1; RUN: llc -mtriple=x86_64-apple-darwin10 < %s | FileCheck %s
2
3%struct.a = type { i32 }
4
5define i32 @bar(%struct.a* nocapture %b) nounwind ssp !dbg !0 {
6entry:
7  tail call void @llvm.dbg.value(metadata %struct.a* %b, i64 0, metadata !6, metadata !DIExpression()), !dbg !13
8  %tmp1 = getelementptr inbounds %struct.a, %struct.a* %b, i64 0, i32 0, !dbg !14
9  %tmp2 = load i32, i32* %tmp1, align 4, !dbg !14
10  tail call void @llvm.dbg.value(metadata i32 %tmp2, i64 0, metadata !11, metadata !DIExpression()), !dbg !14
11  %call = tail call i32 (...) @foo(i32 %tmp2) nounwind , !dbg !18
12  %add = add nsw i32 %tmp2, 1, !dbg !19
13  ret i32 %add, !dbg !19
14}
15
16declare i32 @foo(...)
17
18declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
19
20!llvm.dbg.cu = !{!2}
21!llvm.module.flags = !{!24}
22
23!0 = distinct !DISubprogram(name: "bar", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !22, scope: !1, type: !3, variables: !21)
24!1 = !DIFile(filename: "bar.c", directory: "/private/tmp")
25!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 122997)", isOptimized: true, emissionKind: 1, file: !22, enums: !23, retainedTypes: !23, subprograms: !20, imports:  null)
26!3 = !DISubroutineType(types: !4)
27!4 = !{!5}
28!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
29!6 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !0, file: !1, type: !7)
30!7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, scope: !2, baseType: !8)
31!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "a", line: 1, size: 32, align: 32, file: !22, scope: !2, elements: !9)
32!9 = !{!10}
33!10 = !DIDerivedType(tag: DW_TAG_member, name: "c", line: 2, size: 32, align: 32, file: !22, scope: !1, baseType: !5)
34!11 = !DILocalVariable(name: "x", line: 6, scope: !12, file: !1, type: !5)
35!12 = distinct !DILexicalBlock(line: 5, column: 22, file: !22, scope: !0)
36!13 = !DILocation(line: 5, column: 19, scope: !0)
37!14 = !DILocation(line: 6, column: 14, scope: !12)
38!18 = !DILocation(line: 7, column: 2, scope: !12)
39!19 = !DILocation(line: 8, column: 2, scope: !12)
40!20 = !{!0}
41!21 = !{!6, !11}
42!22 = !DIFile(filename: "bar.c", directory: "/private/tmp")
43!23 = !{}
44
45; Check that variable bar:b value range is appropriately truncated in debug info.
46; The variable is in %rdi which is clobbered by 'movl %ebx, %edi'
47; Here Ltmp7 is the end of the location range.
48
49;CHECK: .loc	1 7 2
50;CHECK: movl
51;CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]]
52
53;CHECK:Ldebug_loc0:
54;CHECK-NEXT: Lset{{.*}} =
55;CHECK-NEXT:	.quad
56;CHECK-NEXT: [[CLOBBER_OFF:Lset.*]] = [[CLOBBER]]-{{.*}}
57;CHECK-NEXT:	.quad	[[CLOBBER_OFF]]
58;CHECK-NEXT:  .short 1 ## Loc expr size
59;CHECK-NEXT:	.byte	85 ## DW_OP_reg
60;CHECK-NEXT:	.quad	0
61;CHECK-NEXT:	.quad	0
62!24 = !{i32 1, !"Debug Info Version", i32 3}
63