1 # RUN: llc -start-after=machineverifier -O0 %s -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
3 # CHECK: DW_TAG_variable
4 # CHECK-NEXT: DW_AT_location (DW_OP_GNU_entry_value(DW_OP_reg22 W22))
5 # CHECK-NEXT: DW_AT_name ("a")
6 # CHECK: DW_TAG_variable
7 # CHECK-NEXT: DW_AT_location
8 # CHECK-SAME: DW_OP_GNU_entry_value(DW_OP_reg22 W22), DW_OP_piece 0x8,
9 # CHECK-SAME: DW_OP_GNU_entry_value(DW_OP_reg22 W22), DW_OP_plus_uconst 0x2a, DW_OP_piece 0x8)
10 # CHECK-NEXT: DW_AT_name ("fragmented_var")
11 # CHECK: DW_TAG_variable
12 # CHECK-NEXT: DW_AT_location (DW_OP_piece 0x8, DW_OP_GNU_entry_value(DW_OP_reg22 W22), DW_OP_piece 0x8)
13 # CHECK-NEXT: DW_AT_name ("multi_type_fragmented_var")
17 target triple = "aarch64--"
18 define void @foo(ptr %unused_arg, ptr swiftasync %async_arg) !dbg !4 {
20 call void @llvm.dbg.declare(metadata ptr %async_arg, metadata !10, metadata !DIExpression(DW_OP_LLVM_entry_value, 1)), !dbg !12
21 ; A two fragment variable.
22 ; Fragments intentionally out of order to ensure the code can handle this.
23 call void @llvm.dbg.declare(metadata ptr %async_arg, metadata !10, metadata !DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_plus_uconst, 42, DW_OP_LLVM_fragment, 64, 64)), !dbg !12
24 call void @llvm.dbg.declare(metadata ptr %async_arg, metadata !11, metadata !DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_LLVM_fragment, 0, 64)), !dbg !12
25 ; A fragmented variable mixing entry values and stack slot locations.
26 call void @llvm.dbg.declare(metadata ptr %async_arg, metadata !13, metadata !DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_LLVM_fragment, 64, 64)), !dbg !12
27 call void @llvm.dbg.declare(metadata ptr %storage, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !12
30 declare void @llvm.dbg.declare(metadata, metadata, metadata)
31 declare void @consume(ptr)
33 !llvm.module.flags = !{!2, !3}
34 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
35 !1 = !DIFile(filename: "x.c", directory: "/")
36 !2 = !{i32 2, !"Dwarf Version", i32 4}
37 !3 = !{i32 2, !"Debug Info Version", i32 3}
38 !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !5, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0)
39 !5 = !DISubroutineType(types: !6)
40 !6 = !{null, !7, !7, !7}
41 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 128)
42 !9 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
43 !10 = !DILocalVariable(name: "a", scope: !4, file: !1, line: 1, type: !7)
44 !11 = !DILocalVariable(name: "fragmented_var", scope: !4, file: !1, line: 1, type: !7)
45 !12 = !DILocation(line: 1, column: 37, scope: !4)
46 !13 = !DILocalVariable(name: "multi_type_fragmented_var", scope: !4, file: !1, line: 1, type: !7)
51 - { reg: '$x0', virtual-reg: '' }
52 - { reg: '$x22', virtual-reg: '' }
54 - { id: 0, name: '', type: spill-slot, offset: -16, size: 8, alignment: 16,
55 stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true }
56 - { id: 1, name: '', type: default, offset: 0, size: 1, alignment: 8,
57 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
58 debug-info-variable: '!13', debug-info-expression: '!DIExpression(DW_OP_LLVM_fragment, 0, 64)',
59 debug-info-location: '!12' }
62 - { entry-value-register: '$x22', debug-info-variable: '!10', debug-info-expression: '!DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_deref)',
63 debug-info-location: '!12' }
64 - { entry-value-register: '$x22', debug-info-variable: '!11', debug-info-expression: '!DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_plus_uconst, 42, DW_OP_deref, DW_OP_LLVM_fragment, 64, 64)',
65 debug-info-location: '!12' }
66 - { entry-value-register: '$x22', debug-info-variable: '!11', debug-info-expression: '!DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_deref, DW_OP_LLVM_fragment, 0, 64)',
67 debug-info-location: '!12' }
68 - { entry-value-register: '$x22', debug-info-variable: '!13', debug-info-expression: '!DIExpression(DW_OP_LLVM_entry_value, 1, DW_OP_deref, DW_OP_LLVM_fragment, 64, 64)',
69 debug-info-location: '!12' }
72 liveins: $x0, $x22, $lr
73 RET undef $lr, debug-location !12