1 ; RUN: opt -S < %s -passes=globalopt | FileCheck %s
3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-unknown-linux-gnu"
6 @_ZL1x = internal global ptr null, align 8, !dbg !0
8 define i32 @main(i32 %argc, ptr %argv) norecurse !dbg !18 {
9 ; CHECK: define i32 @main
10 ; Make sure we localized the global.
12 ; Make sure the metadata is sane. Currently, we just drop the metadata,
13 ; so it points to nothing.
14 ; CHECK: call void @llvm.dbg.value(metadata !2,
17 call void @llvm.dbg.value(metadata i32 %argc, metadata !22, metadata !23), !dbg !24
18 call void @llvm.dbg.value(metadata ptr %argv, metadata !25, metadata !23), !dbg !26
19 %0 = load ptr, ptr %argv, align 8, !dbg !27
20 store ptr %0, ptr @_ZL1x, align 8, !dbg !29
21 call void @llvm.dbg.value(metadata ptr @_ZL1x, metadata !30, metadata !23), !dbg !31
22 %1 = load ptr, ptr @_ZL1x, align 8, !dbg !32
23 %2 = load i8, ptr %1, align 1, !dbg !33
24 %conv = sext i8 %2 to i32, !dbg !33
25 ret i32 %conv, !dbg !34
28 declare void @llvm.dbg.value(metadata, metadata, metadata)
31 !llvm.module.flags = !{!15, !16}
34 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
35 !1 = distinct !DIGlobalVariable(name: "x", linkageName: "_ZL1x", scope: !2, file: !14, line: 1, type: !6, isLocal: true, isDefinition: true)
36 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !13)
37 !3 = !DIFile(filename: "-", directory: "/")
40 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
41 !7 = !DICompositeType(tag: DW_TAG_array_type, baseType: !8, size: 1600, elements: !9)
42 !8 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
44 !10 = !DISubrange(count: 200)
45 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
46 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64)
48 !14 = !DIFile(filename: "<stdin>", directory: "/")
49 !15 = !{i32 2, !"Dwarf Version", i32 4}
50 !16 = !{i32 2, !"Debug Info Version", i32 3}
52 !18 = distinct !DISubprogram(name: "main", scope: !14, file: !14, line: 2, type: !19, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)
53 !19 = !DISubroutineType(types: !20)
54 !20 = !{!21, !21, !11}
55 !21 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
56 !22 = !DILocalVariable(name: "argc", arg: 1, scope: !18, file: !14, line: 2, type: !21)
58 !24 = !DILocation(line: 2, column: 14, scope: !18)
59 !25 = !DILocalVariable(name: "argv", arg: 2, scope: !18, file: !14, line: 2, type: !11)
60 !26 = !DILocation(line: 2, column: 26, scope: !18)
61 !27 = !DILocation(line: 2, column: 52, scope: !18)
62 !28 = !DILocation(line: 2, column: 38, scope: !18)
63 !29 = !DILocation(line: 2, column: 36, scope: !18)
64 !30 = !DILocalVariable(name: "y", scope: !18, file: !14, line: 2, type: !11)
65 !31 = !DILocation(line: 2, column: 68, scope: !18)
66 !32 = !DILocation(line: 2, column: 92, scope: !18)
67 !33 = !DILocation(line: 2, column: 91, scope: !18)
68 !34 = !DILocation(line: 2, column: 84, scope: !18)