1; RUN: llc %s -o %t.s
2; RUN: llvm-mc -triple x86_64--linux %t.s -filetype=obj -o %t.o
3; RUN: FileCheck < %t.s %s
4; RUN: llvm-dwarfdump %t.o | FileCheck %s --check-prefix=DWARF
5
6; Unlike dbg.declare, dbg.addr should be lowered to DBG_VALUE instructions. It
7; is control-dependent.
8
9; CHECK-LABEL: use_dbg_addr:
10; CHECK: #DEBUG_VALUE: use_dbg_addr:o <- [$rsp+0]
11
12; DWARF: DW_TAG_variable
13; DWARF-NEXT:              DW_AT_location (DW_OP_fbreg +0)
14; DWARF-NEXT:              DW_AT_name ("o")
15
16
17; ModuleID = 't.c'
18source_filename = "t.c"
19target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
20target triple = "x86_64--linux"
21
22%struct.Foo = type { i32 }
23
24; Function Attrs: noinline nounwind uwtable
25define void @use_dbg_addr() #0 !dbg !7 {
26entry:
27  %o = alloca %struct.Foo, align 4
28  call void @llvm.dbg.addr(metadata %struct.Foo* %o, metadata !10, metadata !15), !dbg !16
29  call void @escape_foo(%struct.Foo* %o), !dbg !17
30  ret void, !dbg !18
31}
32
33; Function Attrs: nounwind readnone speculatable
34declare void @llvm.dbg.addr(metadata, metadata, metadata) #1
35
36declare void @escape_foo(%struct.Foo*)
37
38attributes #0 = { noinline nounwind uwtable }
39attributes #1 = { nounwind readnone speculatable }
40
41!llvm.dbg.cu = !{!0}
42!llvm.module.flags = !{!3, !4, !5}
43!llvm.ident = !{!6}
44
45!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
46!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild")
47!2 = !{}
48!3 = !{i32 2, !"Dwarf Version", i32 4}
49!4 = !{i32 2, !"Debug Info Version", i32 3}
50!5 = !{i32 1, !"wchar_size", i32 4}
51!6 = !{!"clang version 6.0.0 "}
52!7 = distinct !DISubprogram(name: "use_dbg_addr", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
53!8 = !DISubroutineType(types: !9)
54!9 = !{null}
55!10 = !DILocalVariable(name: "o", scope: !7, file: !1, line: 4, type: !11)
56!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Foo", file: !1, line: 1, size: 32, elements: !12)
57!12 = !{!13}
58!13 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !11, file: !1, line: 1, baseType: !14, size: 32)
59!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
60!15 = !DIExpression()
61!16 = !DILocation(line: 4, column: 14, scope: !7)
62!17 = !DILocation(line: 5, column: 3, scope: !7)
63!18 = !DILocation(line: 6, column: 1, scope: !7)
64