[Bug rtl-optimization/90249] [9 Regression] Code size regression on thumb2 due to sub-optimal register allocation starting with r265398

2019-04-25 Thread segher at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90249

Segher Boessenkool  changed:

   What|Removed |Added

Summary|[9/10 Regression] Code size |[9 Regression] Code size
   |regression on thumb2 due to |regression on thumb2 due to
   |sub-optimal register|sub-optimal register
   |allocation starting with|allocation starting with
   |r265398 |r265398

--- Comment #2 from Segher Boessenkool  ---
What difference is there on some code of significant size?  Do you see
regressions then?

Of course there are some tiny examples where it now does worse, just like
there are examples where it now does better.

[Bug rtl-optimization/90249] [9 Regression] Code size regression on thumb2 due to sub-optimal register allocation starting with r265398

2019-04-25 Thread jakub at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90249

Jakub Jelinek  changed:

   What|Removed |Added

   Priority|P3  |P2
 Status|UNCONFIRMED |NEW
   Last reconfirmed||2019-04-25
 CC||jakub at gcc dot gnu.org,
   ||segher at gcc dot gnu.org
Summary|[9 regression] Code size|[9 Regression] Code size
   |regression on thumb2 due to |regression on thumb2 due to
   |sub-optimal register|sub-optimal register
   |allocation. |allocation starting with
   ||r265398
 Ever confirmed|0   |1

--- Comment #1 from Jakub Jelinek  ---
Started with r265398.  Doesn't look severe enough to block a release at this
point, a lot of code changed with that change.