llvm-project/llvm/test/CodeGen/X86/tailcall1.ll

; RUN: llc < %s -march=x86 -tailcallopt | grep TAILCALL | count 4
define fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4) {
entry:
	ret i32 %a3
}

define fastcc i32 @tailcaller(i32 %in1, i32 %in2) {
entry:
	%tmp11 = tail call fastcc i32 @tailcallee( i32 %in1, i32 %in2, i32 %in1, i32 %in2 )		; <i32> [#uses=1]
	ret i32 %tmp11
}

declare fastcc i8* @alias_callee()

define fastcc noalias i8* @noalias_caller() nounwind {
  %p = tail call fastcc i8* @alias_callee()
  ret i8* %p
}

declare fastcc noalias i8* @noalias_callee()

define fastcc i8* @alias_caller() nounwind {
  %p = tail call fastcc noalias i8* @noalias_callee()
  ret i8* %p
}

declare fastcc i32 @i32_callee()

define fastcc i32 @ret_undef() nounwind {
  %p = tail call fastcc i32 @i32_callee()
  ret i32 undef
}