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1# RUN: llc -start-after=machineverifier -O0 %s -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s2 3# CHECK: DW_TAG_variable4# 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_variable7# CHECK-NEXT: DW_AT_location8# 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_variable12# 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")14 15 16--- |17 target triple = "aarch64--"18 define void @foo(ptr %unused_arg, ptr swiftasync %async_arg) !dbg !4 {19 %storage = alloca i6420 call void @llvm.dbg.declare(metadata ptr %async_arg, metadata !10, metadata !DIExpression(DW_OP_LLVM_entry_value, 1)), !dbg !1221 ; 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 !1224 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 !1225 ; 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 !1227 call void @llvm.dbg.declare(metadata ptr %storage, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), !dbg !1228 ret void, !dbg !1229 }30 declare void @llvm.dbg.declare(metadata, metadata, metadata)31 declare void @consume(ptr)32 !llvm.dbg.cu = !{!0}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)47...48---49name: foo50liveins:51 - { reg: '$x0', virtual-reg: '' }52 - { reg: '$x22', virtual-reg: '' }53stack:54 - { id: 0, name: '', type: spill-slot, offset: -16, size: 8, alignment: 16,55 stack-id: default, callee-saved-register: '$lr', callee-saved-restored: true }56 - { id: 1, name: '', type: default, offset: 0, size: 1, alignment: 8,57 stack-id: default, callee-saved-register: '', callee-saved-restored: true,58 debug-info-variable: '!13', debug-info-expression: '!DIExpression(DW_OP_LLVM_fragment, 0, 64)',59 debug-info-location: '!12' }60 61entry_values:62 - { entry-value-register: '$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' }70body: |71 bb.0 (%ir-block.0):72 liveins: $x0, $x22, $lr73 RET undef $lr, debug-location !1274...75