1 ; RUN: llc -mtriple=x86_64-apple-darwin10 < %s | FileCheck %s 2 3 %struct.a = type { i32 } 4 5 define i32 @bar(%struct.a* nocapture %b) nounwind ssp !dbg !0 { 6 entry: 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 16 declare i32 @foo(...) 17 18 declare 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, unit: !2, 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: FullDebug, file: !22, enums: !23, retainedTypes: !23, 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 !21 = !{!6, !11} 41 !22 = !DIFile(filename: "bar.c", directory: "/private/tmp") 42 !23 = !{} 43 44 ; Check that variable bar:b value range is appropriately truncated in debug info. 45 ; The variable is in %rdi which is clobbered by 'movl %ebx, %edi' 46 ; Here Ltmp7 is the end of the location range. 47 48 ;CHECK: .loc 1 7 2 49 ;CHECK: movl 50 ;CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]] 51 52 ;CHECK:Ldebug_loc0: 53 ;CHECK-NEXT: Lset{{.*}} = 54 ;CHECK-NEXT: .quad 55 ;CHECK-NEXT: [[CLOBBER_OFF:Lset.*]] = [[CLOBBER]]-{{.*}} 56 ;CHECK-NEXT: .quad [[CLOBBER_OFF]] 57 ;CHECK-NEXT: .short 1 ## Loc expr size 58 ;CHECK-NEXT: .byte 85 ## DW_OP_reg 59 ;CHECK-NEXT: .quad 0 60 ;CHECK-NEXT: .quad 0 61 !24 = !{i32 1, !"Debug Info Version", i32 3} 62
