llvm-6502/test/DebugInfo/inheritance.ll

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; RUN: llc %s -o /dev/null
; PR 2613.
%struct.__class_type_info_pseudo = type { %struct.__type_info_pseudo }
%struct.__type_info_pseudo = type { i8*, i8* }
%struct.test1 = type { i32 (...)** }
@_ZTV5test1 = weak_odr constant [4 x i32 (...)*] [i32 (...)* null, i32 (...)* bitcast (%struct.__class_type_info_pseudo* @_ZTI5test1 to i32 (...)*), i32 (...)* bitcast (void (%struct.test1*)* @_ZN5test1D1Ev to i32 (...)*), i32 (...)* bitcast (void (%struct.test1*)* @_ZN5test1D0Ev to i32 (...)*)], align 32 ; <[4 x i32 (...)*]*> [#uses=1]
@_ZTI5test1 = weak_odr constant %struct.__class_type_info_pseudo { %struct.__type_info_pseudo { i8* inttoptr (i64 add (i64 ptrtoint ([0 x i32 (...)*]* @_ZTVN10__cxxabiv117__class_type_infoE to i64), i64 16) to i8*), i8* getelementptr inbounds ([7 x i8]* @_ZTS5test1, i64 0, i64 0) } }, align 16 ; <%struct.__class_type_info_pseudo*> [#uses=1]
@_ZTVN10__cxxabiv117__class_type_infoE = external constant [0 x i32 (...)*] ; <[0 x i32 (...)*]*> [#uses=1]
@_ZTS5test1 = weak_odr constant [7 x i8] c"5test1\00" ; <[7 x i8]*> [#uses=2]
define i32 @main() nounwind ssp {
entry:
%retval = alloca i32 ; <i32*> [#uses=2]
%0 = alloca i32 ; <i32*> [#uses=2]
%tst = alloca %struct.test1 ; <%struct.test1*> [#uses=1]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata !{%struct.test1* %tst}, metadata !0, metadata !{metadata !"0x102"}), !dbg !21
call void @_ZN5test1C1Ev(%struct.test1* %tst) nounwind, !dbg !22
store i32 0, i32* %0, align 4, !dbg !23
%1 = load i32* %0, align 4, !dbg !23 ; <i32> [#uses=1]
store i32 %1, i32* %retval, align 4, !dbg !23
br label %return, !dbg !23
return: ; preds = %entry
%retval1 = load i32* %retval, !dbg !23 ; <i32> [#uses=1]
ret i32 %retval1, !dbg !23
}
define linkonce_odr void @_ZN5test1C1Ev(%struct.test1* %this) nounwind ssp align 2 {
entry:
%this_addr = alloca %struct.test1* ; <%struct.test1**> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata !{%struct.test1** %this_addr}, metadata !24, metadata !{metadata !"0x102"}), !dbg !28
store %struct.test1* %this, %struct.test1** %this_addr
%0 = load %struct.test1** %this_addr, align 8, !dbg !28 ; <%struct.test1*> [#uses=1]
%1 = getelementptr inbounds %struct.test1* %0, i32 0, i32 0, !dbg !28 ; <i32 (...)***> [#uses=1]
store i32 (...)** getelementptr inbounds ([4 x i32 (...)*]* @_ZTV5test1, i64 0, i64 2), i32 (...)*** %1, align 8, !dbg !28
br label %return, !dbg !28
return: ; preds = %entry
ret void, !dbg !29
}
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-01 18:55:02 +00:00
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
define linkonce_odr void @_ZN5test1D1Ev(%struct.test1* %this) nounwind ssp align 2 {
entry:
%this_addr = alloca %struct.test1* ; <%struct.test1**> [#uses=3]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata !{%struct.test1** %this_addr}, metadata !32, metadata !{metadata !"0x102"}), !dbg !34
store %struct.test1* %this, %struct.test1** %this_addr
%0 = load %struct.test1** %this_addr, align 8, !dbg !35 ; <%struct.test1*> [#uses=1]
%1 = getelementptr inbounds %struct.test1* %0, i32 0, i32 0, !dbg !35 ; <i32 (...)***> [#uses=1]
store i32 (...)** getelementptr inbounds ([4 x i32 (...)*]* @_ZTV5test1, i64 0, i64 2), i32 (...)*** %1, align 8, !dbg !35
br label %bb, !dbg !37
