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1; RUN: opt -S -globalopt < %s | FileCheck %s
2source_filename = "array.c"
3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4target triple = "x86_64-unknown-linux-gnu"
5
6%struct.mystruct = type { i32, i64 }
7
8; Generated from:
9;
10; static long double array[2];
11; void __attribute__((nodebug)) foo(int in) { array[0] = in; }
12; void __attribute__((nodebug)) bar(int in) { array[1] = in; }
13; int main(int argc, char **argv)
14; {
15;   foo(argv[0][1]);
16;   bar(argv[0][1]);
17;   return (array[0] + array[1]) > 0;
18; }
19;
20; using clang -O0 -g2 -S -emit-llvm
21
22@array = internal global [2 x x86_fp80] zeroinitializer, align 16, !dbg !0
23
24; CHECK: @array.0 = internal unnamed_addr global x86_fp80 0xK00000000000000000000, align 16, !dbg ![[EL0:.*]]
25; CHECK: @array.1 = internal unnamed_addr global x86_fp80 0xK00000000000000000000, align 16, !dbg ![[EL1:.*]]
26;
27; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 128))
28; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "array"
29; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 128, 128))
30
31; Function Attrs: noinline nounwind optnone uwtable
32define void @foo(i32 %in) #0 {
33entry:
34  %in.addr = alloca i32, align 4
35  store i32 %in, i32* %in.addr, align 4
36  %0 = load i32, i32* %in.addr, align 4
37  %conv = sitofp i32 %0 to x86_fp80
38  store x86_fp80 %conv, x86_fp80* getelementptr inbounds ([2 x x86_fp80], [2 x x86_fp80]* @array, i64 0, i64 0), align 16
39  ret void
40}
41
42; Function Attrs: noinline nounwind optnone uwtable
43define void @bar(i32 %in) #0 {
44entry:
45  %in.addr = alloca i32, align 4
46  store i32 %in, i32* %in.addr, align 4
47  %0 = load i32, i32* %in.addr, align 4
48  %conv = sitofp i32 %0 to x86_fp80
49  store x86_fp80 %conv, x86_fp80* getelementptr inbounds ([2 x x86_fp80], [2 x x86_fp80]* @array, i64 0, i64 1), align 16
50  ret void
51}
52
53; Function Attrs: noinline nounwind optnone uwtable
54define i32 @main(i32 %argc, i8** %argv) #0 !dbg !14 {
55entry:
56  %retval = alloca i32, align 4
57  %argc.addr = alloca i32, align 4
58  %argv.addr = alloca i8**, align 8
59  store i32 0, i32* %retval, align 4
60  store i32 %argc, i32* %argc.addr, align 4
61  call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !21, metadata !DIExpression()), !dbg !22
62  store i8** %argv, i8*** %argv.addr, align 8
63  call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !23, metadata !DIExpression()), !dbg !24
64  %0 = load i8**, i8*** %argv.addr, align 8, !dbg !25
65  %arrayidx = getelementptr inbounds i8*, i8** %0, i64 0, !dbg !25
66  %1 = load i8*, i8** %arrayidx, align 8, !dbg !25
67  %arrayidx1 = getelementptr inbounds i8, i8* %1, i64 1, !dbg !25
68  %2 = load i8, i8* %arrayidx1, align 1, !dbg !25
69  %conv = sext i8 %2 to i32, !dbg !25
70  call void @foo(i32 %conv), !dbg !26
71  %3 = load i8**, i8*** %argv.addr, align 8, !dbg !27
72  %arrayidx2 = getelementptr inbounds i8*, i8** %3, i64 0, !dbg !27
73  %4 = load i8*, i8** %arrayidx2, align 8, !dbg !27
74  %arrayidx3 = getelementptr inbounds i8, i8* %4, i64 1, !dbg !27
75  %5 = load i8, i8* %arrayidx3, align 1, !dbg !27
76  %conv4 = sext i8 %5 to i32, !dbg !27
77  call void @bar(i32 %conv4), !dbg !28
78  %6 = load x86_fp80, x86_fp80* getelementptr inbounds ([2 x x86_fp80], [2 x x86_fp80]* @array, i64 0, i64 0), align 16, !dbg !29
79  %7 = load x86_fp80, x86_fp80* getelementptr inbounds ([2 x x86_fp80], [2 x x86_fp80]* @array, i64 0, i64 1), align 16, !dbg !30
80  %add = fadd x86_fp80 %6, %7, !dbg !31
81  %cmp = fcmp ogt x86_fp80 %add, 0xK00000000000000000000, !dbg !32
82  %conv5 = zext i1 %cmp to i32, !dbg !32
83  ret i32 %conv5, !dbg !33
84}
85
86; Function Attrs: nounwind readnone speculatable
87declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
88
89attributes #0 = { noinline nounwind optnone uwtable }
90attributes #1 = { nounwind readnone speculatable }
91
92!llvm.dbg.cu = !{!2}
93!llvm.module.flags = !{!10, !11, !12}
94!llvm.ident = !{!13}
95
96!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
97!1 = distinct !DIGlobalVariable(name: "array", scope: !2, file: !3, line: 1, type: !6, isLocal: true, isDefinition: true)
98!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
99!3 = !DIFile(filename: "array.c", directory: "/")
100!4 = !{}
101!5 = !{!0}
102!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 256, elements: !8)
103!7 = !DIBasicType(name: "long double", size: 128, encoding: DW_ATE_float)
104!8 = !{!9}
105!9 = !DISubrange(count: 2)
106!10 = !{i32 2, !"Dwarf Version", i32 4}
107!11 = !{i32 2, !"Debug Info Version", i32 3}
108!12 = !{i32 1, !"wchar_size", i32 4}
109!13 = !{!"clang version 7.0.0"}
110!14 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 4, type: !15, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)
111!15 = !DISubroutineType(types: !16)
112!16 = !{!17, !17, !18}
113!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
114!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
115!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64)
116!20 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
117!21 = !DILocalVariable(name: "argc", arg: 1, scope: !14, file: !3, line: 4, type: !17)
118!22 = !DILocation(line: 4, column: 14, scope: !14)
119!23 = !DILocalVariable(name: "argv", arg: 2, scope: !14, file: !3, line: 4, type: !18)
120!24 = !DILocation(line: 4, column: 27, scope: !14)
121!25 = !DILocation(line: 6, column: 7, scope: !14)
122!26 = !DILocation(line: 6, column: 3, scope: !14)
123!27 = !DILocation(line: 7, column: 7, scope: !14)
124!28 = !DILocation(line: 7, column: 3, scope: !14)
125!29 = !DILocation(line: 8, column: 11, scope: !14)
126!30 = !DILocation(line: 8, column: 22, scope: !14)
127!31 = !DILocation(line: 8, column: 20, scope: !14)
128!32 = !DILocation(line: 8, column: 32, scope: !14)
129!33 = !DILocation(line: 8, column: 3, scope: !14)
130