aboutsummaryrefslogtreecommitdiff
path: root/llvm/test/CodeGen/X86/stack-protector-3.ll
blob: 59784af7168dbc615fe54cb374324c200a855492 (plain)
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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
; RUN: split-file %s %t
; RUN: cat %t/main.ll %t/a.ll > %t/a2.ll
; RUN: cat %t/main.ll %t/b.ll > %t/b2.ll
; RUN: cat %t/main.ll %t/c.ll > %t/c2.ll
; RUN: cat %t/main.ll %t/d.ll > %t/d2.ll
; RUN: cat %t/main.ll %t/e.ll > %t/e2.ll
; RUN: cat %t/main.ll %t/f.ll > %t/f2.ll
; RUN: cat %t/main.ll %t/g.ll > %t/g2.ll
; RUN: cat %t/main.ll %t/h.ll > %t/h2.ll
; RUN: cat %t/existedGV.ll %t/main.ll %t/h.ll > %t/h3.ll
; RUN: cat %t/main.ll %t/i.ll > %t/i2.ll
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/a2.ll | FileCheck --check-prefix=CHECK-TLS-FS-40 %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/b2.ll | FileCheck --check-prefix=CHECK-TLS-FS-40 %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/c2.ll | FileCheck --check-prefix=CHECK-GLOBAL %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/d2.ll | FileCheck --check-prefix=CHECK-TLS-FS-40 %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/e2.ll | FileCheck --check-prefix=CHECK-GS %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/f2.ll | FileCheck --check-prefix=CHECK-OFFSET %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/g2.ll | FileCheck --check-prefix=CHECK-NEGATIVE-OFFSET %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/h2.ll | FileCheck --check-prefix=CHECK-SYM %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/h3.ll | FileCheck --check-prefix=CHECK-SYMGV %s
; RUN: llc -mtriple=x86_64-pc-linux-gnu -o - < %t/i2.ll | FileCheck --check-prefix=CHECK-SYM2 %s

; CHECK-TLS-FS-40:       movq    %fs:40, %rax
; CHECK-TLS-FS-40:       movq    %fs:40, %rax
; CHECK-TLS-FS-40-NEXT:  cmpq    16(%rsp), %rax
; CHECK-TLS-FS-40-NEXT:  jne     .LBB0_2
; CHECK-TLS-FS-40:       .LBB0_2:
; CHECK-TLS-FS-40-NEXT:  .cfi_def_cfa_offset 32
; CHECK-TLS-FS-40-NEXT:  callq   __stack_chk_fail

; CHECK-GS:       movq    %gs:40, %rax
; CHECK-GS:       movq    %gs:40, %rax
; CHECK-GS-NEXT:  cmpq    16(%rsp), %rax
; CHECK-GS-NEXT:  jne     .LBB0_2
; CHECK-GS:       .LBB0_2:
; CHECK-GS-NEXT:  .cfi_def_cfa_offset 32
; CHECK-GS-NEXT:  callq   __stack_chk_fail

; CHECK-OFFSET:       movq    %fs:20, %rax
; CHECK-OFFSET:       movq    %fs:20, %rax
; CHECK-OFFSET-NEXT:  cmpq    16(%rsp), %rax
; CHECK-OFFSET-NEXT:  jne     .LBB0_2
; CHECK-OFFSET:       .LBB0_2:
; CHECK-OFFSET-NEXT:  .cfi_def_cfa_offset 32
; CHECK-OFFSET-NEXT:  callq   __stack_chk_fail

; CHECK-NEGATIVE-OFFSET:       movl    $4294967276, %eax               # imm = 0xFFFFFFEC
; CHECK-NEGATIVE-OFFSET:       movq    %fs:(%rax), %rcx
; CHECK-NEGATIVE-OFFSET:       movq    %fs:(%rax), %rax
; CHECK-NEGATIVE-OFFSET-NEXT:  cmpq    16(%rsp), %rax
; CHECK-NEGATIVE-OFFSET-NEXT:  jne     .LBB0_2
; CHECK-NEGATIVE-OFFSET:       .LBB0_2:
; CHECK-NEGATIVE-OFFSET-NEXT:  .cfi_def_cfa_offset 32
; CHECK-NEGATIVE-OFFSET-NEXT:  callq   __stack_chk_fail

