1 ; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
2 ; RUN: llvm-dwarfdump %t | FileCheck %s
3 ; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s
5 ; CHECK: .debug_info contents:
6 ; CHECK: DW_TAG_compile_unit
7 ; CHECK-NEXT: DW_AT_stmt_list
8 ; CHECK-NEXT: DW_AT_GNU_dwo_name
9 ; CHECK-NEXT: DW_AT_comp_dir
10 ; CHECK-NEXT: DW_AT_GNU_dwo_id
11 ; CHECK-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset] (0x00000000)
14 ; CHECK: .debug_info.dwo contents:
15 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[A:0x[0-9a-z]*]])
16 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[E:0x[0-9a-z]*]])
17 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[B:0x[0-9a-z]*]])
18 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[D:0x[0-9a-z]*]])
19 ; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x000000a0)
20 ; CHECK: .debug_loc contents:
21 ; CHECK-NOT: Beginning address offset
22 ; CHECK: .debug_loc.dwo contents:
24 ; Don't assume these locations are entirely correct - feel free to update them
25 ; if they've changed due to a bugfix, change in register allocation, etc.
27 ; CHECK: [[A]]: Beginning address index: 2
28 ; CHECK-NEXT: Length: 199
29 ; CHECK-NEXT: Location description: 11 00
31 ; CHECK-NEXT: Beginning address index: 3
32 ; CHECK-NEXT: Length: 23
33 ; CHECK-NEXT: Location description: 50 93 04
34 ; CHECK: [[E]]: Beginning address index: 4
35 ; CHECK-NEXT: Length: 21
36 ; CHECK-NEXT: Location description: 50 93 04
37 ; CHECK: [[B]]: Beginning address index: 5
38 ; CHECK-NEXT: Length: 19
39 ; CHECK-NEXT: Location description: 50 93 04
40 ; CHECK: [[D]]: Beginning address index: 6
41 ; CHECK-NEXT: Length: 23
42 ; CHECK-NEXT: Location description: 50 93 04
44 ; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo)
45 ; HDR-NOT: .rela.{{.*}}.dwo
47 ; Make sure we have enough stuff in the debug_addr to cover the address indexes
48 ; (6 is the last index in debug_loc.dwo, making 7 entries of 8 bytes each, 7 * 8
49 ; == 56 base 10 == 38 base 16)
51 ; HDR: .debug_addr 00000038
52 ; HDR-NOT: .rela.{{.*}}.dwo
57 ; static void foo (int p)
62 ; for (a = 0; a < 30; a++)
63 ; for (d = 0; d < 30; d++)
64 ; for (b = 0; b < 30; b++)
65 ; for (e = 0; e < 30; e++)
80 ; clang -g -S -gsplit-dwarf -O1 small.c
82 @c = external global i32
84 ; Function Attrs: nounwind uwtable
85 define void @bar() #0 {
87 tail call fastcc void @foo(), !dbg !27
91 ; Function Attrs: nounwind uwtable
92 define internal fastcc void @foo() #0 {
94 tail call void @llvm.dbg.value(metadata !29, i64 0, metadata !13), !dbg !30
95 tail call void @llvm.dbg.value(metadata !44, i64 0, metadata !14), !dbg !31
96 %c.promoted9 = load i32* @c, align 4, !dbg !32, !tbaa !33
97 br label %for.cond1.preheader, !dbg !31
99 for.cond1.preheader: ; preds = %for.inc16, %entry
100 %and.lcssa.lcssa.lcssa10 = phi i32 [ %c.promoted9, %entry ], [ %and, %for.inc16 ]
101 %a.08 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ]
102 br label %for.cond4.preheader, !dbg !37
104 for.cond4.preheader: ; preds = %for.inc13, %for.cond1.preheader
105 %and.lcssa.lcssa7 = phi i32 [ %and.lcssa.lcssa.lcssa10, %for.cond1.preheader ], [ %and, %for.inc13 ]
106 %d.06 = phi i32 [ 0, %for.cond1.preheader ], [ %inc14, %for.inc13 ]
107 br label %for.cond7.preheader, !dbg !38
109 for.cond7.preheader: ; preds = %for.inc10, %for.cond4.preheader
110 %and.lcssa5 = phi i32 [ %and.lcssa.lcssa7, %for.cond4.preheader ], [ %and, %for.inc10 ]
111 %b.03 = phi i32 [ 0, %for.cond4.preheader ], [ %inc11, %for.inc10 ]
112 br label %for.body9, !dbg !39
114 for.body9: ; preds = %for.body9, %for.cond7.preheader
115 %and2 = phi i32 [ %and.lcssa5, %for.cond7.preheader ], [ %and, %for.body9 ], !dbg !40
116 %e.01 = phi i32 [ 0, %for.cond7.preheader ], [ %inc, %for.body9 ]
117 tail call void @llvm.dbg.value(metadata !41, i64 0, metadata !19), !dbg !40
118 %and = and i32 %and2, 1, !dbg !32
119 %inc = add i32 %e.01, 1, !dbg !39
120 tail call void @llvm.dbg.value(metadata !{i32 %inc}, i64 0, metadata !18), !dbg !39
121 %exitcond = icmp eq i32 %inc, 30, !dbg !39
122 br i1 %exitcond, label %for.inc10, label %for.body9, !dbg !39
124 for.inc10: ; preds = %for.body9
125 %inc11 = add nsw i32 %b.03, 1, !dbg !38
126 tail call void @llvm.dbg.value(metadata !{i32 %inc11}, i64 0, metadata !15), !dbg !38
127 %exitcond11 = icmp eq i32 %inc11, 30, !dbg !38
128 br i1 %exitcond11, label %for.inc13, label %for.cond7.preheader, !dbg !38
130 for.inc13: ; preds = %for.inc10
131 %inc14 = add i32 %d.06, 1, !dbg !37
132 tail call void @llvm.dbg.value(metadata !{i32 %inc14}, i64 0, metadata !16), !dbg !37
133 %exitcond12 = icmp eq i32 %inc14, 30, !dbg !37
134 br i1 %exitcond12, label %for.inc16, label %for.cond4.preheader, !dbg !37
136 for.inc16: ; preds = %for.inc13
137 %inc17 = add nsw i32 %a.08, 1, !dbg !31
