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1; RUN: opt -S %s -passes=loop-deletion | FileCheck %s2 3;; Generated from this C source:4;; static int f(int p) { return p * p * 2; }5;; static int zero() { return 0; }6;; void fun() {7;; for (int __attribute__((nodebug)) i = zero(); i < 0; ++i) {8;; f(i);9;; f(i + 1);10;; }11;; }12;;13;; Check that loop-deletion doesn't accidently mistake debug intrinsics for14;; different inlined instances of a variable as the same variable.15 16; CHECK-LABEL: for.cond.cleanup: ; preds = %entry17; CHECK-NEXT: #dbg_value({{.+}}, ![[P:[0-9]+]],{{.+}}, ![[DBG1:[0-9]+]]18; CHECK-NEXT: #dbg_value({{.+}}, ![[P]], {{.+}}, ![[DBG2:[0-9]+]]19 20; CHECK-DAG: ![[P]] = !DILocalVariable(name: "p",21; CHECK-DAG: ![[DBG1]] = !DILocation({{.+}}, inlinedAt: ![[IA1:[0-9]+]])22; CHECK-DAG: ![[DBG2]] = !DILocation({{.+}}, inlinedAt: ![[IA2:[0-9]+]])23; CHECK-DAG: ![[IA1]] = distinct !DILocation(line: 5,24; CHECK-DAG: ![[IA2]] = distinct !DILocation(line: 6,25 26define dso_local void @fun() !dbg !9 {27entry:28 br label %for.cond, !dbg !1329 30for.cond: ; preds = %for.inc, %entry31 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ], !dbg !1532 %cmp = icmp slt i32 %i.0, 0, !dbg !1633 br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !1834 35for.cond.cleanup: ; preds = %for.cond36 br label %for.end37 38for.body: ; preds = %for.cond39 call void @llvm.dbg.value(metadata i32 %i.0, metadata !19, metadata !DIExpression()), !dbg !2540 %mul.i = mul nsw i32 %i.0, %i.0, !dbg !2841 %mul1.i = mul nsw i32 %mul.i, 2, !dbg !2942 %add = add nsw i32 %i.0, 1, !dbg !3043 call void @llvm.dbg.value(metadata i32 %add, metadata !19, metadata !DIExpression()), !dbg !3144 %mul.i1 = mul nsw i32 %add, %add, !dbg !3345 %mul1.i2 = mul nsw i32 %mul.i1, 2, !dbg !3446 br label %for.inc, !dbg !3547 48for.inc: ; preds = %for.body49 %inc = add nsw i32 %i.0, 1, !dbg !3650 br label %for.cond, !dbg !37, !llvm.loop !3851 52for.end: ; preds = %for.cond.cleanup53 ret void, !dbg !4154}55 56declare void @llvm.dbg.value(metadata, metadata, metadata)57 58!llvm.dbg.cu = !{!0}59!llvm.module.flags = !{!2, !3, !4, !5, !6, !7}60!llvm.ident = !{!8}61 62!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 16.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)63!1 = !DIFile(filename: "test.c", directory: "/")64!2 = !{i32 7, !"Dwarf Version", i32 5}65!3 = !{i32 2, !"Debug Info Version", i32 3}66!4 = !{i32 1, !"wchar_size", i32 4}67!5 = !{i32 8, !"PIC Level", i32 2}68!6 = !{i32 7, !"PIE Level", i32 2}69!7 = !{i32 7, !"uwtable", i32 2}70!8 = !{!"clang version 16.0.0"}71!9 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 3, type: !10, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)72!10 = !DISubroutineType(types: !11)73!11 = !{null}74!12 = !{}75!13 = !DILocation(line: 4, column: 8, scope: !14)76!14 = distinct !DILexicalBlock(scope: !9, file: !1, line: 4, column: 3)77!15 = !DILocation(line: 4, scope: !14)78!16 = !DILocation(line: 4, column: 51, scope: !17)79!17 = distinct !DILexicalBlock(scope: !14, file: !1, line: 4, column: 3)80!18 = !DILocation(line: 4, column: 3, scope: !14)81!19 = !DILocalVariable(name: "p", arg: 1, scope: !20, file: !1, line: 1, type: !23)82!20 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !21, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !24)83!21 = !DISubroutineType(types: !22)84!22 = !{!23, !23}85!23 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)86!24 = !{!19}87!25 = !DILocation(line: 0, scope: !20, inlinedAt: !26)88!26 = distinct !DILocation(line: 5, column: 5, scope: !27)89!27 = distinct !DILexicalBlock(scope: !17, file: !1, line: 4, column: 61)90!28 = !DILocation(line: 1, column: 32, scope: !20, inlinedAt: !26)91!29 = !DILocation(line: 1, column: 36, scope: !20, inlinedAt: !26)92!30 = !DILocation(line: 6, column: 8, scope: !27)93!31 = !DILocation(line: 0, scope: !20, inlinedAt: !32)94!32 = distinct !DILocation(line: 6, column: 5, scope: !27)95!33 = !DILocation(line: 1, column: 32, scope: !20, inlinedAt: !32)96!34 = !DILocation(line: 1, column: 36, scope: !20, inlinedAt: !32)97!35 = !DILocation(line: 7, column: 3, scope: !27)98!36 = !DILocation(line: 4, column: 56, scope: !17)99!37 = !DILocation(line: 4, column: 3, scope: !17)100!38 = distinct !{!38, !18, !39, !40}101!39 = !DILocation(line: 7, column: 3, scope: !14)102!40 = !{!"llvm.loop.mustprogress"}103!41 = !DILocation(line: 8, column: 1, scope: !9)104