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