Commit Graph

2371 Commits

Author SHA1 Message Date
David Blaikie d696fac175 Fix some formatting in my last commit (r201196)
llvm-svn: 201197
2014-02-12 00:32:05 +00:00
David Blaikie 15632ae11a DwarfUnit: Provide a reference to a defining DwarfCompileUnit from DwarfTypeUnit.
Type units need to insert their file strings into the compile unit's
line/file table. This is preliminary work to that end.

llvm-svn: 201196
2014-02-12 00:31:30 +00:00
David Blaikie 101613e903 DwarfUnit: Refactor DW_AT_file creation into a common function.
This is preliminary work to fix type unit file strings so they appear in
their originating CU's line table - but it's also just good/simple
cleanup, so I'm committing it ahead of time.

llvm-svn: 201195
2014-02-12 00:11:25 +00:00
David Blaikie 5201930762 DwarfUnit: Replace unnecessary conditionals with asserts.
We used to be pretty vague about what debug entities were what, with
many conditionals to silently drop/skip/accept things. These don't seem
to be relevant anymore.

llvm-svn: 201194
2014-02-11 23:57:03 +00:00
Adrian Prantl cbcd578f0c Reapply r201180 with an additional error path.
Debug info: Emit values in subregisters that do not have a separate
DWARF register number by emitting a super-register + DW_OP_bit_piece.
This is necessary because on x86_64, there are no DWARF register numbers
for i386-style subregisters.
Fixes a bunch of FIXMEs.

rdar://problem/16015314

llvm-svn: 201190
2014-02-11 22:22:15 +00:00
Adrian Prantl 80b6fd02fa Revert "Debug info: Emit values in subregisters that do not have a separate"
This reverts commit r201179 for buildbot breakage.

llvm-svn: 201188
2014-02-11 22:03:30 +00:00
David Blaikie 284cfc1089 DebugInfo: Don't include the name of the CU file in the line table file list when it's unneeded
This comes up in empty files or files containing #file directives that
never reference the actual source file name. Came up in a small test of
line tables I was playing with.

llvm-svn: 201187
2014-02-11 21:49:46 +00:00
Adrian Prantl c4fd6b71c6 whitespace
llvm-svn: 201181
2014-02-11 21:23:02 +00:00
Adrian Prantl a83cc8a356 Debug info: Emit values in subregisters that do not have a separate
DWARF register number by emitting a super-register + DW_OP_bit_piece.
This is necessary because on x86_64, there are no DWARF register numbers
for i386-style subregisters.
Fixes a bunch of FIXMEs.

rdar://problem/16015314

llvm-svn: 201180
2014-02-11 21:22:59 +00:00
David Blaikie a47009dbd3 DebugInfo: Use existing symbol rather than creating it again.
llvm-svn: 201119
2014-02-11 01:23:52 +00:00
David Blaikie 00107f8203 Remove some prototype code accidentally committed in r201043
Thanks to Chandler for the catch.

llvm-svn: 201095
2014-02-10 16:49:07 +00:00
Rafael Espindola 15b26696af Use a consistent argument order in TargetLoweringObjectFile.
These methods normally call each other and it is really annoying if the
arguments are in different order. The more common rule was that the arguments
specific to call are first (GV, Encoding, Suffix) and the auxiliary objects
(Mang, TM) come after. This patch changes the exceptions.

llvm-svn: 201044
2014-02-09 14:50:44 +00:00
David Blaikie 9aff95c940 Fix formatting introduced in r200941
llvm-svn: 201043
2014-02-09 09:49:29 +00:00
Rafael Espindola fa0f72837f Pass the Mangler by reference.
It is never null and it is not used in casts, so there is no reason to use a
pointer. This matches how we pass TM.

llvm-svn: 201025
2014-02-08 14:53:28 +00:00
Rafael Espindola 61acf5d9b0 Fix a bug with .weak_def_can_be_hidden: Mutable variables cannot use it.
Thanks to John McCall for noticing it.

llvm-svn: 200977
2014-02-07 16:21:30 +00:00
Rafael Espindola a005342db3 Refactor logic into a function predicate.
No functionality change.

llvm-svn: 200976
2014-02-07 16:07:11 +00:00
David Peixotto ea2bcb9e07 Remove const_cast for STI when parsing inline asm
In a previous commit (r199818) we added a const_cast to an existing
subtarget info instead of creating a new one so that we could reuse
it when creating the TargetAsmParser for parsing inline assembly.
This cast was necessary because we needed to reuse the existing STI
to avoid generating incorrect code when the inline asm contained
mode-switching directives (e.g. .code 16).

