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llvm-6502/test/DebugInfo/X86/byvalstruct.ll
Duncan P. N. Exon Smith b056aa798d DebugInfo: Move new hierarchy into place 
Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464.  I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned.  Let me know if I'm wrong :).

The code changes are fairly mechanical:

  - Bumped the "Debug Info Version".
  - `DIBuilder` now creates the appropriate subclass of `MDNode`.
  - Subclasses of DIDescriptor now expect to hold their "MD"
    counterparts (e.g., `DIBasicType` expects `MDBasicType`).
  - Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
    for printing comments.
  - Big update to LangRef to describe the nodes in the new hierarchy.
    Feel free to make it better.

Testcase changes are enormous.  There's an accompanying clang commit on
its way.

If you have out-of-tree debug info testcases, I just broke your build.

  - `upgrade-specialized-nodes.sh` is attached to PR22564.  I used it to
    update all the IR testcases.
  - Unfortunately I failed to find way to script the updates to CHECK
    lines, so I updated all of these by hand.  This was fairly painful,
    since the old CHECKs are difficult to reason about.  That's one of
    the benefits of the new hierarchy.

This work isn't quite finished, BTW.  The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro).  Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers.  I
also expect to make a few schema changes now that it's easier to reason
about everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 17:24:31 +00:00

