https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94566
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks|11832, 33315 |
Depends on| |33315
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I've verified my old fix for PR33315 does
t.C:11:45: optimized: sinking common stores to D.8528._M_value
...
conv2 (int i)
{
struct strong_ordering D.8528;
int _7;
<bb 2> [local count: 1073741817]:
switch (i_2(D)) <default: <L3> [0.00%], case -1: <L5> [33.33%], case 0: <L1>
[33.33%], case 1: <L2> [33.33%]>
<bb 3> [local count: 357913942]:
<L1>:
goto <bb 6>; [100.00%]
<bb 4> [local count: 357913942]:
<L2>:
goto <bb 6>; [100.00%]
<bb 5> [count: 0]:
<L3>:
__builtin_unreachable ();
<bb 6> [local count: 1073741824]:
# _7 = PHI <-1(2), 0(3), 1(4)>
<L5>:
D.8528._M_value = _7;
return D.8528;
still not optimized further tho.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11832
[Bug 11832] Optimization of common stores in switch statements
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33315
[Bug 33315] stores not commoned by sinking
