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71 Commits

Author SHA1 Message Date
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