1 ; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/gcc-simple.afdo -S | FileCheck %s 2 ; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/gcc-simple.afdo -S | FileCheck %s 3 ; XFAIL: powerpc64-, s390x, mips-, mips64-, sparc 4 ; Original code: 5 ; 6 ; #include <stdlib.h> 7 ; 8 ; long long int foo(long i) { 9 ; if (rand() < 500) return 2; else if (rand() > 5000) return 10; else return 90; 10 ; } 11 ; 12 ; int main() { 13 ; long long int sum = 0; 14 ; for (int k = 0; k < 3000; k++) 15 ; for (int i = 0; i < 200000; i++) sum += foo(i); 16 ; return sum > 0 ? 0 : 1; 17 ; } 18 ; 19 ; This test was compiled down to bytecode at -O0 to avoid inlining foo() into 20 ; main(). The profile was generated using a GCC-generated binary (also compiled 21 ; at -O0). The conversion from the Linux Perf profile to the GCC autofdo 22 ; profile used the converter at https://github.com/google/autofdo 23 ; 24 ; $ gcc -g -O0 gcc-simple.cc -o gcc-simple 25 ; $ perf record -b ./gcc-simple 26 ; $ create_gcov --binary=gcc-simple --gcov=gcc-simple.afdo 27 28 define i64 @_Z3fool(i64 %i) #0 !dbg !4 { 29 ; CHECK: !prof ![[EC1:[0-9]+]] 30 entry: 31 %retval = alloca i64, align 8 32 %i.addr = alloca i64, align 8 33 store i64 %i, i64* %i.addr, align 8 34 call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !16, metadata !17), !dbg !18 35 %call = call i32 @rand() #3, !dbg !19 36 %cmp = icmp slt i32 %call, 500, !dbg !21 37 br i1 %cmp, label %if.then, label %if.else, !dbg !22 38 ; CHECK: !prof ![[PROF1:[0-9]+]] 39 40 if.then: ; preds = %entry 41 store i64 2, i64* %retval, align 8, !dbg !23 42 br label %return, !dbg !23 43 44 if.else: ; preds = %entry 45 %call1 = call i32 @rand() #3, !dbg !25 46 %cmp2 = icmp sgt i32 %call1, 5000, !dbg !28 47 br i1 %cmp2, label %if.then.3, label %if.else.4, !dbg !29 48 ; CHECK: !prof ![[PROF2:[0-9]+]] 49 50 if.then.3: ; preds = %if.else 51 store i64 10, i64* %retval, align 8, !dbg !30 52 br label %return, !dbg !30 53 54 if.else.4: ; preds = %if.else 55 store i64 90, i64* %retval, align 8, !dbg !32 56 br label %return, !dbg !32 57 58 return: ; preds = %if.else.4, %if.then.3, %if.then 59 %0 = load i64, i64* %retval, align 8, !dbg !34 60 ret i64 %0, !dbg !34 61 } 62 63 ; Function Attrs: nounwind readnone 64 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 65 66 ; Function Attrs: nounwind 67 declare i32 @rand() #2 68 69 ; Function Attrs: nounwind uwtable 70 define i32 @main() #0 !dbg !9 { 71 ; CHECK: !prof ![[EC2:[0-9]+]] 72 entry: 73 %retval = alloca i32, align 4 74 %sum = alloca i64, align 8 75 %k = alloca i32, align 4 76 %i = alloca i32, align 4 77 store i32 0, i32* %retval, align 4 78 call void @llvm.dbg.declare(metadata i64* %sum, metadata !35, metadata !17), !dbg !36 79 store i64 0, i64* %sum, align 8, !dbg !36 80 call void @llvm.dbg.declare(metadata i32* %k, metadata !37, metadata !17), !dbg !39 81 store i32 0, i32* %k, align 4, !dbg !39 82 br label %for.cond, !dbg !40 83 84 for.cond: ; preds = %for.inc.4, %entry 85 %0 = load i32, i32* %k, align 4, !dbg !41 86 %cmp = icmp slt i32 %0, 3000, !dbg !45 87 br i1 %cmp, label %for.body, label %for.end.6, !dbg !46 88 ; CHECK: !prof ![[PROF3:[0-9]+]] 89 90 for.body: ; preds = %for.cond 91 