1 ; RUN: llc -mtriple=x86_64-unknown-unknown -stop-before livedebugvalues %s -o - \
4 ; Generated at -O1 from:
6 ; unsigned long long c;
9 ; unsigned long long packed;
14 ; void f(struct S3 *a3)
16 ; struct S4 *s4 = (struct S4 *)(a3->packed + 0x1000UL);
17 ; struct S6 *myVar = (struct S6 *)s4;
18 ; struct S0 *b = myVar->b;
22 ; The debug info is attached to the ADD 4096 operation, which doesn't survive
23 ; instruction selection as it is folded into the load.
25 ; CHECK: ![[S4:.*]] = !DILocalVariable(name: "s4",
26 ; CHECK: ![[MYVAR:.*]] = !DILocalVariable(name: "myVar",
27 ; CHECK: DBG_VALUE $rax, $noreg, ![[MYVAR]],
28 ; CHECK-SAME: !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
29 ; CHECK-NEXT: DBG_VALUE $rax, $noreg, ![[S4]],
30 ; CHECK-SAME: !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
31 ; CHECK-NEXT: $rdi = MOV64rm killed renamable $rax, 1, $noreg, 4096, $noreg,
33 source_filename = "test.c"
34 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
35 target triple = "x86_64-apple-macosx10.13.0"
37 %struct.S3 = type { i64 }
38 %struct.S4 = type opaque
39 %struct.S0 = type opaque
41 ; Function Attrs: noinline nounwind ssp uwtable
42 define void @f(%struct.S3* nocapture readonly %a3) local_unnamed_addr #0 !dbg !6 {
44 tail call void @llvm.dbg.value(metadata %struct.S3* %a3, metadata !15, metadata !DIExpression()), !dbg !30
45 %packed = getelementptr inbounds %struct.S3, %struct.S3* %a3, i64 0, i32 0, !dbg !31
46 %0 = load i64, i64* %packed, align 8, !dbg !31
47 %add = add i64 %0, 4096, !dbg !37
48 %1 = inttoptr i64 %add to %struct.S4*, !dbg !38
49 tail call void @llvm.dbg.value(metadata %struct.S4* %1, metadata !16, metadata !DIExpression()), !dbg !39
50 tail call void @llvm.dbg.value(metadata %struct.S4* %1, metadata !17, metadata !DIExpression()), !dbg !40
51 %b1 = bitcast %struct.S4* %1 to %struct.S0**, !dbg !41
52 %2 = load %struct.S0*, %struct.S0** %b1, align 8, !dbg !41
53 tail call void @llvm.dbg.value(metadata %struct.S0* %2, metadata !24, metadata !DIExpression()), !dbg !45
54 %call = tail call i32 (%struct.S0*, ...) bitcast (i32 (...)* @use to i32 (%struct.S0*, ...)*)(%struct.S0* %2) #3, !dbg !46
58 declare i32 @use(...) local_unnamed_addr
60 ; Function Attrs: nounwind readnone speculatable
61 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
63 attributes #0 = { noinline nounwind ssp uwtable }
64 attributes #2 = { nounwind readnone speculatable }
65 attributes #3 = { nounwind }
68 !llvm.module.flags = !{!25, !26, !27, !28}
71 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk 316467) (llvm/trunk 316466)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
72 !1 = !DIFile(filename: "test.c", directory: "/")
75 !4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
76 !5 = !DICompositeType(tag: DW_TAG_structure_type, name: "S4", scope: !6, file: !1, line: 20, flags: DIFlagFwdDecl)
77 !6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 18, type: !7, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !14)
78 !7 = !DISubroutineType(types: !8)
80 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
81 !10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S3", file: !1, line: 5, size: 64, elements: !11)
83 !12 = !DIDerivedType(tag: DW_TAG_member, name: "packed", scope: !10, file: !1, line: 6, baseType: !13, size: 64)
84 !13 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
85 !14 = !{!15, !16, !17, !24}
86 !15 = !DILocalVariable(name: "a3", arg: 1, scope: !6, file: !1, line: 18, type: !9)
87 !16 = !DILocalVariable(name: "s4", scope: !6, file: !1, line: 20, type: !4)
88 !17 = !DILocalVariable(name: "myVar", scope: !6, file: !1, line: 21, type: !18)
89 !18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
90 !19 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S6", file: !1, line: 8, size: 64, elements: !20)
92 !21 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !19, file: !1, line: 9, baseType: !22, size: 64)
93 !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)
94 !23 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !1, line: 4, flags: DIFlagFwdDecl)
95 !24 = !DILocalVariable(name: "b", scope: !6, file: !1, line: 22, type: !22)
96 !25 = !{i32 2, !"Dwarf Version", i32 4}
97 !26 = !{i32 2, !"Debug Info Version", i32 3}
98 !27 = !{i32 1, !"wchar_size", i32 4}
99 !28 = !{i32 7, !"PIC Level", i32 2}
100 !29 = !{!"clang version 6.0.0 (trunk 316467) (llvm/trunk 316466)"}
101 !30 = !DILocation(line: 18, column: 14, scope: !6)
102 !31 = !DILocation(line: 20, column: 37, scope: !6)
103 !37 = !DILocation(line: 20, column: 44, scope: !6)
104 !38 = !DILocation(line: 20, column: 19, scope: !6)
105 !39 = !DILocation(line: 20, column: 14, scope: !6)
106 !40 = !DILocation(line: 21, column: 14, scope: !6)
107 !41 = !DILocation(line: 22, column: 25, scope: !6)
108 !45 = !DILocation(line: 22, column: 14, scope: !6)
109 !46 = !DILocation(line: 23, column: 3, scope: !6)
110 !47 = !DILocation(line: 24, column: 1, scope: !6)