1; RUN: llc -mtriple=x86_64-linux-gnu %s -o - | FileCheck %s 2 3declare swifttailcc void @callee([6 x i64], i64, i64) 4 5@var = external global ptr 6 7define swifttailcc void @caller(i64 %n) { 8; CHECK-LABEL: caller: 9; CHECK: subq $16, %rsp 10; CHECK: pushq %rbp 11; CHECK: movq %rsp, %rbp 12; CHECK: pushq %rbx 13; CHECK: andq $-32, %rsp 14; [... don't really care what happens to rsp to allocate %ptr ...] 15; CHECK: movq 24(%rbp), [[RETADDR:%.*]] 16; CHECK: movq [[RETADDR]], 8(%rbp) 17; CHECK: movq $42, 16(%rbp) 18; CHECK: movq $0, 24(%rbp) 19; CHECK: leaq -8(%rbp), %rsp 20; CHECK: popq %rbx 21; CHECK: popq %rbp 22; CHECK: jmp callee 23 24 call void asm sideeffect "", "~{rbx}"() 25 %ptr = alloca i8, i64 %n, align 32 26 store ptr %ptr, ptr @var 27 tail call swifttailcc void @callee([6 x i64] undef, i64 42, i64 0) 28 ret void 29} 30