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1; RUN: llc < %s -tailcallopt -mcpu=generic -mtriple=x86_64-linux -post-RA-scheduler=true | FileCheck %s2; RUN: llc < %s -tailcallopt -mcpu=generic -mtriple=x86_64-win32 -post-RA-scheduler=true | FileCheck %s3 4; FIXME: Redundant unused stack allocation could be eliminated.5; CHECK: subq ${{24|72|80}}, %rsp6 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..|%r.*d]]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-DAG: movl [[R2]], [[A1]](%rsp)16; Move result of addition to stack.17; CHECK-DAG: movl [[R1]], [[A2]](%rsp)18; Eventually, do a TAILCALL19; CHECK: TAILCALL20 21declare fastcc i32 @tailcallee(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6, i32 %a, i32 %b) nounwind22 23define fastcc i32 @tailcaller(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6, i32 %in1, i32 %in2) nounwind {24entry:25 %tmp = add i32 %in1, %p126 %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 %retval28}29