1 ; RUN: llc -split-dwarf-file=foo.dwo -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
2 ; RUN: llvm-dwarfdump -v %t | FileCheck %s
3 ; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s
5 ; RUN: llc -dwarf-version=5 -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
6 ; RUN: llvm-dwarfdump -v %t | FileCheck --check-prefix=V5RNGLISTS %s
8 ; RUN: llc -O0 %s -mtriple=x86_64-unknown-linux-gnu -stop-after=livedebugvalues -o -| FileCheck --check-prefix=CHECK-MIR %s
10 ; LiveDebugValues should produce DBG_VALUEs for variable "b" in successive
11 ; blocks once we recognize that it is spilled.
12 ; CHECK-MIR: ![[BDIVAR:[0-9]+]] = !DILocalVariable(name: "b"
13 ; CHECK-MIR: DBG_VALUE $rsp, 0, ![[BDIVAR]], !DIExpression(DW_OP_constu, 32, DW_OP_minus)
14 ; CHECK-MIR-LABEL: bb.6.for.inc13:
15 ; CHECK-MIR: DBG_VALUE $rsp, 0, ![[BDIVAR]], !DIExpression(DW_OP_constu, 32, DW_OP_minus)
16 ; CHECK-MIR-LABEL: bb.7.for.inc16:
17 ; CHECK-MIR: DBG_VALUE $rsp, 0, ![[BDIVAR]], !DIExpression(DW_OP_constu, 32, DW_OP_minus)
20 ; CHECK: .debug_info contents:
21 ; CHECK: DW_TAG_compile_unit
22 ; CHECK-NEXT: DW_AT_stmt_list
23 ; CHECK-NEXT: DW_AT_comp_dir
24 ; CHECK-NEXT: DW_AT_GNU_dwo_name
25 ; CHECK-NEXT: DW_AT_GNU_dwo_id
26 ; CHECK-NEXT: DW_AT_GNU_ranges_base
27 ; CHECK-NEXT: DW_AT_low_pc
28 ; CHECK-NEXT: DW_AT_high_pc
29 ; CHECK-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset] (0x00000000)
31 ; CHECK: .debug_info.dwo contents:
32 ; CHECK: DW_TAG_formal_parameter
33 ; CHECK-NEXT: DW_AT_const_value [DW_FORM_sdata] (1)
34 ; CHECK-NEXT: DW_AT_name {{.*}} "p")
35 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[A:0x[0-9a-z]*]]
36 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[E:0x[0-9a-z]*]]
37 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[B:0x[0-9a-z]*]]
38 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[D:0x[0-9a-z]*]]
39 ; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000
40 ; CHECK-NOT: .debug_loc contents:
41 ; CHECK-NOT: Beginning address offset
42 ; CHECK: .debug_loc.dwo contents:
44 ; Don't assume these locations are entirely correct - feel free to update them
45 ; if they've changed due to a bugfix, change in register allocation, etc.
48 ; CHECK-NEXT: Addr idx 2 (w/ length 169): DW_OP_consts +0, DW_OP_stack_value
49 ; CHECK-NEXT: Addr idx 3 (w/ length 15): DW_OP_reg0 RAX
50 ; CHECK-NEXT: Addr idx 4 (w/ length 18): DW_OP_breg7 RSP-8
52 ; CHECK-NEXT: Addr idx 5 (w/ length 9): DW_OP_reg0 RAX
53 ; CHECK-NEXT: Addr idx 6 (w/ length 98): DW_OP_breg7 RSP-44
55 ; CHECK-NEXT: Addr idx 7 (w/ length 15): DW_OP_reg0 RAX
56 ; CHECK-NEXT: Addr idx 8 (w/ length 66): DW_OP_breg7 RSP-32
58 ; CHECK-NEXT: Addr idx 9 (w/ length 15): DW_OP_reg0 RAX
59 ; CHECK-NEXT: Addr idx 10 (w/ length 42): DW_OP_breg7 RSP-20
61 ; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo)
62 ; HDR-NOT: .rela.{{.*}}.dwo
64 ; Make sure we have enough stuff in the debug_addr to cover the address indexes
65 ; (10 is the last index in debug_loc.dwo, making 11 entries of 8 bytes each,
66 ; 11 * 8 == 88 base 10 == 58 base 16)
68 ; HDR: .debug_addr 00000058
69 ; HDR-NOT: .rela.{{.*}}.dwo
71 ; Check for the existence of a DWARF v5-style range list table in the .debug_rnglists
72 ; section and that the compile unit has a DW_AT_rnglists_base attribute.
