1 ; RUN: opt < %s -instcombine -sample-profile -sample-profile-file=%S/Inputs/cov-zero-samples.prof -sample-profile-check-record-coverage=100 -pass-remarks=sample-profile -o /dev/null 2>&1 | FileCheck %s 2 ; RUN: opt < %s -passes="function(instcombine),sample-profile" -sample-profile-file=%S/Inputs/cov-zero-samples.prof -sample-profile-check-record-coverage=100 -pass-remarks=sample-profile -o /dev/null 2>&1 | FileCheck %s 3 ; 4 ; CHECK: remark: cov-zero-samples.cc:9:29: Applied 404065 samples from profile (offset: 2.1) 5 ; CHECK: remark: cov-zero-samples.cc:10:9: Applied 443089 samples from profile (offset: 3) 6 ; CHECK: remark: cov-zero-samples.cc:10:36: Applied 0 samples from profile (offset: 3.1) 7 ; CHECK: remark: cov-zero-samples.cc:11:12: Applied 404066 samples from profile (offset: 4) 8 ; CHECK: remark: cov-zero-samples.cc:13:25: Applied 0 samples from profile (offset: 6) 9 ; CHECK: remark: cov-zero-samples.cc:14:3: Applied 0 samples from profile (offset: 7) 10 ; CHECK: remark: cov-zero-samples.cc:10:9: most popular destination for conditional branches at cov-zero-samples.cc:9:3 11 ; CHECK: remark: cov-zero-samples.cc:11:12: most popular destination for conditional branches at cov-zero-samples.cc:10:9 12 ; 13 ; Coverage for this profile should be 100% 14 ; CHECK-NOT: warning: cov-zero-samples.cc:1: 15 16 @N = global i64 8000000000, align 8 17 @.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1 18 19 ; Function Attrs: nounwind uwtable 20 define i32 @_Z12never_calledi(i32 %i) !dbg !4 { 21 entry: 22 ret i32 0, !dbg !32 23 } 24 25 ; Function Attrs: nounwind readnone 26 declare void @llvm.dbg.declare(metadata, metadata, metadata) 27 28 ; Function Attrs: norecurse uwtable 29 define i32 @main() !dbg !8 { 30 entry: 31 %retval = alloca i32, align 4 32 %sum = alloca i32, align 4 33 %i = alloca i64, align 8 34 store i32 0, i32* %retval, align 4 35 call void @llvm.dbg.declare(metadata i32* %sum, metadata !33, metadata !19), !dbg !34 36 store i32 0, i32* %sum, align 4, !dbg !34 37 call void @llvm.dbg.declare(metadata i64* %i, metadata !35, metadata !19), !dbg !37 38 store i64 0, i64* %i, align 8, !dbg !37 39 br label %for.cond, !dbg !38 40 41 for.cond: ; preds = %for.inc, %entry 42 %0 = load i64, i64* %i, align 8, !dbg !39 43 %1 = load volatile i64, i64* @N, align 8, !dbg !42 44 %cmp = icmp slt i64 %0, %1, !dbg !43 45 br i1 %cmp, label %for.body, label %for.end, !dbg !44 46 47 for.body: ; preds = %for.cond 48 %2 = load i64, i64* %i, align 8, !dbg !45 49 %3 = load volatile i64, i64* @N, align 8, !dbg !48 50 %cmp1 = icmp sgt i64 %2, %3, !dbg !49 51 br i1 %cmp1, label %if.then, label %if.end, !dbg !50 52 53 if.then: ; preds = %for.body 54 %4 = load i64, i64* %i, align 8, !dbg !51 55 %conv = trunc i64 %4 to i32, !dbg !51 56 %call = call i32 @_Z12never_calledi(i32 %conv), !dbg !53 57 %5 = load i32, i32* %sum, align 4, !dbg !54 58 %add = add nsw i32 %5, %call, !dbg !54 59 store i32 %add, i32* %sum, align 4, !dbg !54 60 br label %if.end, !dbg !55 61 62 if.end: ; preds = %if.then, %for.body 63 %6 = load i64, i64* %i, align 8, !dbg !56 64 %div = sdiv i64 %6, 239, !dbg !57 65 %7 = load i32, i32* %sum, align 4, !dbg !58 66 %conv2 = sext i32 %7 to i64, !dbg !58 67 %mul = mul nsw i64 %conv2, %div, !dbg !58 68 %conv3 = trunc i64 %mul to i32, !dbg !58 69 store i32 %conv3, i32* %sum, align 4, !dbg !58 70 br label %for.inc, !dbg !59 71 72 for.inc: ; preds = %if.end 73 %8 = load i64, i64* %i, align 8, !dbg !60 74 %inc = add nsw i64 %8, 1, !dbg !60 75 store i64 %inc, i64* %i, align 8, !dbg !60 76 br label %for.cond, !dbg !62 77 78 for.end: ; preds = %for.cond 79 %9 = load i32, i32* %sum, align 4, !dbg !63 80 %call4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 %9), !dbg !64 81 ret i32 0, !dbg !65 82 } 83 84 declare i32 @printf(i8*, ...) 