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Commit Graph

60 Commits

Author SHA1 Message Date
Tim Northover
0301154c0e MachO: actually set linker-private prefix at MC level.
This was accidentally omitted from r205081.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205083 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-29 07:33:24 +00:00
Daniel Sanders
38c6b58eec Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call
Summary:
AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for
targets with mature MC support. Such targets will always parse the inline
assembly (even when emitting assembly). Targets without mature MC support
continue to use EmitRawText() for assembly output.

The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced
with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler
to parse inline assembly (even when emitting assembly output). UseIntegratedAs
is set to true for targets that consider any failure to parse valid assembly
to be a bug. Target specific subclasses generally enable the integrated
assembler in their constructor. The default value can be overridden with
-no-integrated-as.

All tests that rely on inline assembly supporting invalid assembly (for example,
those that use mnemonics such as 'foo' or 'hello world') have been updated to
disable the integrated assembler.

Changes since review (and last commit attempt):
- Fixed test failures that were missed due to configuration of local build.
  (fixes crash.ll and a couple others).
- Fixed tests that happened to pass because the local build was on X86
  (should fix 2007-12-17-InvokeAsm.ll)
- mature-mc-support.ll's should no longer require all targets to be compiled.
  (should fix ARM and PPC buildbots)
- Object output (-filetype=obj and similar) now forces the integrated assembler
  to be enabled regardless of default setting or -no-integrated-as.
  (should fix SystemZ buildbots)

Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2686



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201333 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-13 14:44:26 +00:00
Daniel Sanders
7580df334e Revert r201237+r201238: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call
It introduced multiple test failures in the buildbots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201241 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-12 15:39:20 +00:00
Daniel Sanders
57edb9588b Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call
Summary:
AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for targets with mature MC support. Such targets will always parse the inline assembly (even when emitting assembly). Targets without mature MC support continue to use EmitRawText() for assembly output.

The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler to parse inline assembly (even when emitting assembly output). UseIntegratedAs is set to true for targets that consider any failure to parse valid assembly to be a bug. Target specific subclasses generally enable the integrated assembler in their constructor. The default value can be overridden with -no-integrated-as.

All tests that rely on inline assembly supporting invalid assembly (for example, those that use mnemonics such as 'foo' or 'hello world') have been updated to disable the integrated assembler.

Reviewers: rafael

Reviewed By: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2686

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201237 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-12 14:44:54 +00:00
Rafael Espindola
8e0f67dcec Make the llvm mangler depend only on DataLayout.
Before this patch any program that wanted to know the final symbol name of a
GlobalValue had to link with Target.

This patch implements a compromise solution where the mangler uses DataLayout.
This way, any tool that already links with Target (llc, clang) gets the exact
behavior as before and new IR files can be mangled without linking with Target.

With this patch the mangler is constructed with just a DataLayout and DataLayout
is extended to include the information the Mangler needs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198438 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-03 19:21:54 +00:00
David Fang
b59d46efa5 on darwin<10, fallback to .weak_definition (PPC,X86)
.weak_def_can_be_hidden was not yet supported by the system assembler

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196970 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-10 21:37:41 +00:00
Rafael Espindola
9472fd7403 Refactor the setting of PrivateGlobalPrefix.
No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196170 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-02 23:39:26 +00:00
Rafael Espindola
29a0d2abfe Convert two char* that are only ever used as booleans to bool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196168 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-02 23:04:51 +00:00
Rafael Espindola
4ca0ef70cd The global prefix is always one char. Don't use a string for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195926 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-28 17:00:49 +00:00
Rafael Espindola
de9a1a2055 Remove AllowQuotesInName and friends from MCAsmInfo.
Accepting quotes is a property of an assembler, not of an object file. For
example, ELF can support any names for sections and symbols, but the gnu
assembler only accepts quotes in some contexts and llvm-mc in a few more.

