696 Commits

Author SHA1 Message Date
Eric Christopher
7a2cdf798b Add support for emitting a stub DW_AT_GNU_dwo_id as part of the
DWARF5 split dwarf proposal.

llvm-svn: 174350
2013-02-05 07:31:55 +00:00
Manman Ren
53f3f9f0cb [Dwarf] early exit to avoid creating dangling DIEs
We used to create children DIEs for a scope, then check whether ScopeDIE is
null. If ScopeDIE is null, the children DIEs will be dangling. Other DIEs can
link to those dangling DIEs, which are not emitted at all, causing dwarf error.

The current testing case is 4k lines, from MultiSource/BenchMark/McCat/09-vor.

rdar://problem/13071959

llvm-svn: 174084
2013-01-31 20:05:14 +00:00
Eric Christopher
59cc071165 Fix comment.
llvm-svn: 173698
2013-01-28 17:33:26 +00:00
Eric Christopher
4c7765f166 Fix the assembly and dissassembly of DW_FORM_sec_offset. Found this by
changing both the string of the dwo_name to be correct and the type of
the statement list.

Testcases all around.

llvm-svn: 172699
2013-01-17 03:00:04 +00:00
Eric Christopher
1826617133 Add the DW_AT_GNU_addr_base for the skeleton cu. Add support for
emitting the dwarf32 version of DW_FORM_sec_offset and correct
disassembler support.

llvm-svn: 172698
2013-01-17 02:59:59 +00:00
Eric Christopher
962c9089d9 Split address information for DWARF5 split dwarf proposal. This involves
using the DW_FORM_GNU_addr_index and a separate .debug_addr section which
stays in the executable and is fully linked.

Sneak in two other small changes:

a) Print out the debug_str_offsets.dwo section.
b) Change form we're expecting the entries in the debug_str_offsets.dwo
   section to take from ULEB128 to U32.

Add tests for all of this in the fission-cu.ll test.

llvm-svn: 172578
2013-01-15 23:56:56 +00:00
Eric Christopher
bf7bc4966c Last in the series of removing unnecessary '0' arguments for
address space. Reordered the EmitULEB128IntValue arguments to
make this easier.

llvm-svn: 171949
2013-01-09 03:52:05 +00:00
Eric Christopher
e3ab3d0e2c These functions have default arguments of 0 for the last arg. Use
them.

llvm-svn: 171933
2013-01-09 01:57:54 +00:00
Eric Christopher
ce0cfce775 These functions have default arguments of 0 for the last arg. Use
them and add one where it seemed obvious that we wanted one.

llvm-svn: 171932
2013-01-09 01:35:34 +00:00
Eric Christopher
27614589dc Move the string pools down into the units. No functional change.
llvm-svn: 171905
2013-01-08 22:22:06 +00:00
Eric Christopher
b800ff70c5 Whitespace and 80-col.
llvm-svn: 171803
2013-01-07 22:40:45 +00:00
Eric Christopher
2cbd5767ad Add support for separating strings for the split debug info DWARF5
proposal. This leaves the strings in the skeleton die as strp,
but in all dwo files they're accessed now via DW_FORM_GNU_str_index.

Add support for dumping these sections and modify the fission-cu.ll
testcase to have the correct strings and form. Fix a small bug
in the fixed form sizes routine that involved out of array accesses
for the table and add a FIXME in the extractFast routine to fix
this up.

llvm-svn: 171779
2013-01-07 19:32:41 +00:00
Chandler Carruth
9fb823bbd4 Move all of the header files which are involved in modelling the LLVM IR
into their new header subdirectory: include/llvm/IR. This matches the
directory structure of lib, and begins to correct a long standing point
of file layout clutter in LLVM.

There are still more header files to move here, but I wanted to handle
them in separate commits to make tracking what files make sense at each
layer easier.

The only really questionable files here are the target intrinsic
tablegen files. But that's a battle I'd rather not fight today.

I've updated both CMake and Makefile build systems (I think, and my
tests think, but I may have missed something).

