1 ; RUN: llc %s -stop-after=finalize-isel -o - \
2 ; RUN: | FileCheck %s --implicit-check-not=DBG_
5 ; RUN: llc --try-experimental-debuginfo-iterators %s -stop-after=finalize-isel -o - \
6 ; RUN: | FileCheck %s --implicit-check-not=DBG_
13 ;; int f(int a, int b, int c) {
24 ;; The variable of interest is `a`, which has a store that is hoisted out of the
25 ;; loop into the entry BB. Check the memory location is not used after the
26 ;; hoisted store until the assignment position within the loop.
28 ; CHECK-DAG: ![[A:[0-9]+]] = !DILocalVariable(name: "a",
31 ; CHECK: DBG_VALUE $edi, $noreg, ![[A]], !DIExpression()
33 ; CHECK: bb.1.do.body:
34 ; CHECK: DBG_VALUE %stack.0.a.addr, $noreg, ![[A]], !DIExpression(DW_OP_deref)
36 target triple = "x86_64-unknown-linux-gnu"
38 @g = dso_local local_unnamed_addr global ptr null, align 8, !dbg !0
40 define dso_local noundef i32 @_Z1fiii(i32 noundef %a, i32 noundef %b, i32 noundef %c) local_unnamed_addr #0 !dbg !12 {
42 %a.addr = alloca i32, align 4, !DIAssignID !19
43 call void @llvm.dbg.assign(metadata i1 undef, metadata !16, metadata !DIExpression(), metadata !19, metadata ptr %a.addr, metadata !DIExpression()), !dbg !20
44 call void @llvm.dbg.assign(metadata i32 %a, metadata !16, metadata !DIExpression(), metadata !21, metadata ptr %a.addr, metadata !DIExpression()), !dbg !20
45 store i32 %b, ptr %a.addr, align 4, !DIAssignID !28
46 br label %do.body, !dbg !29
48 do.body: ; preds = %do.body, %entry
49 %c.addr.0 = phi i32 [ %c, %entry ], [ %mul, %do.body ]
50 %mul = mul nsw i32 %c.addr.0, %c.addr.0, !dbg !30
51 call void @llvm.dbg.assign(metadata i32 %b, metadata !16, metadata !DIExpression(), metadata !28, metadata ptr %a.addr, metadata !DIExpression()), !dbg !20
52 tail call void @_Z1ev(), !dbg !33
53 %call = tail call noundef i32 @_Z1dv(), !dbg !34
54 %tobool.not = icmp eq i32 %call, 0, !dbg !34
55 br i1 %tobool.not, label %do.end, label %do.body, !dbg !35, !llvm.loop !36
57 do.end: ; preds = %do.body
58 call void @_Z2esPi(ptr noundef nonnull %a.addr), !dbg !39
59 %0 = load i32, ptr %a.addr, align 4, !dbg !40
60 %add = add nsw i32 %0, %mul, !dbg !41
61 ret i32 %add, !dbg !42
64 declare !dbg !43 dso_local void @_Z1ev() local_unnamed_addr #1
65 declare !dbg !47 dso_local noundef i32 @_Z1dv() local_unnamed_addr #1
66 declare !dbg !50 dso_local void @_Z2esPi(ptr noundef) local_unnamed_addr #1
67 declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #2
68 declare void @llvm.dbg.value(metadata, metadata, metadata) #3
71 !llvm.module.flags = !{!7, !8, !9, !10, !1000}
74 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
75 !1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 4, type: !5, isLocal: false, isDefinition: true)
76 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
77 !3 = !DIFile(filename: "test.cpp", directory: "/")
79 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64)
80 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
81 !7 = !{i32 7, !"Dwarf Version", i32 5}
82 !8 = !{i32 2, !"Debug Info Version", i32 3}
83 !9 = !{i32 1, !"wchar_size", i32 4}
84 !10 = !{i32 7, !"uwtable", i32 1}
85 !11 = !{!"clang version 14.0.0"}
86 !12 = distinct !DISubprogram(name: "f", linkageName: "_Z1fiii", scope: !3, file: !3, line: 5, type: !13, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !15)
87 !13 = !DISubroutineType(types: !14)
88 !14 = !{!6, !6, !6, !6}
89 !15 = !{!16, !17, !18}
90 !16 = !DILocalVariable(name: "a", arg: 1, scope: !12, file: !3, line: 5, type: !6)
91 !17 = !DILocalVariable(name: "b", arg: 2, scope: !12, file: !3, line: 5, type: !6)
92 !18 = !DILocalVariable(name: "c", arg: 3, scope: !12, file: !3, line: 5, type: !6)
93 !19 = distinct !DIAssignID()
94 !20 = !DILocation(line: 0, scope: !12)
95 !21 = distinct !DIAssignID()
96 !22 = distinct !DIAssignID()
97 !23 = distinct !DIAssignID()
98 !28 = distinct !DIAssignID()
99 !29 = !DILocation(line: 6, column: 3, scope: !12)
100 !30 = !DILocation(line: 8, column: 7, scope: !31)
101 !31 = distinct !DILexicalBlock(scope: !12, file: !3, line: 6, column: 6)
102 !32 = distinct !DIAssignID()
103 !33 = !DILocation(line: 10, column: 5, scope: !31)
104 !34 = !DILocation(line: 11, column: 12, scope: !12)
105 !35 = !DILocation(line: 11, column: 3, scope: !31)
106 !36 = distinct !{!36, !29, !37, !38}
107 !37 = !DILocation(line: 11, column: 15, scope: !12)
108 !38 = !{!"llvm.loop.mustprogress"}
109 !39 = !DILocation(line: 12, column: 3, scope: !12)
110 !40 = !DILocation(line: 13, column: 10, scope: !12)
111 !41 = !DILocation(line: 13, column: 12, scope: !12)
112 !42 = !DILocation(line: 13, column: 3, scope: !12)
113 !43 = !DISubprogram(name: "e", linkageName: "_Z1ev", scope: !3, file: !3, line: 2, type: !44, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !46)
114 !44 = !DISubroutineType(types: !45)
117 !47 = !DISubprogram(name: "d", linkageName: "_Z1dv", scope: !3, file: !3, line: 1, type: !48, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !46)
118 !48 = !DISubroutineType(types: !49)
120 !50 = !DISubprogram(name: "es", linkageName: "_Z2esPi", scope: !3, file: !3, line: 3, type: !51, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !46)
121 !51 = !DISubroutineType(types: !52)
123 !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}