Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100586 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 89 insertions, 0 deletions

diff --git a/test/DebugInfo/2010-04-06-NestedFnDbgInfo.ll b/test/DebugInfo/2010-04-06-NestedFnDbgInfo.ll
new file mode 100644
index 0000000000..dd6c5a965e
--- /dev/null
+++ b/test/DebugInfo/2010-04-06-NestedFnDbgInfo.ll
@@ -0,0 +1,89 @@
+; RUN: llvm-as < %s | llc -asm-verbose -O0 | grep AT_specification | count 2
+; Radar 7833483
+; Do not emit AT_specification for nested function foo.
+
+%class.A = type { i8 }
+%class.B = type { i8 }
+
+define i32 @main() ssp {
+entry:
+  %retval = alloca i32, align 4                   ; <i32*> [#uses=3]
+  %b = alloca %class.A, align 1                   ; <%class.A*> [#uses=1]
+  store i32 0, i32* %retval
+  call void @llvm.dbg.declare(metadata !{%class.A* %b}, metadata !0), !dbg !14
+  %call = call i32 @_ZN1B2fnEv(%class.A* %b), !dbg !15 ; <i32> [#uses=1]
+  store i32 %call, i32* %retval, !dbg !15
+  %0 = load i32* %retval, !dbg !16                ; <i32> [#uses=1]
+  ret i32 %0, !dbg !16
+}
+
+declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
+
+define linkonce_odr i32 @_ZN1B2fnEv(%class.A* %this) ssp align 2 {
+entry:
+  %retval = alloca i32, align 4                   ; <i32*> [#uses=2]
+  %this.addr = alloca %class.A*, align 8          ; <%class.A**> [#uses=2]
+  %a = alloca %class.A, align 1                   ; <%class.A*> [#uses=1]
+  %i = alloca i32, align 4                        ; <i32*> [#uses=2]
+  store %class.A* %this, %class.A** %this.addr
+  call void @llvm.dbg.declare(metadata !{%class.A** %this.addr}, metadata !17), !dbg !18
+  %this1 = load %class.A** %this.addr             ; <%class.A*> [#uses=0]
+  call void @llvm.dbg.declare(metadata !{%class.A* %a}, metadata !19), !dbg !27
+  call void @llvm.dbg.declare(metadata !{i32* %i}, metadata !28), !dbg !29
+  %call = call i32 @_ZZN1B2fnEvEN1A3fooEv(%class.A* %a), !dbg !30 ; <i32> [#uses=1]
+  store i32 %call, i32* %i, !dbg !30
+  %tmp = load i32* %i, !dbg !31                   ; <i32> [#uses=1]
+  store i32 %tmp, i32* %retval, !dbg !31
+  %0 = load i32* %retval, !dbg !32                ; <i32> [#uses=1]
+  ret i32 %0, !dbg !32
+}
+
+define internal i32 @_ZZN1B2fnEvEN1A3fooEv(%class.A* %this) ssp align 2 {
+entry:
+  %retval = alloca i32, align 4                   ; <i32*> [#uses=2]
+  %this.addr = alloca %class.A*, align 8          ; <%class.A**> [#uses=2]
+  store %class.A* %this, %class.A** %this.addr
+  call void @llvm.dbg.declare(metadata !{%class.A** %this.addr}, metadata !33), !dbg !34
+  %this1 = load %class.A** %this.addr             ; <%class.A*> [#uses=0]
+  store i32 42, i32* %retval, !dbg !35
+  %0 = load i32* %retval, !dbg !35                ; <i32> [#uses=1]
+  ret i32 %0, !dbg !35
+}
+
+!0 = metadata !{i32 524544, metadata !1, metadata !"b", metadata !3, i32 16, metadata !8} ; [ DW_TAG_auto_variable ]
+!1 = metadata !{i32 524299, metadata !2, i32 15, i32 12} ; [ DW_TAG_lexical_block ]
+!2 = metadata !{i32 524334, i32 0, metadata !3, metadata !"main", metadata !"main", metadata !"main", metadata !3, i32 15, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i1 false} ; [ DW_TAG_subprogram ]
+!3 = metadata !{i32 524329, metadata !"one.cc", metadata !"/tmp", metadata !4} ; [ DW_TAG_file_type ]