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; RUN: llc -mtriple=x86_64-apple-macosx10.8.0 -O0 -filetype=obj -o %t %s
; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
; Test that we generate debug info for by-value struct args that are not used.
;
; CHECK: DW_TAG_formal_parameter
; CHECK: DW_TAG_formal_parameter
; CHECK: DW_TAG_formal_parameter
; CHECK: DW_TAG_formal_parameter
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name {{.*}} "info"
;
; generated from
;
; typedef unsigned long NSUInteger;
; typedef struct
; {
; NSUInteger width;
; NSUInteger height;
; double pixelAspect;
; } ImageInfo;
; @implementation Bitmap
; - (id)initWithCopy:(Bitmap *)otherBitmap
; andInfo:(ImageInfo)info
; andLength:(NSUInteger)length
; {
; }
; @end
; ModuleID = 't.mm'
target 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"
target triple = "x86_64-apple-macosx10.8.0"
%0 = type opaque
%struct._objc_cache = type opaque
%struct._class_t = type { %struct._class_t*, %struct._class_t*, %struct._objc_cache*, i8* (i8*, i8*)**, %struct._class_ro_t* }
%struct._class_ro_t = type { i32, i32, i32, i8*, i8*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._ivar_list_t*, i8*, %struct._prop_list_t* }
%struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }
%struct._objc_method = type { i8*, i8*, i8* }
%struct._objc_protocol_list = type { i64, [0 x %struct._protocol_t*] }
%struct._protocol_t = type { i8*, i8*, %struct._objc_protocol_list*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._prop_list_t*, i32, i32, i8** }
%struct._prop_list_t = type { i32, i32, [0 x %struct._prop_t] }
%struct._prop_t = type { i8*, i8* }
%struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }
%struct._ivar_t = type { i64*, i8*, i8*, i32, i32 }
%struct.ImageInfo = type { i64, i64, double }
@_objc_empty_cache = external global %struct._objc_cache
@_objc_empty_vtable = external global i8* (i8*, i8*)*
@"OBJC_CLASS_$_Bitmap" = global %struct._class_t { %struct._class_t* @"OBJC_METACLASS_$_Bitmap", %struct._class_t* null, %struct._objc_cache* @_objc_empty_cache, i8* (i8*, i8*)** @_objc_empty_vtable, %struct._class_ro_t* @"\01l_OBJC_CLASS_RO_$_Bitmap" }, section "__DATA, __objc_data", align 8
@"OBJC_METACLASS_$_Bitmap" = global %struct._class_t { %struct._class_t* @"OBJC_METACLASS_$_Bitmap", %struct._class_t* @"OBJC_CLASS_$_Bitmap", %struct._objc_cache* @_objc_empty_cache, i8* (i8*, i8*)** @_objc_empty_vtable, %struct._class_ro_t* @"\01l_OBJC_METACLASS_RO_$_Bitmap" }, section "__DATA, __objc_data", align 8
@"\01L_OBJC_CLASS_NAME_" = internal global [7 x i8] c"Bitmap\00", section "__TEXT,__objc_classname,cstring_literals", align 1
@"\01l_OBJC_METACLASS_RO_$_Bitmap" = internal global %struct._class_ro_t { i32 3, i32 40, i32 40, i8* null, i8* getelementptr inbounds ([7 x i8]* @"\01L_OBJC_CLASS_NAME_", i32 0, i32 0), %struct.__method_list_t* null, %struct._objc_protocol_list* null, %struct._ivar_list_t* null, i8* null, %struct._prop_list_t* null }, section "__DATA, __objc_const", align 8
@"\01L_OBJC_METH_VAR_NAME_" = internal global [32 x i8] c"initWithCopy:andInfo:andLength:\00", section "__TEXT,__objc_methname,cstring_literals", align 1
@"\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 1
@"\01l_OBJC_$_INSTANCE_METHODS_Bitmap" = internal global { i32, i32, [1 x %struct._objc_method] } { i32 24, i32 1, [1 x %struct._objc_method] [%struct._objc_method { i8* getelementptr inbounds ([32 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* getelementptr inbounds ([23 x i8]* @"\01L_OBJC_METH_VAR_TYPE_", i32 0, i32 0), i8* bitcast (i8* (%0*, i8*, %0*, %struct.ImageInfo*, i64)* @"\01-[Bitmap initWithCopy:andInfo:andLength:]" to i8*) }] }, section "__DATA, __objc_const", align 8
@"\01l_OBJC_CLASS_RO_$_Bitmap" = internal global %struct._class_ro_t { i32 2, i32 0, i32 0, i8* null, i8* getelementptr inbounds ([7 x i8]* @"\01L_OBJC_CLASS_NAME_", i32 0, i32 0), %struct.__method_list_t* bitcast ({ i32, i32, [1 x %struct._objc_method] }* @"\01l_OBJC_$_INSTANCE_METHODS_Bitmap" to %struct.__method_list_t*), %struct._objc_protocol_list* null, %struct._ivar_list_t* null, i8* null, %struct._prop_list_t* null }, section "__DATA, __objc_const", align 8
@"\01L_OBJC_LABEL_CLASS_$" = internal global [1 x i8*] [i8* bitcast (%struct._class_t* @"OBJC_CLASS_$_Bitmap" to i8*)], section "__DATA, __objc_classlist, regular, no_dead_strip", align 8
@llvm.used = appending global [5 x i8*] [i8* getelementptr inbounds ([7 x i8]* @"\01L_OBJC_CLASS_NAME_", i32 0, i32 0), i8* getelementptr inbounds ([32 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* getelementptr inbounds ([23 x i8]* @"\01L_OBJC_METH_VAR_TYPE_", i32 0, i32 0), i8* bitcast ({ i32, i32, [1 x %struct._objc_method] }* @"\01l_OBJC_$_INSTANCE_METHODS_Bitmap" to i8*), i8* bitcast ([1 x i8*]* @"\01L_OBJC_LABEL_CLASS_$" to i8*)], section "llvm.metadata"
