https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105917
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Missed passthru jump |[10/11/12/13 regression]
|function |Missed passthru jump
| |function
--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Looking at the compiler explorer, the both testcases actually works up to gcc
9.5:
reta(a) [clone .constprop.0]:
xorl %eax, %eax
ret
retba(b) [clone .isra.0] [clone .constprop.0]:
jmp reta(a) [clone .constprop.0]
main:
xorl %edi, %edi
jmp retba(b) [clone .isra.0] [clone .constprop.0]
Clang optimizes main to return 0 which we don't due to lack of return
functions.
Also ISRA may trigger on reta+retb and break out the integer rather than
substructure but doesn't.
