http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57057
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target| |x86_64-*-*, i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-04-25
Ever Confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2013-04-25
08:14:23 UTC ---
That it's "fixed" with -O1 is because the different MINPS invocations are
CSEd and only the first one is carried out.
The issue here is that MINPS is not commutative, but the SMIN RTX code
is specified as being commutative. Which means with !flag_finite_math_only
the x86 backend has to use an UNSPEC to expand __builtin_ia32_minps and
friends.
