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; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/gcc-simple.afdo -S | FileCheck %s |
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; |
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; Original code: |
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; |
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; #include <stdlib.h> |
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; |
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; long long int foo(long i) { |
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; if (rand() < 500) return 2; else if (rand() > 5000) return 10; else return 90; |
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; } |
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; |
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; int main() { |
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; long long int sum = 0; |
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; for (int k = 0; k < 3000; k++) |
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; for (int i = 0; i < 200000; i++) sum += foo(i); |
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; return sum > 0 ? 0 : 1; |
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; } |
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; |
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; This test was compiled down to bytecode at -O0 to avoid inlining foo() into |
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; main(). The profile was generated using a GCC-generated binary (also compiled |
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; at -O0). The conversion from the Linux Perf profile to the GCC autofdo |
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; profile used the converter at https://github.com/google/autofdo |
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; |
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; $ gcc -g -O0 gcc-simple.cc -o gcc-simple |
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; $ perf record -b ./gcc-simple |
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; $ create_gcov --binary=gcc-simple --gcov=gcc-simple.afdo |
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define i64 @_Z3fool(i64 %i) #0 { |
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; CHECK: !prof ![[EC1:[0-9]+]] |
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entry: |
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%retval = alloca i64, align 8 |
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%i.addr = alloca i64, align 8 |
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store i64 %i, i64* %i.addr, align 8 |
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call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !16, metadata !17), !dbg !18 |
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%call = call i32 @rand() #3, !dbg !19 |
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%cmp = icmp slt i32 %call, 500, !dbg !21 |
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br i1 %cmp, label %if.then, label %if.else, !dbg !22 |
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; CHECK: !prof ![[PROF1:[0-9]+]] |
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if.then: ; preds = %entry |
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store i64 2, i64* %retval, align 8, !dbg !23 |
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br label %return, !dbg !23 |
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if.else: ; preds = %entry |
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%call1 = call i32 @rand() #3, !dbg !25 |
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%cmp2 = icmp sgt i32 %call1, 5000, !dbg !28 |
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br i1 %cmp2, label %if.then.3, label %if.else.4, !dbg !29 |
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; CHECK: !prof ![[PROF2:[0-9]+]] |
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if.then.3: ; preds = %if.else |
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store i64 10, i64* %retval, align 8, !dbg !30 |
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br label %return, !dbg !30 |
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if.else.4: ; preds = %if.else |
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store i64 90, i64* %retval, align 8, !dbg !32 |
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br label %return, !dbg !32 |
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return: ; preds = %if.else.4, %if.then.3, %if.then |
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%0 = load i64, i64* %retval, align 8, !dbg !34 |
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ret i64 %0, !dbg !34 |
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} |
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; Function Attrs: nounwind readnone |
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
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; Function Attrs: nounwind |
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declare i32 @rand() #2 |
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; Function Attrs: nounwind uwtable |
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define i32 @main() #0 { |
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; CHECK: !prof ![[EC2:[0-9]+]] |
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entry: |
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%retval = alloca i32, align 4 |
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%sum = alloca i64, align 8 |
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%k = alloca i32, align 4 |
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%i = alloca i32, align 4 |
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store i32 0, i32* %retval, align 4 |
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call void @llvm.dbg.declare(metadata i64* %sum, metadata !35, metadata !17), !dbg !36 |
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store i64 0, i64* %sum, align 8, !dbg !36 |
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call void @llvm.dbg.declare(metadata i32* %k, metadata !37, metadata !17), !dbg !39 |
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store i32 0, i32* %k, align 4, !dbg !39 |
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br label %for.cond, !dbg !40 |
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for.cond: ; preds = %for.inc.4, %entry |
