aboutsummaryrefslogtreecommitdiff
path: root/llvm/test/CodeGen/X86/lifetime-alias.ll
blob: 3efaccba1b63d5c06f0da853055e4fe5162f06d2 (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
153
154
155
156
157
158
159
160
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu  | FileCheck %s -check-prefix=CHECK

source_filename = "test_case.cc"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::__3::basic_string" = type { %"class.std::__3::__compressed_pair" }
%"class.std::__3::__compressed_pair" = type { %"struct.std::__3::__compressed_pair_elem" }
%"struct.std::__3::__compressed_pair_elem" = type { %"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__rep" }
%"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__rep" = type { %union.anon }
%union.anon = type { %"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__long" }
%"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__long" = type { ptr, i64, i64 }
%struct.Agg = type { %"class.std::__3::basic_string", %"class.std::__3::basic_string" }
%"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__short" = type { [23 x i8], %struct.anon }
%struct.anon = type { i8 }

@do_not_optimize = dso_local global ptr null, align 8
@.str = private unnamed_addr constant [12 x i8] c"The Culture\00", align 1
@.str.1 = private unnamed_addr constant [22 x i8] c"FunnyItWorkedLastTime\00", align 1
@.str.2 = private unnamed_addr constant [19 x i8] c"agg.a2_[16] == 't'\00", align 1
@.str.3 = private unnamed_addr constant [13 x i8] c"test_case.cc\00", align 1
@__PRETTY_FUNCTION__.main = private unnamed_addr constant [11 x i8] c"int main()\00", align 1