bb: ; preds = %entry
%2 = trunc i32 0 to i8, !dbg !37 ; <i8> [#uses=1]
%toBool = icmp ne i8 %2, 0, !dbg !37 ; <i1> [#uses=1]
br i1 %toBool, label %bb1, label %bb2, !dbg !37
bb1: ; preds = %bb
%3 = load %struct.test1** %this_addr, align 8, !dbg !37 ; <%struct.test1*> [#uses=1]
%4 = bitcast %struct.test1* %3 to i8*, !dbg !37 ; <i8*> [#uses=1]
call void @_ZdlPv(i8* %4) nounwind, !dbg !37
br label %bb2, !dbg !37
bb2: ; preds = %bb1, %bb
br label %return, !dbg !37
return: ; preds = %bb2
ret void, !dbg !37
}
define linkonce_odr void @_ZN5test1D0Ev(%struct.test1* %this) nounwind ssp align 2 {
entry:
%this_addr = alloca %struct.test1* ; <%struct.test1**> [#uses=3]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata !{%struct.test1** %this_addr}, metadata !38, metadata !{metadata !"0x102"}), !dbg !40
store %struct.test1* %this, %struct.test1** %this_addr
%0 = load %struct.test1** %this_addr, align 8, !dbg !41 ; <%struct.test1*> [#uses=1]
%1 = getelementptr inbounds %struct.test1* %0, i32 0, i32 0, !dbg !41 ; <i32 (...)***> [#uses=1]
store i32 (...)** getelementptr inbounds ([4 x i32 (...)*]* @_ZTV5test1, i64 0, i64 2), i32 (...)*** %1, align 8, !dbg !41
br label %bb, !dbg !43
bb: ; preds = %entry
%2 = trunc i32 1 to i8, !dbg !43 ; <i8> [#uses=1]
%toBool = icmp ne i8 %2, 0, !dbg !43 ; <i1> [#uses=1]
br i1 %toBool, label %bb1, label %bb2, !dbg !43
bb1: ; preds = %bb
%3 = load %struct.test1** %this_addr, align 8, !dbg !43 ; <%struct.test1*> [#uses=1]
%4 = bitcast %struct.test1* %3 to i8*, !dbg !43 ; <i8*> [#uses=1]
call void @_ZdlPv(i8* %4) nounwind, !dbg !43
br label %bb2, !dbg !43
bb2: ; preds = %bb1, %bb
br label %return, !dbg !43
return: ; preds = %bb2
ret void, !dbg !43
}
declare void @_ZdlPv(i8*) nounwind
!0 = metadata !{metadata !"0x100\00tst\0013\000", metadata !1, metadata !4, metadata !8} ; [ DW_TAG_auto_variable ]
!1 = metadata !{metadata !"0xb\000\000\000", metadata !44, metadata !2} ; [ DW_TAG_lexical_block ]
!2 = metadata !{metadata !"0xb\000\000\000", metadata !44, metadata !3} ; [ DW_TAG_lexical_block ]
!3 = metadata !{metadata !"0x2e\00main\00main\00main\0011\000\001\000\006\000\000\000", i32 0, metadata !4, metadata !5, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!4 = metadata !{metadata !"0x11\004\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\001\00\000\00\000", metadata !44, metadata !45, metadata !45, null, null, null} ; [ DW_TAG_compile_unit ]
!5 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !4, null, null, metadata !6, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!6 = metadata !{metadata !7}
!7 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, metadata !4} ; [ DW_TAG_base_type ]
!8 = metadata !{metadata !"0x13\00test1\001\0064\0064\000\000\000", metadata !44, metadata !4, null, metadata !9, metadata !8, null, null} ; [ DW_TAG_structure_type ] [test1] [line 1, size 64, align 64, offset 0] [def] [from ]
!9 = metadata !{metadata !10, metadata !14, metadata !18}
!10 = metadata !{metadata !"0xd\00_vptr$test1\001\0064\0064\000\000", metadata !44, metadata !8, metadata !11} ; [ DW_TAG_member ]
!11 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", metadata !4, null, metadata !12} ; [ DW_TAG_pointer_type ]
!12 = metadata !{metadata !"0xf\00__vtbl_ptr_type\000\000\000\000\000", null, metadata !4, metadata !5} ; [ DW_TAG_pointer_type ]