I've also re-sorted the includes throughout the project. I'll be
committing updates to Clang, DragonEgg, and Polly momentarily.

llvm-svn: 171366
2013-01-02 11:36:10 +00:00
Eric Christopher
3bf29fda91 For the dwarf5 split debug info code split out the string section
per compile unit/skeleton compile unit. Update tests accordingly.

llvm-svn: 171133
2012-12-27 02:14:01 +00:00
Eric Christopher
48fef599a4 Whitespace and 80-column cleanup.
llvm-svn: 170771
2012-12-20 21:58:40 +00:00
Eric Christopher
e698f53740 Start splitting out the debug string section handling by moving it
into the DwarfUnits class.

llvm-svn: 170770
2012-12-20 21:58:36 +00:00
Eric Christopher
3c5a1914b6 Split out abbreviations for the skeleton info from the rest of
the abbreviations. Part of implementing split dwarf.

llvm-svn: 170589
2012-12-19 22:02:53 +00:00
Eric Christopher
a2de826d29 To simplify some code move the unit emission into the holders.
Make emitDIE public accordingly. No functional change.

llvm-svn: 170258
2012-12-15 00:04:07 +00:00
Eric Christopher
16485a5164 Use begin and end label names from the section for info.
llvm-svn: 170257
2012-12-15 00:04:04 +00:00
Eric Christopher
996b2b7ae6 Use default label name for a section in emitting abbreviation
section to help prep some code to be split about.

llvm-svn: 170088
2012-12-13 03:00:38 +00:00
Eric Christopher
d692c1dbb7 Update some comments.
llvm-svn: 169907
2012-12-11 19:42:09 +00:00
Eric Christopher
c8a310edc1 Refactor out the abbreviation handling into a separate class that
controls each of the abbreviation sets (only a single one at the
moment) and computes offsets separately as well for each set
of DIEs.

No real function change, ordering of abbreviations for the skeleton
CU changed but only because we're computing in a separate order. Fix
the testcase not to care.

llvm-svn: 169793
2012-12-10 23:34:43 +00:00
Eric Christopher
81d091eed9 Remove blank line at top of file.
llvm-svn: 169779
2012-12-10 22:25:38 +00:00
Eric Christopher
cdf218d606 Use the somewhat semantic term "split dwarf" it more matches what's
going on and makes a lot of the terminology in comments make more sense.

llvm-svn: 169758
2012-12-10 19:51:21 +00:00
Eric Christopher
8afd7b6066 Delete the FissionCU.
llvm-svn: 169757
2012-12-10 19:51:18 +00:00
Eric Christopher
d79f5480ac Reorder fission variables.
llvm-svn: 169756
2012-12-10 19:51:13 +00:00
David Blaikie
67cb31ebdd Comment change made in r169304 as requested by Eric Christopher.
llvm-svn: 169315
2012-12-04 22:02:33 +00:00
David Blaikie
5a773bb601 Reapply r160148 (reverted in r163570) fixing spurious breakpoints in modern GDB
This reapplies the fix for PR13303 now with more justification. Based on my
execution of the GDB 7.5 test suite this results in:

expected passes: 16101 -> 20890 (+30%)
unexpected failures: 4826 -> 637 (-77%)

There are 23 checks that used to pass and now fail. They are all in
gdb.reverse. Investigating a few looks like they were accidentally passing
due to extra breakpoints being set by this bug. They're generally due to the
difference in end location between gcc and clang, the test suite is trying to
set breakpoints on the closing '}' that clang doesn't associate with any
instructions.

llvm-svn: 169304
2012-12-04 21:05:36 +00:00
Eli Bendersky
b42d1466a0 Fix PR12942: Allow two CUs to be generated from the same source file.
Thanks Eric for the review.

llvm-svn: 169142
2012-12-03 18:45:45 +00:00
Chandler Carruth
ed0881b2a6 Use the new script to sort the includes of every file under lib.
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
2012-12-03 16:50:05 +00:00
Eric Christopher
9c2ecd93d0 Add some first skeleton work for the DWARF5 Fission proposal. Emit
part of the compile unit CU and start separating out information into
the various sections that will be pulled out later.

