1 ; Round trip test for DW_OP_LLVM_implicit_pointer metadata
3 ; RUN: llvm-as < %s | llvm-dis | FileCheck %s
5 ;---------------------------
6 ;static const char *b = "opq";
18 ; return *ptr1 - 5 + **ptr2;
20 ;---------------------------
22 ; ModuleID = 'LLVM_implicit_pointer.c'
23 source_filename = "LLVM_implicit_pointer.c"
24 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
25 target triple = "x86_64-unknown-linux-gnu"
27 @v = dso_local global i32 0, align 4, !dbg !0
29 ; Function Attrs: nofree norecurse nounwind uwtable
30 define dso_local i32 @main() local_unnamed_addr !dbg !12 {
32 ; CHECK: call void @llvm.dbg.value(metadata i32 4, metadata [[VAR:![0-9]+]], metadata !DIExpression())
33 call void @llvm.dbg.value(metadata i32 4, metadata !16, metadata !DIExpression()), !dbg !21
34 %0 = load volatile i32, i32* @v, align 4, !dbg !22, !tbaa !23
35 %inc = add nsw i32 %0, 1, !dbg !22
36 store volatile i32 %inc, i32* @v, align 4, !dbg !22, !tbaa !23
38 ; CHECK: call void @llvm.dbg.value(metadata i32 4, metadata [[PTR1:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_implicit_pointer))
39 call void @llvm.dbg.value(metadata i32 4, metadata !17, metadata !DIExpression(DW_OP_LLVM_implicit_pointer)), !dbg !21
41 ; CHECK: call void @llvm.dbg.value(metadata i32 4, metadata [[PTR2:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_implicit_pointer, DW_OP_LLVM_implicit_pointer))
42 call void @llvm.dbg.value(metadata i32 4, metadata !19, metadata !DIExpression(DW_OP_LLVM_implicit_pointer, DW_OP_LLVM_implicit_pointer)), !dbg !21
43 %1 = load volatile i32, i32* @v, align 4, !dbg !27, !tbaa !23
44 %inc1 = add nsw i32 %1, 1, !dbg !27
45 store volatile i32 %inc1, i32* @v, align 4, !dbg !27, !tbaa !23
49 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
50 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
53 !llvm.module.flags = !{!8, !9, !10}
56 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
57 !1 = distinct !DIGlobalVariable(name: "v", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
58 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)
59 !3 = !DIFile(filename: "LLVM_implicit_pointer.c", directory: "/dir", checksumkind: CSK_MD5, checksum: "218aaa8dc9f04b056b56d944d06383dd")
62 !6 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
63 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
64 !8 = !{i32 7, !"Dwarf Version", i32 5}
65 !9 = !{i32 2, !"Debug Info Version", i32 3}
66 !10 = !{i32 1, !"wchar_size", i32 4}
67 !11 = !{!"clang version 12.0.0"}
68 !12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !13, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
69 !13 = !DISubroutineType(types: !14)
71 !15 = !{!16, !17, !19}
72 ; CHECK: [[VAR]] = !DILocalVariable(name: "var"
73 !16 = !DILocalVariable(name: "var", scope: !12, file: !3, line: 4, type: !7)
74 ; CHECK: [[PTR1]] = !DILocalVariable(name: "ptr1"
75 !17 = !DILocalVariable(name: "ptr1", scope: !12, file: !3, line: 5, type: !18)
76 !18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
77 ; CHECK: [[PTR2]] = !DILocalVariable(name: "ptr2"
78 !19 = !DILocalVariable(name: "ptr2", scope: !12, file: !3, line: 6, type: !20)
79 !20 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !18, size: 64)
80 !21 = !DILocation(line: 0, scope: !12)
81 !22 = !DILocation(line: 8, column: 4, scope: !12)
82 !23 = !{!24, !24, i64 0}
83 !24 = !{!"int", !25, i64 0}
84 !25 = !{!"omnipotent char", !26, i64 0}
85 !26 = !{!"Simple C/C++ TBAA"}
86 !27 = !DILocation(line: 11, column: 4, scope: !12)
87 !28 = !DILocation(line: 13, column: 3, scope: !12)