Commit Graph

459 Commits

Author SHA1 Message Date
David Blaikie
09bb56f0a0 DebugInfo: Consider global variables without locations to be valid
We were being a bit too aggresive here in classifying global variables
with no global reference or constant value to be invalid - this would
cause LLVM to not emit the DWARF description of the global variable if
it had been optimized away, which isn't helpful for users who might
benefit from the global variable's description even if there's no
location information.

This also fixes a crasher issue here that I was unable to reduce a test
case for - involving a using decl (& subsequent
DW_TAG_imported_declaration ) of such a global variable that, once
optimized away, would crash when an attempt to emit the imported
declaration was made.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185675 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-04 23:15:18 +00:00
Manman Ren
23f36b9225 Trying to fix the bots
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185489 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-03 00:16:11 +00:00
Manman Ren
0e6783feed Debug Info: use module flag to set up Dwarf version.
Correctly handles ref_addr depending on the Dwarf version. Emit Dwarf with
version from module flag.

TODO: turn on/off features depending on the Dwarf version.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185484 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-02 23:40:10 +00:00
Jyotsna Verma
540579eb26 Add 'REQUIRES: object-emission' to DebugInfo/inlined-arguments.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185465 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-02 19:21:43 +00:00
Ulrich Weigand
b843060ecf [PowerPC] Support TLS variables in debug info
This adds an implementation of getDebugThreadLocalSymbol for
(64-bit) PowerPC.  This needs to return a generic MCExpr
since on ppc64, we need to add a bias of 0x8000 to the
value returned by the R_PPC64_DTPREL64 relocation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185461 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-02 18:47:35 +00:00
David Blaikie
8fed05ec1b PR14728: DebugInfo: TLS variables with -gsplit-dwarf
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185398 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-01 23:55:52 +00:00
David Blaikie
a35ae96291 PR16493: DebugInfo with TLS on PPC crashing due to invalid relocation
Restrict the current TLS support to X86 ELF for now. Test that we don't
produce it on PPC & we can flesh that test case out with the right thing
once someone implements it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185389 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-01 21:45:25 +00:00
NAKAMURA Takumi
d212db0cac llvm-symbolizer: Recognize a drive letter on win32. Then "REQUIRES: shell" can be removed.
FIXME: Could we use llvm::sys::Path here?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185322 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-01 09:51:42 +00:00
David Blaikie
59eaa38746 DebugInfo: PR14728: TLS support
Based on GCC's output for TLS variables (OP_constNu, x@dtpoff,
OP_lo_user), this implements debug info support for TLS in ELF. Verified
that this output is correct/sufficient on Linux (using gold - if you're
using binutils-ld, you'll need something with the fix for
http://sourceware.org/bugzilla/show_bug.cgi?id=15685 in it).

Support on non-ELF is sort of "arbitrary" at the moment - if Apple folks
want to discuss (or just go ahead & implement) how this should work in
MachO, etc, I'm open.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185203 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-28 20:05:11 +00:00
Alexey Samsonov
8c6e3248e9 llvm-symbolizer: skip leading underscore in Mach-O symbol table entries
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185151 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-28 14:25:52 +00:00
Alexey Samsonov
8175bc3d3b llvm-symbolizer: add support for Mach-O universal binaries
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185137 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-28 08:15:40 +00:00
Manman Ren
cbafae6d33 Debug Info: clean up usage of Verify.
No functionality change.
It should suffice to check the type of a debug info metadata, instead of
calling Verify. For cases where we know the type of a DI metadata, use
assert.

Also update testing cases to make them conform to the format of DI classes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185135 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-28 05:43:10 +00:00
Richard Sandiford
7d884e4636 [SystemZ] Allow LA and LARL to be rematerialized
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185069 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-27 09:42:10 +00:00
NAKAMURA Takumi
a6a3fd6415 Move llvm/test/DebugInfo/arguments.ll to X86, for now. It is still Windows' PECOFF incompatible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184750 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-24 16:05:21 +00:00
NAKAMURA Takumi
fb2c145498 llvm/test/DebugInfo/arguments.ll: Add explicit -mtriple=x86_64-unknown-unknown.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184729 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-24 13:19:47 +00:00
David Blaikie
20af501d6f DebugInfo: add some testing from an overly broad end-to-end test in Clang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184692 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-24 06:47:22 +00:00
David Blaikie
fe2e66a6da DebugInfo: PR14404: Avoid truncating 64 bit values into 32 bits for ULEB128/SLEB128 generation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184669 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-23 18:31:11 +00:00
David Blaikie
e88939cfeb DebugInfo: Support (using GNU extensions) for template template parameters and parameter packs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184643 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-22 18:59:11 +00:00
David Blaikie
1948910e31 DebugInfo: Don't lose unreferenced non-trivial by-value parameters
A FastISel optimization was causing us to emit no information for such
parameters & when they go missing we end up emitting a different
function type. By avoiding that shortcut we not only get types correct
(very important) but also location information (handy) - even if it's
only live at the start of a function & may be clobbered later.

