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Imported Upstream version 5.18.0.207
Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449
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; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/gcc-simple.afdo -S | FileCheck %s
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; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/gcc-simple.afdo -S | FileCheck %s
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; XFAIL: powerpc64-, s390x, mips-, mips64-, sparc
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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 !dbg !4 {
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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 !dbg !9 {
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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: NoDebug, enums: !2)
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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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!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)
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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, unit: !0, 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)
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