https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120435
Bug ID: 120435
Summary: [New INSN][GCN] Add half-cycle trigonometric INSNs
pattern (sinpi, cospi, …)
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: ams at gcc dot gnu.org
Target Milestone: ---
C23 (and Fortran 2023) added sinpi, cospi, ... half-cycle (180°) trigonometric
functions that take multiple of PI as argument instead of radiant.
GCC supports the associated builtins since r16-710-g591d3d02664c7b.
>From adding INSNs pattern, at least GCN would profit - as it has the following
instructions (in GCN3 and MI300):
* V_COS_F{16,32} - "Cos function. Input must be normalized from radians by
dividing by 2*PI."
* V_SIN_F{16,32} - "Sin function. Input must be normalized from radians by
dividing by 2*PI."