; Function Attrs: ssp uwtable
define internal i8* @"\01-[Bitmap initWithCopy:andInfo:andLength:]"(%0* %self, i8* %_cmd, %0* %otherBitmap, %struct.ImageInfo* byval align 8 %info, i64 %length) #0 {
entry:
%retval = alloca i8*, align 8
%self.addr = alloca %0*, align 8
%_cmd.addr = alloca i8*, align 8
%otherBitmap.addr = alloca %0*, align 8
%length.addr = alloca i64, align 8
store %0* %self, %0** %self.addr, align 8
call void @llvm.dbg.declare(metadata %0** %self.addr, metadata !28, metadata !MDExpression()), !dbg !29
store i8* %_cmd, i8** %_cmd.addr, align 8
call void @llvm.dbg.declare(metadata i8** %_cmd.addr, metadata !30, metadata !MDExpression()), !dbg !29
store %0* %otherBitmap, %0** %otherBitmap.addr, align 8
call void @llvm.dbg.declare(metadata %0** %otherBitmap.addr, metadata !32, metadata !MDExpression()), !dbg !29
call void @llvm.dbg.declare(metadata %struct.ImageInfo* %info, metadata !33, metadata !MDExpression()), !dbg !34
store i64 %length, i64* %length.addr, align 8
call void @llvm.dbg.declare(metadata i64* %length.addr, metadata !35, metadata !MDExpression()), !dbg !36
%0 = load i8*, i8** %retval, !dbg !37
ret i8* %0, !dbg !37
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
attributes #0 = { ssp uwtable }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!24, !25, !26, !27, !38}
!0 = !MDCompileUnit(language: DW_LANG_ObjC_plus_plus, producer: "clang version 3.4 ", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !6, globals: !2, imports: !2)
!1 = !MDFile(filename: "t.mm", directory: "")
!2 = !{}
!3 = !{!4}
!4 = !MDCompositeType(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)
!5 = !MDFile(filename: "t.mm", directory: "")
!6 = !{!7}
!7 = !MDSubprogram(name: "-[Bitmap initWithCopy:andInfo:andLength:]", line: 9, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 9, file: !1, scope: !5, type: !8, function: i8* (%0*, i8*, %0*, %struct.ImageInfo*, i64)* @"\01-[Bitmap initWithCopy:andInfo:andLength:]", variables: !2)
!8 = !MDSubroutineType(types: !9)
!9 = !{!4, !10, !11, !14, !15, !19}
!10 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
!11 = !MDDerivedType(tag: DW_TAG_typedef, name: "SEL", line: 9, flags: DIFlagArtificial, file: !1, baseType: !12)
!12 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !13)
!13 = !MDCompositeType(tag: DW_TAG_structure_type, name: "objc_selector", flags: DIFlagFwdDecl, file: !1)
!14 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
!15 = !MDDerivedType(tag: DW_TAG_typedef, name: "ImageInfo", line: 7, file: !1, baseType: !16)
!16 = !MDCompositeType(tag: DW_TAG_structure_type, line: 2, size: 192, align: 64, file: !1, elements: !17)
!17 = !{!18, !21, !22}
!18 = !MDDerivedType(tag: DW_TAG_member, name: "width", line: 4, size: 64, align: 64, file: !1, scope: !16, baseType: !19)
!19 = !MDDerivedType(tag: DW_TAG_typedef, name: "NSUInteger", line: 1, file: !1, baseType: !20)
!20 = !MDBasicType(tag: DW_TAG_base_type, name: "long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
!21 = !MDDerivedType(tag: DW_TAG_member, name: "height", line: 5, size: 64, align: 64, offset: 64, file: !1, scope: !16, baseType: !19)
!22 = !MDDerivedType(tag: DW_TAG_member, name: "pixelAspect", line: 6, size: 64, align: 64, offset: 128, file: !1, scope: !16, baseType: !23)
!23 = !MDBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 64, encoding: DW_ATE_float)
!24 = !{i32 1, !"Objective-C Version", i32 2}
!25 = !{i32 1, !"Objective-C Image Info Version", i32 0}
!26 = !{i32 1, !"Objective-C Image Info Section", !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
!27 = !{i32 4, !"Objective-C Garbage Collection", i32 0}
!28 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "self", line: 9, arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !7, file: !5, type: !14)
!29 = !MDLocation(line: 9, scope: !7)
!30 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "_cmd", line: 9, arg: 2, flags: DIFlagArtificial, scope: !7, file: !5, type: !31)
!31 = !MDDerivedType(tag: DW_TAG_typedef, name: "SEL", line: 9, file: !1, baseType: !12)
!32 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "otherBitmap", line: 9, arg: 3, scope: !7, file: !5, type: !14)
!33 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "info", line: 10, arg: 4, scope: !7, file: !5, type: !15)
!34 = !MDLocation(line: 10, scope: !7)
!35 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "length", line: 11, arg: 5, scope: !7, file: !5, type: !19)
!36 = !MDLocation(line: 11, scope: !7)
!37 = !MDLocation(line: 13, scope: !7)
!38 = !{i32 1, !"Debug Info Version", i32 3}
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