+!4 = metadata !{i32 524305, i32 0, i32 4, metadata !"one.cc", metadata !"/tmp", metadata !"clang 1.5", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
+!5 = metadata !{i32 524309, metadata !3, metadata !"", metadata !3, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null} ; [ DW_TAG_subroutine_type ]
+!6 = metadata !{metadata !7}
+!7 = metadata !{i32 524324, metadata !3, metadata !"int", metadata !3, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
+!8 = metadata !{i32 524290, metadata !3, metadata !"B", metadata !3, i32 2, i64 8, i64 8, i64 0, i32 0, null, metadata !9, i32 0, null} ; [ DW_TAG_class_type ]
+!9 = metadata !{metadata !10}
+!10 = metadata !{i32 524334, i32 0, metadata !8, metadata !"fn", metadata !"fn", metadata !"_ZN1B2fnEv", metadata !3, i32 4, metadata !11, i1 false, i1 true, i32 0, i32 0, null, i1 false} ; [ DW_TAG_subprogram ]
+!11 = metadata !{i32 524309, metadata !3, metadata !"", metadata !3, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !12, i32 0, null} ; [ DW_TAG_subroutine_type ]
+!12 = metadata !{metadata !7, metadata !13}
+!13 = metadata !{i32 524303, metadata !3, metadata !"", metadata !3, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !8} ; [ DW_TAG_pointer_type ]
+!14 = metadata !{i32 16, i32 5, metadata !1, null}
+!15 = metadata !{i32 17, i32 3, metadata !1, null}
+!16 = metadata !{i32 18, i32 1, metadata !2, null}
+!17 = metadata !{i32 524545, metadata !10, metadata !"this", metadata !3, i32 4, metadata !13} ; [ DW_TAG_arg_variable ]
+!18 = metadata !{i32 4, i32 7, metadata !10, null}
+!19 = metadata !{i32 524544, metadata !20, metadata !"a", metadata !3, i32 9, metadata !21} ; [ DW_TAG_auto_variable ]
+!20 = metadata !{i32 524299, metadata !10, i32 4, i32 12} ; [ DW_TAG_lexical_block ]
+!21 = metadata !{i32 524290, metadata !10, metadata !"A", metadata !3, i32 5, i64 8, i64 8, i64 0, i32 0, null, metadata !22, i32 0, null} ; [ DW_TAG_class_type ]
+!22 = metadata !{metadata !23}
+!23 = metadata !{i32 524334, i32 0, metadata !21, metadata !"foo", metadata !"foo", metadata !"_ZZN1B2fnEvEN1A3fooEv", metadata !3, i32 7, metadata !24, i1 false, i1 true, i32 0, i32 0, null, i1 false} ; [ DW_TAG_subprogram ]
+!24 = metadata !{i32 524309, metadata !3, metadata !"", metadata !3, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !25, i32 0, null} ; [ DW_TAG_subroutine_type ]
+!25 = metadata !{metadata !7, metadata !26}
+!26 = metadata !{i32 524303, metadata !3, metadata !"", metadata !3, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !21} ; [ DW_TAG_pointer_type ]
+!27 = metadata !{i32 9, i32 7, metadata !20, null}
+!28 = metadata !{i32 524544, metadata !20, metadata !"i", metadata !3, i32 10, metadata !7} ; [ DW_TAG_auto_variable ]
+!29 = metadata !{i32 10, i32 9, metadata !20, null}
+!30 = metadata !{i32 10, i32 5, metadata !20, null}
+!31 = metadata !{i32 11, i32 5, metadata !20, null}
+!32 = metadata !{i32 12, i32 3, metadata !10, null}
+!33 = metadata !{i32 524545, metadata !23, metadata !"this", metadata !3, i32 7, metadata !26} ; [ DW_TAG_arg_variable ]
+!34 = metadata !{i32 7, i32 11, metadata !23, null}
+!35 = metadata !{i32 7, i32 19, metadata !36, null}
+!36 = metadata !{i32 524299, metadata !23, i32 7, i32 17} ; [ DW_TAG_lexical_block ]