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,DBGVALUE 4; 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,INSTRREF 7 8; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \ 9; RUN: -experimental-debug-variable-locations=false --try-experimental-debuginfo-iterators \ 10; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE 11 12; This test case was generated from the following phi-split.c program, 13; using: clang phi-split.c -g -O1 -S -o - --target=i386 -emit-llvm 14; -------------------------------------- 15; long long end = 10; 16; 17; int main() { 18; long long x = 9; 19; long long y = 13; 20; for (long long u = 0; u < end; ++u) { 21; x += y; 22; y = y * 3; 23; } 24; 25; volatile long long arr[80]; 26; for (long long q = 0; q < 64; ++q) { 27; arr[q] = q + 3; 28; } 29; 30; return x; 31; } 32; -------------------------------------- 33; 34 35; ModuleID = 'phi-split.c' 36source_filename = "phi-split.c" 37target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128" 38target triple = "i386" 39 40@end = dso_local local_unnamed_addr global i64 10, align 8, !dbg !0 41 42; Function Attrs: nounwind 43define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 { 44; CHECK-LABEL: name: main 45entry: 46 %arr = alloca [80 x i64], align 8 47 call void @llvm.dbg.value(metadata i64 9, metadata !17, metadata !DIExpression()), !dbg !28 48 call void @llvm.dbg.value(metadata i64 13, metadata !18, metadata !DIExpression()), !dbg !29 49 call void @llvm.dbg.value(metadata i64 0, metadata !19, metadata !DIExpression()), !dbg !30 50 %0 = load i64, ptr @end, align 8, !dbg !31 51 %cmp20 = icmp sgt i64 %0, 0, !dbg !37 52 br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !38 53 54for.body.lr.ph: ; preds = %entry 55 %1 = load i64, ptr @end, align 8 56 br label %for.body, !dbg !38 57 58for.cond.cleanup.loopexit: ; preds = %for.body 59 %extract.t = trunc i64 %add to i32, !dbg !38 60 br label %for.cond.cleanup, !dbg !39 61 62for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry 63 %x.0.lcssa.off0 = phi i32 [ 9, %entry ], [ %extract.t, %for.cond.cleanup.loopexit ] 64 call void @llvm.dbg.value(metadata i64 undef, metadata !17, metadata !DIExpression()), !dbg !28 65 call void @llvm.dbg.value(metadata i64 0, metadata !26, metadata !DIExpression()), !dbg !41 66 br label %for.body4, !dbg !42 67 68for.body: ; preds = %for.body.lr.ph, %for.body 69; CHECK-LABEL: bb.{{.*}}.for.body: 70; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI 71; INSTRREF-SAME: debug-instr-number 5 72; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI 73; INSTRREF-SAME: debug-instr-number 6 74; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI 75; INSTRREF-SAME: debug-instr-number 7 76; CHECK-NEXT: [[REG5:%[0-9]+]]:gr32_nosp = PHI 77; INSTRREF-SAME: debug-instr-number 8 78; CHECK-NEXT: [[REG6:%[0-9]+]]:gr32 = PHI 79; INSTRREF-SAME: debug-instr-number 9 80; CHECK-NEXT: [[REG7:%[0-9]+]]:gr32 = PHI 81; INSTRREF-SAME: debug-instr-number 10 82; INSTRREF-NEXT: DBG_INSTR_REF !19, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(5, 0) 83; INSTRREF-NEXT: DBG_INSTR_REF !19, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(6, 0) 84; INSTRREF-NEXT: DBG_INSTR_REF !18, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(7, 0) 85; INSTRREF-NEXT: DBG_INSTR_REF !18, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(8, 0) 86; INSTRREF-NEXT: DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 0, 32), dbg-instr-ref(9, 0) 87; INSTRREF-NEXT: DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 32, 32), dbg-instr-ref(10, 0) 88; DBGVALUE-NEXT: DBG_VALUE [[REG2]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32) 89; DBGVALUE-NEXT: DBG_VALUE [[REG3]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32) 90; DBGVALUE-NEXT: DBG_VALUE [[REG4]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32) 91; DBGVALUE-NEXT: DBG_VALUE [[REG5]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32) 92; DBGVALUE-NEXT: DBG_VALUE [[REG6]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32) 93; DBGVALUE-NEXT: DBG_VALUE [[REG7]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32) 94 %u.023 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] 95 %y.022 = phi i64 [ 13, %for.body.lr.ph ], [ %mul, %for.body ] 96 %x.021 = phi i64 [ 9, %for.body.lr.ph ], [ %add, %for.body ] 97 call void @llvm.dbg.value(metadata i64 %u.023, metadata !19, metadata !DIExpression()), !dbg !30 98 call void @llvm.dbg.value(metadata i64 %y.022, metadata !18, metadata !DIExpression()), !dbg !29 99 call void @llvm.dbg.value(metadata i64 %x.021, metadata !17, metadata !DIExpression()), !dbg !28 100 %add = add nuw nsw i64 %y.022, %x.021, !dbg !43 101 %mul = mul nsw i64 %y.022, 3, !dbg !45 102 %inc = add nuw nsw i64 %u.023, 1, !dbg !46 103 call void @llvm.dbg.value(metadata i64 %inc, metadata !19, metadata !DIExpression()), !dbg !30 104 call void @llvm.dbg.value(metadata i64 %mul, metadata !18, metadata !DIExpression()), !dbg !29 105 call void @llvm.dbg.value(metadata i64 %add, metadata !17, metadata !DIExpression()), !dbg !28 106 %cmp = icmp slt i64 %inc, %1, !dbg !37 107 br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !38, !llvm.loop !47 108 109for.cond.cleanup3: ; preds = %for.body4 110 ret i32 %x.0.lcssa.off0, !dbg !50 111 112for.body4: ; preds = %for.cond.cleanup, %for.body4 113 %q.019 = phi i64 [ 0, %for.cond.cleanup ], [ %inc7, %for.body4 ] 114 call void @llvm.dbg.value(metadata i64 %q.019, metadata !26, metadata !DIExpression()), !dbg !41 115 %add5 = add nuw nsw i64 %q.019, 3, !dbg !51 116 %idxprom = trunc i64 %q.019 to i32, !dbg !54 117 %arrayidx = getelementptr inbounds [80 x i64], ptr %arr, i32 0, i32 %idxprom, !dbg !54 118 store volatile i64 %add5, ptr %arrayidx, align 8, !dbg !55 119 %inc7 = add nuw nsw i64 %q.019, 1, !dbg !56 120 call void @llvm.dbg.value(metadata i64 %inc7, metadata !26, metadata !DIExpression()), !dbg !41 121 %cmp2 = icmp ult i64 %inc7, 64, !dbg !57 122 br i1 %cmp2, label %for.body4, label %for.cond.cleanup3, !dbg !42, !llvm.loop !58 123} 124 125; Function Attrs: nounwind readnone speculatable 126declare void @llvm.dbg.value(metadata, metadata, metadata) #1 127 128attributes #0 = { nounwind } 129attributes #1 = { nounwind readnone speculatable } 130 131!llvm.dbg.cu = !{!2} 132!llvm.module.flags = !{!7, !8, !9, !10} 133!llvm.ident = !{!11} 134 135!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 136!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) 137!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) 138!3 = !DIFile(filename: "phi-split.c", directory: "") 139!4 = !{} 140!5 = !{!0} 141!6 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) 142!7 = !{i32 1, !"NumRegisterParameters", i32 0} 143!8 = !{i32 2, !"Dwarf Version", i32 4} 144!9 = !{i32 2, !"Debug Info Version", i32 3} 145!10 = !{i32 1, !"wchar_size", i32 4} 146!11 = !{!"clang version 7.0.0 (x)"} 147!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) 148!13 = !DISubroutineType(types: !14) 149!14 = !{!15} 150!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 151!16 = !{!17, !18, !19, !21, !26} 152!17 = !DILocalVariable(name: "x", scope: !12, file: !3, line: 4, type: !6) 153!18 = !DILocalVariable(name: "y", scope: !12, file: !3, line: 5, type: !6) 154!19 = !DILocalVariable(name: "u", scope: !20, file: !3, line: 6, type: !6) 155!20 = distinct !DILexicalBlock(scope: !12, file: !3, line: 6, column: 3) 156!21 = !DILocalVariable(name: "arr", scope: !12, file: !3, line: 11, type: !22) 157!22 = !DICompositeType(tag: DW_TAG_array_type, baseType: !23, size: 5120, elements: !24) 158!23 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6) 159!24 = !{!25} 160!25 = !DISubrange(count: 80) 161!26 = !DILocalVariable(name: "q", scope: !27, file: !3, line: 12, type: !6) 162!27 = distinct !DILexicalBlock(scope: !12, file: !3, line: 12, column: 3) 163!28 = !DILocation(line: 4, column: 13, scope: !12) 164!29 = !DILocation(line: 5, column: 13, scope: !12) 165!30 = !DILocation(line: 6, column: 18, scope: !20) 166!31 = !DILocation(line: 6, column: 29, scope: !32) 167!32 = distinct !DILexicalBlock(scope: !20, file: !3, line: 6, column: 3) 168!37 = !DILocation(line: 6, column: 27, scope: !32) 169!38 = !DILocation(line: 6, column: 3, scope: !20) 170!39 = !DILocation(line: 11, column: 3, scope: !12) 171!40 = !DILocation(line: 11, column: 22, scope: !12) 172!41 = !DILocation(line: 12, column: 18, scope: !27) 173!42 = !DILocation(line: 12, column: 3, scope: !27) 174!43 = !DILocation(line: 7, column: 7, scope: !44) 175!44 = distinct !DILexicalBlock(scope: !32, file: !3, line: 6, column: 39) 176!45 = !DILocation(line: 8, column: 11, scope: !44) 177!46 = !DILocation(line: 6, column: 34, scope: !32) 178!47 = distinct !{!47, !38, !48} 179!48 = !DILocation(line: 9, column: 3, scope: !20) 180!50 = !DILocation(line: 16, column: 3, scope: !12) 181!51 = !DILocation(line: 13, column: 16, scope: !52) 182!52 = distinct !DILexicalBlock(scope: !53, file: !3, line: 12, column: 38) 183!53 = distinct !DILexicalBlock(scope: !27, file: !3, line: 12, column: 3) 184!54 = !DILocation(line: 13, column: 5, scope: !52) 185!55 = !DILocation(line: 13, column: 12, scope: !52) 186!56 = !DILocation(line: 12, column: 33, scope: !53) 187!57 = !DILocation(line: 12, column: 27, scope: !53) 188!58 = distinct !{!58, !42, !59} 189!59 = !DILocation(line: 14, column: 3, scope: !27) 190