https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108181
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2022-12-19
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
<bb 2> [local count: 1073741809]:
switch (idx_13(D)) <default: <L40> [0.00%], case 0: <L42> [10.00%], case 1:
<L43> [10.00%], case 2: <L44> [10.00%], case 3: <L45> [10.00%], case 4: <L46>
[10.00%], case 5: <L47> [10.00%], case 6: <L48> [10.00%], case 7: <L49>
[10.00%], case 8: <L50> [10.00%], case 9: <L51> [10.00%]>
<bb 3> [local count: 107374182]:
<L42>:
_1 = MEM[(int (*) () * *)f_14(D)];
iftmp.0_43 = *_1;
_45 = iftmp.0_43 (f_14(D)); [tail call]
goto <bb 14>; [100.00%]
<bb 4> [local count: 107374182]:
<L43>:
_2 = MEM[(int (*) () * *)f_14(D)];
iftmp.2_40 = MEM[(int (*) () *)_2 + 8B];
_42 = iftmp.2_40 (f_14(D)); [tail call]
goto <bb 14>; [100.00%]
So 3 things need to happen. First pulling out the load from f_14 (getting the
vtable) out of the switch.
And then pushing the call out of the switch.
And then seeing the load that is left is idx_13(D) * 4.
There are a few bugs for these things but I am not going to look for them right
now.