138 tail call void @llvm.dbg.value(metadata !{i32 %inc17}, i64 0, metadata !14), !dbg !31
139 %exitcond13 = icmp eq i32 %inc17, 30, !dbg !31
140 br i1 %exitcond13, label %for.end18, label %for.cond1.preheader, !dbg !31
142 for.end18: ; preds = %for.inc16
143 store i32 %and, i32* @c, align 4, !dbg !32, !tbaa !33
147 ; Function Attrs: nounwind readnone
148 declare void @llvm.dbg.value(metadata, i64, metadata) #1
150 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
151 attributes #1 = { nounwind readnone }
154 !llvm.module.flags = !{!26, !43}
156 !0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.4 (trunk 191700) (llvm/trunk 191710)", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"small.dwo"} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/echristo/tmp/small.c] [DW_LANG_C99]
157 !1 = metadata !{metadata !"small.c", metadata !"/usr/local/google/home/echristo/tmp"}
159 !3 = metadata !{metadata !4, metadata !8}
160 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"bar", metadata !"bar", metadata !"", i32 18, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 true, void ()* @bar, null, null, metadata !2, i32 19} ; [ DW_TAG_subprogram ] [line 18] [def] [scope 19] [bar]
161 !5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/usr/local/google/home/echristo/tmp/small.c]
162 !6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
163 !7 = metadata !{null}
164 !8 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"foo", metadata !"foo", metadata !"", i32 2, metadata !9, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @foo, null, null, metadata !12, i32 3} ; [ DW_TAG_subprogram ] [line 2] [local] [def] [scope 3] [foo]
165 !9 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
166 !10 = metadata !{null, metadata !11}
167 !11 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
168 !12 = metadata !{metadata !13, metadata !14, metadata !15, metadata !16, metadata !18, metadata !19}
169 !13 = metadata !{i32 786689, metadata !8, metadata !"p", metadata !5, i32 16777218, metadata !11, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [p] [line 2]
170 !14 = metadata !{i32 786688, metadata !8, metadata !"a", metadata !5, i32 4, metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [a] [line 4]
171 !15 = metadata !{i32 786688, metadata !8, metadata !"b", metadata !5, i32 4, metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [b] [line 4]
172 !16 = metadata !{i32 786688, metadata !8, metadata !"d", metadata !5, i32 5, metadata !17, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [d] [line 5]
173 !17 = metadata !{i32 786468, null, null, metadata !"unsigned int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned]
174 !18 = metadata !{i32 786688, metadata !8, metadata !"e", metadata !5, i32 5, metadata !17, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [e] [line 5]
175 !19 = metadata !{i32 786688, metadata !20, metadata !"w", metadata !5, i32 12, metadata !25, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [w] [line 12]
176 !20 = metadata !{i32 786443, metadata !1, metadata !21, i32 11, i32 0, i32 4} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c]
177 !21 = metadata !{i32 786443, metadata !1, metadata !22, i32 10, i32 0, i32 3} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c]
178 !22 = metadata !{i32 786443, metadata !1, metadata !23, i32 9, i32 0, i32 2} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c]
179 !23 = metadata !{i32 786443, metadata !1, metadata !24, i32 8, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c]
180 !24 = metadata !{i32 786443, metadata !1, metadata !8, i32 7, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c]
181 !25 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
182 !26 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
183 !27 = metadata !{i32 20, i32 0, metadata !4, null}
184 !28 = metadata !{i32 21, i32 0, metadata !4, null}
185 !29 = metadata !{i32 1}
186 !30 = metadata !{i32 2, i32 0, metadata !8, null}
187 !31 = metadata !{i32 7, i32 0, metadata !24, null}
188 !32 = metadata !{i32 13, i32 0, metadata !20, null}
189 !33 = metadata !{metadata !34, metadata !34, i64 0}
190 !34 = metadata !{metadata !"int", metadata !35, i64 0}
191 !35 = metadata !{metadata !"omnipotent char", metadata !36, i64 0}
192 !36 = metadata !{metadata !"Simple C/C++ TBAA"}
193 !37 = metadata !{i32 8, i32 0, metadata !23, null} ; [ DW_TAG_imported_declaration ]
194 !38 = metadata !{i32 9, i32 0, metadata !22, null}
195 !39 = metadata !{i32 10, i32 0, metadata !21, null}
196 !40 = metadata !{i32 12, i32 0, metadata !20, null}
197 !41 = metadata !{i32* @c}
198 !42 = metadata !{i32 15, i32 0, metadata !8, null}
199 !43 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
200 !44 = metadata !{i32 0}