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1; RUN: llc -mtriple=x86_64-unknown-unknown -stop-before livedebugvalues %s -o - \
2; RUN:   | FileCheck %s
3;
4; Generated at -O1 from:
5; typedef struct {
6;   unsigned long long c;
7; } S1;
8; struct S3 {
9;   unsigned long long packed;
10; };
11; struct S6 {
12;   struct S0 *b;
13; };
14; void f(struct S3 *a3)
15; {
16;   struct S4 *s4 = (struct S4 *)(a3->packed + 0x1000UL);
17;   struct S6 *myVar = (struct S6 *)s4;
18;   struct S0 *b = myVar->b;
19;   use(b);
20; }
21;
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.
24;
25; CHECK:   ![[S4:.*]] = !DILocalVariable(name: "s4",
26; CHECK:   ![[MYVAR:.*]] = !DILocalVariable(name: "myVar",
27; CHECK:      DBG_VALUE debug-use $rax, debug-use $noreg, ![[MYVAR]],
28; CHECK-SAME:           !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
29; CHECK-NEXT: DBG_VALUE debug-use $rax, debug-use $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,
32
33source_filename = "test.c"
34target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
35target triple = "x86_64-apple-macosx10.13.0"
36
37%struct.S3 = type { i64 }
38%struct.S4 = type opaque
39%struct.S0 = type opaque
40
41; Function Attrs: noinline nounwind ssp uwtable
42define void @f(%struct.S3* nocapture readonly %a3) local_unnamed_addr #0 !dbg !6 {
43entry:
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
55  ret void, !dbg !47
56}
57
58declare i32 @use(...) local_unnamed_addr
59
60; Function Attrs: nounwind readnone speculatable
61declare void @llvm.dbg.value(metadata, metadata, metadata) #2
62
63attributes #0 = { noinline nounwind ssp uwtable }
64attributes #2 = { nounwind readnone speculatable }
65attributes #3 = { nounwind }
66
67!llvm.dbg.cu = !{!0}
68!llvm.module.flags = !{!25, !26, !27, !28}
69!llvm.ident = !{!29}
70
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: "/")
73!2 = !{}
74!3 = !{!4, !18}
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)
79!8 = !{null, !9}
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)
82!11 = !{!12}
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)
91!20 = !{!21}
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)
111