[PATCH 0/3] libdw: Tweaks for optimization and clarity
Josh Stone
jistone at redhat.com
Thu Dec 11 19:31:58 UTC 2014
On 12/10/2014 06:48 PM, Josh Stone wrote:
> While looking at performance for Mark's form-len patch, I found a few areas
> that I felt could be cleaned up a bit.
>
> 1. die->abbrev initialization was duplicated in a few places.
> 2. dwarf_hasattr needn't look at the die at all, just abbrev.
> 3. CU start/end boundaries don't need to be computed from section data
> every time -- just remember them in Dwarf_CU.
>
> These patches get me back down to about 71s for "varlocs -k >/dev/null". :)
> ---
> libdw/ChangeLog | 19 +++++++++++++++++++
> libdw/dwarf_child.c | 47 ++++++++++++++++++-----------------------------
> libdw/dwarf_cuoffset.c | 4 ++--
> libdw/dwarf_dieoffset.c | 4 ++--
> libdw/dwarf_getattrs.c | 21 ++++++++-------------
> libdw/dwarf_hasattr.c | 42 ++++++++++++++++++++++++++++++++++++++----
> libdw/dwarf_haschildren.c | 20 ++++----------------
> libdw/dwarf_siblingof.c | 6 ++----
> libdw/dwarf_tag.c | 20 +++++---------------
> libdw/libdwP.h | 28 +++++++++++++++++++++++++++-
> libdw/libdw_findcu.c | 6 +++++-
> 11 files changed, 130 insertions(+), 87 deletions(-)
>
I tweaked comments and ChangeLog entries as Mark asked, and all three
patches are now on master.
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