; CHECK-GLOBAL:       movq    __stack_chk_guard(%rip), %rax
; CHECK-GLOBAL:       movq    __stack_chk_guard(%rip), %rax
; CHECK-GLOBAL-NEXT:  cmpq    16(%rsp), %rax
; CHECK-GLOBAL-NEXT:  jne     .LBB0_2
; CHECK-GLOBAL:       .LBB0_2:
; CHECK-GLOBAL-NEXT:  .cfi_def_cfa_offset 32
; CHECK-GLOBAL-NEXT:  callq   __stack_chk_fail

; CHECK-SYM:         movq    __woof@GOTPCREL(%rip), %rax
; CHECK-SYM-NEXT:    movq    %fs:(%rax), %rcx
; CHECK-SYM-NEXT:    movq    %rcx, 16(%rsp)
; CHECK-SYM:         movq    %fs:(%rax), %rax
; CHECK-SYM-NEXT:    cmpq    16(%rsp), %rax
; CHECK-SYM-NEXT:    jne     .LBB0_2
; CHECK-SYM:         .LBB0_2:
; CHECK-SYM-NEXT:    .cfi_def_cfa_offset 32
; CHECK-SYM-NEXT:    callq   __stack_chk_fail

; CHECK-SYMGV:       movq    __woof(%rip), %rax
; CHECK-SYMGV-NEXT:  movq    %rax, 16(%rsp)
; CHECK-SYMGV:       cmpq    16(%rsp), %rax
; CHECK-SYMGV-NEXT:  jne     .LBB0_2
; CHECK-SYMGV:       .LBB0_2:
; CHECK-SYMGV-NEXT:  .cfi_def_cfa_offset 32
; CHECK-SYMGV-NEXT:  callq   __stack_chk_fail

; CHECK-SYM2:         movq    %fs:__woof(%rip), %rax
; CHECK-SYM2-NEXT:    movq    %rax, 16(%rsp)
; CHECK-SYM2:         movq    %fs:__woof(%rip), %rax
; CHECK-SYM2-NEXT:    cmpq    16(%rsp), %rax
; CHECK-SYM2-NEXT:    jne     .LBB0_2
; CHECK-SYM2:         .LBB0_2:
; CHECK-SYM2-NEXT:    .cfi_def_cfa_offset 32
; CHECK-SYM2-NEXT:    callq   __stack_chk_fai

; ModuleID = 't.c'
;--- existedGV.ll

@__woof = dso_local local_unnamed_addr global ptr null, align 8

;--- main.ll

@.str = private unnamed_addr constant [14 x i8] c"stackoverflow\00", align 1
@a = dso_local local_unnamed_addr global ptr null, align 8

; Function Attrs: nounwind sspreq uwtable writeonly
define dso_local i32 @main() local_unnamed_addr #0 {
entry:
  %array = alloca [5 x i8], align 1
  call void @llvm.lifetime.start.p0(i64 5, ptr nonnull %array) #2
  call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 dereferenceable(14) %array, ptr nonnull align 1 dereferenceable(14) @.str, i64 14, i1 false) #2
  store ptr %array, ptr @a, align 8
  call void @llvm.lifetime.end.p0(i64 5, ptr nonnull %array) #2
  ret i32 0
}

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

attributes #0 = { nounwind sspreq uwtable writeonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind willreturn }
attributes #2 = { nounwind }

;--- a.ll
;--- b.ll
!llvm.module.flags = !{!1}
!1 = !{i32 2, !"stack-protector-guard", !"tls"}
;--- c.ll
!llvm.module.flags = !{!0,!1}
!0 = !{i32 7, !"direct-access-external-data", i32 1}
!1 = !{i32 2, !"stack-protector-guard", !"global"}
;--- d.ll
!llvm.module.flags = !{!1}
!1 = !{i32 2, !"stack-protector-guard-reg", !"fs"}
;--- e.ll
!llvm.module.flags = !{!1}
!1 = !{i32 2, !"stack-protector-guard-reg", !"gs"}
;--- f.ll
!llvm.module.flags = !{!1}
!1 = !{i32 2, !"stack-protector-guard-offset", i32 20}
;--- g.ll
!llvm.module.flags = !{!1}
!1 = !{i32 2, !"stack-protector-guard-offset", i32 -20}
;--- h.ll
!llvm.module.flags = !{!0,!1}
!0 = !{i32 7, !"direct-access-external-data", i32 0}
!1 = !{i32 2, !"stack-protector-guard-symbol", !"__woof"}
;--- i.ll
!llvm.module.flags = !{!0,!1}
!0 = !{i32 7, !"direct-access-external-data", i32 1}
!1 = !{i32 2, !"stack-protector-guard-symbol", !"__woof"}