call void @llvm.dbg.declare(metadata i32* %i, metadata !47, metadata !17), !dbg !49 92 store i32 0, i32* %i, align 4, !dbg !49 93 br label %for.cond.1, !dbg !50 94 95 for.cond.1: ; preds = %for.inc, %for.body 96 %1 = load i32, i32* %i, align 4, !dbg !51 97 %cmp2 = icmp slt i32 %1, 200000, !dbg !55 98 br i1 %cmp2, label %for.body.3, label %for.end, !dbg !56 99 ; CHECK: !prof ![[PROF4:[0-9]+]] 100 101 for.body.3: ; preds = %for.cond.1 102 %2 = load i32, i32* %i, align 4, !dbg !57 103 %conv = sext i32 %2 to i64, !dbg !57 104 %call = call i64 @_Z3fool(i64 %conv), !dbg !59 105 %3 = load i64, i64* %sum, align 8, !dbg !60 106 %add = add nsw i64 %3, %call, !dbg !60 107 store i64 %add, i64* %sum, align 8, !dbg !60 108 br label %for.inc, !dbg !61 109 110 for.inc: ; preds = %for.body.3 111 %4 = load i32, i32* %i, align 4, !dbg !62 112 %inc = add nsw i32 %4, 1, !dbg !62 113 store i32 %inc, i32* %i, align 4, !dbg !62 114 br label %for.cond.1, !dbg !64 115 116 for.end: ; preds = %for.cond.1 117 br label %for.inc.4, !dbg !65 118 119 for.inc.4: ; preds = %for.end 120 %5 = load i32, i32* %k, align 4, !dbg !67 121 %inc5 = add nsw i32 %5, 1, !dbg !67 122 store i32 %inc5, i32* %k, align 4, !dbg !67 123 br label %for.cond, !dbg !68 124 125 for.end.6: ; preds = %for.cond 126 %6 = load i64, i64* %sum, align 8, !dbg !69 127 %cmp7 = icmp sgt i64 %6, 0, !dbg !70 128 %cond = select i1 %cmp7, i32 0, i32 1, !dbg !69 129 ret i32 %cond, !dbg !71 130 } 131 132 ; CHECK ![[EC1]] = !{!"function_entry_count", i64 24108} 133 ; CHECK ![[PROF1]] = !{!"branch_weights", i32 1, i32 30124} 134 ; CHECK ![[PROF2]] = !{!"branch_weights", i32 30177, i32 29579} 135 ; CHECK ![[EC2]] = !{!"function_entry_count", i64 0} 136 ; CHECK ![[PROF3]] = !{!"branch_weights", i32 1, i32 1} 137 ; CHECK ![[PROF4]] = !{!"branch_weights", i32 1, i32 20238} 138 139 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 140 attributes #1 = { nounwind readnone } 141 attributes #2 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } 142 attributes #3 = { nounwind } 143 144 !llvm.dbg.cu = !{!0} 145 !llvm.module.flags = !{!13, !14} 146 !llvm.ident = !{!15} 147 148 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 247554) (llvm/trunk 247557)", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) 149 !1 = !DIFile(filename: "discriminator.cc", directory: "/usr/local/google/home/dnovillo/llvm/test/autofdo") 150 !2 = !{} 151 !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) 152 !5 = !DISubroutineType(types: !6) 153 !6 = !{!7, !8} 154 !7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) 155 !8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 156 !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) 157 !10 = !DISubroutineType(types: !11) 158 !11 = !{!12} 159 !12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 160 !13 = !{i32 2, !"Dwarf Version", i32 4} 161 !14 = !{i32 2, !"Debug Info Version", i32 3} 162 !15 = !