[Bug debug/60381] [4.9 Regression] ICE: in vt_expand_var_loc_chain, at var-tracking.c:8245

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60381

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've measured (everything --enable-checking=release bootstrapped) vanilla
trunk, that + my http://gcc.gnu.org/ml/gcc-patches/2014-03/msg00142.html patch,
trunk with 208220 reverted and the same plus your WIP patch on insn-recog.ii
(on a SNB box):
vanilla
real 2m11.855s
user 2m9.917s
sys 0m1.479s

my
real 2m11.760s
user 2m9.823s
sys 0m1.449s

208220revert
real 2m11.632s
user 2m9.847s
sys 0m1.310s

lxo
real 2m12.491s
user 2m10.699s
sys 0m1.304s

so I guess all the changes are pretty much in the noise when the r208221 change
is in, so we might as well just revert r208220 and do nothing else.