!13 = metadata !{metadata !"0x11\004\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\000\00\000\00\000", metadata !46, metadata !45, metadata !45, null, null, null} ; [ DW_TAG_compile_unit ]
!14 = metadata !{metadata !"0x2e\00test1\00test1\00\001\000\000\000\006\001\000\000", i32 0, metadata !8, metadata !15, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!15 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !4, null, null, metadata !16, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!16 = metadata !{null, metadata !17}
!17 = metadata !{metadata !"0xf\00\000\0064\0064\000\0064", metadata !4, null, metadata !8} ; [ DW_TAG_pointer_type ]
!18 = metadata !{metadata !"0x2e\00~test1\00~test1\00\004\000\000\001\006\000\000\000", i32 0, metadata !8, metadata !19, metadata !8, null, null, null, null} ; [ DW_TAG_subprogram ]
!19 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !4, null, null, metadata !20, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!20 = metadata !{null, metadata !17, metadata !7}
!21 = metadata !{i32 11, i32 0, metadata !1, null}
!22 = metadata !{i32 13, i32 0, metadata !1, null}
!23 = metadata !{i32 14, i32 0, metadata !1, null}
!24 = metadata !{metadata !"0x101\00this\0013\000", metadata !25, metadata !4, metadata !26} ; [ DW_TAG_arg_variable ]
!25 = metadata !{metadata !"0x2e\00test1\00test1\00_ZN5test1C1Ev\001\000\001\000\006\000\000\000", i32 0, metadata !4, metadata !15, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!26 = metadata !{metadata !"0x26\00\000\0064\0064\000\0064", metadata !4, null, metadata !27} ; [ DW_TAG_const_type ]
!27 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", metadata !4, null, metadata !8} ; [ DW_TAG_pointer_type ]
!28 = metadata !{i32 1, i32 0, metadata !25, null}
!29 = metadata !{i32 1, i32 0, metadata !30, null}
!30 = metadata !{metadata !"0xb\000\000\000", metadata !44, metadata !31} ; [ DW_TAG_lexical_block ]
!31 = metadata !{metadata !"0xb\000\000\000", metadata !44, metadata !25} ; [ DW_TAG_lexical_block ]
!32 = metadata !{metadata !"0x101\00this\004\000", metadata !33, metadata !4, metadata !26} ; [ DW_TAG_arg_variable ]
!33 = metadata !{metadata !"0x2e\00~test1\00~test1\00_ZN5test1D1Ev\004\000\001\001\006\000\000\000", i32 0, metadata !8, metadata !15, metadata !8, null, null, null, null} ; [ DW_TAG_subprogram ]
!34 = metadata !{i32 4, i32 0, metadata !33, null}
!35 = metadata !{i32 5, i32 0, metadata !36, null}
!36 = metadata !{metadata !"0xb\000\000\000", metadata !44, metadata !33} ; [ DW_TAG_lexical_block ]
!37 = metadata !{i32 6, i32 0, metadata !36, null}
!38 = metadata !{metadata !"0x101\00this\004\000", metadata !39, metadata !4, metadata !26} ; [ DW_TAG_arg_variable ]
!39 = metadata !{metadata !"0x2e\00~test1\00~test1\00_ZN5test1D0Ev\004\000\001\001\006\000\000\000", i32 0, metadata !8, metadata !15, metadata !8, null, null, null, null} ; [ DW_TAG_subprogram ]
!40 = metadata !{i32 4, i32 0, metadata !39, null}
!41 = metadata !{i32 5, i32 0, metadata !42, null}
!42 = metadata !{metadata !"0xb\000\000\000", metadata !44, metadata !39} ; [ DW_TAG_lexical_block ]
!43 = metadata !{i32 6, i32 0, metadata !42, null}
!44 = metadata !{metadata !"inheritance.cpp", metadata !"/tmp/"}
!45 = metadata !{i32 0}
!46 = metadata !{metadata !"<built-in>", metadata !"/tmp/"}