2 ; RUN: opt < %s -globalopt -stats -disable-output 2>&1 | FileCheck %s
3 ; CHECK: 1 globalopt - Number of global vars shrunk to booleans
5 source_filename = "test/Transforms/GlobalOpt/2009-03-05-dbg.ll"
7 @Stop = internal global i32 0, !dbg !0
9 ; Function Attrs: nounwind ssp
10 define i32 @foo(i32 %i) #0 {
12 %"alloca point" = bitcast i32 0 to i32
13 call void @llvm.dbg.value(metadata i32 %i, metadata !8, metadata !12), !dbg !13
14 %0 = icmp eq i32 %i, 1, !dbg !13
15 br i1 %0, label %bb, label %bb1, !dbg !13
18 store i32 0, i32* @Stop, align 4, !dbg !15
19 %1 = mul nsw i32 %i, 42, !dbg !16
20 call void @llvm.dbg.value(metadata i32 %1, metadata !8, metadata !12), !dbg !16
21 br label %bb2, !dbg !16
24 store i32 1, i32* @Stop, align 4, !dbg !17
25 br label %bb2, !dbg !17
27 bb2: ; preds = %bb1, %bb
28 %i_addr.0 = phi i32 [ %1, %bb ], [ %i, %bb1 ]
29 br label %return, !dbg !18
31 return: ; preds = %bb2
32 ret i32 %i_addr.0, !dbg !18
35 ; Function Attrs: nounwind readnone
37 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
39 ; Function Attrs: nounwind ssp
40 define i32 @bar() #0 {
42 %"alloca point" = bitcast i32 0 to i32
43 %0 = load i32, i32* @Stop, align 4, !dbg !19
44 %1 = icmp eq i32 %0, 1, !dbg !19
45 br i1 %1, label %bb, label %bb1, !dbg !19
49 br label %bb2, !dbg !24
52 br label %bb2, !dbg !25
54 bb2: ; preds = %bb1, %bb
55 %.0 = phi i32 [ 0, %bb ], [ 1, %bb1 ]
56 br label %return, !dbg !25
58 return: ; preds = %bb2
62 ; Function Attrs: nounwind readnone
63 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
65 attributes #0 = { nounwind ssp }
66 attributes #1 = { nounwind readnone }
69 !llvm.module.flags = !{!6, !7}
71 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
72 !1 = !DIGlobalVariable(name: "Stop", scope: !2, file: !3, line: 2, type: !5, isLocal: true, isDefinition: true)
73 !2 = distinct !DICompileUnit(language: DW_LANG_C89, file: !3, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4)
74 !3 = !DIFile(filename: "g.c", directory: "/tmp")
76 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
77 !6 = !{i32 2, !"Dwarf Version", i32 2}
78 !7 = !{i32 2, !"Debug Info Version", i32 3}
79 !8 = !DILocalVariable(name: "i", arg: 1, scope: !9, file: !3, line: 4, type: !5)
80 !9 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !2, file: !3, line: 4, type: !10, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2)!10 = !DISubroutineType(types: !11)!11 = !{!5, !5}!12 = !DIExpression()!13 = !DILocation(line: 5, scope: !14)!14 = distinct !DILexicalBlock(scope: !9, file: !3)!15 = !DILocation(line: 6, scope: !14)!16 = !DILocation(line: 7, scope: !14)!17 = !DILocation(line: 9, scope: !14)!18 = !DILocation(line: 11, scope: !14)!19 = !DILocation(line: 14, scope: !20)!20 = distinct !DILexicalBlock(scope: !21, file: !3)!21 = distinct !DISubprogram(name: "bar", linkageName: "bar", scope: !2, file: !3, line: 13, type: !22, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2)!22 = !DISubroutineType(types: !23)!23 = !{!5}!24 = !DILocation(line: 15, scope: !20)!25 = !DILocation(line: 16, scope: !20)