1; RUN: llc < %s - | FileCheck %s
2;
3; FIXME: A potentially more interesting test case would be:
4; %call = @bar()
5; dbg.value j=0
6; %call2 = @bar()
7; dbg.value j=%call
8;
9; We cannot current handle the above sequence because codegenprepare
10; hoists the second dbg.value above %call2, which then appears to
11; conflict with j=0. It does this because SelectionDAG cannot handle
12; global debug values.
13
14target triple = "x86_64-apple-darwin10.0.0"
15
16;CHECK:        ## DW_OP_consts
17;CHECK-NEXT:  .byte	42
18define i32 @foobar() nounwind readonly noinline ssp {
19entry:
20  tail call void @llvm.dbg.value(metadata i32 42, i64 0, metadata !6, metadata !MDExpression()), !dbg !9
21  %call = tail call i32 @bar(), !dbg !11
22  tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !6, metadata !MDExpression()), !dbg !11
23  %call2 = tail call i32 @bar(), !dbg !11
24  %add = add nsw i32 %call2, %call, !dbg !12
25  ret i32 %add, !dbg !10
26}
27
28declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
29declare i32 @bar() nounwind readnone
30
31!llvm.dbg.cu = !{!2}
32!llvm.module.flags = !{!17}
33
34!0 = !MDSubprogram(name: "foobar", linkageName: "foobar", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !15, scope: !1, type: !3, function: i32 ()* @foobar, variables: !14)
35!1 = !MDFile(filename: "mu.c", directory: "/private/tmp")
36!2 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 114183)", isOptimized: true, emissionKind: 1, file: !15, enums: !16, retainedTypes: !16, subprograms: !13, imports:  null)
37!3 = !MDSubroutineType(types: !4)
38!4 = !{!5}
39!5 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
40!6 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "j", line: 15, scope: !7, file: !1, type: !5)
41!7 = distinct !MDLexicalBlock(line: 12, column: 52, file: !15, scope: !0)
42!8 = !{i32 42}
43!9 = !MDLocation(line: 15, column: 12, scope: !7)
44!10 = !MDLocation(line: 23, column: 3, scope: !7)
45!11 = !MDLocation(line: 17, column: 3, scope: !7)
46!12 = !MDLocation(line: 18, column: 3, scope: !7)
47!13 = !{!0}
48!14 = !{!6}
49!15 = !MDFile(filename: "mu.c", directory: "/private/tmp")
50!16 = !{}
51!17 = !{i32 1, !"Debug Info Version", i32 3}
52