; LLVM IR from ShahjalalShohag/code-library :: Math (Gaussian Elimination)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::_Setprecision" = type { i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5GaussSt6vectorIS_IdSaIdEESaIS1_EERS1_(ptr noundef, ptr noundef nonnull align 8 dereferenceable(24)) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IdSaIdEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::vector", align 8
  %5 = alloca %"class.std::allocator", align 1
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca double, align 8
  %12 = alloca %"class.std::vector.0", align 8
  %13 = alloca i32, align 4
  %14 = alloca %"class.std::vector", align 8
  %15 = alloca i32, align 4
  %16 = alloca %"struct.std::_Setprecision", align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %17, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #7
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #7
  call void @_ZNSaISt6vectorIdSaIdEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #7
  invoke void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %20, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %21 unwind label %27

21:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorISt6vectorIdSaIdEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %52, %21
  %23 = load i32, ptr %8, align 4, !tbaa !5
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %31, label %26

26:                                               ; preds = %22
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  br label %55

27:                                               ; preds = %0
  %28 = landingpad { ptr, i32 }
          cleanup
  %29 = extractvalue { ptr, i32 } %28, 0
  store ptr %29, ptr %6, align 8
  %30 = extractvalue { ptr, i32 } %28, 1
  store i32 %30, ptr %7, align 4
  call void @_ZNSt15__new_allocatorISt6vectorIdSaIdEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #7
  br label %108

31:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %32

32:                                               ; preds = %44, %31
  %33 = load i32, ptr %10, align 4, !tbaa !5
  %34 = load i32, ptr %3, align 4, !tbaa !5
  %35 = icmp sle i32 %33, %34
  br i1 %35, label %37, label %36

36:                                               ; preds = %32
  store i32 5, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %51

37:                                               ; preds = %32
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #7
  %38 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %11)
          to label %39 unwind label %47

39:                                               ; preds = %37
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IdSaIdEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %41) #7
  invoke void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24) %42, ptr noundef nonnull align 8 dereferenceable(8) %11)
          to label %43 unwind label %47

43:                                               ; preds = %39
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #7
  br label %44

44:                                               ; preds = %43
  %45 = load i32, ptr %10, align 4, !tbaa !5
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %10, align 4, !tbaa !5
  br label %32, !llvm.loop !9

47:                                               ; preds = %39, %37
  %48 = landingpad { ptr, i32 }
          cleanup
  %49 = extractvalue { ptr, i32 } %48, 0
  store ptr %49, ptr %6, align 8
  %50 = extractvalue { ptr, i32 } %48, 1
  store i32 %50, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  br label %107

51:                                               ; preds = %36
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %8, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %8, align 4, !tbaa !5
  br label %22, !llvm.loop !11

55:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 24, ptr %12) #7
  call void @_ZNSt6vectorIdSaIdEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #7
  invoke void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %14, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %56 unwind label %67

56:                                               ; preds = %55
  %57 = invoke noundef i32 @_Z5GaussSt6vectorIS_IdSaIdEESaIS1_EERS1_(ptr noundef %14, ptr noundef nonnull align 8 dereferenceable(24) %12)
          to label %58 unwind label %71

58:                                               ; preds = %56
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %14) #7
  store i32 %57, ptr %13, align 4, !tbaa !5
  %59 = load i32, ptr %13, align 4, !tbaa !5
  %60 = icmp ne i32 %59, 0
  br i1 %60, label %61, label %101

61:                                               ; preds = %58
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #7
  store i32 0, ptr %15, align 4, !tbaa !5
  br label %62

62:                                               ; preds = %93, %61
  %63 = load i32, ptr %15, align 4, !tbaa !5
  %64 = load i32, ptr %2, align 4, !tbaa !5
  %65 = icmp slt i32 %63, %64
  br i1 %65, label %75, label %66

66:                                               ; preds = %62
  store i32 8, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  br label %100

67:                                               ; preds = %101, %55
  %68 = landingpad { ptr, i32 }
          cleanup
  %69 = extractvalue { ptr, i32 } %68, 0
  store ptr %69, ptr %6, align 8
  %70 = extractvalue { ptr, i32 } %68, 1
  store i32 %70, ptr %7, align 4
  br label %106

71:                                               ; preds = %56
  %72 = landingpad { ptr, i32 }
          cleanup
  %73 = extractvalue { ptr, i32 } %72, 0
  store ptr %73, ptr %6, align 8
  %74 = extractvalue { ptr, i32 } %72, 1
  store i32 %74, ptr %7, align 4
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %14) #7
  br label %106

75:                                               ; preds = %62
  %76 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSt8ios_baseS0_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt5fixedRSt8ios_base)
          to label %77 unwind label %96

77:                                               ; preds = %75
  %78 = invoke i32 @_ZSt12setprecisioni(i32 noundef 5)
          to label %79 unwind label %96