Reviewed/discussion by Evan Cheng & Dan Gohman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184604 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-21 22:56:30 +00:00
David Blaikie
63b8e299e4 Give this X86-specific test a triple so it's actually X86-specific.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184443 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-20 17:31:32 +00:00
David Blaikie
4532c280f5 DebugInfo: don't use location lists when the location covers the whole function anyway
Fix up three tests - one that was relying on abbreviation number,
another relying on a location list in this case (& testing raw asm,
changed that to use dwarfdump on the debug_info now that that's where
the location is), and another which was added in r184368 - exposing a
bug in that fix that is exposed when we emit the location inline rather
than through a location list. Fix that bug while I'm here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184387 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-20 00:25:24 +00:00
David Blaikie
cc631588a9 Spelling correction
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184370 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-19 22:00:13 +00:00
David Blaikie
0159ae4295 DebugInfo: PR14763/r183329 correct the location of indirect parameters
We had been papering over a problem with location info for non-trivial
types passed by value by emitting their type as references (this caused
the debugger to interpret the location information correctly, but broke
the type of the function). r183329 corrected the type information but
lead to the debugger interpreting the pointer parameter as the value -
the debug info describing the location needed an extra dereference.

Use a new flag in DIVariable to add the extra indirection (either by
promoting an existing DW_OP_reg (parameter passed in a register) to
DW_OP_breg + 0 or by adding DW_OP_deref to an existing DW_OP_breg + n
(parameter passed on the stack).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184368 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-19 21:55:13 +00:00
David Blaikie
0812304ad8 Spell correct (s/begining/beginning/)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184362 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-19 21:42:05 +00:00
David Blaikie
3df7d2f70b llvm-dwarfdump: Add support for dumping the .debug_loc section
This is a basic implementation - we still don't have any support (that I
know of) for dumping DWARF expressions in a meaningful way, so the
location information itself is just printed as a sequence of bytes as we
do elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184361 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-19 21:37:13 +00:00
JF Bastien
d5d7410982 Fix frame pointer debug information test
Run the test at O1 instead of O0: ARM FastISel keeps frame pointers around and ignores the flag. The test should now pass on ARM and still passes on x86.See: http://llvm.org/bugs/show_bug.cgi?id=16322

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183999 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-14 19:55:26 +00:00
David Blaikie
032d62487c PR15662: Optimized debug info produces out of order function parameters
When a function is inlined we lazily construct the variables
representing the function's parameters. After that, we add any remaining
unused parameters.

If the function doesn't use all the parameters, or uses them out of
order, then the DWARF would produce them in that order, producing a
parameter order that doesn't match the source.

This fix causes us to always keep the arg variables at the start of the
variable list & in the original order from the source.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183297 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-05 05:39:59 +00:00
Alexey Samsonov
888ca964a4 [llvm-symbolizer] Avoid calling slow getSymbolSize for Mach-O files. Assume that symbols with zero size are in fact large enough.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183213 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-04 07:57:38 +00:00
Alexey Samsonov
625b109916 Correct handling invalid filename in llvm-symbolizer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183102 91177308-0d34-0410-b5e6-96231b3b80d8
2013-06-03 14:12:39 +00:00
Rafael Espindola
9e3e730417 Revert r182937 and r182877.
r182877 broke MCJIT tests on ARM and r182937 was working around another failure
by r182877.

This should make the ARM bots green.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182960 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-30 20:37:52 +00:00
Rafael Espindola
977de2d869 Don't use fast isel on this test.
This fixes the test on ARM. Looks like it was broken by r182877. Not
sure if this is a bug on fast isel on ARM, but this should help fix
the ARM bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182937 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-30 16:29:28 +00:00
Tim Northover
aae0fa998a Teach ReMaterialization to be more cunning about subregisters
This allows rematerialization during register coalescing to handle
more cases involving operations like SUBREG_TO_REG which might need to
be rematerialized using sub-register indices.

For example, code like:
    v1(GPR64):sub_32 = MOVZ something
    v2(GPR64) = COPY v1(GPR64)
should be convertable to:
    v2(GPR64):sub_32 = MOVZ something

but previously we just gave up in places like this

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182872 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-29 19:32:06 +00:00
Manman Ren
742671bf8e LTO+Debug Info: revert r182791.
Since the testing case uses ref_addr, which requires version 3+ to work,
we will solve the dwarf version issue first.

This patch also causes failures in one of the bots. I will update the patch
accordingly in my next attempt.

rdar://13926659


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182867 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-29 17:16:59 +00:00
Benjamin Kramer
b8303eb654 Move test that depends on the X86 backend into the right subdirectory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182834 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-29 08:40:49 +00:00
Manman Ren
9174fd77e5 LTO+Debug Info: correctly emit inlined_subroutine when the inlined callee is
from a different CU.