85 86 !llvm.dbg.cu = !{!0} 87 !llvm.module.flags = !{!15, !16} 88 !llvm.ident = !{!17} 89 90 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2, globals: !11) 91 !1 = !DIFile(filename: "cov-zero-samples.cc", directory: ".") 92 !2 = !{} 93 !4 = distinct !DISubprogram(name: "never_called", linkageName: "_Z12never_calledi", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 94 !5 = !DISubroutineType(types: !6) 95 !6 = !{!7, !7} 96 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 97 !8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !9, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 98 !9 = !DISubroutineType(types: !10) 99 !10 = !{!7} 100 !11 = !{!12} 101 !12 = !DIGlobalVariable(name: "N", scope: !0, file: !1, line: 3, type: !13, isLocal: false, isDefinition: true, variable: i64* @N) 102 !13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !14) 103 !14 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) 104 !15 = !{i32 2, !"Dwarf Version", i32 4} 105 !16 = !{i32 2, !"Debug Info Version", i32 3} 106 !17 = !{!"clang version 3.8.0 (trunk 253667) (llvm/trunk 253670)"} 107 !19 = !DIExpression() 108 !31 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3) 109 !32 = !DILocation(line: 5, column: 27, scope: !31) 110 !33 = !DILocalVariable(name: "sum", scope: !8, file: !1, line: 8, type: !7) 111 !34 = !DILocation(line: 8, column: 7, scope: !8) 112 !35 = !DILocalVariable(name: "i", scope: !36, file: !1, line: 9, type: !14) 113 !36 = distinct !DILexicalBlock(scope: !8, file: !1, line: 9, column: 3) 114 !37 = !DILocation(line: 9, column: 18, scope: !36) 115 !38 = !DILocation(line: 9, column: 8, scope: !36) 116 !39 = !DILocation(line: 9, column: 25, scope: !40) 117 !40 = !DILexicalBlockFile(scope: !41, file: !1, discriminator: 1) 118 !41 = distinct !DILexicalBlock(scope: !36, file: !1, line: 9, column: 3) 119 !42 = !DILocation(line: 9, column: 29, scope: !40) 120 !43 = !DILocation(line: 9, column: 27, scope: !40) 121 !44 = !DILocation(line: 9, column: 3, scope: !40) 122 !45 = !DILocation(line: 10, column: 9, scope: !46) 123 !46 = distinct !DILexicalBlock(scope: !47, file: !1, line: 10, column: 9) 124 !47 = distinct !DILexicalBlock(scope: !41, file: !1, line: 9, column: 37) 125 !48 = !DILocation(line: 10, column: 13, scope: !46) 126 !49 = !DILocation(line: 10, column: 11, scope: !46) 127 !50 = !DILocation(line: 10, column: 9, scope: !47) 128 !51 = !DILocation(line: 10, column: 36, scope: !52) 129 !52 = !DILexicalBlockFile(scope: !46, file: !1, discriminator: 1) 130 !53 = !DILocation(line: 10, column: 23, scope: !52) 131 !54 = !DILocation(line: 10, column: 20, scope: !52) 132 !55 = !DILocation(line: 10, column: 16, scope: !52) 133 !56 = !DILocation(line: 11, column: 12, scope: !47) 134 !57 = !DILocation(line: 11, column: 14, scope: !47) 135 !58 = !DILocation(line: 11, column: 9, scope: !47) 136 !59 = !DILocation(line: 12, column: 3, scope: !47) 137 !60 = !DILocation(line: 9, column: 33, scope: !61) 138 !61 = !DILexicalBlockFile(scope: !41, file: !1, discriminator: 2) 139 !62 = !DILocation(line: 9, column: 3, scope: !61) 140 !63 = !DILocation(line: 13, column: 25, scope: !8) 141 !64 = !DILocation(line: 13, column: 3, scope: !8) 142 !65 = !DILocation(line: 14, column: 3, scope: !8) 143
