1 ; RUN: opt -S -globalopt < %s | FileCheck %s
2 source_filename = "test.c"
3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-apple-macosx10.12.0"
6 %struct.mystruct = type { i32, i64 }
7 ; Generated at -Os from:
9 ; static struct { int a; char b; } array[2];
10 ; void __attribute__((nodebug)) foo(int in) { array[0].a = in; }
11 ; void __attribute__((nodebug)) bar(int in) { array[1].a = in; }
12 ; int main(int argc, char **argv)
16 ; return array[0].a + array[1].a;
19 %struct.anon = type { i32, i8 }
21 ; This array is first split into two struct, which are then split into their
22 ; elements, of which only .a survives.
23 @array = internal global [2 x %struct.anon] zeroinitializer, align 16, !dbg !0
24 ; CHECK: @array.0.0 = internal unnamed_addr global i32 0, align 16, !dbg ![[EL0:.*]]
25 ; CHECK: @array.1.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL1:.*]]
27 ; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32))
28 ; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "array"
29 ; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 64, 32))
32 ; Function Attrs: nounwind optsize ssp uwtable
33 define void @foo(i32 %in) #0 {
35 store i32 %in, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 0, i32 0), align 16, !tbaa !20
39 ; Function Attrs: nounwind optsize ssp uwtable
40 define void @bar(i32 %in) #0 {
42 store i32 %in, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 1, i32 0), align 8, !tbaa !20
46 ; Function Attrs: nounwind optsize ssp uwtable
47 define i32 @main(i32 %argc, i8** %argv) #0 !dbg !25 {
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 ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 0, i32 0), align 16, !dbg !43, !tbaa !20
62 %5 = load i32, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 1, i32 0), align 8, !dbg !44, !tbaa !20
63 %add = add nsw i32 %4, %5, !dbg !45
64 ret i32 %add, !dbg !46
67 ; Function Attrs: nounwind readnone speculatable
68 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
70 ; Function Attrs: nounwind readnone speculatable
71 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
73 attributes #0 = { nounwind optsize ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
74 attributes #1 = { nounwind readnone speculatable }
75 attributes #2 = { optsize }
78 !llvm.module.flags = !{!15, !16, !17, !18}
81 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
82 !1 = distinct !DIGlobalVariable(name: "array", scope: !2, file: !3, line: 1, type: !6, isLocal: true, isDefinition: true)
83 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 6.0.0 (trunk 309960) (llvm/trunk 309961)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
84 !3 = !DIFile(filename: "test.c", directory: "/")
87 !6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 128, elements: !13)
88 !7 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !3, line: 1, size: 64, elements: !8)
90 !9 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !7, file: !3, line: 1, baseType: !10, size: 32)
91 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
92 !11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !7, file: !3, line: 1, baseType: !12, size: 8, offset: 32)
93 !12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
95 !14 = !DISubrange(count: 2)
96 !15 = !{i32 2, !"Dwarf Version", i32 4}
97 !16 = !{i32 2, !"Debug Info Version", i32 3}
98 !17 = !{i32 1, !"wchar_size", i32 4}
99 !18 = !{i32 7, !"PIC Level", i32 2}
100 !19 = !{!"clang version 6.0.0 (trunk 309960) (llvm/trunk 309961)"}
101 !20 = !{!21, !22, i64 0}
102 !21 = !{!"", !22, i64 0, !23, i64 4}
103 !22 = !{!"int", !23, i64 0}
104 !23 = !{!"omnipotent char", !24, i64 0}
105 !24 = !{!"Simple C/C++ TBAA"}
106 !25 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 4, type: !26, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !30)
107 !26 = !DISubroutineType(types: !27)
108 !27 = !{!10, !10, !28}
109 !28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
110 !29 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
112 !31 = !DILocalVariable(name: "argc", arg: 1, scope: !25, file: !3, line: 4, type: !10)
113 !32 = !DILocalVariable(name: "argv", arg: 2, scope: !25, file: !3, line: 4, type: !28)
114 !33 = !DIExpression()
115 !34 = !DILocation(line: 4, column: 14, scope: !25)
116 !35 = !DILocation(line: 4, column: 27, scope: !25)
117 !36 = !DILocation(line: 6, column: 7, scope: !25)
118 !37 = !{!38, !38, i64 0}
119 !38 = !{!"any pointer", !23, i64 0}
120 !39 = !{!23, !23, i64 0}
121 !40 = !DILocation(line: 6, column: 3, scope: !25)
122 !41 = !DILocation(line: 7, column: 7, scope: !25)
123 !42 = !DILocation(line: 7, column: 3, scope: !25)
124 !43 = !DILocation(line: 8, column: 19, scope: !25)
125 !44 = !DILocation(line: 8, column: 32, scope: !25)
126 !45 = !DILocation(line: 8, column: 21, scope: !25)
127 !46 = !DILocation(line: 8, column: 3, scope: !25)