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%0 = load i32, i32* %k, align 4, !dbg !41 |
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%cmp = icmp slt i32 %0, 3000, !dbg !45 |
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br i1 %cmp, label %for.body, label %for.end.6, !dbg !46 |
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; CHECK: !prof ![[PROF3:[0-9]+]] |
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for.body: ; preds = %for.cond |
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call void @llvm.dbg.declare(metadata i32* %i, metadata !47, metadata !17), !dbg !49 |
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store i32 0, i32* %i, align 4, !dbg !49 |
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br label %for.cond.1, !dbg !50 |
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for.cond.1: ; preds = %for.inc, %for.body |
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%1 = load i32, i32* %i, align 4, !dbg !51 |
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%cmp2 = icmp slt i32 %1, 200000, !dbg !55 |
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br i1 %cmp2, label %for.body.3, label %for.end, !dbg !56 |
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; CHECK: !prof ![[PROF4:[0-9]+]] |
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for.body.3: ; preds = %for.cond.1 |
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%2 = load i32, i32* %i, align 4, !dbg !57 |
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%conv = sext i32 %2 to i64, !dbg !57 |
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%call = call i64 @_Z3fool(i64 %conv), !dbg !59 |
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%3 = load i64, i64* %sum, align 8, !dbg !60 |
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%add = add nsw i64 %3, %call, !dbg !60 |
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store i64 %add, i64* %sum, align 8, !dbg !60 |
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br label %for.inc, !dbg !61 |
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for.inc: ; preds = %for.body.3 |
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%4 = load i32, i32* %i, align 4, !dbg !62 |
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%inc = add nsw i32 %4, 1, !dbg !62 |
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store i32 %inc, i32* %i, align 4, !dbg !62 |
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br label %for.cond.1, !dbg !64 |
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for.end: ; preds = %for.cond.1 |
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br label %for.inc.4, !dbg !65 |
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for.inc.4: ; preds = %for.end |
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%5 = load i32, i32* %k, align 4, !dbg !67 |
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%inc5 = add nsw i32 %5, 1, !dbg !67 |
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store i32 %inc5, i32* %k, align 4, !dbg !67 |
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br label %for.cond, !dbg !68 |
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for.end.6: ; preds = %for.cond |
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%6 = load i64, i64* %sum, align 8, !dbg !69 |
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%cmp7 = icmp sgt i64 %6, 0, !dbg !70 |
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%cond = select i1 %cmp7, i32 0, i32 1, !dbg !69 |
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ret i32 %cond, !dbg !71 |
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} |
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; CHECK ![[EC1]] = !{!"function_entry_count", i64 24108} |
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; CHECK ![[PROF1]] = !{!"branch_weights", i32 1, i32 30124} |
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; CHECK ![[PROF2]] = !{!"branch_weights", i32 30177, i32 29579} |
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; CHECK ![[EC2]] = !{!"function_entry_count", i64 0} |
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; CHECK ![[PROF3]] = !{!"branch_weights", i32 1, i32 1} |
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; CHECK ![[PROF4]] = !{!"branch_weights", i32 1, i32 20238} |
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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" } |
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attributes #1 = { nounwind readnone } |
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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" } |
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attributes #3 = { nounwind } |
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!llvm.dbg.cu = !{!0} |
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!llvm.module.flags = !{!13, !14} |
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!llvm.ident = !{!15} |
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!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: 1, enums: !2, subprograms: !3) |
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!1 = !DIFile(filename: "discriminator.cc", directory: "/usr/local/google/home/dnovillo/llvm/test/autofdo") |
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!2 = !{} |
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!3 = !{!4, !9} |
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!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, function: i64 (i64)* @_Z3fool, variables: !2) |
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!5 = !DISubroutineType(types: !6) |
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!6 = !{!7, !8} |
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!7 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed) |
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!8 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) |
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!9 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !10, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, function: i32 ()* @main, variables: !2) |
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!10 = !DISubroutineType(types: !11) |
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!11 = !{!12} |
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!12 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
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!13 = !{i32 2, !"Dwarf Version", i32 4} |
