Commit Graph

37 Commits

Author SHA1 Message Date
Eric Christopher 193084979f Rewrite the attribute hashing algorithm to use the type of the value
pointed to by the attribute, rather than the form as a first
step to determining how to hash the values. No functional change
intended.

llvm-svn: 203044
2014-03-06 00:38:32 +00:00
Eric Christopher 420569be04 Add support for hashing attributes with DW_FORM_block. This required
passing down an AsmPrinter instance so we could compute the size of
the block which could be target specific. All of the test cases in
the unittest don't have any target specific data so we can use a NULL
AsmPrinter there. This also depends upon block data being added as
integers.

We can now hash the entire fission-cu.ll compile unit so turn the
flag on there with the hash value.

llvm-svn: 201752
2014-02-20 02:50:45 +00:00
Eric Christopher a1b87fdfbf Format.
llvm-svn: 201750
2014-02-20 02:40:41 +00:00
Eric Christopher 8192ba2a7b Add support for hashing DW_FORM_sdata and a small testcase.
llvm-svn: 201747
2014-02-20 00:54:40 +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
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
David Blaikie 68d7e762c3 Remove unnecessary/commented-out header inclusion.
Review feedback from Eric Christopher on r196140

llvm-svn: 196160
2013-12-02 22:11:08 +00:00
David Blaikie 2c86a72331 DebugInfo: Rename DwarfCompileUnit.* to DwarfUnit.* to match their contents.
llvm-svn: 196140
2013-12-02 19:33:15 +00:00
David Blaikie 409dd9c34a DebugInfo: Partial implementation of DWARF type units.
Emit DW_TAG_type_units into the debug_info section using compile unit
headers. This is bogus/unusable by debuggers, but testable and provides
more isolated review.

Subsequent patches will include support for type unit headers and
emission into the debug_types section, as well as comdat grouping the
types based on their hash. Also the CompileUnit type will be renamed
'Unit' and relevant portions pulled out into respective CompileUnit and
TypeUnit types.

llvm-svn: 195166
2013-11-19 23:08:21 +00:00
David Blaikie 9208b5ed8e DIEHash: Move header include to be first in the implementation file to flush out header inclusion ordering issues
llvm-svn: 194588
2013-11-13 18:07:27 +00:00
David Blaikie 8bc7db777d DIEHash: Summary hashing of member functions
llvm-svn: 193432
2013-10-25 20:04:25 +00:00
David Blaikie 65cc969f50 DIEHash: Summary hashing of nested types
llvm-svn: 193427
2013-10-25 18:38:43 +00:00
David Blaikie 2aee7be871 DIEHash: Const correct and use references where non-null/non-rebound.
llvm-svn: 193363
2013-10-24 18:29:03 +00:00
David Blaikie 32744412d2 DIEHash: Do not use shallow type hashing for unnamed types
llvm-svn: 193361
2013-10-24 17:53:58 +00:00
David Blaikie afcb9656c3 DIEHash: Refactor ref attribute hashing into smaller functions
llvm-svn: 193360
2013-10-24 17:51:43 +00:00
David Blaikie 5ebc54d9ea DIEHashing: Provide an assert for unreachable functionality regarding friends.
Since (as of r190716) Clang no longer emits debug info for C++ friend
declarations (and it seems GCC never has/does, which was the motivation
for the Clang change), there's no actual reachable case for implementing
the part of DWARF 4, Section 7.27 part 5 that pertains to friends.

Leave an assert here so that if/when we do have a client producing
friends and using type units, we can fill in the gap and add appropriate
(unit and feature) tests.

llvm-svn: 193193
2013-10-22 20:28:55 +00:00
David Blaikie d70a055394 DWARF type hashing: pointers to members
Includes a test case/FIXME demonstrating a bug/limitation in pointer to
member hashing. To be honest I'm not sure why we don't just always use
summary hashing for referenced types... but perhaps I'm missing
something.

llvm-svn: 193175
2013-10-22 18:14:41 +00:00
David Blaikie fe3233a568 DWARF Type Hashing: Include reference and rvalue reference type in the declarable summary hashing path
More support for 7.25 Part 5.

llvm-svn: 193129
2013-10-21 23:06:19 +00:00
David Blaikie 6cf58c8980 DWARF type hashing: begin implementing Step 5, summary hashing in declarable contexts
There are several other tag types that need similar handling but to
ensure test coverage they'll be coming incrementally.

