test regalloc
target x86_64

; Test that fallthrough returns are visited by reload and coloring.

function %foo() -> f64 {
  fn0 = %bar()

ebb0:
  v0 = f64const 0.0
  call fn0()
  fallthrough_return v0
}
; check: fill v0

function %foo() -> f64 {
  fn0 = %bar() -> f64, f64

ebb0:
  v0, v1 = call fn0()
  fallthrough_return v1
}
; check: regmove v1, %xmm1 -> %xmm0