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!14 = !{i32 2, !"Debug Info Version", i32 3} |
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!15 = !{!"clang version 3.8.0 (trunk 247554) (llvm/trunk 247557)"} |
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!16 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 3, type: !8) |
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!17 = !DIExpression() |
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!18 = !DILocation(line: 3, column: 24, scope: !4) |
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!19 = !DILocation(line: 4, column: 7, scope: !20) |
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!20 = distinct !DILexicalBlock(scope: !4, file: !1, line: 4, column: 7) |
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!21 = !DILocation(line: 4, column: 14, scope: !20) |
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!22 = !DILocation(line: 4, column: 7, scope: !4) |
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!23 = !DILocation(line: 4, column: 21, scope: !24) |
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!24 = !DILexicalBlockFile(scope: !20, file: !1, discriminator: 1) |
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!25 = !DILocation(line: 4, column: 40, scope: !26) |
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!26 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 2) |
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!27 = distinct !DILexicalBlock(scope: !20, file: !1, line: 4, column: 40) |
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!28 = !DILocation(line: 4, column: 47, scope: !27) |
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!29 = !DILocation(line: 4, column: 40, scope: !20) |
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!30 = !DILocation(line: 4, column: 55, scope: !31) |
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!31 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 3) |
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!32 = !DILocation(line: 4, column: 71, scope: !33) |
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!33 = !DILexicalBlockFile(scope: !27, file: !1, discriminator: 4) |
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!34 = !DILocation(line: 5, column: 1, scope: !4) |
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!35 = !DILocalVariable(name: "sum", scope: !9, file: !1, line: 8, type: !7) |
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!36 = !DILocation(line: 8, column: 17, scope: !9) |
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!37 = !DILocalVariable(name: "k", scope: !38, file: !1, line: 9, type: !12) |
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!38 = distinct !DILexicalBlock(scope: !9, file: !1, line: 9, column: 3) |
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!39 = !DILocation(line: 9, column: 12, scope: !38) |
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!40 = !DILocation(line: 9, column: 8, scope: !38) |
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!41 = !DILocation(line: 9, column: 19, scope: !42) |
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!42 = !DILexicalBlockFile(scope: !43, file: !1, discriminator: 2) |
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!43 = !DILexicalBlockFile(scope: !44, file: !1, discriminator: 1) |
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!44 = distinct !DILexicalBlock(scope: !38, file: !1, line: 9, column: 3) |
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!45 = !DILocation(line: 9, column: 21, scope: !44) |
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!46 = !DILocation(line: 9, column: 3, scope: !38) |
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!47 = !DILocalVariable(name: "i", scope: !48, file: !1, line: 10, type: !12) |
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!48 = distinct !DILexicalBlock(scope: !44, file: !1, line: 10, column: 5) |
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!49 = !DILocation(line: 10, column: 14, scope: !48) |
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!50 = !DILocation(line: 10, column: 10, scope: !48) |
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!51 = !DILocation(line: 10, column: 21, scope: !52) |
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!52 = !DILexicalBlockFile(scope: !53, file: !1, discriminator: 5) |
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!53 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 1) |
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!54 = distinct !DILexicalBlock(scope: !48, file: !1, line: 10, column: 5) |
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!55 = !DILocation(line: 10, column: 23, scope: !54) |
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!56 = !DILocation(line: 10, column: 5, scope: !48) |
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!57 = !DILocation(line: 10, column: 49, scope: !58) |
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!58 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 2) |
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!59 = !DILocation(line: 10, column: 45, scope: !54) |
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!60 = !DILocation(line: 10, column: 42, scope: !54) |
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!61 = !DILocation(line: 10, column: 38, scope: !54) |
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!62 = !DILocation(line: 10, column: 34, scope: !63) |
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!63 = !DILexicalBlockFile(scope: !54, file: !1, discriminator: 4) |
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!64 = !DILocation(line: 10, column: 5, scope: !54) |
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!65 = !DILocation(line: 10, column: 50, scope: !66) |
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!66 = !DILexicalBlockFile(scope: !48, file: !1, discriminator: 3) |
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!67 = !DILocation(line: 9, column: 30, scope: !44) |
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!68 = !DILocation(line: 9, column: 3, scope: !44) |
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!69 = !DILocation(line: 11, column: 10, scope: !9) |
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!70 = !DILocation(line: 11, column: 14, scope: !9) |
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!71 = !DILocation(line: 11, column: 3, scope: !9) |