1# RUN: llc -mtriple=aarch64-arm-none-eabi -run-pass=prologepilog \
2# RUN: -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
3
4# Check that we save LR to a callee-saved register when possible.
5# foo() should use a callee-saved register. However, bar() should not.
6--- |
7
8  define void @foo() #0 {
9    ret void
10  }
11
12  define void @bar() #0 {
13    ret void
14  }
15
16  attributes #0 = { nounwind "sign-return-address"="non-leaf" "sign-return-address-key"="b_key" minsize noinline noredzone "frame-pointer"="all" }
17...
18---
19# CHECK-LABEL:   name:            foo
20# CHECK:         bb.0:
21# CHECK:            frame-setup EMITBKEY
22# CHECK-NEXT:       frame-setup PACIBSP
23# CHECK-NEXT:       frame-setup CFI_INSTRUCTION negate_ra_sign_state
24# CHECK:        bb.1:
25# CHECK:            BL @[[OUTLINED_FUNCTION:OUTLINED_FUNCTION_[0-9]+]]
26# CHECK:        bb.2:
27# CHECK:            BL @[[OUTLINED_FUNCTION]]
28# CHECK:        bb.3:
29# CHECK:            BL @[[OUTLINED_FUNCTION]]
30# CHECK:        bb.4:
31# CHECK:            BL @[[OUTLINED_FUNCTION]]
32# CHECK:        bb.5:
33# CHECK:            frame-destroy AUTIBSP
34# CHECK-NEXT:       RET
35name:            foo
36tracksRegLiveness: true
37fixedStack:
38body:             |
39  bb.0:
40    $x25 = ORRXri $xzr, 1
41    $lr = ORRXri $xzr, 1
42  bb.1:
43    liveins: $lr, $w9
44    $w9 = ORRWri $wzr, 1
45    $w9 = ORRWri $wzr, 1
46    $w9 = ORRWri $wzr, 1
47    $w9 = ORRWri $wzr, 1
48    $w9 = ORRWri $wzr, 1
49    $w9 = ORRWri $wzr, 2
50  bb.2:
51    liveins: $lr, $w9
52    $w9 = ORRWri $wzr, 1
53    $w9 = ORRWri $wzr, 1
54    $w9 = ORRWri $wzr, 1
55    $w9 = ORRWri $wzr, 1
56    $w9 = ORRWri $wzr, 1
57    $w9 = ORRWri $wzr, 2
58  bb.3:
59    liveins: $lr, $w9
60    $w9 = ORRWri $wzr, 1
61    $w9 = ORRWri $wzr, 1
62    $w9 = ORRWri $wzr, 1
63    $w9 = ORRWri $wzr, 1
64    $w9 = ORRWri $wzr, 1
65    $w9 = ORRWri $wzr, 2
66  bb.4:
67    liveins: $lr, $w9
68    $w9 = ORRWri $wzr, 1
69    $w9 = ORRWri $wzr, 1
70    $w9 = ORRWri $wzr, 1
71    $w9 = ORRWri $wzr, 1
72    $w9 = ORRWri $wzr, 1
73    $w9 = ORRWri $wzr, 2
74  bb.5:
75    liveins: $w9
76    RET undef $lr
77
78...
79---
80# CHECK:         name:            bar
81# CHECK:          bb.0:
82# CHECK-NOT:        OUTLINED_FUNCTION_
83# CHECK:          bb.1:
84# CHECK-NOT:        OUTLINED_FUNCTION_
85# CHECK:          bb.2:
86# CHECK-NOT:        OUTLINED_FUNCTION_
87# CHECK:          bb.3:
88# CHECK-NOT:        OUTLINED_FUNCTION_
89# CHECK:            RET
90name:            bar
91tracksRegLiveness: true
92body:             |
93  bb.0:
94    liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
95    $w10 = ORRWri $wzr, 1
96    $w10 = ORRWri $wzr, 1
97    $w10 = ORRWri $wzr, 1
98    $w10 = ORRWri $wzr, 1
99    $w10 = ORRWri $wzr, 1
100    $w12 = ORRWri $wzr, 2
101  bb.1:
102    liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
103    $w10 = ORRWri $wzr, 1
104    $w10 = ORRWri $wzr, 1
105    $w10 = ORRWri $wzr, 1
106    $w10 = ORRWri $wzr, 1
107    $w10 = ORRWri $wzr, 1
108    $w12 = ORRWri $wzr, 2
109  bb.2:
110    liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
111    $w10 = ORRWri $wzr, 1
112    $w10 = ORRWri $wzr, 1
113    $w10 = ORRWri $wzr, 1
114    $w10 = ORRWri $wzr, 1
115    $w10 = ORRWri $wzr, 1
116    $w12 = ORRWri $wzr, 2
117  bb.3:
118    liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
119    RET undef $lr
120
121# CHECK:         name:            [[OUTLINED_FUNCTION]]
122# CHECK:         body:
123# CHECK-NEXT:     bb.0:
124# CHECK-NOT:        frame-setup EMITBKEY
125# CHECK-NOT:        frame-setup PACI{{[A,B]]}}SP
126# CHECK-NOT:        frame-setup CFI_INSTRUCTION negate_ra_sign_state
127# CHECK-NOT:        frame-destroy AUTI{{[A,B]]}}SP
128