73 ; The table should contain at least one rangelist with at least 2 individual ranges.
75 ; V5RNGLISTS: .debug_info contents:
76 ; V5RNGLISTS: DW_TAG_compile_unit
77 ; V5RNGLISTS-NOT: DW_TAG
78 ; V5RNGLISTS: DW_AT_rnglists_base [DW_FORM_sec_offset] (0x0000000c)
79 ; V5RNGLISTS: .debug_rnglists contents:
80 ; V5RNGLISTS-NEXT: 0x00000000: range list header: length = 0x00000019, version = 0x0005,
81 ; V5RNGLISTS-SAME: addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000001
82 ; V5RNGLISTS-NEXT: offsets: [
83 ; V5RNGLISTS-NEXT: => 0x00000010
85 ; V5RNGLISTS-NEXT: ranges:
86 ; V5RNGLISTS-NEXT: 0x00000010: [DW_RLE_offset_pair]:
87 ; V5RNGLISTS-NEXT: 0x00000013: [DW_RLE_offset_pair]:
88 ; V5RNGLISTS: 0x{{[0-9a-f]+}}: [DW_RLE_end_of_list]
93 ; static void foo (int p)
98 ; for (a = 0; a < 30; a++)
99 ; for (d = 0; d < 30; d++)
100 ; for (b = 0; b < 30; b++)
101 ; for (e = 0; e < 30; e++)
116 ; clang -g -S -gsplit-dwarf -O1 small.c
118 @c = external global i32
120 ; Function Attrs: nounwind uwtable
121 define void @bar() #0 !dbg !4 {
123 tail call fastcc void @foo(), !dbg !27
127 ; Function Attrs: nounwind uwtable
128 define internal fastcc void @foo() #0 !dbg !8 {
130 tail call void @llvm.dbg.value(metadata i32 1, metadata !13, metadata !DIExpression()), !dbg !30
131 tail call void @llvm.dbg.value(metadata i32 0, metadata !14, metadata !DIExpression()), !dbg !31
132 %c.promoted9 = load i32, i32* @c, align 4, !dbg !32, !tbaa !33
133 br label %for.cond1.preheader, !dbg !31
135 for.cond1.preheader: ; preds = %for.inc16, %entry
136 %and.lcssa.lcssa.lcssa10 = phi i32 [ %c.promoted9, %entry ], [ %and, %for.inc16 ]
137 %a.08 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ]
138 br label %for.cond4.preheader, !dbg !37
140 for.cond4.preheader: ; preds = %for.inc13, %for.cond1.preheader
141 %and.lcssa.lcssa7 = phi i32 [ %and.lcssa.lcssa.lcssa10, %for.cond1.preheader ], [ %and, %for.inc13 ]
142 %d.06 = phi i32 [ 0, %for.cond1.preheader ], [ %inc14, %for.inc13 ]
143 br label %for.cond7.preheader, !dbg !38
145 for.cond7.preheader: ; preds = %for.inc10, %for.cond4.preheader
146 %and.lcssa5 = phi i32 [ %and.lcssa.lcssa7, %for.cond4.preheader ], [ %and, %for.inc10 ]
147 %b.03 = phi i32 [ 0, %for.cond4.preheader ], [ %inc11, %for.inc10 ]
148 br label %for.body9, !dbg !39
150 for.body9: ; preds = %for.body9, %for.cond7.preheader
151 %and2 = phi i32 [ %and.lcssa5, %for.cond7.preheader ], [ %and, %for.body9 ], !dbg !40
152 %e.01 = phi i32 [ 0, %for.cond7.preheader ], [ %inc, %for.body9 ]
153 tail call void @llvm.dbg.value(metadata i32* @c, metadata !19, metadata !DIExpression()), !dbg !40
154 %and = and i32 %and2, 1, !dbg !32
155 %inc = add i32 %e.01, 1, !dbg !39
156 tail call void @llvm.dbg.value(metadata i32 %inc, metadata !18, metadata !DIExpression()), !dbg !42
157 %exitcond = icmp eq i32 %inc, 30, !dbg !39
158 br i1 %exitcond, label %for.inc10, label %for.body9, !dbg !39
160 for.inc10: ; preds = %for.body9
161 %inc11 = add nsw i32 %b.03, 1, !dbg !38
162 tail call void @llvm.dbg.value(metadata i32 %inc11, metadata !15, metadata !DIExpression()), !dbg !42
163 %exitcond11 = icmp eq i32 %inc11, 30, !dbg !38
164 br i1 %exitcond11, label %for.inc13, label %for.cond7.preheader, !dbg !38
166 for.inc13: ; preds = %for.inc10
167 %inc14 = add i32 %d.06, 1, !dbg !37
