test legalizer

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

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