1 ; RUN: opt < %s -instcombine -sample-profile -sample-profile-file=%S/Inputs/inline-coverage.prof -sample-profile-check-record-coverage=100 -sample-profile-check-sample-coverage=110 -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/inline-coverage.prof -sample-profile-check-record-coverage=100 -sample-profile-check-sample-coverage=110 -pass-remarks=sample-profile -o /dev/null 2>&1 | FileCheck %s 3 ; 4 ; Original code: 5 ; 6 ; 1 #include <stdlib.h> 7 ; 2 8 ; 3 long long int foo(long i) { 9 ; 4 return rand() * i; 10 ; 5 } 11 ; 6 12 ; 7 int main() { 13 ; 8 long long int sum = 0; 14 ; 9 for (int i = 0; i < 200000 * 3000; i++) 15 ; 10 sum += foo(i); 16 ; 11 return sum > 0 ? 0 : 1; 17 ; 12 } 18 ; 19 ; CHECK: remark: coverage.cc:10:12: inlined hot callee '_Z3fool' with 172746 samples into 'main' 20 ; CHECK: remark: coverage.cc:9:21: Applied 23478 samples from profile (offset: 2.1) 21 ; CHECK: remark: coverage.cc:10:16: Applied 23478 samples from profile (offset: 3) 22 ; CHECK: remark: coverage.cc:4:10: Applied 31878 samples from profile (offset: 1) 23 ; CHECK: remark: coverage.cc:11:10: Applied 0 samples from profile (offset: 4) 24 ; CHECK: remark: coverage.cc:10:16: most popular destination for conditional branches at coverage.cc:9:3 25 ; 26 ; There is one sample record with 0 samples at offset 4 in main() that we never 27 ; use: 28 ; CHECK: warning: coverage.cc:7: 4 of 5 available profile records (80%) were applied 29 ; 30 ; Since the unused sample record contributes no samples, sample coverage should 31 ; be 100%. Note that we get this warning because we are requesting an impossible 32 ; 110% coverage check. 33 ; CHECK: warning: coverage.cc:7: 78834 of 78834 available profile samples (100%) were applied 34 35 define i64 @_Z3fool(i64 %i) !dbg !4 { 36 entry: 37 %i.addr = alloca i64, align 8 38 store i64 %i, i64* %i.addr, align 8 39 call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !16, metadata !17), !dbg !18 40 %call = call i32 @rand(), !dbg !19 41 %conv = sext i32 %call to i64, !dbg !19 42 %0 = load i64, i64* %i.addr, align 8, !dbg !20 43 %mul = mul nsw i64 %conv, %0, !dbg !21 44 ret i64 %mul, !dbg !22 45 } 46 47 declare void @llvm.dbg.declare(metadata, metadata, metadata) 48 49 declare i32 @rand() 50 51 define i32 @main() !dbg !9 { 52 entry: 53 %retval = alloca i32, align 4 54 %sum = alloca i64, align 8 55 %i = alloca i32, align 4 56 store i32 0, i32* %retval, align 4 57 call void @llvm.dbg.declare(metadata i64* %sum, metadata !23, metadata !17), !dbg !24 58 store i64 0, i64* %sum, align 8, !dbg !24 59 call void @llvm.dbg.declare(metadata i32* %i, metadata !25, metadata !17), !dbg !27 60 store i32 0, i32* %i, align 4, !dbg !27 61 br label %for.cond, !dbg !28 62 63 for.cond: ; preds = %for.inc, %entry 64 %0 = load i32, i32* %i, align 4, !dbg !29 65 %cmp = icmp slt i32 %0, 600000000, !dbg !32 66 br i1 %cmp, label %for.body, label %for.end, !dbg !33 67 68 for.body: ; preds = %for.cond 69 %1 = load i32, i32* %i, align 4, !dbg !34 70 %conv = sext i32 %1 to i64, !dbg !34 71 %call = call i64 @_Z3fool(i64 %conv), !dbg !35 72 %2 = load i64, i64* %sum, align 8, !dbg !36 73 %add = add nsw i64 %2, %call, !dbg !36 74 store i64 %add, i64* %sum, align 8, !dbg !36 75 br label %for.inc, !dbg !37 76 77 for.inc: ; preds = %for.body 78 %3 = load i32, i32* %i, align 4, !dbg !38 79 %inc = add nsw i32 %3, 1, !dbg !38 80 store i32 %inc, i32* %i, align 4, !dbg !38 81 br label %for.cond, !dbg !39 82 83 for.end: ; preds = %for.cond 84 %4 = load i64, i64* %sum, align 8, !dbg !40 85 %cmp1 = icmp sgt i64 %4, 0, !dbg !41 86 %cond = select i1 %cmp1, i32 0, i32 1, !dbg !40 87 ret i32 %cond, !dbg !42 88 } 89 90 !llvm.dbg.cu = !{!0} 91 !llvm.module.flags = !{!13, !14} 92 !llvm.ident = !{!15} 93 94 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 251738) (llvm/trunk 251737)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) 95 !1 = !DIFile(filename: "coverage.cc", directory: ".") 96 !2 = !{} 97 !4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fool", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 98 !5 = !DISubroutineType(types: !6) 99 !6 = !{!7, !8} 100 !7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) 101 !8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 102 !9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 103 !10 = !DISubroutineType(types: !11) 104 !11 = !{!12} 105 !12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 106 !13 = !{i32 2, !"Dwarf Version", i32 4} 107 !14 = !{i32 2, !"Debug Info Version", i32 3} 108 !15 = !{!"clang version 3.8.0 (trunk 251738) (llvm/trunk 251737)"} 109 !16 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 3, type: !8) 110 !17 = !DIExpression() 111 !18 = !DILocation(line: 3, column: 24, scope: !4) 112 !19 = !DILocation(line: 4, column: 10, scope: !4) 113 !20 = !DILocation(line: 4, column: 19, scope: !4) 114 !21 = !DILocation(line: 4, column: 17, scope: !4) 115 !22 = !DILocation(line: 4, column: 3, scope: !4) 116 !23 = !DILocalVariable(name: "sum", scope: !9, file: !1, line: 8, type: !7) 117 !24 = !DILocation(line: 8, column: 17, scope: !9) 118 !25 = !DILocalVariable(name: "i", scope: !26, file: !1, line: 9, type: !12) 119 !26 = distinct !DILexicalBlock(scope: !9, file: !1, line: 9, column: 3) 120 !27 = !DILocation(line: 9, column: 12, scope: !26) 121 !28 = !DILocation(line: 9, column: 8, scope: !26) 122 !29 = !DILocation(line: 9, column: 19, scope: !30) 123 !30 = !DILexicalBlockFile(scope: !31, file: !1, discriminator: 1) 124 !31 = distinct !DILexicalBlock(scope: !26, file: !1, line: 9, column: 3) 125 !32 = !DILocation(line: 9, column: 21, scope: !30) 126 !33 = !DILocation(line: 9, column: 3, scope: !30) 127 !34 = !DILocation(line: 10, column: 16, scope: !31) 128 !35 = !DILocation(line: 10, column: 12, scope: !31) 129 !36 = !DILocation(line: 10, column: 9, scope: !31) 130 !37 = !DILocation(line: 10, column: 5, scope: !31) 131 !38 = !DILocation(line: 9, column: 39, scope: !31) 132 !39 = !DILocation(line: 9, column: 3, scope: !31) 133 !40 = !DILocation(line: 11, column: 10, scope: !9) 134 !41 = !DILocation(line: 11, column: 14, scope: !9) 135 !42 = !DILocation(line: 11, column: 3, scope: !9) 136
