On Mon, Oct 29, 2012 at 1:43 PM, Jakub Jelinek <ja...@redhat.com> wrote: > > The following patch should fix the var-tracking slowness on the > reflect/check testcases where one of the test routines was compiling for > almost 50 minutes. The problem was that there is a huge routine that is > shrink wrapped (or perhaps just the split stack prologue is multi-bb), > and I was trying to be too conservative when adding frame_pointer_needed > hard_frame_pointer_rtx VTA replacements. Without those replacements we > weren't using DW_OP_fbreg for the hard frame pointer based mem accesses (so > unnecessarily large debug info), but what's worse is that on the hfp VALUE > we got almost 1200 reverse ops in the locs chain, so find_base_term as well > as get_addr has been quite costly.
Thanks for working on this. The patch looks fine to me but I don't know this code well. Ian