The root cause of the failure was that there was an implicit sharing
of the STI between the parser and the MCCodeEmitter. To fix a
different but related issue, we now explicitly pass the STI to the
MCCodeEmitter (see commits r200345-r200351).

The const_cast is no longer necessary and we can now create a fresh
STI for the inline asm parser to use.

Differential Revision: http://llvm-reviews.chandlerc.com/D2709

llvm-svn: 200929
2014-02-06 18:19:40 +00:00
Rafael Espindola b4eec1daa1 Remove support for not using .loc directives.
Clang itself was not using this. The only way to access it was via llc.

llvm-svn: 200862
2014-02-05 18:00:21 +00:00
Rafael Espindola 7b51496975 Use the default values.
llvm-svn: 200781
2014-02-04 18:34:04 +00:00
David Blaikie 5e390e4df7 DebugInfo: Remove some unneeded conditionals now that DIBuilder no longer emits zero-length arrays as {i32 0}
A bunch of test cases needed to be cleaned up for this, many my fault -
when implementid imported modules I updated test cases by simply
duplicating the prior metadata field - which wasn't always the empty
metadata entry.

llvm-svn: 200731
2014-02-04 01:23:52 +00:00
Eli Bendersky fc49d19834 Remove some unused #includes
llvm-svn: 200611
2014-02-01 13:12:54 +00:00
Rafael Espindola 499a748bc4 Remove a redundant call to hasRawTextSupport.
The code path it was guarding was already using emitRawComment.

llvm-svn: 200591
2014-01-31 23:14:01 +00:00
Paul Robinson 3878a7818c If we're not producing DWARF accel tables, don't waste memory
keeping track of those entries.

llvm-svn: 200572
2014-01-31 20:39:19 +00:00
Eric Christopher 4b1cf5801f Add support for DW_FORM_flag and DW_FORM_flag_present to the DIE hashing
algorithm. Sink the 'A' + Attribute hash into each form so we don't
have to check valid forms before deciding whether or not we're going
to hash which will let the default be to return without doing anything.

llvm-svn: 200571
2014-01-31 20:02:58 +00:00
David Blaikie 322d79b4a2 DebugInfo: Flag type unit references as declarations
This ensures DWARF consumers don't confuse these references for
definitions. I'd argue it might be nice to improve debuggers so we don't
need this, but it's just one field in an abbreviation anyway - so it
doesn't seem worth the fight.

llvm-svn: 200569
2014-01-31 19:52:26 +00:00
Timur Iskhodzhanov f166f6c8d0 Reland r200340 - 'Add line table debug info to COFF files when using a win32 triple'
This incorporates a couple of fixes reviewed at http://llvm-reviews.chandlerc.com/D2651

llvm-svn: 200440
2014-01-30 01:39:17 +00:00
Eric Christopher 1a97215050 Move range handling for a function to endFunction rather than
when we create the subprogram DIE.

llvm-svn: 200426
2014-01-29 23:05:43 +00:00
Eric Christopher 8873adaa60 If we use DW_AT_ranges we need to specify a base address that ranges
are relative to in the compile unit. Currently let's just use 0...

Thanks to Greg Clayton for the catch!

llvm-svn: 200425
2014-01-29 22:22:56 +00:00
Eric Christopher fb8dd0085e Turn on CU ranges if we've got multiple compile units in the same
module since there's no range guarantee that we could make given
output order. This also fixes up the testcases that have multiple
CUs to have the correct range offset.

llvm-svn: 200422
2014-01-29 22:06:27 +00:00
Eric Christopher 179fba19fa Make the compile unit map a MapVector so that we can assume a stable
output ordering.

llvm-svn: 200421
2014-01-29 22:06:23 +00:00
Eric Christopher 95531b6969 Fix formatting of comment.
llvm-svn: 200420
2014-01-29 22:06:21 +00:00
Renato Golin 8cea6e8fc6 Enable EHABI by default
After all hard work to implement the EHABI and with the test-suite
passing, it's time to turn it on by default and allow users to
disable it as a work-around while we fix the eventual bugs that show
up.

This commit also remove the -arm-enable-ehabi-descriptors, since we
want the tables to be printed every time the EHABI is turned on
for non-Darwin ARM targets.

