[Bug rtl-optimization/119010] [15 Regression] 444.namd shows a huge compile-time regression with -mtune=znver5

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119010

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|middle-end                  |rtl-optimization
                 CC|                            |hubicka at gcc dot gnu.org
             Target|                            |x86_64-*-*

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Honza, maybe you want to investigate what goes wrong with scheduling or what's
so special about the znver5 automaton?

Samples: 183K of event 'cycles:P', Event count (approx.): 189054710169          
Overhead       Samples  Command  Shared Object                          Symbol  
  33.60%         61318  cc1plus  cc1plus                                [.]
max_issue(ready_list*, int, void*, bool, int*)
  11.00%         20108  cc1plus  cc1plus                                [.]
internal_min_issue_delay(int, DFA_chip*)
   7.98%         14585  cc1plus  cc1plus                                [.]
state_transition(void*, rtx_def*)
   6.42%         11765  cc1plus  cc1plus                                [.]
internal_state_transition(int, DFA_chip*)
   6.05%         11036  cc1plus  libc.so.6                              [.]
__memmove_avx_unaligned_erms