1; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -O0 | FileCheck %s
2; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -O0 -disable-fp-elim | FileCheck -check-prefix CHECK-WITHFP %s
3
4; Make sure a reasonably sane prologue and epilogue are
5; generated. This test is not robust in the face of an frame-handling
6; evolving, but still has value for unrelated changes, I
7; believe.
8;
9; In particular, it will fail when ldp/stp are used for frame setup,
10; when FP-elim is implemented, and when addressing from FP is
11; implemented.
12
13@var = global i64 0
14@local_addr = global i64* null
15
16declare void @foo()
17
18define void @trivial_func() nounwind {
19; CHECK: trivial_func: // @trivial_func
20; CHECK-NEXT: // BB#0
21; CHECK-NEXT: ret
22
23  ret void
24}
25
26define void @trivial_fp_func() {
27; CHECK-WITHFP-LABEL: trivial_fp_func:
28
29; CHECK-WITHFP: sub sp, sp, #16
30; CHECK-WITHFP: stp x29, x30, [sp]
31; CHECK-WITHFP-NEXT: mov x29, sp
32
33; Dont't really care, but it would be a Bad Thing if this came after the epilogue.
34; CHECK: bl foo
35  call void @foo()
36  ret void
37
38; CHECK-WITHFP: ldp x29, x30, [sp]
39; CHECK-WITHFP: add sp, sp, #16
40
41; CHECK-WITHFP: ret
42}
43
44define void @stack_local() {
45  %local_var = alloca i64
46; CHECK-LABEL: stack_local:
47; CHECK: sub sp, sp, #16
48
49  %val = load i64* @var
50  store i64 %val, i64* %local_var
51; CHECK: str {{x[0-9]+}}, [sp, #{{[0-9]+}}]
52
53  store i64* %local_var, i64** @local_addr
54; CHECK: add {{x[0-9]+}}, sp, #{{[0-9]+}}
55
56  ret void
57}
58