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1; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \2; RUN: -experimental-debug-variable-locations=false \3; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE4; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \5; RUN: -experimental-debug-variable-locations=true \6; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF7 8; This test case was generated from the following phi-split.c program,9; using: clang phi-split.c -g -O1 -S -o - --target=i386 -emit-llvm10; --------------------------------------11; long long end = 10;12;13; int main() {14; long long x = 9;15; long long y = 13;16; for (long long u = 0; u < end; ++u) {17; x += y;18; y = y * 3;19; }20;21; volatile long long arr[80];22; for (long long q = 0; q < 64; ++q) {23; arr[q] = q + 3;24; }25;26; return x;27; }28; --------------------------------------29;30 31; ModuleID = 'phi-split.c'32source_filename = "phi-split.c"33target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"34target triple = "i386"35 36@end = dso_local local_unnamed_addr global i64 10, align 8, !dbg !037 38; Function Attrs: nounwind39define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 {40; CHECK-LABEL: name: main41entry:42 %arr = alloca [80 x i64], align 843 call void @llvm.dbg.value(metadata i64 9, metadata !17, metadata !DIExpression()), !dbg !2844 call void @llvm.dbg.value(metadata i64 13, metadata !18, metadata !DIExpression()), !dbg !2945 call void @llvm.dbg.value(metadata i64 0, metadata !19, metadata !DIExpression()), !dbg !3046 %0 = load i64, ptr @end, align 8, !dbg !3147 %cmp20 = icmp sgt i64 %0, 0, !dbg !3748 br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !3849 50for.body.lr.ph: ; preds = %entry51 %1 = load i64, ptr @end, align 852 br label %for.body, !dbg !3853 54for.cond.cleanup.loopexit: ; preds = %for.body55 %extract.t = trunc i64 %add to i32, !dbg !3856 br label %for.cond.cleanup, !dbg !3957 58for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry59 %x.0.lcssa.off0 = phi i32 [ 9, %entry ], [ %extract.t, %for.cond.cleanup.loopexit ]60 call void @llvm.dbg.value(metadata i64 undef, metadata !17, metadata !DIExpression()), !dbg !2861 call void @llvm.dbg.value(metadata i64 0, metadata !26, metadata !DIExpression()), !dbg !4162 br label %for.body4, !dbg !4263 64for.body: ; preds = %for.body.lr.ph, %for.body65; CHECK-LABEL: bb.{{.*}}.for.body:66; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI67; INSTRREF-SAME: debug-instr-number 568; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI69; INSTRREF-SAME: debug-instr-number 670; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI71; INSTRREF-SAME: debug-instr-number 772; CHECK-NEXT: [[REG5:%[0-9]+]]:gr32_nosp = PHI73; INSTRREF-SAME: debug-instr-number 874; CHECK-NEXT: [[REG6:%[0-9]+]]:gr32 = PHI75; INSTRREF-SAME: debug-instr-number 976; CHECK-NEXT: [[REG7:%[0-9]+]]:gr32 = PHI77; INSTRREF-SAME: debug-instr-number 1078; INSTRREF-NEXT: DBG_INSTR_REF !19, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(5, 0)79; INSTRREF-NEXT: DBG_INSTR_REF !19, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(6, 0)80; INSTRREF-NEXT: DBG_INSTR_REF !18, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(7, 0)81; INSTRREF-NEXT: DBG_INSTR_REF !18, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(8, 0)82; INSTRREF-NEXT: DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(9, 0)83; INSTRREF-NEXT: DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(10, 0)84; DBGVALUE-NEXT: DBG_VALUE [[REG2]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32)85; DBGVALUE-NEXT: DBG_VALUE [[REG3]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32)86; DBGVALUE-NEXT: DBG_VALUE [[REG4]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32)87; DBGVALUE-NEXT: DBG_VALUE [[REG5]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32)88; DBGVALUE-NEXT: DBG_VALUE [[REG6]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32)89; DBGVALUE-NEXT: DBG_VALUE [[REG7]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32)90 %u.023 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]91 %y.022 = phi i64 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]92 %x.021 = phi i64 [ 9, %for.body.lr.ph ], [ %add, %for.body ]93 call void @llvm.dbg.value(metadata i64 %u.023, metadata !19, metadata !DIExpression()), !dbg !3094 call void @llvm.dbg.value(metadata i64 %y.022, metadata !18, metadata !DIExpression()), !dbg !2995 call void @llvm.dbg.value(metadata i64 %x.021, metadata !17, metadata !DIExpression()), !dbg !2896 %add = add nuw nsw i64 %y.022, %x.021, !dbg !4397 %mul = mul nsw i64 %y.022, 3, !dbg !4598 %inc = add nuw nsw i64 %u.023, 1, !dbg !4699 call void @llvm.dbg.value(metadata i64 %inc, metadata !19, metadata !DIExpression()), !dbg !30100 call void @llvm.dbg.value(metadata i64 %mul, metadata !18, metadata !DIExpression()), !dbg !29101 call void @llvm.dbg.value(metadata i64 %add, metadata !17, metadata !DIExpression()), !dbg !28102 %cmp = icmp slt i64 %inc, %1, !dbg !37103 br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !38, !llvm.loop !47104 105for.cond.cleanup3: ; preds = %for.body4106 ret i32 %x.0.lcssa.off0, !dbg !50107 108for.body4: ; preds = %for.cond.cleanup, %for.body4109 %q.019 = phi i64 [ 0, %for.cond.cleanup ], [ %inc7, %for.body4 ]110 call void @llvm.dbg.value(metadata i64 %q.019, metadata !26, metadata !DIExpression()), !dbg !41111 %add5 = add nuw nsw i64 %q.019, 3, !dbg !51112 %idxprom = trunc i64 %q.019 to i32, !dbg !54113 %arrayidx = getelementptr inbounds [80 x i64], ptr %arr, i32 0, i32 %idxprom, !dbg !54114 store volatile i64 %add5, ptr %arrayidx, align 8, !dbg !55115 %inc7 = add nuw nsw i64 %q.019, 1, !dbg !56116 call void @llvm.dbg.value(metadata i64 %inc7, metadata !26, metadata !DIExpression()), !dbg !41117 %cmp2 = icmp ult i64 %inc7, 64, !dbg !57118 br i1 %cmp2, label %for.body4, label %for.cond.cleanup3, !dbg !42, !llvm.loop !58119}120 121; Function Attrs: nounwind readnone speculatable122declare void @llvm.dbg.value(metadata, metadata, metadata) #1123 124attributes #0 = { nounwind }125attributes #1 = { nounwind readnone speculatable }126 127!llvm.dbg.cu = !{!2}128!llvm.module.flags = !{!7, !8, !9, !10}129!llvm.ident = !{!11}130 131!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())132!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)133!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)134!3 = !DIFile(filename: "phi-split.c", directory: "")135!4 = !{}136!5 = !{!0}137!6 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)138!7 = !{i32 1, !"NumRegisterParameters", i32 0}139!8 = !{i32 2, !"Dwarf Version", i32 4}140!9 = !{i32 2, !"Debug Info Version", i32 3}141!10 = !{i32 1, !"wchar_size", i32 4}142!11 = !{!"clang version 7.0.0 (x)"}143!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !13, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !16)144!13 = !DISubroutineType(types: !14)145!14 = !{!15}146!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)147!16 = !{!17, !18, !19, !21, !26}148!17 = !DILocalVariable(name: "x", scope: !12, file: !3, line: 4, type: !6)149!18 = !DILocalVariable(name: "y", scope: !12, file: !3, line: 5, type: !6)150!19 = !DILocalVariable(name: "u", scope: !20, file: !3, line: 6, type: !6)151!20 = distinct !DILexicalBlock(scope: !12, file: !3, line: 6, column: 3)152!21 = !DILocalVariable(name: "arr", scope: !12, file: !3, line: 11, type: !22)153!22 = !DICompositeType(tag: DW_TAG_array_type, baseType: !23, size: 5120, elements: !24)154!23 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)155!24 = !{!25}156!25 = !DISubrange(count: 80)157!26 = !DILocalVariable(name: "q", scope: !27, file: !3, line: 12, type: !6)158!27 = distinct !DILexicalBlock(scope: !12, file: !3, line: 12, column: 3)159!28 = !DILocation(line: 4, column: 13, scope: !12)160!29 = !DILocation(line: 5, column: 13, scope: !12)161!30 = !DILocation(line: 6, column: 18, scope: !20)162!31 = !DILocation(line: 6, column: 29, scope: !32)163!32 = distinct !DILexicalBlock(scope: !20, file: !3, line: 6, column: 3)164!37 = !DILocation(line: 6, column: 27, scope: !32)165!38 = !DILocation(line: 6, column: 3, scope: !20)166!39 = !DILocation(line: 11, column: 3, scope: !12)167!40 = !DILocation(line: 11, column: 22, scope: !12)168!41 = !DILocation(line: 12, column: 18, scope: !27)169!42 = !DILocation(line: 12, column: 3, scope: !27)170!43 = !DILocation(line: 7, column: 7, scope: !44)171!44 = distinct !DILexicalBlock(scope: !32, file: !3, line: 6, column: 39)172!45 = !DILocation(line: 8, column: 11, scope: !44)173!46 = !DILocation(line: 6, column: 34, scope: !32)174!47 = distinct !{!47, !38, !48}175!48 = !DILocation(line: 9, column: 3, scope: !20)176!50 = !DILocation(line: 16, column: 3, scope: !12)177!51 = !DILocation(line: 13, column: 16, scope: !52)178!52 = distinct !DILexicalBlock(scope: !53, file: !3, line: 12, column: 38)179!53 = distinct !DILexicalBlock(scope: !27, file: !3, line: 12, column: 3)180!54 = !DILocation(line: 13, column: 5, scope: !52)181!55 = !DILocation(line: 13, column: 12, scope: !52)182!56 = !DILocation(line: 12, column: 33, scope: !53)183!57 = !DILocation(line: 12, column: 27, scope: !53)184!58 = distinct !{!58, !42, !59}185!59 = !DILocation(line: 14, column: 3, scope: !27)186