https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63155
--- Comment #38 from Richard Biener <rguenth at gcc dot gnu.org> ---
For the last testcase the compile-time on trunk is now 25s at -O1:
tree PTA : 3.37 ( 13%) 0.10 ( 30%) 3.46 ( 13%)
12445 kB ( 2%)
tree CCP : 4.61 ( 18%) 0.00 ( 0%) 4.62 ( 18%)
646 kB ( 0%)
tree FRE : 2.21 ( 9%) 0.01 ( 3%) 2.21 ( 9%)
116 kB ( 0%)
tree backward propagate : 5.03 ( 20%) 0.00 ( 0%) 5.04 ( 20%)
0 kB ( 0%)
out of ssa : 3.05 ( 12%) 0.00 ( 0%) 3.05 ( 12%)
0 kB ( 0%)
TOTAL : 25.39 0.33 25.72
573954 kB
and perf:
Samples: 9K of event 'instructions', Event count (approx.): 107285199390
Overhead Samples Command Shared Object Symbol
◆
18.06% 1195 cc1 cc1 [.] (anonymous
namespace)::backprop::process_var ▒
5.58% 560 cc1 cc1 [.] visit_phi
▒
5.21% 476 cc1 cc1 [.] inchash::add_expr
▒
5.21% 671 cc1 cc1 [.] VN_INFO
▒
5.14% 493 cc1 cc1 [.] bitmap_set_bit
▒
3.13% 296 cc1 cc1 [.]
hash_table<vn_ssa_aux_hasher, xcallocator>::find_with_hash ▒
2.99% 287 cc1 cc1 [.] vn_phi_lookup
▒
2.39% 229 cc1 cc1 [.] bitmap_ior_into
▒
1.77% 165 cc1 cc1 [.] do_rpo_vn
