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llvm-mirror/test/DebugInfo/X86/byvalstruct.ll

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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 !{metadata !"0x102"}), !dbg !29
store i8* %_cmd, i8** %_cmd.addr, align 8
call void @llvm.dbg.declare(metadata !{i8** %_cmd.addr}, metadata !30, metadata !{metadata !"0x102"}), !dbg !29
store %0* %otherBitmap, %0** %otherBitmap.addr, align 8
call void @llvm.dbg.declare(metadata !{%0** %otherBitmap.addr}, metadata !32, metadata !{metadata !"0x102"}), !dbg !29
call void @llvm.dbg.declare(metadata !{%struct.ImageInfo* %info}, metadata !33, metadata !{metadata !"0x102"}), !dbg !34
store i64 %length, i64* %length.addr, align 8
call void @llvm.dbg.declare(metadata !{i64* %length.addr}, metadata !35, metadata !{metadata !"0x102"}), !dbg !36
%0 = load i8** %retval, !dbg !37
ret i8* %0, !dbg !37
}
; Function Attrs: nounwind readnone
Move the complex address expression out of DIVariable and into an extra argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. llvm-svn: 218787
2014-10-01 20:55:02 +02:00
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 = metadata !{metadata !"0x11\0017\00clang version 3.4 \000\00\002\00\000", metadata !1, metadata !2, metadata !3, metadata !6, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [/t.mm] [DW_LANG_ObjC_plus_plus]
!1 = metadata !{metadata !"t.mm", metadata !""}
!2 = metadata !{}
!3 = metadata !{metadata !4}
!4 = metadata !{metadata !"0x13\00Bitmap\008\008\008\000\00512\0017", metadata !1, metadata !5, null, metadata !2, null, null, null} ; [ DW_TAG_structure_type ] [Bitmap] [line 8, size 8, align 8, offset 0] [def] [from ]
!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [/t.mm]
!6 = metadata !{metadata !7}
!7 = metadata !{metadata !"0x2e\00-[Bitmap initWithCopy:andInfo:andLength:]\00-[Bitmap initWithCopy:andInfo:andLength:]\00\009\001\001\000\006\00256\000\009", metadata !1, metadata !5, metadata !8, null, i8* (%0*, i8*, %0*, %struct.ImageInfo*, i64)* @"\01-[Bitmap initWithCopy:andInfo:andLength:]", null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 9] [local] [def] [-[Bitmap initWithCopy:andInfo:andLength:]]
!8 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !9, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!9 = metadata !{metadata !4, metadata !10, metadata !11, metadata !14, metadata !15, metadata !19}
!10 = metadata !{metadata !"0xf\00\000\0064\0064\000\001088", i32 0, null, metadata !4} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from Bitmap]
!11 = metadata !{metadata !"0x16\00SEL\009\000\000\000\0064", metadata !1, null, metadata !12} ; [ DW_TAG_typedef ] [SEL] [line 9, size 0, align 0, offset 0] [artificial] [from ]
!12 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !13} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from objc_selector]
!13 = metadata !{metadata !"0x13\00objc_selector\000\000\000\000\004\000", metadata !1, null, null, null, null, null, null} ; [ DW_TAG_structure_type ] [objc_selector] [line 0, size 0, align 0, offset 0] [decl] [from ]
!14 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !4} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from Bitmap]
!15 = metadata !{metadata !"0x16\00ImageInfo\007\000\000\000\000", metadata !1, null, metadata !16} ; [ DW_TAG_typedef ] [ImageInfo] [line 7, size 0, align 0, offset 0] [from ]
!16 = metadata !{metadata !"0x13\00\002\00192\0064\000\000\000", metadata !1, null, null, metadata !17, null, null, null} ; [ DW_TAG_structure_type ] [line 2, size 192, align 64, offset 0] [def] [from ]
!17 = metadata !{metadata !18, metadata !21, metadata !22}
!18 = metadata !{metadata !"0xd\00width\004\0064\0064\000\000", metadata !1, metadata !16, metadata !19} ; [ DW_TAG_member ] [width] [line 4, size 64, align 64, offset 0] [from NSUInteger]
!19 = metadata !{metadata !"0x16\00NSUInteger\001\000\000\000\000", metadata !1, null, metadata !20} ; [ DW_TAG_typedef ] [NSUInteger] [line 1, size 0, align 0, offset 0] [from long unsigned int]
!20 = metadata !{metadata !"0x24\00long unsigned int\000\0064\0064\000\000\007", null, null} ; [ DW_TAG_base_type ] [long unsigned int] [line 0, size 64, align 64, offset 0, enc DW_ATE_unsigned]
!21 = metadata !{metadata !"0xd\00height\005\0064\0064\0064\000", metadata !1, metadata !16, metadata !19} ; [ DW_TAG_member ] [height] [line 5, size 64, align 64, offset 64] [from NSUInteger]
!22 = metadata !{metadata !"0xd\00pixelAspect\006\0064\0064\00128\000", metadata !1, metadata !16, metadata !23} ; [ DW_TAG_member ] [pixelAspect] [line 6, size 64, align 64, offset 128] [from double]
!23 = metadata !{metadata !"0x24\00double\000\0064\0064\000\000\004", null, null} ; [ DW_TAG_base_type ] [double] [line 0, size 64, align 64, offset 0, enc DW_ATE_float]
!24 = metadata !{i32 1, metadata !"Objective-C Version", i32 2}
!25 = metadata !{i32 1, metadata !"Objective-C Image Info Version", i32 0}
!26 = metadata !{i32 1, metadata !"Objective-C Image Info Section", metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
!27 = metadata !{i32 4, metadata !"Objective-C Garbage Collection", i32 0}
!28 = metadata !{metadata !"0x101\00self\0016777225\001088", metadata !7, metadata !5, metadata !14} ; [ DW_TAG_arg_variable ] [self] [line 9]
!29 = metadata !{i32 9, i32 0, metadata !7, null}
!30 = metadata !{metadata !"0x101\00_cmd\0033554441\0064", metadata !7, metadata !5, metadata !31} ; [ DW_TAG_arg_variable ] [_cmd] [line 9]
!31 = metadata !{metadata !"0x16\00SEL\009\000\000\000\000", metadata !1, null, metadata !12} ; [ DW_TAG_typedef ] [SEL] [line 9, size 0, align 0, offset 0] [from ]
!32 = metadata !{metadata !"0x101\00otherBitmap\0050331657\000", metadata !7, metadata !5, metadata !14} ; [ DW_TAG_arg_variable ] [otherBitmap] [line 9]
!33 = metadata !{metadata !"0x101\00info\0067108874\000", metadata !7, metadata !5, metadata !15} ; [ DW_TAG_arg_variable ] [info] [line 10]
!34 = metadata !{i32 10, i32 0, metadata !7, null}
!35 = metadata !{metadata !"0x101\00length\0083886091\000", metadata !7, metadata !5, metadata !19} ; [ DW_TAG_arg_variable ] [length] [line 11]
!36 = metadata !{i32 11, i32 0, metadata !7, null}
!37 = metadata !{i32 13, i32 0, metadata !7, null}
!38 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}