Although MCJIT EHABI is not working yet (needs linking with the right
libraries), this commit also fixes some relocations on MCJIT regarding
the EH tables/lib calls, and update some tests to avoid using EH tables
when none are needed.

The EH tests in the test-suite that were previously disabled on ARM
now pass with these changes, so a follow-up commit on the test-suite
will re-enable them.

llvm-svn: 200388
2014-01-29 11:50:56 +00:00
NAKAMURA Takumi b366f01f83 Revert r200340, "Add line table debug info to COFF files when using a win32 triple."
It was incompatible with --target=i686-win32.

llvm-svn: 200375
2014-01-29 06:05:38 +00:00
David Woodhouse e6c13e4abd Change MCStreamer EmitInstruction interface to take subtarget info
llvm-svn: 200345
2014-01-28 23:12:42 +00:00
Timur Iskhodzhanov 2c659648b3 Add line table debug info to COFF files when using a win32 triple.
Reviewed at http://llvm-reviews.chandlerc.com/D2232

llvm-svn: 200340
2014-01-28 21:33:27 +00:00
Adrian Prantl c67655a7f4 typo
llvm-svn: 200323
2014-01-28 18:13:47 +00:00
Eric Christopher 2037caf8b9 Revert r199871 and replace it with a simple check in the debug info
code to see if we're emitting a function into a non-default
text section. This is still a less-than-ideal solution, but more
contained than r199871 to determine whether or not we're emitting
code into an array of comdat sections.

llvm-svn: 200269
2014-01-28 00:49:26 +00:00
Eric Christopher f07ee3ae28 Reformat slightly.
llvm-svn: 200264
2014-01-27 23:50:03 +00:00
David Majnemer e035cf9ce4 MC: Add support for .cfi_startproc simple
This commit allows LLVM MC to process .cfi_startproc directives when
they are followed by an additional `simple' identifier. This signals to
elide the emission of target specific CFI instructions that would
normally occur initially.

This fixes PR16587.

Differential Revision: http://llvm-reviews.chandlerc.com/D2624

llvm-svn: 200227
2014-01-27 17:20:25 +00:00
Rafael Espindola 65fd0a8c6b Move emitInlineAsmEnd to the AsmPrinter interface.
There is no inline asm in a .s file. Therefore, there should be no logic to
handle it in the streamer. Inline asm only exists in bitcode files, so the
logic can live in the (long misnamed) AsmPrinter class.

llvm-svn: 200011
2014-01-24 15:47:54 +00:00
Eric Christopher cf48ade87e Revert "Use DW_AT_high_pc and DW_AT_low_pc for the high and low pc for a"
in order to fix the cygwin/mingw bots.

This reverts commit r199990.

llvm-svn: 199991
2014-01-24 11:52:53 +00:00
Eric Christopher c528858cbd Use DW_AT_high_pc and DW_AT_low_pc for the high and low pc for a
compile unit. Make these relocations on the platforms that need
relocations and add a routine to ensure that we don't put the
addresses in an offset table for split dwarf.

llvm-svn: 199990
2014-01-24 11:40:29 +00:00
Rafael Espindola 0e2ccb2df1 Simplify the logic for deciding when to initialize the sections.
llvm-svn: 199971
2014-01-24 03:54:40 +00:00
Eric Christopher 1bca60d652 Make the use of DW_AT_ranges in the compile unit depend also upon
the existence of comdat/special sections.

llvm-svn: 199954
2014-01-23 22:55:47 +00:00
Eric Christopher 4c96056acd Avoid emitting a DWARF type attribute for an ObjC property of type
void.

Patch by Scott Talbot.

llvm-svn: 199924
2014-01-23 19:16:28 +00:00
Greg Fitzgerald 1f6a6086ae Fix inline assembly that switches between ARM and Thumb modes
This patch restores the ARM mode if the user's inline assembly
does not.  In the object streamer, it ensures that instructions
following the inline assembly are encoded correctly and that
correct mapping symbols are emitted.  For the asm streamer, it
emits a .arm or .thumb directive.

This patch does not ensure that the inline assembly contains
the ADR instruction to switch modes at runtime.

The problem we need to solve is code like this:

  int foo(int a, int b) {
    int r = a + b;
    asm volatile(
        ".align 2     \n"
        ".arm         \n"
        "add r0,r0,r0 \n"
    : : "r"(r));
    return r+1;
  }

If we compile this function in thumb mode then the inline assembly
will switch to arm mode. We need to make sure that we switch back to
thumb mode after emitting the inline assembly or we will incorrectly
encode the instructions that follow (i.e. the assembly instructions
for return r+1).

