1 ; RUN: llc < %s -O0 -verify-machineinstrs | FileCheck %s 2 3 ; Test verifies if .loc is properly set for loop and block instructions -- 4 ; the line number is not a 0 when DebugLoc is defined. 5 6 ; Compiled from the dbg-loop-loc.c: 7 ; int fib(int n) { 8 ; int i, t, a = 0, b = 1; 9 ; for (i = 0; i < n; i++) { 10 ; t = a + b; a = b; b = t; 11 ; } 12 ; return b; 13 ; } 14 15 ; ModuleID = 'dbg-loop-loc.bc' 16 source_filename = "dbg-loop-loc.c" 17 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" 18 target triple = "wasm32-unknown-unknown" 19 20 ; CHECK: .file 1 21 ; CHECK: .loc 1 1 0 22 ; CHECK: .loc 1 3 15 23 ; CHECK-NEXT: block 24 ; CHECK-NEXT: loop 25 ; CHECK: br 0 26 ; CHECK-NOT: .loc 1 0 27 ; CHECK: end_loop 28 ; CHECK: end_block 29 ; CHECK-NOT: .loc 1 0 30 ; CHECK: end_function 31 32 ; Function Attrs: noinline nounwind optnone 33 define hidden i32 @fib(i32 %n) #0 !dbg !7 { 34 entry: 35 %n.addr = alloca i32, align 4 36 %i = alloca i32, align 4 37 %t = alloca i32, align 4 38 %a = alloca i32, align 4 39 %b = alloca i32, align 4 40 store i32 %n, i32* %n.addr, align 4 41 call void @llvm.dbg.declare(metadata i32* %n.addr, metadata !11, metadata !DIExpression()), !dbg !12 42 call void @llvm.dbg.declare(metadata i32* %i, metadata !13, metadata !DIExpression()), !dbg !14 43 call void @llvm.dbg.declare(metadata i32* %t, metadata !15, metadata !DIExpression()), !dbg !16 44 call void @llvm.dbg.declare(metadata i32* %a, metadata !17, metadata !DIExpression()), !dbg !18 45 store i32 0, i32* %a, align 4, !dbg !18 46 call void @llvm.dbg.declare(metadata i32* %b, metadata !19, metadata !DIExpression()), !dbg !20 47 store i32 1, i32* %b, align 4, !dbg !20 48 store i32 0, i32* %i, align 4, !dbg !21 49 br label %for.cond, !dbg !23 50 51 for.cond: ; preds = %for.inc, %entry 52 %0 = load i32, i32* %i, align 4, !dbg !24 53 %1 = load i32, i32* %n.addr, align 4, !dbg !26 54 %cmp = icmp slt i32 %0, %1, !dbg !27 55 br i1 %cmp, label %for.body, label %for.end, !dbg !28 56 57 for.body: ; preds = %for.cond 58 %2 = load i32, i32* %a, align 4, !dbg !29 59 %3 = load i32, i32* %b, align 4, !dbg !31 60 %add = add nsw i32 %2, %3, !dbg !32 61 store i32 %add, i32* %t, align 4, !dbg !33 62 %4 = load i32, i32* %b, align 4, !dbg !34 63 store i32 %4, i32* %a, align 4, !dbg !35 64 %5 = load i32, i32* %t, align 4, !dbg !36 65 store i32 %5, i32* %b, align 4, !dbg !37 66 br label %for.inc, !dbg !38 67 68 for.inc: ; preds = %for.body 69 %6 = load i32, i32* %i, align 4, !dbg !39 70 %inc = add nsw i32 %6, 1, !dbg !39 71 store i32 %inc, i32* %i, align 4, !dbg !39 72 br label %for.cond, !dbg !40, !llvm.loop !41 73 74 for.end: ; preds = %for.cond 75 %7 = load i32, i32* %b, align 4, !dbg !43 76 ret i32 %7, !dbg !44 77 } 78 79 ; Function Attrs: nounwind readnone speculatable 80 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 81 82 attributes #0 = { noinline nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } 83 attributes #1 = { nounwind readnone speculatable } 84 85 !llvm.dbg.cu = !{!0} 86 !llvm.module.flags = !{!3, !4, !5} 87 !llvm.ident = !{!6} 88 89 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 326837)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 90 !1 = !DIFile(filename: "dbg-loop-loc.c", directory: "/Users/yury/llvmwasm") 91 !2 = !{} 92 !3 = !{i32 2, !"Dwarf Version", i32 4} 93 !4 = !{i32 2, !"Debug Info Version", i32 3} 94 !5 = !{i32 1, !"wchar_size", i32 4} 95 !6 = !{!"clang version 7.0.0 (trunk 326837)"} 96 !7 = distinct !DISubprogram(name: "fib", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) 97 !8 = !DISubroutineType(types: !9) 98 !9 = !{!10, !10} 99 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 100 !11 = !DILocalVariable(name: "n", arg: 1, scope: !7, file: !1, line: 1, type: !10) 101 !12 = !DILocation(line: 1, column: 13, scope: !7) 102 !13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 2, type: !10) 103 !14 = !DILocation(line: 2, column: 7, scope: !7) 104 !15 = !DILocalVariable(name: "t", scope: !7, file: !1, line: 2, type: !10) 105 !16 = !DILocation(line: 2, column: 10, scope: !7) 106 !17 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 2, type: !10) 107 !18 = !DILocation(line: 2, column: 13, scope: !7) 108 !19 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 2, type: !10) 109 !20 = !DILocation(line: 2, column: 20, scope: !7) 110 !21 = !DILocation(line: 3, column: 10, scope: !22) 111 !22 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3) 112 !23 = !DILocation(line: 3, column: 8, scope: !22) 113 !24 = !DILocation(line: 3, column: 15, scope: !25) 114 !25 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 3) 115 !26 = !DILocation(line: 3, column: 19, scope: !25) 116 !27 = !DILocation(line: 3, column: 17, scope: !25) 117 !28 = !DILocation(line: 3, column: 3, scope: !22) 118 !29 = !DILocation(line: 4, column: 9, scope: !30) 119 !30 = distinct !DILexicalBlock(scope: !25, file: !1, line: 3, column: 27) 120 !31 = !DILocation(line: 4, column: 13, scope: !30) 121 !32 = !DILocation(line: 4, column: 11, scope: !30) 122 !33 = !DILocation(line: 4, column: 7, scope: !30) 123 !34 = !DILocation(line: 4, column: 20, scope: !30) 124 !35 = !DILocation(line: 4, column: 18, scope: !30) 125 !36 = !DILocation(line: 4, column: 27, scope: !30) 126 !37 = !DILocation(line: 4, column: 25, scope: !30) 127 !38 = !DILocation(line: 5, column: 3, scope: !30) 128 !39 = !DILocation(line: 3, column: 23, scope: !25) 129 !40 = !DILocation(line: 3, column: 3, scope: !25) 130 !41 = distinct !{!41, !28, !42} 131 !42 = !DILocation(line: 5, column: 3, scope: !22) 132 !43 = !DILocation(line: 6, column: 10, scope: !7) 133 !44 = !DILocation(line: 6, column: 3, scope: !7) 134
