1 ; REQUIRES: object-emission
2 ; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s
4 ; Generated from the following source compiled with clang++ -gmlt:
6 ; void __attribute__((section("__TEXT,__bar"))) f2() {}
7 ; void __attribute__((always_inline)) f3() { f1(); }
11 ; * -gmlt includes no DW_TAG_subprograms for subprograms without inlined
13 ; * yet still produces DW_AT_ranges and a range list in debug_ranges that
14 ; describes those subprograms
16 ; CHECK: DW_TAG_compile_unit
17 ; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000
18 ; CHECK-NOT: {{DW_TAG|NULL}}
20 ; Omitting the subprograms without inlined subroutines is not possible
21 ; currently on Darwin as dsymutil will drop the whole CU if it has no subprograms
22 ; (which happens with this optimization if there are no inlined subroutines).
24 ; DARWIN: DW_TAG_subprogram
26 ; DARWIN: DW_AT_name {{.*}} "f1"
27 ; DARWIN-NOT: {{DW_TAG|NULL}}
28 ; DARWIN: DW_TAG_subprogram
30 ; DARWIN: DW_AT_name {{.*}} "f2"
31 ; DARWIN-NOT: {{DW_TAG|NULL}}
32 ; DARWIN: DW_TAG_subprogram
34 ; Can't check the abstract_origin value across the DARWIN/CHECK checking and
35 ; ordering, so don't bother - just trust me, it refers to f3 down there.
36 ; DARWIN: DW_AT_abstract_origin
37 ; DARWIN-NOT: {{DW_TAG|NULL}}
40 ; FIXME: Emitting separate abstract definitions is inefficient when we could
41 ; just attach the DW_AT_name to the inlined_subroutine directly. Except that
42 ; would produce many string relocations. Implement string indexing in the
43 ; skeleton CU to address the relocation problem, then remove abstract
44 ; definitions from -gmlt here.
46 ; CHECK: DW_TAG_subprogram
47 ; CHECK-NEXT: DW_AT_name {{.*}} "f3"
49 ; FIXME: We don't really need DW_AT_inline, consumers can ignore this due to
50 ; the absence of high_pc/low_pc/ranges and know that they just need it for
51 ; retrieving the name of a concrete inlined instance
53 ; CHECK-NOT: {{DW_TAG|DW_AT|NULL}}
55 ; Check that we only provide the minimal attributes on a subprogram to save space.
56 ; CHECK: DW_TAG_subprogram
57 ; CHECK-NEXT: DW_AT_low_pc
58 ; CHECK-NEXT: DW_AT_high_pc
59 ; CHECK-NEXT: DW_AT_name
60 ; CHECK-NOT: {{DW_TAG|DW_AT}}
61 ; CHECK: DW_TAG_inlined_subroutine
63 ; As mentioned above - replace DW_AT_abstract_origin with DW_AT_name to save
64 ; space once we have support for string indexing in non-dwo sections
66 ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f3"
67 ; CHECK-NEXT: DW_AT_low_pc
68 ; CHECK-NEXT: DW_AT_high_pc
69 ; CHECK-NEXT: DW_AT_call_file
70 ; CHECK-NEXT: DW_AT_call_line
72 ; Make sure we don't have any other subprograms here (subprograms with no
73 ; inlined subroutines are omitted by design to save space)
75 ; CHECK-NOT: {{DW_TAG|DW_AT}}
77 ; CHECK-NOT: {{DW_TAG|DW_AT}}
81 ; CHECK: .debug_ranges contents:
83 ; ... some addresses (depends on platform (such as platforms with function
84 ; reordering in the linker), and looks wonky on platforms with zero values
85 ; written in relocation places (dumper needs to be fixed to read the
86 ; relocations rather than interpret that as the end of a range list))
88 ; CHECK: 00000000 <End of list>
91 ; Check that we don't emit any pubnames or pubtypes under -gmlt
92 ; CHECK: .debug_pubnames contents:
95 ; CHECK: .debug_pubtypes contents:
98 ; CHECK: .apple{{.*}} contents:
100 ; Function Attrs: nounwind uwtable
101 define void @_Z2f1v() #0 {
106 ; Function Attrs: nounwind uwtable
107 define void @_Z2f2v() #0 section "__TEXT,__bar" {
112 ; Function Attrs: alwaysinline nounwind uwtable
113 define void @_Z2f3v() #1 {
115 call void @_Z2f1v(), !dbg !15
119 ; Function Attrs: nounwind uwtable
120 define void @_Z2f4v() #0 {
122 call void @_Z2f1v() #2, !dbg !17
126 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
127 attributes #1 = { alwaysinline nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
128 attributes #2 = { nounwind }
131 !llvm.module.flags = !{!10, !11}
134 !0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
135 !1 = !MDFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo")
137 !3 = !{!4, !7, !8, !9}
138 !4 = !MDSubprogram(name: "f1", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, function: void ()* @_Z2f1v, variables: !2)
139 !5 = !MDFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo")
140 !6 = !MDSubroutineType(types: !2)
141 !7 = !MDSubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !5, type: !6, function: void ()* @_Z2f2v, variables: !2)
142 !8 = !MDSubprogram(name: "f3", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !5, type: !6, function: void ()* @_Z2f3v, variables: !2)
143 !9 = !MDSubprogram(name: "f4", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !5, type: !6, function: void ()* @_Z2f4v, variables: !2)
144 !10 = !{i32 2, !"Dwarf Version", i32 4}
145 !11 = !{i32 2, !"Debug Info Version", i32 3}
146 !12 = !{!"clang version 3.6.0 "}
147 !13 = !MDLocation(line: 1, column: 12, scope: !4)
148 !14 = !MDLocation(line: 2, column: 53, scope: !7)
149 !15 = !MDLocation(line: 3, column: 44, scope: !8)
150 !16 = !MDLocation(line: 3, column: 50, scope: !8)
151 !17 = !MDLocation(line: 3, column: 44, scope: !8, inlinedAt: !18)
152 !18 = !MDLocation(line: 4, column: 13, scope: !9)
153 !19 = !MDLocation(line: 4, column: 19, scope: !9)