; Function Attrs: norecurse uwtable
define i8 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: main:
; CHECK:       # %bb.0: # %_ZNSt3__312basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED2Ev.exit50
; CHECK-NEXT:    pushq %rax
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    movaps {{.*#+}} xmm0 = [97,97,97,97,97,97,97,97,97,97,97,97,97,97,97,97]
; CHECK-NEXT:    movaps %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movabsq $7016996765293437281, %rax # imm = 0x6161616161616161
; CHECK-NEXT:    movq %rax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movw $5632, {{[0-9]+}}(%rsp) # imm = 0x1600
; CHECK-NEXT:    xorps %xmm0, %xmm0
; CHECK-NEXT:    movaps %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movb $11, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movabsq $8389209137051166804, %rax # imm = 0x746C754320656854
; CHECK-NEXT:    movq %rax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movl $1701999988, -{{[0-9]+}}(%rsp) # imm = 0x65727574
; CHECK-NEXT:    movb $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movaps %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movb $21, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movabsq $7308613581744070988, %rax # imm = 0x656D69547473614C
; CHECK-NEXT:    movq %rax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movups .L.str.1(%rip), %xmm1
; CHECK-NEXT:    movaps %xmm1, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movb $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    movq %rax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    movq %rax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movzwl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT:    movb %al, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT:    movb %al, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movaps %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    movq %rax, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movaps -{{[0-9]+}}(%rsp), %xmm1
; CHECK-NEXT:    movups %xmm1, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movaps %xmm0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    movq $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    leaq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    movq %rax, do_not_optimize(%rip)
; CHECK-NEXT:    leaq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    movq %rax, do_not_optimize(%rip)
; CHECK-NEXT:    cmpb $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT:    jns .LBB0_1
; CHECK-NEXT:  # %bb.2: # %_ZNSt3__312basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED2Ev.exit50
; CHECK-NEXT:    movq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:    jmp .LBB0_3
; CHECK-NEXT:  .LBB0_1:
; CHECK-NEXT:    leaq -{{[0-9]+}}(%rsp), %rax
; CHECK-NEXT:  .LBB0_3: # %_ZNSt3__312basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED2Ev.exit50
; CHECK-NEXT:    movzbl 16(%rax), %eax
; CHECK-NEXT:    popq %rcx
; CHECK-NEXT:    .cfi_def_cfa_offset 8
; CHECK-NEXT:    retq
_ZNSt3__312basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED2Ev.exit50:
  %padding = alloca %"class.std::__3::basic_string", align 8
  %agg = alloca %struct.Agg, align 8
  %agg.tmp = alloca %"class.std::__3::basic_string", align 8
  %agg.tmp1 = alloca %"class.std::__3::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %padding) #4
  %__size_.i23.i.i = getelementptr inbounds %"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__short", ptr %padding, i64 0, i32 1, i32 0
  store i8 22, ptr %__size_.i23.i.i, align 1, !tbaa !2
  call void @llvm.memset.p0.i64(ptr nonnull align 8 %padding, i8 97, i64 22, i1 false) #4
  %arrayidx.i.i = getelementptr inbounds i8, ptr %padding, i64 22
  store i8 0, ptr %arrayidx.i.i, align 2, !tbaa !2
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %agg) #4
  call void @llvm.memset.p0.i64(ptr nonnull align 8 %agg.tmp, i8 0, i64 24, i1 false) #4
  %__size_.i23.i.i11 = getelementptr inbounds %"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__short", ptr %agg.tmp, i64 0, i32 1, i32 0
  store i8 11, ptr %__size_.i23.i.i11, align 1, !tbaa !2
  call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 8 %agg.tmp, ptr align 1 @.str, i64 11, i1 false) #4
  %arrayidx.i.i12 = getelementptr inbounds i8, ptr %agg.tmp, i64 11
  store i8 0, ptr %arrayidx.i.i12, align 1, !tbaa !2
  call void @llvm.memset.p0.i64(ptr nonnull align 8 %agg.tmp1, i8 0, i64 24, i1 false) #4
  %__size_.i23.i.i28 = getelementptr inbounds %"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__short", ptr %agg.tmp1, i64 0, i32 1, i32 0
  store i8 21, ptr %__size_.i23.i.i28, align 1, !tbaa !2
  call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 8 %agg.tmp1, ptr align 1 @.str.1, i64 21, i1 false) #4
  %arrayidx.i.i34 = getelementptr inbounds i8, ptr %agg.tmp1, i64 21
  store i8 0, ptr %arrayidx.i.i34, align 1, !tbaa !2
  call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 8 %agg, ptr nonnull align 8 %agg.tmp, i64 24, i1 false) #4
  call void @llvm.memset.p0.i64(ptr nonnull align 8 %agg.tmp, i8 0, i64 24, i1 false) #4
  %a2_.i = getelementptr inbounds %struct.Agg, ptr %agg, i64 0, i32 1
  call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 8 %a2_.i, ptr nonnull align 8 %agg.tmp1, i64 24, i1 false) #4
  call void @llvm.memset.p0.i64(ptr nonnull align 8 %agg.tmp1, i8 0, i64 24, i1 false) #4
  store volatile ptr %padding, ptr @do_not_optimize, align 8, !tbaa !5
  store volatile ptr %agg, ptr @do_not_optimize, align 8, !tbaa !5
  %__size_.i.i.i51 = getelementptr inbounds %"struct.std::__3::basic_string<char, std::__3::char_traits<char>, std::__3::allocator<char> >::__short", ptr %a2_.i, i64 0, i32 1, i32 0
  %0 = load i8, ptr %__size_.i.i.i51, align 1, !tbaa !2
  %tobool.i.i.i = icmp slt i8 %0, 0
  %1 = load ptr, ptr %a2_.i, align 8
  %cond.i.i = select i1 %tobool.i.i.i, ptr %1, ptr %a2_.i
  %add.ptr.i = getelementptr inbounds i8, ptr %cond.i.i, i64 16
  %2 = load i8, ptr %add.ptr.i, align 1, !tbaa !2
  ret i8 %2
}

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

declare dso_local i32 @__gxx_personality_v0(...)

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

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

; Function Attrs: argmemonly nounwind
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { norecurse uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind }
attributes #2 = { noreturn nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { nobuiltin nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #4 = { nounwind }
attributes #5 = { noreturn nounwind }
attributes #6 = { builtin nounwind }

!llvm.module.flags = !{!0}
!llvm.ident = !{!1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 9.0.0 (https://git.llvm.org/git/clang.git 6bb42abb270b5879a3acd289ca42341115a3cb46) (https://git.llvm.org/git/llvm.git ab39cf6afa9acdc108d16e7194a0d82619b044d6)"}
!2 = !{!3, !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C++ TBAA"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !3, i64 0}