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      1 ; RUN: llc < %s -tailcallopt -mcpu=generic -mtriple=x86_64-linux -post-RA-scheduler=true | FileCheck %s
      2 ; RUN: llc < %s -tailcallopt -mcpu=generic -mtriple=x86_64-win32 -post-RA-scheduler=true | FileCheck %s
      3 
      4 ; FIXME: Redundant unused stack allocation could be eliminated.
      5 ; CHECK: subq  ${{24|72|80}}, %rsp
      6 
      7 ; Check that lowered arguments on the stack do not overwrite each other.
      8 ; Add %in1 %p1 to a different temporary register (%eax).
      9 ; CHECK: movl  [[A1:32|144]](%rsp), [[R1:%e..]]
     10 ; Move param %in1 to temp register (%r10d).
     11 ; CHECK: movl  [[A2:40|152]](%rsp), [[R2:%[a-z0-9]+]]
     12 ; Add %in1 %p1 to a different temporary register (%eax).
     13 ; CHECK: addl {{%edi|%ecx}}, [[R1]]
     14 ; Move param %in2 to stack.
     15 ; CHECK: movl  [[R2]], [[A1]](%rsp)
     16 ; Move result of addition to stack.
     17 ; CHECK: movl  [[R1]], [[A2]](%rsp)
     18 ; Eventually, do a TAILCALL
     19 ; CHECK: TAILCALL
     20 
     21 declare fastcc i32 @tailcallee(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6, i32 %a, i32 %b) nounwind
     22 
     23 define fastcc i32 @tailcaller(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6, i32 %in1, i32 %in2) nounwind {
     24 entry:
     25         %tmp = add i32 %in1, %p1
     26         %retval = tail call fastcc i32 @tailcallee(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6, i32 %in2,i32 %tmp)
     27         ret i32 %retval
     28 }
     29