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 21declare fastcc i32 @tailcallee(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6, i32 %a, i32 %b) nounwind 22 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, %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