Based on patch by David Peixotto

Change-Id: Ib57f6d2d78a22afad5de8693fba6230ff56ba48b
llvm-svn: 199818
2014-01-22 18:32:35 +00:00
Chandler Carruth b587ab679f Fix a DenseMap iterator invalidation bug causing lots of crashes when
type units were enabled. The crux of the issue is that the
addDwarfTypeUnitType routine can end up being indirectly recursive. In
this case, the reference into the dense map (TU) became invalid by the
time we popped all the way back and used it to add the DIE type
signature.

Instead, use early return in the case where we can bypass the recursive
step and creating a type unit. Then use the pointer to the new type unit
to set up the DIE type signature in the case where we have to.

I tried really hard to reduce a testcase for this, but it's really
annoying. You have to get this to be mid-recursion when the densemap
grows. Even if we got a test case for this today, it'd be very unlikely
to continue exercising this pattern.

llvm-svn: 199630
2014-01-20 08:07:07 +00:00
Adrian Prantl ef129fbb41 Debug info (LTO): Move the creation of accessibility flags to
getOrCreateSubprogramDIE to avoid attributes being added twice when DIEs
are merged.

rdar://problem/15842330.

llvm-svn: 199536
2014-01-18 02:12:00 +00:00
Rafael Espindola 0b694814a8 Add an emitRawComment function and use it to simplify some uses of EmitRawText.
llvm-svn: 199397
2014-01-16 16:28:37 +00:00
Rafael Espindola 74c3e63193 Use a slightly smaller hack.
llvm-svn: 199363
2014-01-16 07:36:00 +00:00
David Majnemer dee105772c WinCOFF: Transform IR expressions featuring __ImageBase into image relative relocations
MSVC on x64 requires that we create image relative symbol
references to refer to RTTI data. Seeing as how there is no way to
explicitly make reference to a given relocation type in LLVM IR, pattern
match expressions of the form &foo - &__ImageBase.

Differential Revision: http://llvm-reviews.chandlerc.com/D2523

llvm-svn: 199312
2014-01-15 09:16:42 +00:00
Eric Christopher 1ad8457570 Make sure we emit a relocation to the debug_ranges section in the
presence of CU ranges.

llvm-svn: 199276
2014-01-15 00:04:29 +00:00
Eric Christopher 39cde8cc90 Enable use of ranges for translation units in the presence of
-ffunction-sections and update comments and TODOs about other
places that we should enable this.

llvm-svn: 199263
2014-01-14 22:44:17 +00:00
Nico Rieck 7157bb765e Decouple dllexport/dllimport from linkage
Representing dllexport/dllimport as distinct linkage types prevents using
these attributes on templates and inline functions.

Instead of introducing further mixed linkage types to include linkonce and
weak ODR, the old import/export linkage types are replaced with a new
separate visibility-like specifier:

  define available_externally dllimport void @f() {}
  @Var = dllexport global i32 1, align 4

Linkage for dllexported globals and functions is now equal to their linkage
without dllexport. Imported globals and functions must be either
declarations with external linkage, or definitions with
AvailableExternallyLinkage.

llvm-svn: 199218
2014-01-14 15:22:47 +00:00
Nico Rieck 9d2e0df049 Revert "Decouple dllexport/dllimport from linkage"
Revert this for now until I fix an issue in Clang with it.

This reverts commit r199204.

llvm-svn: 199207
2014-01-14 12:38:32 +00:00
Nico Rieck e43aaf7967 Decouple dllexport/dllimport from linkage
Representing dllexport/dllimport as distinct linkage types prevents using
these attributes on templates and inline functions.

Instead of introducing further mixed linkage types to include linkonce and
weak ODR, the old import/export linkage types are replaced with a new
separate visibility-like specifier:

  define available_externally dllimport void @f() {}
  @Var = dllexport global i32 1, align 4

Linkage for dllexported globals and functions is now equal to their linkage
without dllexport. Imported globals and functions must be either
declarations with external linkage, or definitions with
AvailableExternallyLinkage.

llvm-svn: 199204
2014-01-14 11:55:03 +00:00
Rafael Espindola 4a1a360634 Make getTargetStreamer return a possibly null pointer.
This will allow it to be called from target independent parts of the main
streamer that don't know if there is a registered target streamer or not. This
in turn will allow targets to perform extra actions at specified points in the
interface: add extra flags for some labels, extra work during finalization, etc.

llvm-svn: 199174
2014-01-14 01:21:46 +00:00
Jakob Stoklund Olesen 1995b9fead Handle bundled terminators in isBlockOnlyReachableByFallthrough.
Targets like SPARC and MIPS have delay slots and normally bundle the
delay slot instruction with the corresponding terminator.