We used to print out an error message and fail to generate inlined_subroutine.

If we use ref_addr in the generated DWARF, the DWARF version should be 3 or
above.
rdar://13926659


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182791 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-28 19:01:58 +00:00
David Blaikie
3d33184d9d Solidify the assumption that a DW_TAG_subprogram's type is a DW_TAG_subroutine_type
There were bits & pieces of code lying around that may've given the
impression that debug info metadata supported the possibility that a
subprogram's type could be specified by a non-subroutine type describing
the return type of a void function. This support was incomplete &
unnecessary. Asserts & API have been changed to make the desired usage
more clear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182532 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-22 23:22:18 +00:00
Manman Ren
01cb18ea08 Dwarf: use a single line table to generate assembly when .loc is used.
This is to fix PR15408 where an undefined symbol Lline_table_start1 is used.
Since we do not generate the debug_line section when .loc is used,
Lline_table_start1 is not emitted and we can't refer to it when calculating
at_stmt_list for a compile unit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182344 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-21 00:57:22 +00:00
David Blaikie
7b72cc7782 PR14606: Debug Info for namespace aliases/DW_TAG_imported_module
This resolves the last of the PR14606 failures in the GDB 7.5 test
suite by implementing an optional name field for
DW_TAG_imported_modules/DIImportedEntities and using that to implement
C++ namespace aliases (eg: "namespace X = Y;").

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182328 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-20 22:50:35 +00:00
Adrian Prantl
df68803890 Generate debug info for by-value struct args even if they are not used.
radar://problem/13865940

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182062 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-16 23:44:12 +00:00
David Blaikie
acd1d031b8 Give the test from r181632 a target triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181637 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-10 22:14:39 +00:00
David Blaikie
4de9d72883 PR14492: Debug Info: Support for values of non-integer non-type template parameters.
This is only tested for global variables at the moment (& includes tests
for the unnamed parameter case, since apparently this entire function
was completely untested previously)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181632 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-10 21:52:07 +00:00
Eric Christopher
c496875f0c Revert "Make sure debug info contains linkage names (DW_AT_MIPS_linkage_name)"
temporarily while investigating gdb.cp/templates.exp.

This reverts commit r181471.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181496 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-09 00:42:33 +00:00
Eric Christopher
cc55d4528c Make sure debug info contains linkage names (DW_AT_MIPS_linkage_name)
for constructors and destructors since the original declaration given
by the AT_specification both won't and can't.

Patch by Yacine Belkadi, I've cleaned up the testcases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181471 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-08 21:23:22 +00:00
David Blaikie
aa76a93cd3 Debug Info: Support DW_TAG_imported_declaration
This provides basic functionality for imported declarations. For
subprograms and types some amount of lazy construction is supported (so
the definition of a function can proceed the using declaration), but it
still doesn't handle declared-but-not-defined functions (since we don't
generally emit function declarations).

Variable support is really rudimentary at the moment - simply looking up
the existing definition with no support for out of order (declaration,
imported_module, then definition).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181392 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-08 06:01:41 +00:00
David Blaikie
498c91e341 Debug Info: Fix for break due to r181271
Apparently we didn't keep an association of Compile Unit metadata nodes
to DIEs so looking up that parental context failed & thus caused no
DW_TAG_imported_modules to be emitted at the CU scope. Fix this by
adding the mapping & sure up the test case to verify this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181339 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-07 17:57:13 +00:00
David Blaikie
d2e0f7ee15 DebugInfo: Support imported modules in lexical blocks
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181271 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 23:33:07 +00:00
Ulrich Weigand
e5c8c24ed5 [SystemZ] Update non-pic DWARF encodings
As pointed out by Rafael Espindola, we should match the DWARF encodings
produced by GCC in both pic and non-pic modes.  This was not the case
for the non-pic case.

This patch changes all DWARF encodings to DW_EH_PE_absptr for the
non-pic case, just like GCC does.  The test case is updated to check
for both variants.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181222 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 17:28:30 +00:00
Ulrich Weigand
25cf4ebd50 [SystemZ] Add DebugInfo test cases
This adds all DebugInfo tests for the SystemZ target.

This version of the patch incorporates feedback from reviews by
Eric Christopher and Rafael Espindola.  Thanks to all reviewers!

Patch by Richard Sandiford.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181205 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 16:18:29 +00:00
Manman Ren
436849be6a TBAA: remove !tbaa from testing cases if not used.
This will make it easier to turn on struct-path aware TBAA since the metadata
format will change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180935 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-02 18:11:35 +00:00
Adrian Prantl
86a87d9ba1 Temporarily revert "Change the informal convention of DBG_VALUE so that we can express a"
because it breaks some buildbots.

This reverts commit 180816.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180819 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-30 22:35:14 +00:00