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1; RUN: opt -safe-stack -safestack-use-pointer-address < %s -S | FileCheck %s
2target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
3target triple = "armv7-pc-linux-android"
4
5; Original C used to generate debug info:
6; char*** addr;
7; char** __safestack_pointer_address() {
8;   return *addr;
9; }
10; void Capture(char*x);
11; void f() { char c[16]; Capture(c); }
12
13; CHECK: !35 = !DILocation(line: 3, column: 11, scope: !17, inlinedAt: !36)
14; CHECK: !36 = distinct !DILocation(line: 6, scope: !27)
15
16@addr = common local_unnamed_addr global i8*** null, align 4, !dbg !0
17
18; Function Attrs: norecurse nounwind readonly safestack
19define i8** @__safestack_pointer_address() local_unnamed_addr #0 !dbg !17 {
20entry:
21  %0 = load i8***, i8**** @addr, align 4, !dbg !20, !tbaa !21
22  %1 = load i8**, i8*** %0, align 4, !dbg !25, !tbaa !21
23  ret i8** %1, !dbg !26
24}
25
26; Function Attrs: nounwind safestack
27define void @f() local_unnamed_addr #1 !dbg !27 {
28entry:
29  %c = alloca [16 x i8], align 1
30  %0 = getelementptr inbounds [16 x i8], [16 x i8]* %c, i32 0, i32 0, !dbg !35
31  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0) #5, !dbg !35
32  call void @llvm.dbg.declare(metadata [16 x i8]* %c, metadata !31, metadata !DIExpression()), !dbg !36
33  call void @Capture(i8* nonnull %0) #5, !dbg !37
34  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0) #5, !dbg !38
35  ret void, !dbg !38
36}
37
38; Function Attrs: argmemonly nounwind
39declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2
40
41; Function Attrs: nounwind readnone speculatable
42declare void @llvm.dbg.declare(metadata, metadata, metadata) #3
43
44declare void @Capture(i8*) local_unnamed_addr #4
45
46; Function Attrs: argmemonly nounwind
47declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2
48
49attributes #0 = { norecurse nounwind readonly safestack "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "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"="generic" "target-features"="+armv7-a,+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" }
50attributes #1 = { nounwind safestack "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "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"="generic" "target-features"="+armv7-a,+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" }
51attributes #2 = { argmemonly nounwind }
52attributes #3 = { nounwind readnone speculatable }
53attributes #4 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "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"="generic" "target-features"="+armv7-a,+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" }
54attributes #5 = { nounwind }
55
56!llvm.dbg.cu = !{!2}
57!llvm.module.flags = !{!11, !12, !13, !14, !15}
58!llvm.ident = !{!16}
59
60!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
61!1 = distinct !DIGlobalVariable(name: "addr", scope: !2, file: !6, line: 1, type: !7, isLocal: false, isDefinition: true)
62!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
63!3 = !DIFile(filename: "-", directory: "/")
64!4 = !{}
65!5 = !{!0}
66!6 = !DIFile(filename: "<stdin>", directory: "/")
67!7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 32)
68!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32)
69!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32)
70!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_unsigned_char)
71!11 = !{i32 2, !"Dwarf Version", i32 4}
72!12 = !{i32 2, !"Debug Info Version", i32 3}
73!13 = !{i32 1, !"wchar_size", i32 4}
74!14 = !{i32 1, !"min_enum_size", i32 4}
75!15 = !{i32 7, !"PIC Level", i32 1}
76!16 = !{!"clang"}
77!17 = distinct !DISubprogram(name: "__safestack_pointer_address", scope: !6, file: !6, line: 2, type: !18, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !2, retainedNodes: !4)
78!18 = !DISubroutineType(types: !19)
79!19 = !{!8}
80!20 = !DILocation(line: 3, column: 11, scope: !17)
81!21 = !{!22, !22, i64 0}
82!22 = !{!"any pointer", !23, i64 0}
83!23 = !{!"omnipotent char", !24, i64 0}
84!24 = !{!"Simple C/C++ TBAA"}
85!25 = !DILocation(line: 3, column: 10, scope: !17)
86!26 = !DILocation(line: 3, column: 3, scope: !17)
87!27 = distinct !DISubprogram(name: "f", scope: !6, file: !6, line: 6, type: !28, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, retainedNodes: !30)
88!28 = !DISubroutineType(types: !29)
89!29 = !{null}
90!30 = !{!31}
91!31 = !DILocalVariable(name: "c", scope: !27, file: !6, line: 6, type: !32)
92!32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, size: 128, elements: !33)
93!33 = !{!34}
94!34 = !DISubrange(count: 16)
95!35 = !DILocation(line: 6, column: 12, scope: !27)
96!36 = !DILocation(line: 6, column: 17, scope: !27)
97!37 = !DILocation(line: 6, column: 24, scope: !27)
98!38 = !DILocation(line: 6, column: 36, scope: !27)
99