1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
; RUN: llc -mtriple arm64e-apple-darwin -mattr=+bti -asm-verbose=false \
; RUN: -o - %s | FileCheck %s --check-prefixes=DARWIN,CHECK
; RUN: llc -mtriple arm64e-apple-darwin -mattr=+bti -global-isel -asm-verbose=false \
; RUN: -o - %s | FileCheck %s --check-prefixes=DARWIN,CHECK
; RUN: llc -mtriple arm64e-apple-darwin -mattr=+bti -fast-isel -asm-verbose=false \
; RUN: -o - %s | FileCheck %s --check-prefixes=DARWIN,CHECK
; RUN: llc -mtriple aarch64-linux-gnu -mattr=+bti -mattr=+pauth -asm-verbose=false \
; RUN: -o - %s | FileCheck %s --check-prefixes=ELF,CHECK
; RUN: llc -mtriple aarch64-linux-gnu -mattr=+bti -mattr=+pauth -global-isel -asm-verbose=false \
; RUN: -o - %s | FileCheck %s --check-prefixes=ELF,CHECK
; RUN: llc -mtriple aarch64-linux-gnu -mattr=+bti -mattr=+pauth -fast-isel -asm-verbose=false \
; RUN: -o - %s | FileCheck %s --check-prefixes=ELF,CHECK
; ptrauth tail-calls can only use x16/x17 with BTI.
; CHECK-LABEL: test_tailcall_ia_0:
; CHECK-NEXT: bti c
; CHECK-NEXT: mov x16, x0
; CHECK-NEXT: braaz x16
define i32 @test_tailcall_ia_0(i32 ()* %arg0) #0 {
%tmp0 = tail call i32 %arg0() [ "ptrauth"(i32 0, i64 0) ]
ret i32 %tmp0
}
; CHECK-LABEL: test_tailcall_ib_0:
; CHECK-NEXT: bti c
; CHECK-NEXT: mov x16, x0
; CHECK-NEXT: brabz x16
define i32 @test_tailcall_ib_0(i32 ()* %arg0) #0 {
%tmp0 = tail call i32 %arg0() [ "ptrauth"(i32 1, i64 0) ]
ret i32 %tmp0
}
; CHECK-LABEL: test_tailcall_ia_imm:
; CHECK-NEXT: bti c
; CHECK-NEXT: mov x16, x0
; CHECK-NEXT: mov x17, #42
; CHECK-NEXT: braa x16, x17
define i32 @test_tailcall_ia_imm(i32 ()* %arg0) #0 {
%tmp0 = tail call i32 %arg0() [ "ptrauth"(i32 0, i64 42) ]
ret i32 %tmp0
}
; CHECK-LABEL: test_tailcall_ib_imm:
; CHECK-NEXT: bti c
; CHECK-NEXT: mov x16, x0
; CHECK-NEXT: mov x17, #42
; CHECK-NEXT: brab x16, x17
define i32 @test_tailcall_ib_imm(i32 ()* %arg0) #0 {
%tmp0 = tail call i32 %arg0() [ "ptrauth"(i32 1, i64 42) ]
ret i32 %tmp0
}
; CHECK-LABEL: test_tailcall_ia_var:
; DARWIN-NEXT: bti c
; DARWIN-NEXT: mov x16, x0
; DARWIN-NEXT: ldr x0, [x1]
; DARWIN-NEXT: braa x16, x0
; ELF-NEXT: bti c
; ELF-NEXT: ldr x1, [x1]
; ELF-NEXT: mov x16, x0
; ELF-NEXT: braa x16, x1
define i32 @test_tailcall_ia_var(i32 ()* %arg0, i64* %arg1) #0 {
%tmp0 = load i64, i64* %arg1
%tmp1 = tail call i32 %arg0() [ "ptrauth"(i32 0, i64 %tmp0) ]
ret i32 %tmp1
}
; CHECK-LABEL: test_tailcall_ib_var:
; DARWIN-NEXT: bti c
; DARWIN-NEXT: mov x16, x0
; DARWIN-NEXT: ldr x0, [x1]
; DARWIN-NEXT: brab x16, x0
; ELF-NEXT: bti c
; ELF-NEXT: ldr x1, [x1]
; ELF-NEXT: mov x16, x0
; ELF-NEXT: brab x16, x1
define i32 @test_tailcall_ib_var(i32 ()* %arg0, i64* %arg1) #0 {
%tmp0 = load i64, i64* %arg1
%tmp1 = tail call i32 %arg0() [ "ptrauth"(i32 1, i64 %tmp0) ]
ret i32 %tmp1
}
; CHECK-LABEL: test_tailcall_ia_arg:
; CHECK-NEXT: bti c
; CHECK-NEXT: mov x16, x0
; CHECK-NEXT: braa x16, x1
define i32 @test_tailcall_ia_arg(i32 ()* %arg0, i64 %arg1) #0 {
%tmp0 = tail call i32 %arg0() [ "ptrauth"(i32 0, i64 %arg1) ]
ret i32 %tmp0
}
; CHECK-LABEL: test_tailcall_ib_arg:
; CHECK-NEXT: bti c
; CHECK-NEXT: mov x16, x0
; CHECK-NEXT: brab x16, x1
define i32 @test_tailcall_ib_arg(i32 ()* %arg0, i64 %arg1) #0 {
%tmp0 = tail call i32 %arg0() [ "ptrauth"(i32 1, i64 %arg1) ]
ret i32 %tmp0
}
; CHECK-LABEL: test_tailcall_ia_arg_ind:
; CHECK-NEXT: bti c
; CHECK-NEXT: ldr x16, [x0]
; CHECK-NEXT: braa x16, x1
define i32 @test_tailcall_ia_arg_ind(i32 ()** %arg0, i64 %arg1) #0 {
%tmp0 = load i32 ()*, i32 ()** %arg0
%tmp1 = tail call i32 %tmp0() [ "ptrauth"(i32 0, i64 %arg1) ]
ret i32 %tmp1
}
; CHECK-LABEL: test_tailcall_ib_arg_ind:
; CHECK-NEXT: bti c
; CHECK-NEXT: ldr x16, [x0]
; CHECK-NEXT: brab x16, x1
define i32 @test_tailcall_ib_arg_ind(i32 ()** %arg0, i64 %arg1) #0 {
%tmp0 = load i32 ()*, i32 ()** %arg0
%tmp1 = tail call i32 %tmp0() [ "ptrauth"(i32 1, i64 %arg1) ]
ret i32 %tmp1
}
attributes #0 = { nounwind "branch-target-enforcement"="true" }
|