WIP.

llvm-svn: 169061
2012-11-30 23:59:06 +00:00
Eric Christopher
acdcbdb17d Attempt to make the comments for dwarf debug look more like
the coding standard would like.

llvm-svn: 168737
2012-11-27 22:43:45 +00:00
Eric Christopher
95198f5035 Reapply section moving, make sure string section is output last.
llvm-svn: 168736
2012-11-27 22:43:42 +00:00
Eric Christopher
6e20a16829 Revert rearrangement of debug info sections to unblock the bots
and O0 + debug codegen.

llvm-svn: 168680
2012-11-27 06:49:23 +00:00
Eric Christopher
4c9b119d64 Add in sections for the fission case (no change so incorrect) and
add a TODO for starting.

llvm-svn: 168643
2012-11-27 00:41:54 +00:00
Eric Christopher
c800b12bae Reorder section output ordering.
llvm-svn: 168638
2012-11-27 00:13:58 +00:00
Eric Christopher
735401cf29 Whitespace cleanup.
llvm-svn: 168637
2012-11-27 00:13:51 +00:00
Eric Christopher
960ac37832 Pull some code out into functions to make rearranging them a bit easier.
llvm-svn: 168481
2012-11-22 00:59:49 +00:00
Eric Christopher
7b30f2e43b Update for some of the coding standard before rearranging functions
around.

llvm-svn: 168401
2012-11-21 00:34:35 +00:00
Eric Christopher
383719592a Remove constness from this, it modifies the output stream as does
everything else underneath.

llvm-svn: 168395
2012-11-20 23:30:11 +00:00
Eric Christopher
1f0cbb826f Remove unused function argument, add a bit to the comment.
llvm-svn: 168387
2012-11-20 22:14:13 +00:00
Eric Christopher
58f4195942 Remove a function argument and propagate const around accordingly.
llvm-svn: 168338
2012-11-19 22:42:15 +00:00
Eric Christopher
6a8413853f Whitespace and 80-col.
llvm-svn: 168337
2012-11-19 22:42:10 +00:00
Eric Christopher
cebb0ec764 Move section label emission to module end. Nothing should be
depending on them being emitted before the text and/or data
sections and testing didn't uncover any.

llvm-svn: 168321
2012-11-19 19:43:59 +00:00
Eric Christopher
2942431175 Add an option to enable prototype "fission" capabilities and debug changes.
llvm-svn: 167765
2012-11-12 22:22:20 +00:00
Bill Wendling
f720bf64d4 Add comment describing what's going on here.
llvm-svn: 167525
2012-11-07 05:19:04 +00:00
Bill Wendling
d9bb9b611b When we're updating the subprogram scope DIE, we want to determine if we're
updating an abstract DIE or not. If we are, then we use that. Its children will
be added on later, as well as the object pointer attribute. Otherwise, this
function may be called with a concrete DIE twice and adding the children and
object pointer attribute to it twice.
<rdar://problem/12401423&12600340>

llvm-svn: 167524
2012-11-07 04:42:18 +00:00
Chandler Carruth
5da3f0512e Revert the majority of the next patch in the address space series:
r165941: Resubmit the changes to llvm core to update the functions to
         support different pointer sizes on a per address space basis.

Despite this commit log, this change primarily changed stuff outside of
VMCore, and those changes do not carry any tests for correctness (or
even plausibility), and we have consistently found questionable or flat
out incorrect cases in these changes. Most of them are probably correct,
but we need to devise a system that makes it more clear when we have
handled the address space concerns correctly, and ideally each pass that
gets updated would receive an accompanying test case that exercises that
pass specificaly w.r.t. alternate address spaces.

However, from this commit, I have retained the new C API entry points.
Those were an orthogonal change that probably should have been split
apart, but they seem entirely good.

In several places the changes were very obvious cleanups with no actual
multiple address space code added; these I have not reverted when
I spotted them.

In a few other places there were merge conflicts due to a cleaner
solution being implemented later, often not using address spaces at all.
In those cases, I've preserved the new code which isn't address space
dependent.

This is part of my ongoing effort to clean out the partial address space
code which carries high risk and low test coverage, and not likely to be
finished before the 3.2 release looms closer. Duncan and I would both
like to see the above issues addressed before we return to these
changes.

llvm-svn: 167222
2012-11-01 09:14:31 +00:00
Benjamin Kramer
1559127f6f Replace some instances of UniqueVector with SetVector, which is slightly cheaper.
No functionality change.

llvm-svn: 167116
2012-10-31 13:45:49 +00:00
Bill Wendling
10e0e2ec49 Fix grammar.
llvm-svn: 167029
2012-10-30 17:51:02 +00:00