llvm-svn: 193126
2013-10-21 22:36:50 +00:00
David Blaikie 980d4994b2 DWARF type hashing: Handle multiple (including recursive) references to the same type
This uses a map, keeping the type DIE numbering separate from the DIEs
themselves - alternatively we could do things the way GCC does if we
want to add an integer to the DIE type to record the numbering there.

llvm-svn: 193105
2013-10-21 18:59:40 +00:00
David Blaikie 63bb3e1182 DebugInfo: Hash DW_FORM_GNU_str_index as a string.
Found while adding type safety to the various DWARF enumerations (form,
attribute, tag, etc) that caused Clang to warn on an incompletely
covered switch. Converting the comment to a default/unreachable
uncovered this case of an unsupported form encoding. Seems we were
skipping fission strings entirely.

llvm-svn: 193089
2013-10-21 16:37:22 +00:00
David Blaikie 01fae51fef DIEHash: Add more things (and remove one character) from the COLLECT_ATTR macro
Makes the uses more terse and requires that they use a semicolon at the
end that helps editors indent proceeding lines correctly.

llvm-svn: 192925
2013-10-17 22:14:08 +00:00
David Blaikie ca353be652 DIEHash: Support for simple (non-recursive, non-reused) type references
llvm-svn: 192924
2013-10-17 22:07:09 +00:00
David Blaikie 8a142aaa01 DIEHash: Include the type's context in the type hash.
llvm-svn: 192856
2013-10-17 00:10:34 +00:00
David Blaikie 6316ca45a7 DIEHash: Use DW_FORM_sdata for integers, per spec.
This allows us to produce the same hash as GCC for at least some simple
examples.

llvm-svn: 192855
2013-10-16 23:36:20 +00:00
David Blaikie 920bb2a758 Remove ambiguity introduced in r192836
llvm-svn: 192840
2013-10-16 20:40:46 +00:00
David Blaikie 71a0ad66a9 DIEHash: Include the trailing zero byte after the children of a DIE
llvm-svn: 192836
2013-10-16 20:29:06 +00:00
David Blaikie 94ded5f39e Simplify zero initialization of DIEAttrs variable.
llvm-svn: 192755
2013-10-16 00:47:21 +00:00
Eric Christopher 25b7adc8ce Add a hashing routine that handles hashing types. Add a test for
hashing the contents of DW_FORM_data1 on top of a type with attributes.

llvm-svn: 189862
2013-09-03 21:57:57 +00:00
Eric Christopher e020fa7c9c Add the rest of the stock attributes to the attribute table.
This won't affect the kinds of hashes we test for as we actually
do hashing based on form and attribute. Change the fission-hash
testcase one last time to handle DW_AT_comp_dir.

llvm-svn: 189840
2013-09-03 20:00:20 +00:00
Eric Christopher e9fd605b41 Add a TODO here.
llvm-svn: 189428
2013-08-28 00:13:08 +00:00
Eric Christopher d033d6fb88 Add support for DW_FORM_dataN and DW_FORM_udata to the DIE hashing
algorithm. Update the split dwarf hashing testcase accordingly - this
should be the last time that the hash of an empty file changes.

llvm-svn: 189427
2013-08-28 00:10:38 +00:00
David Blaikie d0d6fcc923 DebugInfo: Prefer references over pointers, pass by const reference for a type that will grow in the future
llvm-svn: 188422
2013-08-14 22:23:05 +00:00
Evgeniy Stepanov b59d82ac66 Pass DIEHash::collectAttributes output argument by-pointer instead of by-value.
Before this, collectAttributes() was operating on a local object.

llvm-svn: 188254
2013-08-13 07:57:01 +00:00
Eric Christopher d29614f98d Add the start of DIE hashing for DWARF4 type units and split dwarf
CUs.

Currently only hashes the name of CUs and the names of any children,
but it's an obvious first step to show the framework. The testcase
should continue to be correct, however, as it's an empty TU.

llvm-svn: 188243
2013-08-13 01:21:55 +00:00
Eric Christopher cede3db5ea Reflow comment.
llvm-svn: 188233
2013-08-12 23:59:24 +00:00
Eric Christopher 4573198b30 Move hash computation code into a separate class and file.
No functional change intended.

llvm-svn: 188028
2013-08-08 23:45:55 +00:00