https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106910
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Keywords| |missed-optimization
Last reconfirmed| |2022-09-12
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
On x86_64:
/app/example.cpp:19:35: missed: function is not vectorizable.
/opt/compiler-explorer/gcc-trunk-20220912/include/c++/13.0.0/cmath:261:28:
missed: not vectorized: relevant stmt not supported: _9 = __builtin_floorf
(_1);
While on aarch64, GCC can handle the SLP just fine:
vect__1.7_12 = MEM <const vector(2) float> [(float *)r_4(D)];
vect__9.8_13 = .FLOOR (vect__1.7_12);
vect__10.9_14 = (vector(2) int) vect__9.8_13;
MEM <vector(2) int> [(int *)&D.25164] = vect__10.9_14;
So this is a target backend improvement that is needed.
