1 ; RUN: llc -mtriple=x86_64-linux -split-dwarf-cross-cu-references -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s
2 ; RUN: llvm-objdump -r %t | FileCheck --check-prefix=CHECK --check-prefix=RELO_CROSS %s
3 ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=CROSS %s
4 ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL %s
6 ; RUN: llc -mtriple=x86_64-linux -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s
7 ; RUN: llvm-objdump -r %t | FileCheck --check-prefix=CHECK %s
8 ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=NOCROSS %s
9 ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL %s
11 ; Testing cross-CU references for types, subprograms, and variables
12 ; Built from code something like this:
14 ; struct t1 { int i; };
16 ; __attribute__((always_inline)) void f1(t1 t) {
23 ; struct t1 { int i; };
28 ; $ clang++-tot -emit-llvm -S {foo,bar}.cpp -g
29 ; $ llvm-link-tot {foo,bar}.ll -S -o foobar.ll
30 ; $ clang++-tot -emit-llvm foobar.ll -o foobar.opt.ll -S -c
32 ; Then manually removing the original f1 definition, to simplify the DWARF a bit
33 ; (so it only has the inlined definitions, no concrete definition)
36 ; * no relocations are emitted for the debug_info.dwo section no matter what
37 ; * one debug_info->debug_info relocation in debug_info no matter what (for
38 ; split dwarf inlining)
39 ; * debug_info uses relocations and ref_addr no matter what
40 ; * debug_info.dwo uses relocations for types as well as abstract subprograms
41 ; and variables when -split-dwarf-cross-cu-references is used
42 ; * debug_info.dwo contains duplicate types, abstract subprograms and abstract
43 ; variables otherwise to avoid the need for cross-cu references
45 ; DWO: .debug_info.dwo contents:
46 ; CHECK-NOT: .rel{{a?}}.debug_info.dwo
47 ; CHECK: RELOCATION RECORDS FOR [.debug_info]:
48 ; CHECK-NOT: RELOCATION RECORDS
49 ; Expect one relocation in debug_info, from the inlined f1 in foo to its
50 ; abstract origin in bar
51 ; RELO_CROSS: R_X86_64_32 .debug_info
52 ; Expect no relocations in debug_info when disabling multiple CUs in Split DWARF
53 ; CHECK-NOT: .debug_info
54 ; CHECK: RELOCATION RECORDS
55 ; CHECK-NOT: .rel{{a?}}.debug_info.dwo
58 ; ALL: DW_TAG_compile_unit
59 ; DWO: DW_AT_name {{.*}} "foo.cpp"
60 ; ALL: 0x[[F1:.*]]: DW_TAG_subprogram
61 ; ALL: DW_AT_name {{.*}} "f1"
62 ; DWO: 0x[[F1T:.*]]: DW_TAG_formal_parameter
63 ; DWO: DW_AT_name {{.*}} "t"
64 ; DWO: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1:.*]]}
66 ; DWO: 0x[[T1]]: DW_TAG_structure_type
67 ; DWO: DW_AT_name {{.*}} "t1"
68 ; ALL: DW_TAG_subprogram
69 ; ALL: DW_AT_name {{.*}} "foo"
70 ; DWO: DW_TAG_formal_parameter
71 ; DWO: DW_AT_name {{.*}} "t"
72 ; DWO: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1]]}
73 ; ALL: DW_TAG_inlined_subroutine
74 ; ALL: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1]]}
75 ; DWO: DW_TAG_formal_parameter
76 ; DWO: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1T]]}
78 ; NOCROSS-NOT: DW_TAG_compile_unit
80 ; CROSS: DW_TAG_compile_unit
81 ; CROSS: DW_AT_name {{.*}} "bar.cpp"
82 ; ALL: DW_TAG_subprogram
83 ; ALL: DW_AT_name {{.*}} "bar"
84 ; DWO: DW_TAG_formal_parameter
85 ; DWO: DW_AT_name {{.*}} "t"
86 ; CROSS: DW_AT_type [DW_FORM_ref_addr] (0x00000000[[T1]]
87 ; NOCROSS: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1]]}
88 ; ALL: DW_TAG_inlined_subroutine
89 ; CROSS: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1]]
90 ; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1]]}
91 ; DWO: DW_TAG_formal_parameter
92 ; CROSS: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1T]]
93 ; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1T]]
95 %struct.t1 = type { i32 }
97 ; Function Attrs: nounwind readnone speculatable
98 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
100 declare void @_Z1fv() #2
102 ; Function Attrs: noinline uwtable