LLVM should not produce different symbols based on a guess about which assembler
will be reading the code it is printing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194575 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-13 14:01:59 +00:00
Rafael Espindola
b46bc1c91b Remove unused flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193752 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-31 15:49:39 +00:00
Benjamin Kramer
a9e37c5eaf Fix alignment of .comm and .lcomm on mingw32.
For some reason .lcomm uses byte alignment and .comm log2 alignment so we can't
use the same setting for both. Fix this by reintroducing the LCOMM enum.
I verified this against mingw's gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163420 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07 21:08:01 +00:00
Benjamin Kramer
39646d96e7 MC: Overhaul handling of .lcomm
- Darwin lied about not supporting .lcomm and turned it into zerofill in the
  asm parser. Push the zerofill-conversion down into macho-specific code.
- This makes the tri-state LCOMMType enum superfluous, there are no targets
  without .lcomm.
- Do proper error reporting when trying to use .lcomm with alignment on a target
  that doesn't support it.
- .comm and .lcomm alignment was parsed in bytes on COFF, should be power of 2.
- Fixes PR13755 (.lcomm crashes on ELF).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163395 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-07 17:25:13 +00:00
Rafael Espindola
9cfc799171 Remove another duplicated variable. We only need one to tell us if the linker
knows dwarf or not.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158993 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22 13:32:49 +00:00
Rafael Espindola
2241e51406 Fix a FIXME: DwarfRequiresRelocationForSectionOffset is the same as
DwarfUsesRelocationsAcrossSections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158992 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22 13:24:07 +00:00
Nick Lewycky
ffccd92310 Emit relocations for DW_AT_location entries on systems which need it. This is
a recommit of r127757. Fixes PR9493. Patch by Paul Robinson!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158957 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-22 01:25:12 +00:00
Jim Grosbach
3e96531186 Refactor data-in-code annotations.
Use a dedicated MachO load command to annotate data-in-code regions.
This is the same format the linker produces for final executable images,
allowing consistency of representation and use of introspection tools
for both object and executable files.

Data-in-code regions are annotated via ".data_region"/".end_data_region"
directive pairs, with an optional region type.

data_region_directive := ".data_region" { region_type }
region_type := "jt8" | "jt16" | "jt32" | "jta32"
end_data_region_directive := ".end_data_region"

The previous handling of ARM-style "$d.*" labels was broken and has
been removed. Specifically, it didn't handle ARM vs. Thumb mode when
marking the end of the section.

rdar://11459456

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157062 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-18 19:12:01 +00:00
Jim Grosbach
2684d9e3c7 Tidy up. Trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156602 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-11 01:41:30 +00:00
David Blaikie
2d24e2a396 Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146960 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20 02:50:00 +00:00
Anton Korobeynikov
0cb2a45cce Emit the ctors in the proper order on ARM/EABI.
Maybe some targets should use this as well.

Patch by Evgeniy Stepanov!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145781 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03 23:49:37 +00:00
Bill Wendling
6ea0467c3d MachO doesn't support the protected visibility. Don't default to 'global' here. <rdar://problem/10396775>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145368 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29 02:39:58 +00:00
Nick Lewycky
390c40d96a Teach our Dwarf emission to use the string pool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143097 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-27 06:44:11 +00:00
Owen Anderson
2fec6c5ff1 Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141135 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04 23:26:17 +00:00
Duncan Sands
147272b8a7 Darwin wants ctors/dtors to be ordered the other way round to linux.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139015 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02 18:07:19 +00:00
Rafael Espindola
dc52ecf6fd Rename DwarfRequiresRelocationForStmtList to
DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131148 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10 20:35:05 +00:00
Rafael Espindola
597a7664e1 Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.

While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130846 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 17:44:06 +00:00
Rafael Espindola
debd7e4e8b Simplify the handling of pcrel relocations on ELF. Now we do the right thing
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.

This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130634 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01 03:50:49 +00:00
Rafael Espindola
a0057ca13f Add the getExprForFDESymbol method that responsible for computing the
expressions used in the FDE to refer to symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130437 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28 21:04:39 +00:00
Rafael Espindola
bfa27cc5d7 Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when
converting the symbol passed to .cfi_personality into bytes is the file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130400 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28 16:09:09 +00:00
Stuart Hastings
5129bdecd8 Omit private_extern declarations of extern symbols; followup to
r124468.  Patch by Rafael Avila de Espindola!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126297 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23 02:27:05 +00:00
Rafael Espindola
90a5a0cd7c Rename NeedsSetToChangeDiffSize to HasAggressiveSymbolFolding which is a much
better name and matches what is used in the MachO writer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122443 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22 21:51:29 +00:00
Rafael Espindola
0bbe0b440e Second try at making direct object emission produce the same results
as llc + llvm-mc. This time ELF is not changed and I tested that llvm-gcc
bootstrap on darwin10 using darwin9's assembler and linker.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121006 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-06 17:27:56 +00:00
Rafael Espindola
767b1be390 Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid
doing that if the target is darwin10 or newer.