{!"clang version 3.8.0 (trunk 247554) (llvm/trunk 247557)"} 163 !16 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 3, type: !8) 164 !17 = !DIExpression() 165 !18 = !DILocation(line: 3, column: 24, scope: !4) 166 !19 = !DILocation(line: 4, column: 7, scope: !20) 167 !20 = distinct !DILexicalBlock(scope: !4, file: !1, line: 4, column: 7) 168 !21 = !DILocation(line: 4, column: 14, scope: !20) 169 !22 = !DILocation(line: 4, column: 7, scope: !4) 170 !23 = !DILocation(line: 4, column: 21, scope: !24) 171 !24 = !DILexicalBlockFile(scope: !20, file: !1, discriminator: 1) 172 !25 = !DILocation(line: 4, column: 40, scope: !26) 173 !26 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 2) 174 !27 = distinct !DILexicalBlock(scope: !20, file: !1, line: 4, column: 40) 175 !28 = !DILocation(line: 4, column: 47, scope: !27) 176 !29 = !DILocation(line: 4, column: 40, scope: !20) 177 !30 = !DILocation(line: 4, column: 55, scope: !31) 178 !31 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 3) 179 !32 = !DILocation(line: 4, column: 71, scope: !33) 180 !33 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 4) 181 !34 = !DILocation(line: 5, column: 1, scope: !4) 182 !35 = !DILocalVariable(name: "sum", scope: !9, file: !1, line: 8, type: !7) 183 !36 = !DILocation(line: 8, column: 17, scope: !9) 184 !37 = !DILocalVariable(name: "k", scope: !38, file: !1, line: 9, type: !12) 185 !38 = distinct !DILexicalBlock(scope: !9, file: !1, line: 9, column: 3) 186 !39 = !DILocation(line: 9, column: 12, scope: !38) 187 !40 = !DILocation(line: 9, column: 8, scope: !38) 188 !41 = !DILocation(line: 9, column: 19, scope: !42) 189 !42 = !DILexicalBlockFile(scope: !43, file: !1, discriminator: 2) 190 !43 = !DILexicalBlockFile(scope: !44, file: !1, discriminator: 1) 191 !44 = distinct !DILexicalBlock(scope: !38, file: !1, line: 9, column: 3) 192 !45 = !DILocation(line: 9, column: 21, scope: !44) 193 !46 = !DILocation(line: 9, column: 3, scope: !38) 194 !47 = !DILocalVariable(name: "i", scope: !48, file: !1, line: 10, type: !12) 195 !48 = distinct !DILexicalBlock(scope: !44, file: !1, line: 10, column: 5) 196 !49 = !DILocation(line: 10, column: 14, scope: !48) 197 !50 = !DILocation(line: 10, column: 10, scope: !48) 198 !51 = !DILocation(line: 10, column: 21, scope: !52) 199 !52 = !DILexicalBlockFile(scope: !53, file: !1, discriminator: 5) 200 !53 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 1) 201 !54 = distinct !DILexicalBlock(scope: !48, file: !1, line: 10, column: 5) 202 !55 = !DILocation(line: 10, column: 23, scope: !54) 203 !56 = !DILocation(line: 10, column: 5, scope: !48) 204 !57 = !DILocation(line: 10, column: 49, scope: !58) 205 !58 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 2) 206 !59 = !DILocation(line: 10, column: 45, scope: !54) 207 !60 = !DILocation(line: 10, column: 42, scope: !54) 208 !61 = !DILocation(line: 10, column: 38, scope: !54) 209 !62 = !DILocation(line: 10, column: 34, scope: !63) 210 !63 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 4) 211 !64 = !DILocation(line: 10, column: 5, scope: !54) 212 !65 = !DILocation(line: 10, column: 50, scope: !66) 213 !66 = !DILexicalBlockFile(scope: !48, file: !1, discriminator: 3) 214 !67 = !DILocation(line: 9, column: 30, scope: !44) 215 !68 = !DILocation(line: 9, column: 3, scope: !44) 216 !69 = !DILocation(line: 11, column: 10, scope: !9) 217 !70 = !DILocation(line: 11, column: 14, scope: !9) 218 !71 = !DILocation(line: 11, column: 3, scope: !9) 219