103 define void @_Z3foo2t1(i32 %t.coerce) #3 !dbg !20 {
105 %t.i = alloca %struct.t1, align 4
106 call void @llvm.dbg.declare(metadata ptr %t.i, metadata !15, metadata !16), !dbg !21
107 %t = alloca %struct.t1, align 4
108 %agg.tmp = alloca %struct.t1, align 4
109 store i32 %t.coerce, ptr %t, align 4
110 call void @llvm.dbg.declare(metadata ptr %t, metadata !23, metadata !16), !dbg !24
111 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %t, i64 4, i1 false), !dbg !25
112 %0 = load i32, ptr %agg.tmp, align 4, !dbg !26
113 store i32 %0, ptr %t.i, align 4
114 call void @_Z1fv(), !dbg !27
118 ; Function Attrs: argmemonly nounwind
119 declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #4
121 ; Function Attrs: noinline uwtable
122 define void @_Z3bar2t1(i32 %t.coerce) #3 !dbg !29 {
124 %t.i = alloca %struct.t1, align 4
125 call void @llvm.dbg.declare(metadata ptr %t.i, metadata !15, metadata !16), !dbg !30
126 %t = alloca %struct.t1, align 4
127 %agg.tmp = alloca %struct.t1, align 4
128 store i32 %t.coerce, ptr %t, align 4
129 call void @llvm.dbg.declare(metadata ptr %t, metadata !32, metadata !16), !dbg !33
130 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %t, i64 4, i1 false), !dbg !34
131 %0 = load i32, ptr %agg.tmp, align 4, !dbg !35
132 store i32 %0, ptr %t.i, align 4
133 call void @_Z1fv(), !dbg !36
137 !llvm.dbg.cu = !{!0, !3}
138 !llvm.ident = !{!5, !5}
139 !llvm.module.flags = !{!6, !7}
141 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: true)
142 !1 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
144 !3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: true)
145 !4 = !DIFile(filename: "bar.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
146 !5 = !{!"clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)"}
147 !6 = !{i32 2, !"Dwarf Version", i32 4}
148 !7 = !{i32 2, !"Debug Info Version", i32 3}
149 !8 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f12t1", scope: !1, file: !1, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
150 !9 = !DISubroutineType(types: !10)
152 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !1, line: 1, size: 32, elements: !12, identifier: "_ZTS2t1")
154 !13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 1, baseType: !14, size: 32)
155 !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
156 !15 = !DILocalVariable(name: "t", arg: 1, scope: !8, file: !1, line: 3, type: !11)
157 !16 = !DIExpression()
158 !17 = !DILocation(line: 3, column: 43, scope: !8)
159 !18 = !DILocation(line: 4, column: 3, scope: !8)
160 !19 = !DILocation(line: 5, column: 1, scope: !8)
161 !20 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foo2t1", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
162 !21 = !DILocation(line: 3, column: 43, scope: !8, inlinedAt: !22)
163 !22 = distinct !DILocation(line: 7, column: 3, scope: !20)
164 !23 = !DILocalVariable(name: "t", arg: 1, scope: !20, file: !1, line: 6, type: !11)
165 !24 = !DILocation(line: 6, column: 13, scope: !20)
166 !25 = !DILocation(line: 7, column: 6, scope: !20)
167 !26 = !DILocation(line: 7, column: 3, scope: !20)
168 !27 = !DILocation(line: 4, column: 3, scope: !8, inlinedAt: !22)
169 !28 = !DILocation(line: 8, column: 1, scope: !20)
170 !29 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bar2t1", scope: !4, file: !4, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !3, retainedNodes: !2)
171 !30 = !DILocation(line: 3, column: 43, scope: !8, inlinedAt: !31)
172 !31 = distinct !DILocation(line: 4, column: 3, scope: !29)
173 !32 = !DILocalVariable(name: "t", arg: 1, scope: !29, file: !4, line: 3, type: !11)
174 !33 = !DILocation(line: 3, column: 13, scope: !29)
175 !34 = !DILocation(line: 4, column: 6, scope: !29)
176 !35 = !DILocation(line: 4, column: 3, scope: !29)
177 !36 = !DILocation(line: 4, column: 3, scope: !8, inlinedAt: !31)
178 !37 = !DILocation(line: 5, column: 1, scope: !29)