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1; RUN: llc -mtriple=x86_64-apple-macosx10.8.0 -O0 -filetype=obj -o %t %s2; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s3; Test that we generate debug info for by-value struct args that are not used.4;5; CHECK: DW_TAG_formal_parameter6; CHECK: DW_TAG_formal_parameter7; CHECK: DW_TAG_formal_parameter8; CHECK: DW_TAG_formal_parameter9; CHECK-NOT: DW_TAG10; CHECK: DW_AT_name {{.*}} "info"11;12; generated from13;14; typedef unsigned long NSUInteger;15; typedef struct16; {17; NSUInteger width;18; NSUInteger height;19; double pixelAspect;20; } ImageInfo;21; @implementation Bitmap22; - (id)initWithCopy:(Bitmap *)otherBitmap23; andInfo:(ImageInfo)info24; andLength:(NSUInteger)length25; {26; }27; @end28 29; ModuleID = 't.mm'30target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"31target triple = "x86_64-apple-macosx10.8.0"32 33%0 = type opaque34%struct._objc_cache = type opaque35%struct._class_t = type { ptr, ptr, ptr, ptr, ptr }36%struct._class_ro_t = type { i32, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr }37%struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }38%struct._objc_method = type { ptr, ptr, ptr }39%struct._objc_protocol_list = type { i64, [0 x ptr] }40%struct._protocol_t = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, ptr }41%struct._prop_list_t = type { i32, i32, [0 x %struct._prop_t] }42%struct._prop_t = type { ptr, ptr }43%struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }44%struct._ivar_t = type { ptr, ptr, ptr, i32, i32 }45%struct.ImageInfo = type { i64, i64, double }46 47@_objc_empty_cache = external global %struct._objc_cache48@_objc_empty_vtable = external global ptr49@"OBJC_CLASS_$_Bitmap" = global %struct._class_t { ptr @"OBJC_METACLASS_$_Bitmap", ptr null, ptr @_objc_empty_cache, ptr @_objc_empty_vtable, ptr @"\01l_OBJC_CLASS_RO_$_Bitmap" }, section "__DATA, __objc_data", align 850@"OBJC_METACLASS_$_Bitmap" = global %struct._class_t { ptr @"OBJC_METACLASS_$_Bitmap", ptr @"OBJC_CLASS_$_Bitmap", ptr @_objc_empty_cache, ptr @_objc_empty_vtable, ptr @"\01l_OBJC_METACLASS_RO_$_Bitmap" }, section "__DATA, __objc_data", align 851@"\01L_OBJC_CLASS_NAME_" = internal global [7 x i8] c"Bitmap\00", section "__TEXT,__objc_classname,cstring_literals", align 152@"\01l_OBJC_METACLASS_RO_$_Bitmap" = internal global %struct._class_ro_t { i32 3, i32 40, i32 40, ptr null, ptr @"\01L_OBJC_CLASS_NAME_", ptr null, ptr null, ptr null, ptr null, ptr null }, section "__DATA, __objc_const", align 853@"\01L_OBJC_METH_VAR_NAME_" = internal global [32 x i8] c"initWithCopy:andInfo:andLength:\00", section "__TEXT,__objc_methname,cstring_literals", align 154@"\01L_OBJC_METH_VAR_TYPE_" = internal global [23 x i8] c"@56@0:8@16{?=QQd}24Q48\00", section "__TEXT,__objc_methtype,cstring_literals", align 155@"\01l_OBJC_$_INSTANCE_METHODS_Bitmap" = internal global { i32, i32, [1 x %struct._objc_method] } { i32 24, i32 1, [1 x %struct._objc_method] [%struct._objc_method { ptr @"\01L_OBJC_METH_VAR_NAME_", ptr @"\01L_OBJC_METH_VAR_TYPE_", ptr @"\01-[Bitmap initWithCopy:andInfo:andLength:]" }] }, section "__DATA, __objc_const", align 856@"\01l_OBJC_CLASS_RO_$_Bitmap" = internal global %struct._class_ro_t { i32 2, i32 0, i32 0, ptr null, ptr @"\01L_OBJC_CLASS_NAME_", ptr @"\01l_OBJC_$_INSTANCE_METHODS_Bitmap", ptr null, ptr null, ptr null, ptr null }, section "__DATA, __objc_const", align 857@"\01L_OBJC_LABEL_CLASS_$" = internal global [1 x ptr] [ptr @"OBJC_CLASS_$_Bitmap"], section "__DATA, __objc_classlist, regular, no_dead_strip", align 858@llvm.used = appending global [5 x ptr] [ptr @"\01L_OBJC_CLASS_NAME_", ptr @"\01L_OBJC_METH_VAR_NAME_", ptr @"\01L_OBJC_METH_VAR_TYPE_", ptr @"\01l_OBJC_$_INSTANCE_METHODS_Bitmap", ptr @"\01L_OBJC_LABEL_CLASS_$"], section "llvm.metadata"59 60; Function Attrs: ssp uwtable61define internal ptr @"\01-[Bitmap initWithCopy:andInfo:andLength:]"(ptr %self, ptr %_cmd, ptr %otherBitmap, ptr byval(%struct.ImageInfo) align 8 %info, i64 %length) #0 !dbg !7 {62entry:63 %retval = alloca ptr, align 864 %self.addr = alloca ptr, align 865 %_cmd.addr = alloca ptr, align 866 %otherBitmap.addr = alloca ptr, align 867 %length.addr = alloca i64, align 868 store ptr %self, ptr %self.addr, align 869 call void @llvm.dbg.declare(metadata ptr %self.addr, metadata !28, metadata !DIExpression()), !dbg !2970 store ptr %_cmd, ptr %_cmd.addr, align 871 call void @llvm.dbg.declare(metadata ptr %_cmd.addr, metadata !30, metadata !DIExpression()), !dbg !2972 store ptr %otherBitmap, ptr %otherBitmap.addr, align 873 call void @llvm.dbg.declare(metadata ptr %otherBitmap.addr, metadata !32, metadata !DIExpression()), !dbg !2974 call void @llvm.dbg.declare(metadata ptr %info, metadata !33, metadata !DIExpression()), !dbg !3475 store i64 %length, ptr %length.addr, align 876 call void @llvm.dbg.declare(metadata ptr %length.addr, metadata !35, metadata !DIExpression()), !dbg !3677 %0 = load ptr, ptr %retval, !dbg !3778 ret ptr %0, !dbg !3779}80 81; Function Attrs: nounwind readnone82declare void @llvm.dbg.declare(metadata, metadata, metadata) #183 84attributes #0 = { ssp uwtable }85attributes #1 = { nounwind readnone }86 87!llvm.dbg.cu = !{!0}88!llvm.module.flags = !{!24, !25, !26, !27, !38}89 90!0 = distinct !DICompileUnit(language: DW_LANG_ObjC_plus_plus, producer: "clang version 3.4 ", isOptimized: false, runtimeVersion: 2, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)91!1 = !DIFile(filename: "t.mm", directory: "")92!2 = !{}93!3 = !{!4}94!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "Bitmap", line: 8, size: 8, align: 8, flags: DIFlagObjcClassComplete, runtimeLang: DW_LANG_ObjC_plus_plus, file: !1, scope: !5, elements: !2)95!5 = !DIFile(filename: "t.mm", directory: "")96!7 = distinct !DISubprogram(name: "-[Bitmap initWithCopy:andInfo:andLength:]", line: 9, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 9, file: !1, scope: !5, type: !8, retainedNodes: !2)97!8 = !DISubroutineType(types: !9)98!9 = !{!4, !10, !11, !14, !15, !19}99!10 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)100!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "SEL", line: 9, flags: DIFlagArtificial, file: !1, baseType: !12)101!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !13)102!13 = !DICompositeType(tag: DW_TAG_structure_type, name: "objc_selector", flags: DIFlagFwdDecl, file: !1)103!14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)104!15 = !DIDerivedType(tag: DW_TAG_typedef, name: "ImageInfo", line: 7, file: !1, baseType: !16)105!16 = !DICompositeType(tag: DW_TAG_structure_type, line: 2, size: 192, align: 64, file: !1, elements: !17)106!17 = !{!18, !21, !22}107!18 = !DIDerivedType(tag: DW_TAG_member, name: "width", line: 4, size: 64, align: 64, file: !1, scope: !16, baseType: !19)108!19 = !DIDerivedType(tag: DW_TAG_typedef, name: "NSUInteger", line: 1, file: !1, baseType: !20)109!20 = !DIBasicType(tag: DW_TAG_base_type, name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)110!21 = !DIDerivedType(tag: DW_TAG_member, name: "height", line: 5, size: 64, align: 64, offset: 64, file: !1, scope: !16, baseType: !19)111!22 = !DIDerivedType(tag: DW_TAG_member, name: "pixelAspect", line: 6, size: 64, align: 64, offset: 128, file: !1, scope: !16, baseType: !23)112!23 = !DIBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 64, encoding: DW_ATE_float)113!24 = !{i32 1, !"Objective-C Version", i32 2}114!25 = !{i32 1, !"Objective-C Image Info Version", i32 0}115!26 = !{i32 1, !"Objective-C Image Info Section", !"__DATA, __objc_imageinfo, regular, no_dead_strip"}116!27 = !{i32 4, !"Objective-C Garbage Collection", i32 0}117!28 = !DILocalVariable(name: "self", line: 9, arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !7, file: !5, type: !14)118!29 = !DILocation(line: 9, scope: !7)119!30 = !DILocalVariable(name: "_cmd", line: 9, arg: 2, flags: DIFlagArtificial, scope: !7, file: !5, type: !31)120!31 = !DIDerivedType(tag: DW_TAG_typedef, name: "SEL", line: 9, file: !1, baseType: !12)121!32 = !DILocalVariable(name: "otherBitmap", line: 9, arg: 3, scope: !7, file: !5, type: !14)122!33 = !DILocalVariable(name: "info", line: 10, arg: 4, scope: !7, file: !5, type: !15)123!34 = !DILocation(line: 10, scope: !7)124!35 = !DILocalVariable(name: "length", line: 11, arg: 5, scope: !7, file: !5, type: !19)125!36 = !DILocation(line: 11, scope: !7)126!37 = !DILocation(line: 13, scope: !7)127!38 = !{i32 1, !"Debug Info Version", i32 3}128