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1; RUN: opt -S -globalopt < %s | FileCheck %s
2source_filename = "test.c"
3target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4target triple = "x86_64-apple-macosx10.12.0"
5
6%struct.mystruct = type { i32, i64 }
7; Generated at -Os from:
8;
9; static struct mystruct {
10;     int a;
11;     long long int b;
12; } static_struct;
13; void __attribute__((nodebug)) foo(int in) { static_struct.a = in; }
14; void __attribute__((nodebug)) bar(int in) { static_struct.b = in; }
15; int main(int argc, char **argv)
16; {
17;     foo(argv[0][1]);
18;     bar(argv[0][1]);
19;     return static_struct.a + static_struct.b;
20; }
21
22; CHECK: @static_struct.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL0:.*]]
23; CHECK: @static_struct.1 = internal unnamed_addr global i64 0, align 8, !dbg ![[EL1:.*]]
24
25; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32))
26; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "static_struct"
27; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 64, 64))
28
29@static_struct = internal global %struct.mystruct zeroinitializer, align 8, !dbg !0
30
31; Function Attrs: nounwind optsize ssp uwtable
32define void @foo(i32 %in) #0 {
33entry:
34  store i32 %in, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !tbaa !17
35  ret void
36}
37
38; Function Attrs: nounwind optsize ssp uwtable
39define void @bar(i32 %in) #0 {
40entry:
41  %conv = sext i32 %in to i64
42  store i64 %conv, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !tbaa !23
43  ret void
44}
45
46; Function Attrs: nounwind optsize ssp uwtable
47define i32 @main(i32 %argc, i8** %argv) #0 !dbg !24 {
48entry:
49  call void @llvm.dbg.value(metadata i32 %argc, metadata !31, metadata !33), !dbg !34
50  call void @llvm.dbg.value(metadata i8** %argv, metadata !32, metadata !33), !dbg !35
51  %0 = load i8*, i8** %argv, align 8, !dbg !36, !tbaa !37
52  %arrayidx1 = getelementptr inbounds i8, i8* %0, i64 1, !dbg !36
53  %1 = load i8, i8* %arrayidx1, align 1, !dbg !36, !tbaa !39
54  %conv = sext i8 %1 to i32, !dbg !36
55  call void @foo(i32 %conv) #2, !dbg !40
56  %2 = load i8*, i8** %argv, align 8, !dbg !41, !tbaa !37
57  %arrayidx3 = getelementptr inbounds i8, i8* %2, i64 1, !dbg !41
58  %3 = load i8, i8* %arrayidx3, align 1, !dbg !41, !tbaa !39
59  %conv4 = sext i8 %3 to i32, !dbg !41
60  call void @bar(i32 %conv4) #2, !dbg !42
61  %4 = load i32, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !dbg !43, !tbaa !17
62  %conv5 = sext i32 %4 to i64, !dbg !44
63  %5 = load i64, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !dbg !45, !tbaa !23
64  %add = add nsw i64 %conv5, %5, !dbg !46
65  %conv6 = trunc i64 %add to i32, !dbg !44
66  ret i32 %conv6, !dbg !47
67}
68
69; Function Attrs: nounwind readnone speculatable
70declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
71
72; Function Attrs: nounwind readnone speculatable
73declare void @llvm.dbg.value(metadata, metadata, metadata) #1
74
75attributes #0 = { nounwind optsize ssp uwtable }
76attributes #1 = { nounwind readnone speculatable }
77attributes #2 = { optsize }
78
79!llvm.dbg.cu = !{!2}
80!llvm.module.flags = !{!12, !13, !14, !15}
81!llvm.ident = !{!16}
82
83!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
84!1 = distinct !DIGlobalVariable(name: "static_struct", scope: !2, file: !3, line: 4, type: !6, isLocal: true, isDefinition: true)
85!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
86!3 = !DIFile(filename: "test.c", directory: "/")
87!4 = !{}
88!5 = !{!0}
89!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mystruct", file: !3, line: 1, size: 128, elements: !7)
90!7 = !{!8, !10}
91!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 32)
92!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
93!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !11, size: 64, offset: 64)
94!11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
95!12 = !{i32 2, !"Dwarf Version", i32 4}
96!13 = !{i32 2, !"Debug Info Version", i32 3}
97!14 = !{i32 1, !"wchar_size", i32 4}
98!15 = !{i32 7, !"PIC Level", i32 2}
99!16 = !{!"clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)"}
100!17 = !{!18, !19, i64 0}
101!18 = !{!"mystruct", !19, i64 0, !22, i64 8}
102!19 = !{!"int", !20, i64 0}
103!20 = !{!"omnipotent char", !21, i64 0}
104!21 = !{!"Simple C/C++ TBAA"}
105!22 = !{!"long long", !20, i64 0}
106!23 = !{!18, !22, i64 8}
107!24 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !25, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !30)
108!25 = !DISubroutineType(types: !26)
109!26 = !{!9, !9, !27}
110!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
111!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
112!29 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
113!30 = !{!31, !32}
114!31 = !DILocalVariable(name: "argc", arg: 1, scope: !24, file: !3, line: 7, type: !9)
115!32 = !DILocalVariable(name: "argv", arg: 2, scope: !24, file: !3, line: 7, type: !27)
116!33 = !DIExpression()
117!34 = !DILocation(line: 7, column: 14, scope: !24)
118!35 = !DILocation(line: 7, column: 27, scope: !24)
119!36 = !DILocation(line: 9, column: 9, scope: !24)
120!37 = !{!38, !38, i64 0}
121!38 = !{!"any pointer", !20, i64 0}
122!39 = !{!20, !20, i64 0}
123!40 = !DILocation(line: 9, column: 5, scope: !24)
124!41 = !DILocation(line: 10, column: 9, scope: !24)
125!42 = !DILocation(line: 10, column: 5, scope: !24)
126!43 = !DILocation(line: 11, column: 26, scope: !24)
127!44 = !DILocation(line: 11, column: 12, scope: !24)
128!45 = !DILocation(line: 11, column: 44, scope: !24)
129!46 = !DILocation(line: 11, column: 28, scope: !24)
130!47 = !DILocation(line: 11, column: 5, scope: !24)
131