https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104601
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And it ICEs again with -O2 -fno-ipa-pure-const if I add [[gnu::const]]
or [[gnu::pure]] attribute to f.
The function seems to be const in that it only returns the result and doesn't
access any other memory, but the return value does not have a gimple reg type
(but is returned in registers on x86_64):
_Z1fi:
movl $1, -8(%rsp)
movb $1, -4(%rsp)
movq -8(%rsp), %rax
ret
And we really should do something to make it
movabsq $4294967297, %rax
ret
or so.