Teach isBlockOnlyReachableByFallthrough to find any MBB operands on
bundled terminators so SPARC doesn't need to specialize this function.

llvm-svn: 199061
2014-01-12 19:24:08 +00:00
Eric Christopher 942f22c439 Revert r198979 - accidental commit.
llvm-svn: 198981
2014-01-11 00:28:12 +00:00
Eric Christopher ceec7b02fa Reformat.
llvm-svn: 198980
2014-01-11 00:23:18 +00:00
Eric Christopher 67cde9ac07 Update function name and add some helpful comments.
llvm-svn: 198979
2014-01-11 00:23:16 +00:00
David Blaikie 15ed5ebfc5 Revert "Revert r198851, "Prototype of skeleton type units for fission""
This reverts commit r198865 which reverts r198851.

ASan identified a use-of-uninitialized of the DwarfTypeUnit::Ty variable
in skeleton type units.

llvm-svn: 198908
2014-01-10 01:38:41 +00:00
NAKAMURA Takumi c5bf572993 Revert r198851, "Prototype of skeleton type units for fission"
It caused undefined behavior. DwarfTypeUnit::Ty might not be initialized properly, I guess.

llvm-svn: 198865
2014-01-09 13:08:00 +00:00
David Blaikie a588365df6 Prototype of skeleton type units for fission
llvm-svn: 198851
2014-01-09 05:08:28 +00:00
David Blaikie 38fe6342f6 DwarfDebug: Refactor out common skeleton construction code to be reused for type unit skeletons.
llvm-svn: 198846
2014-01-09 04:28:46 +00:00
David Blaikie b334e94492 Reformatting for r198842
llvm-svn: 198843
2014-01-09 03:24:13 +00:00
David Blaikie f645f963ff DwarfUnit: Rename "Node" to "CUNode" and propagate it through DwarfTypeUnit as well.
Since we'll now also need the split dwarf file name along with the
language in DwarfTypeUnits, just use the whole DICompileUnit rather than
explicitly handling each field needed.

llvm-svn: 198842
2014-01-09 03:23:41 +00:00
David Blaikie 7480ae6e19 Revert "DwarfUnit: Move the DICompileUnit Node to the DwarfCompileUnit only"
This reverts commit r198830.

Decided to go a different way with this...

llvm-svn: 198841
2014-01-09 03:03:27 +00:00
Chandler Carruth d48cdbf0c3 Put the functionality for printing a value to a raw_ostream as an
operand into the Value interface just like the core print method is.
That gives a more conistent organization to the IR printing interfaces
-- they are all attached to the IR objects themselves. Also, update all
the users.

This removes the 'Writer.h' header which contained only a single function
declaration.

llvm-svn: 198836
2014-01-09 02:29:41 +00:00
David Blaikie 08badfd2ba DwarfUnit: Move the DICompileUnit Node to the DwarfCompileUnit only
It's unused in DwarfTypeUnit, as is expected.

llvm-svn: 198830
2014-01-09 01:20:14 +00:00
Rafael Espindola 894843cb4e Move the llvm mangler to lib/IR.
This makes it available to tools that don't link with target (like llvm-ar).

llvm-svn: 198708
2014-01-07 21:19:40 +00:00
Benjamin Kramer 8a68ab3710 Emit arange padding with a single directive.
llvm-svn: 198700
2014-01-07 19:28:14 +00:00
Chandler Carruth 9aca918df9 Move the LLVM IR asm writer header files into the IR directory, as they
are part of the core IR library in order to support dumping and other
basic functionality.

Rename the 'Assembly' include directory to 'AsmParser' to match the
library name and the only functionality left their -- printing has been
in the core IR library for quite some time.

Update all of the #includes to match.

