test/CodeGen/X86/isint.ll

; llvm-as < %s | llc -march=x86 > %t
; not grep cmp %t
; not grep xor %t
; grep jne %t | count 1
; grep jp %t | count 1
; grep setnp %t | count 1
; grep sete %t | count 1
; grep and %t | count 1
; grep cvt %t | count 4

define i32 @isint_return(double %d) nounwind {
  %i = fptosi double %d to i32
  %e = sitofp i32 %i to double
  %c = fcmp oeq double %d, %e
  %z = zext i1 %c to i32
  ret i32 %z
}

declare void @foo()

define void @isint_branch(double %d) nounwind {
  %i = fptosi double %d to i32
  %e = sitofp i32 %i to double
  %c = fcmp oeq double %d, %e
  br i1 %c, label %true, label %false
true:
  call void @foo()
  ret void
false:
  ret void
}