168 tail call void @llvm.dbg.value(metadata i32 %inc14, metadata !16, metadata !DIExpression()), !dbg !42
169 %exitcond12 = icmp eq i32 %inc14, 30, !dbg !37
170 br i1 %exitcond12, label %for.inc16, label %for.cond4.preheader, !dbg !37
172 for.inc16: ; preds = %for.inc13
173 %inc17 = add nsw i32 %a.08, 1, !dbg !31
174 tail call void @llvm.dbg.value(metadata i32 %inc17, metadata !14, metadata !DIExpression()), !dbg !31
175 %exitcond13 = icmp eq i32 %inc17, 30, !dbg !31
176 br i1 %exitcond13, label %for.end18, label %for.cond1.preheader, !dbg !31
178 for.end18: ; preds = %for.inc16
179 store i32 %and, i32* @c, align 4, !dbg !32, !tbaa !33
183 ; Function Attrs: nounwind readnone
184 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
186 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" }
187 attributes #1 = { nounwind readnone }
190 !llvm.module.flags = !{!26, !43}
192 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191700) (llvm/trunk 191710)", isOptimized: true, splitDebugFilename: "small.dwo", emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
193 !1 = !DIFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp")
195 !4 = distinct !DISubprogram(name: "bar", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, scopeLine: 19, file: !1, scope: !5, type: !6, retainedNodes: !2)
196 !5 = !DIFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp")
197 !6 = !DISubroutineType(types: !7)
199 !8 = distinct !DISubprogram(name: "foo", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !9, retainedNodes: !12)
200 !9 = !DISubroutineType(types: !10)
202 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
203 !12 = !{!13, !14, !15, !16, !18, !19}
204 !13 = !DILocalVariable(name: "p", line: 2, arg: 1, scope: !8, file: !5, type: !11)
205 !14 = !DILocalVariable(name: "a", line: 4, scope: !8, file: !5, type: !11)
206 !15 = !DILocalVariable(name: "b", line: 4, scope: !8, file: !5, type: !11)
207 !16 = !DILocalVariable(name: "d", line: 5, scope: !8, file: !5, type: !17)
208 !17 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
209 !18 = !DILocalVariable(name: "e", line: 5, scope: !8, file: !5, type: !17)
210 !19 = !DILocalVariable(name: "w", line: 12, scope: !20, file: !5, type: !25)
211 !20 = distinct !DILexicalBlock(line: 11, column: 0, file: !1, scope: !21)
212 !21 = distinct !DILexicalBlock(line: 10, column: 0, file: !1, scope: !22)
213 !22 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !23)
214 !23 = distinct !DILexicalBlock(line: 8, column: 0, file: !1, scope: !24)
215 !24 = distinct !DILexicalBlock(line: 7, column: 0, file: !1, scope: !8)
216 !25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11)
217 !26 = !{i32 2, !"Dwarf Version", i32 4}
218 !27 = !DILocation(line: 20, scope: !4)
219 !28 = !DILocation(line: 21, scope: !4)
221 !30 = !DILocation(line: 2, scope: !8)
222 !31 = !DILocation(line: 7, scope: !24)
223 !32 = !DILocation(line: 13, scope: !20)
224 !33 = !{!34, !34, i64 0}
225 !34 = !{!"int", !35, i64 0}
226 !35 = !{!"omnipotent char", !36, i64 0}
227 !36 = !{!"Simple C/C++ TBAA"}
228 !37 = !DILocation(line: 8, scope: !23)
229 !38 = !DILocation(line: 9, scope: !22)
230 !39 = !DILocation(line: 10, scope: !21)
231 !40 = !DILocation(line: 12, scope: !20)
233 !42 = !DILocation(line: 15, scope: !8)
234 !43 = !{i32 1, !"Debug Info Version", i32 3}