Commit Graph

7 Commits

Author SHA1 Message Date
Greg Clayton 23f59509a8 Ran the static analyzer on the codebase and found a few things.
llvm-svn: 160338
2012-07-17 03:23:13 +00:00
Greg Clayton f56ddeaa6f Added support for the DWARF 4 DW_FORM values.
llvm-svn: 151202
2012-02-22 21:17:27 +00:00
Greg Clayton d1767f05b5 Added a new class called lldb_private::SymbolFileType which is designed to
take a SymbolFile reference and a lldb::user_id_t and be used in objects
which represent things in debug symbols that have types where we don't need
to know the true type yet, such as in lldb_private::Variable objects. This
allows us to defer resolving the type until something is used. More specifically
this allows us to get 1000 local variables from the current function, and if
the user types "frame variable argc", we end up _only_ resolving the type for
"argc" and not for the 999 other local variables. We can expand the use of this
as needed in the future.

Modified the DWARFMappedHash class to be able to read the HashData that has
more than just the DIE offset. It currently will read the atoms in the header
definition and read the data correctly. Currently only the DIE offset and 
type flags are supported. This is needed for adding type flags to the 
.apple_types hash accelerator tables.

Fixed a assertion crash that would happen if we have a variable that had a
DW_AT_const_value instead of a location where "location.LocationContains_DW_OP_addr()"
would end up asserting when it tried to parse the variable location as a
DWARF opcode list.

Decreased the amount of memory that LLDB would use when evaluating an expression
by 3x - 4x for clang. There was a place in the namespace lookup code that was
parsing all namespaces with a certain name in a DWARF file instead of stopping
when it found the first match. This was causing all of the compile units with
a matching namespace to get parsed into memory and causing unnecessary memory
bloat. 

Improved "Target::EvaluateExpression(...)" to not try and find a variable
when the expression contains characters that would certainly cause an expression
to need to be evaluated by the debugger. 

llvm-svn: 146130
2011-12-08 02:13:16 +00:00
Jason Molenda fd54b368ea Update declarations for all functions/methods that accept printf-style
stdarg formats to use __attribute__ format so the compiler can flag
incorrect uses.  Fix all incorrect uses.  Most of these are innocuous,
a few were resulting in crashes.

llvm-svn: 140185
2011-09-20 21:44:10 +00:00
Jim Ingham d3d25d9109 Fix a bunch of places where we were passing Stream *'s but were
never checking them for NULL.  Pass a reference instead.

llvm-svn: 138694
2011-08-27 01:24:54 +00:00
Greg Clayton d88d759a74 15-20% speed improvement when parsing DWARF. I used instruments to
find the hotspots in our code when indexing the DWARF. A combination of
using SmallVector to avoid collection allocations, using fixed form
sizes when possible, and optimizing the hot loops contributed to the
speedup.

llvm-svn: 113961
2010-09-15 08:33:30 +00:00
Chris Lattner 30fdc8d841 Initial checkin of lldb code from internal Apple repo.
llvm-svn: 105619
2010-06-08 16:52:24 +00:00