; PR 1258
; RUN: not llvm-as < %s >/dev/null |& grep {'%0' defined with type 'i1'}

define i32 @test1(i32 %a, i32 %b) {
entry:
  icmp eq i32 %b, %a              ; <i1>:0 [#uses=1]
  zext i1 %0 to i32               ; <i32>:0 [#uses=1]
  ret i32 %0                      ; Invalid Type for %0
}