17 instructions

store_src_rg                   coords = src.rg
init_lane_masks                CondMask = LoopMask = RetMask = true
splat_2_constants              x, y = 0
copy_constant                  $0 = 0x3F800000 (1.0)
copy_slot_unmasked             y = $0
copy_slot_unmasked             x = $0
splat_3_constants              a, b, c = 0
copy_constant                  $0 = 0
copy_slot_unmasked             c = $0
copy_slot_unmasked             b = $0
copy_slot_unmasked             a = $0
copy_slot_unmasked             $1 = b
mul_float                      $0 *= $1
copy_slot_unmasked             $1 = x
copy_slot_unmasked             $2 = c
copy_slot_unmasked             $3 = y
load_src                       src.rgba = $0..3