This fixes
*) Direct object emission was producing objects without the workaround on
   darwin9.
*) Assembly printing was producing objects with the workaround on linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04 00:31:13 +00:00
Kevin Enderby
e8e98d7f2e Added support for the Mach-O .symbol_resolver directive. rdar://8673046
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119816 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-19 18:39:33 +00:00
Devang Patel
b1fcfbe89b Fix .debug_range for linux. Patch by Krister Wombell.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112830 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02 16:43:44 +00:00
Devang Patel
ae84d5b9ba Use absolute label for DW_AT_stmt_list if a target does not prefer offset here.
This patch was developed on top of original patch by Artur Pietrek.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112678 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31 23:50:19 +00:00
Kevin Enderby
1b02acb2a0 Revert some unneeded parts of the change in r107886 for the
.weak_def_can_be_hidden directive.  Chris pointed out that the MCAsmInfo.h/.cpp
chunks aren't needed for this until the compiler starts generating these.  And
when that happens it will be more convenient for it to be a bool than a const
char*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107906 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08 20:30:44 +00:00
Kevin Enderby
f59cac5ed3 Added the darwin .weak_def_can_be_hidden directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107886 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08 17:22:42 +00:00
Bill Wendling
07d3177117 Revert r107205 and r107207.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107215 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29 22:34:52 +00:00
Bill Wendling
207855cff9 Introducing the "linker_weak" linkage type. This will be used for Objective-C
metadata types which should be marked as "weak", but which the linker will
remove upon final linkage. For example, the "objc_msgSend_fixup_alloc" symbol is
defined like this:

       .globl l_objc_msgSend_fixup_alloc
       .weak_definition l_objc_msgSend_fixup_alloc
       .section __DATA, __objc_msgrefs, coalesced
       .align 3
l_objc_msgSend_fixup_alloc:
        .quad   _objc_msgSend_fixup
        .quad   L_OBJC_METH_VAR_NAME_1

This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107205 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29 21:24:00 +00:00
Eric Christopher
c1a887d76d Partial code for emitting thread local bss data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104197 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20 00:49:07 +00:00
Chris Lattner
09d53fecfc move three lowering hooks from MAI to TLOF and make one of them
semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98145 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 07:20:42 +00:00
Chris Lattner
cee63322ea Eliminate SetDirective, and replace it with HasSetDirective.
Default HasSetDirective to true, since most targets have it.

The targets that claim to not have it probably do, or it is
spelled differently. These include Blackfin, Mips, Alpha, and
PIC16.  All of these except pic16 are normal ELF targets, so
they almost certainly have it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94585 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26 20:40:54 +00:00
Rafael Espindola
2e2563bf8e Emit .comm alignment in bytes but .align in powers of 2 for ARM ELF.
Original patch by Sandeep Patel and updated by me.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94582 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26 20:21:43 +00:00
Chris Lattner
6a315c358c eliminate MCAsmInfo::NeedsSet: we now just use .set on any platform
that has it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26 20:20:43 +00:00
Chris Lattner
f9f93e4388 resolve a fixme: the "nonexecutable stack directive" is actually
a .section.  Switch to it with SwitchSection.

However, I think that this directive should be safe on any ELF target.
If so, we should hoist it up out of the X86 and SystemZ targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-23 07:21:06 +00:00
Chris Lattner
152a29bfa6 mcize visibility directives.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94295 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-23 06:53:23 +00:00
Chris Lattner
3a9be0ee36 mcstreamerize .no_dead_strip and .reference for static ctors/dtors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94290 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-23 05:51:36 +00:00
Chris Lattner
8eeba35bab revert 93934, removing the MCAsmInfo endianness bit. I can't
stomache MCAsmInfo having this, and I found a better solution to
this layering issue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93985 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-20 06:34:14 +00:00
Chris Lattner
c7b8814bb4 give MCAsmInfo a 'has little endian' bit. This is unfortunate, but
I really want clients of the streamer to be able to say "emit this
64-bit integer" and have it get broken down right by the streamer.

I may change this in the future, we'll see how it works out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93934 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-19 22:42:28 +00:00