To simplify the callsites and make implementing the same thing on the other
dwarves (prefcnt, pfunct, etc) easy.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
To represent DW_TAG_lexical_block, for now just group the lists of
labels, inline expansions and variables, struct function now has
the root of the tree as ->lexblock.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
And helper routines, so as to separate DW_TAG_subprogram from
the type tags (DW_TAG_structure_type, basic_type, etc).
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This should have been done from the start: all DW_TAG_s will be represented by
structs that has as its first member a struct tag, so that we can fully
represent the DWARF information, following csets will take continue the
restructuring.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
At least GCC only emits DW_TAG_subprogram for inline functions if they were
used somewhere in the CU, even if no DW_TAG_inlined_subroutine tag is emitted
due to optimizations reducing inline functions to nothing.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
prefcnt is a new tool to do reference counting on all the TAGs, starting
from the list of DW_TAG_subroutine tags and going down thru the return type,
parameter list types, variables and inline expansions in the functions, to
help finding unused stuff, its not so effective because of bugs in gcc
DWARF emitting code for concrete inline instances, i.e. the inline expansions
are not all being emitted, see:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29792
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Arnaldo Carvalho de Melo