7 instructions

[immutable slots]
i0 = 0
i1 = 0x3F800000 (1.0)
i2 = 0x40000000 (2.0)
i3 = 0x40400000 (3.0)

store_src_rg                   coords = src.rg
init_lane_masks                CondMask = LoopMask = RetMask = true
copy_2_immutables_unmasked     y = i0..1 [0, 0x3F800000 (1.0)]
copy_2_slots_unmasked          $0..1 = y
copy_constant                  $2 = 0
copy_constant                  $3 = 0x3F800000 (1.0)
load_src                       src.rgba = $0..3