test legalizer

; Pre-SSE 4.1, we need to use runtime library calls for floating point rounding operations.
set is_64bit
set is_pic
isa x86

function %floor(f32) -> f32 {
ebb0(v0: f32):
    v1 = floor v0
    return v1
}
; check: function %floor(f32 [%xmm0]) -> f32 [%xmm0] system_v {
; check: sig0 = (f32) -> f32 system_v
; check: fn0 = %FloorF32 sig0
; check: v1 = call fn0(v0)