 2008-07-09 13:27:59 +00:00
Anton Korobeynikov 13b9a22fb0 Fix several bugs in named sections handling 
llvm-svn: 53312
 2008-07-09 13:25:46 +00:00
Anton Korobeynikov 60919583b3 Add hacky way to distinguish named and named sections. This will be generalized in the future. 
llvm-svn: 53311
 2008-07-09 13:25:26 +00:00
Anton Korobeynikov d789b7c196 Use 'gnu.linkonce', where needed 
llvm-svn: 53310
 2008-07-09 13:24:55 +00:00
Anton Korobeynikov 7504c283f2 Fix thinko 
llvm-svn: 53309
 2008-07-09 13:24:38 +00:00
Anton Korobeynikov 4c37c3ad5b Provide section selection for X86 ELF targets 
llvm-svn: 53305
 2008-07-09 13:23:08 +00:00
Anton Korobeynikov 9d6939b5fc Provide general hook for section name calculation 
llvm-svn: 53304
 2008-07-09 13:22:46 +00:00
Anton Korobeynikov ab778022d5 Properly handle linkonce stuff 
llvm-svn: 53296
 2008-07-09 13:19:38 +00:00
Anton Korobeynikov 7680198798 Provide skeletone code for calculation of section, where global should be emitted into 
llvm-svn: 53295
 2008-07-09 13:19:08 +00:00
Anton Korobeynikov 3ee57868a5 Use 'llvm-linkonce' consistently 
llvm-svn: 53294
 2008-07-09 13:18:38 +00:00
Anton Korobeynikov 21539c6d1e Add default section name resolution routine 
llvm-svn: 53292
 2008-07-09 13:18:02 +00:00
Anton Korobeynikov aab504fb19 Constify 
llvm-svn: 53291
 2008-07-09 13:17:36 +00:00
Anton Korobeynikov 9e4ab5023a Add code for default section falgs computation 
llvm-svn: 53290
 2008-07-09 13:16:59 +00:00
Duncan Sands 04fb6bf468 Linux also does not require exception handling 
moves in order to get correct debug info.  Since
I can't imagine how any target could possibly
be any different, I've just stripped out the
option: now all the world's like Darwin!

llvm-svn: 53134
 2008-07-04 09:55:48 +00:00
Bill Wendling b7bd02be57 Darwin doesn't need exception handling information for the "move" info when 
debug information is being output, because it's leet!

llvm-svn: 52994
 2008-07-01 23:34:48 +00:00
Anton Korobeynikov 2e052a81fd Start refactoring of asmprinters: provide a TAI hook, which will select a 'section kind' for a global. 
llvm-svn: 52868
 2008-06-28 13:45:57 +00:00
Dale Johannesen 355b74acc2 Add StringConstantPrefix to control what the 
assembler names of string constants look like.

llvm-svn: 51909
 2008-06-03 18:09:06 +00:00
Duncan Sands e2b0bf43a7 Output correct exception handling and frame info 
on x86-64 linux.  This causes no regressions on
32 bit linux and 32 bit ppc.  More tests pass
on 64 bit ppc with no regressions.  I didn't
turn on eh on 64 bit linux because the intrinsics
needed to compile the eh runtime aren't done
yet.  But if you turn it on and link with the
mainline runtime then eh seems to work fine
on x86-64 linux with this patch.  Thanks to
Dale for testing.  The main point of the patch
is that if you output that some object is
encoded using 4 bytes you had better not output
8 bytes for it: the patch makes everything
consistent.

llvm-svn: 50825
 2008-05-07 19:11:09 +00:00
Dan Gohman bcde172222 Add AsmPrinter support for emitting a directive to declare that 
the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 

llvm-svn: 50634
 2008-05-05 00:28:39 +00:00
Anton Korobeynikov 0e8b146152 Use enumeration for preffered EH dwarf encoding reason 
llvm-svn: 47770
 2008-02-29 22:09:08 +00:00
Lauro Ramos Venancio 714eeb2d55 Initialize TextAlignFillValue. Fix revision 47703. 
llvm-svn: 47732
 2008-02-28 22:14:09 +00:00
Anton Korobeynikov ae24cca0e4 Preparation step for some cleanup/generalization in EH information emission: 
provide TAI hook for selection of EH data emission format. Currently unused.

llvm-svn: 47699
 2008-02-27 23:33:50 +00:00
Dale Johannesen 00dfb551cc Missed file from previous checkin. 
llvm-svn: 46030
 2008-01-15 23:25:27 +00:00
Dale Johannesen 7ecb3b79c7 Emit unused EH frames for weak definitions on Darwin, 
because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811
 2008-01-10 02:03:30 +00:00