All of this started because I wanted to have the layering in good shape
before I started adding support for printing LLVM IR using the new pass
infrastructure, and commandline support for the new pass infrastructure.

llvm-svn: 198688
2014-01-07 12:34:26 +00:00
Chandler Carruth 8a8cd2bab9 Re-sort all of the includes with ./utils/sort_includes.py so that
subsequent changes are easier to review. About to fix some layering
issues, and wanted to separate out the necessary churn.

Also comment and sink the include of "Windows.h" in three .inc files to
match the usage in Memory.inc.

llvm-svn: 198685
2014-01-07 11:48:04 +00:00
Rafael Espindola 58873566b3 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.

llvm-svn: 198438
2014-01-03 19:21:54 +00:00
David Blaikie cfb2115e66 Revert "Revert "Debug Info: Type Units: Simplify type hashing using IR-provided unique names.""
This reverts commit r198398, thus reapplying r198397.

I had accidentally introduced an endianness issue when applying the hash
to the type unit. Using support::ulittle64_t in the reinterpret_cast in
addDwarfTypeUnitType fixes this issue.

Original commit message:

Debug Info: Type Units: Simplify type hashing using IR-provided unique
names.

What's good for LTO metadata size problems ought to be good for non-LTO
debug info size too, so let's rely on the same uniqueness in both cases.
If it's insufficient for non-LTO for whatever reason (since we now won't
be uniquing CU-local types or any C types - but these are likely to not
be the most significant contributors to type bloat) we should consider a
frontend solution that'll help both LTO and non-LTO alike, rather than
using DWARF-level DIE-hashing that only helps non-LTO debug info size.

It's also much simpler this way and benefits C++ even more since we can
deduplicate lexically separate definitions of the same C++ type since
they have the same mangled name.

llvm-svn: 198436
2014-01-03 18:59:42 +00:00
David Blaikie ab0ba24983 Revert "Debug Info: Type Units: Simplify type hashing using IR-provided unique names."
Reverting due to bot failure I won't have time to investigate until
tomorrow.

This reverts commit r198397.

llvm-svn: 198398
2014-01-03 04:49:04 +00:00
David Blaikie ddb66281cd Debug Info: Type Units: Simplify type hashing using IR-provided unique names.
What's good for LTO metadata size problems ought to be good for non-LTO
debug info size too, so let's rely on the same uniqueness in both cases.
If it's insufficient for non-LTO for whatever reason (since we now won't
be uniquing CU-local types or any C types - but these are likely to not
be the most significant contributors to type bloat) we should consider a
frontend solution that'll help both LTO and non-LTO alike, rather than
using DWARF-level DIE-hashing that only helps non-LTO debug info size.

It's also much simpler this way and benefits C++ even more since we can
deduplicate lexically separate definitions of the same C++ type since
they have the same mangled name.

llvm-svn: 198397
2014-01-03 04:20:26 +00:00
Eric Christopher 4d214b9e9c 80-column.
llvm-svn: 198394
2014-01-03 02:17:35 +00:00
Eric Christopher 50effa0437 Remove TextSectionSym as it is unused.
llvm-svn: 198393
2014-01-03 02:16:44 +00:00
David Blaikie 22b29a5f1a Revert "Reverting r193835 due to weirdness with Go..."
The cgo problem was that it wants dwarf2 which doesn't support direct
constant encoding of the location. So let's add support for dwarf2
encoding (using a location expression) of data member locations.

This reverts commit r198385.

llvm-svn: 198389
2014-01-03 01:30:05 +00:00
David Blaikie 2ada116a34 Reverting r193835 due to weirdness with Go...
Apologies for the noise - we're seeing some Go failures with cgo
interacting with Clang's debug info due to this change.

llvm-svn: 198385
2014-01-03 00:48:38 +00:00
Eric Christopher 94932438d4 Remove comments on CU skeleton construction, they're probably
obvious.

llvm-svn: 198361
2014-01-02 22:04:47 +00:00
Eric Christopher d8beca3b78 Elaborate on comment for skeleton CU construction.
llvm-svn: 198358
2014-01-02 21:38:18 +00:00
Eric Christopher 40734c4c0c Revert seemingly unnecessary section sym for the data section.
llvm-svn: 198357
2014-01-02 21:38:13 +00:00
Eric Christopher d4368fde45 Fix up a couple of review comments:
Use an if statement instead of a pair of ternary operators checking
the same condition.
Use a cheap method call rather than returning the local symbol.

