https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
Andrew Pinski changed:
What|Removed |Added
Severity|normal |enhancement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
--- Comment #6 from Segher Boessenkool ---
There is also SELECT_CC_MODE.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
--- Comment #5 from Segher Boessenkool ---
Various things can change the comparison mode. simplify_compare_const
is the most prominent example (hrm, maybe the only one now?)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
--- Comment #4 from Uroš Bizjak ---
(In reply to Segher Boessenkool from comment #3)
> What is the question? 4+4 = 16?
Ah, indeed - the question is why combine changes CCCmode compare to CCZmode
compare.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
--- Comment #3 from Segher Boessenkool ---
What is the question? 4+4 = 16? Not all costs are included in
that "4+4" :-) It does look weird; patches welcome.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
Uroš Bizjak changed:
What|Removed |Added
CC||segher at gcc dot gnu.org
--- Comment #2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95531
--- Comment #1 from Uroš Bizjak ---
So, what kind of sorcery is this?
(insn 2 4 3 2 (set (reg/v:SI 83 [ x ])
(reg:SI 5 di [ x ])) "pr95531.c":2:1 67 {*movsi_internal}
(expr_list:REG_DEAD (reg:SI 5 di [ x ])
(nil)))
(...)