llvm-svn: 198351
2014-01-02 21:03:28 +00:00
Eric Christopher 8bdb6e1d49 Simplify conditional.
llvm-svn: 198350
2014-01-02 21:03:22 +00:00
Adrian Prantl fd3279f27f Revert "Debug info: Add enumerators to the __apple_names accelerator table."
This reverts r197927 until the discussion on llvm-commits comes to a
conclusion.

llvm-svn: 198333
2014-01-02 18:48:24 +00:00
Eric Christopher 05893f475b Refactor and reduce code duplication for non-split dwarf strings.
llvm-svn: 198233
2013-12-30 18:32:31 +00:00
Eric Christopher d86672037b Revert r198208 and reapply:
r198196: Use a pointer to keep track of the skeleton unit for each normal unit and construct it up front.
      r198199: Reapply r198196 with a fix to zero initialize the skeleton pointer.
      r198202: Fix aranges and split dwarf by ensuring that the symbol and relocation back to the compile unit from the aranges section is to the skeleton unit and not the one in the dwo.

with a fix to use integer 0 for DW_AT_low_pc since the relocation to the text section symbol was causing issues with COFF. Accordingly remove addLocalLabelAddress and machinery since we're not currently using it.

llvm-svn: 198222
2013-12-30 17:22:27 +00:00
NAKAMURA Takumi 17b7310858 Revert r198199 (and r198202). It broke 3 DebugInfo tests for targeting i686-cygming.
r198196: Use a pointer to keep track of the skeleton unit for each normal unit and construct it up front.
  r198199: Reapply r198196 with a fix to zero initialize the skeleton pointer.
  r198202: Fix aranges and split dwarf by ensuring that the symbol and relocation back to the compile unit from the aranges section is to the skeleton unit and not the one in the dwo.

They could be reproducible with explicit target.

  llvm/lib/MC/WinCOFFObjectWriter.cpp:224: bool {anonymous}::COFFSymbol::should_keep() const: Assertion `Section->Number != -1 && "Sections with relocations must be real!"' failed.

llvm-svn: 198208
2013-12-30 09:26:10 +00:00
Eric Christopher c2d401e952 Fix aranges and split dwarf by ensuring that the symbol and relocation
back to the compile unit from the aranges section is to the skeleton
unit and not the one in the dwo.

Do this by adding a method to grab a forwarded on local sym and local
section by querying the skeleton if one exists and using that. Add
a few tests to verify the relocations are back to the correct section.

llvm-svn: 198202
2013-12-30 05:25:49 +00:00
Eric Christopher d039baad05 Reapply r198196 with a fix to zero initialize the skeleton pointer.
llvm-svn: 198199
2013-12-30 03:40:32 +00:00
Eric Christopher be4c91c57c Temporarily revert "Use a pointer to keep track of the skeleton unit for
each normal unit" as it seems to be causing problems in the asan tests.

llvm-svn: 198197
2013-12-30 03:12:31 +00:00
Eric Christopher 83fff3fce7 Use a pointer to keep track of the skeleton unit for each normal unit
and construct it up front. Add address ranges at the end and a helper
routine so that we're not needlessly using an indirction in the case
of split dwarf.

Update testcases according to the new ordering of attributes on
the compile unit.

llvm-svn: 198196
2013-12-30 03:02:12 +00:00
Eric Christopher 8458862f20 Remove AsmPrinter::needsRelocationsForDwarfStringPool() since it's
just calling into MAI and is only abstracting for a single interface that
we actually need to check in multiple places.

llvm-svn: 198092
2013-12-28 01:39:17 +00:00
Adrian Prantl ad64aeac44 Debug info: Add enumerators to the __apple_names accelerator table.
rdar://problem/11516681.

llvm-svn: 197927
2013-12-23 23:50:20 +00:00
Eric Christopher 565ab11a35 Ranges in the .debug_range section need to have begin and end labels,
assert that this is so.

llvm-svn: 197780
2013-12-20 04:34:22 +00:00
Eric Christopher 46e2343554 Add support for a CU to output a set of ranges for the CU. This is useful
when you want to have the full list of addresses for a particular CU or
when you have multiple modules linked together and can't depend upon the
ordering of a single CU for begin/end ranges.

llvm-svn: 197776
2013-12-20 04:16:18 +00:00
Adrian Prantl 99c7af26b7 Debug info: Implement (rvalue) reference qualifiers for C++11 non-static
member functions. Paired commit with CFE.

rdar://problem/15356637

llvm-svn: 197613
2013-12-18 21:48:19 +00:00