79:                                               ; preds = %77
  %80 = getelementptr inbounds %"struct.std::_Setprecision", ptr %16, i32 0, i32 0
  store i32 %78, ptr %80, align 4
  %81 = getelementptr inbounds %"struct.std::_Setprecision", ptr %16, i32 0, i32 0
  %82 = load i32, ptr %81, align 4
  %83 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St13_Setprecision(ptr noundef nonnull align 8 dereferenceable(8) %76, i32 %82)
          to label %84 unwind label %96

84:                                               ; preds = %79
  %85 = load i32, ptr %15, align 4, !tbaa !5
  %86 = sext i32 %85 to i64
  %87 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %86) #7
  %88 = load double, ptr %87, align 8, !tbaa !12
  %89 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEd(ptr noundef nonnull align 8 dereferenceable(8) %83, double noundef %88)
          to label %90 unwind label %96

90:                                               ; preds = %84
  %91 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %89, i8 noundef signext 32)
          to label %92 unwind label %96

92:                                               ; preds = %90
  br label %93

93:                                               ; preds = %92
  %94 = load i32, ptr %15, align 4, !tbaa !5
  %95 = add nsw i32 %94, 1
  store i32 %95, ptr %15, align 4, !tbaa !5
  br label %62, !llvm.loop !14

96:                                               ; preds = %90, %84, %79, %77, %75
  %97 = landingpad { ptr, i32 }
          cleanup
  %98 = extractvalue { ptr, i32 } %97, 0
  store ptr %98, ptr %6, align 8
  %99 = extractvalue { ptr, i32 } %97, 1
  store i32 %99, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  br label %106

100:                                              ; preds = %66
  br label %104

101:                                              ; preds = %58
  %102 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
          to label %103 unwind label %67

103:                                              ; preds = %101
  br label %104

104:                                              ; preds = %103, %100
  store i32 0, ptr %1, align 4
  store i32 1, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @_ZNSt6vectorIdSaIdEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #7
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  %105 = load i32, ptr %1, align 4
  ret i32 %105

106:                                              ; preds = %96, %71, %67
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @_ZNSt6vectorIdSaIdEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #7
  br label %107

107:                                              ; preds = %106, %47
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #7
  br label %108

108:                                              ; preds = %107, %27
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %109

109:                                              ; preds = %108
  %110 = load ptr, ptr %6, align 8
  %111 = load i32, ptr %7, align 4
  %112 = insertvalue { ptr, i32 } poison, ptr %110, 0
  %113 = insertvalue { ptr, i32 } %112, i32 %111, 1
  resume { ptr, i32 } %113
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt6vectorIdSaIdEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #5

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St13_Setprecision(ptr noundef nonnull align 8 dereferenceable(8), i32) #5

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSt8ios_baseS0_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(216) ptr @_ZSt5fixedRSt8ios_base(ptr noundef nonnull align 8 dereferenceable(216)) #5

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local i32 @_ZSt12setprecisioni(i32 noundef) #6

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEd(ptr noundef nonnull align 8 dereferenceable(8), double noundef) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt6vectorIdSaIdEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = !{!13, !13, i64 0}
!13 = !{!"double", !7, i64 0}
!14 = distinct !{!14, !10}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<double>, std::allocator<std::vector<double>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5GaussSt6vectorIS_IdSaIdEESaIS1_EERS1_(ptr noundef, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IdSaIdEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca double, align 8
  %6 = alloca %"class.std::vector.0", align 8
  %7 = alloca %"class.std::vector", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #7
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #7
  call void @_ZNSaISt6vectorIdSaIdEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #7
  invoke void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %11, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %12 unwind label %19

12:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorISt6vectorIdSaIdEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #7
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = icmp slt i32 %13, 1
  %15 = load i32, ptr %2, align 4
  %16 = icmp slt i32 %15, 0
  %or.cond = select i1 %14, i1 true, i1 %16
  br i1 %or.cond, label %._crit_edge26, label %.preheader22

.preheader22:                                     ; preds = %12, %._crit_edge
  %17 = phi i32 [ %21, %._crit_edge ], [ %13, %12 ]
  %18 = phi i32 [ %22, %._crit_edge ], [ %15, %12 ]
  %indvars.iv = phi i64 [ %indvars.iv.next, %._crit_edge ], [ 0, %12 ]
  %.not1823 = icmp slt i32 %18, 0
  br i1 %.not1823, label %._crit_edge, label %.lr.ph

._crit_edge26:                                    ; preds = %._crit_edge, %12
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %6) #7
  call void @_ZNSt6vectorIdSaIdEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #7
  invoke void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 8 dereferenceable(24) %3)
          to label %33 unwind label %38

19:                                               ; preds = %0
  %20 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt6vectorIdSaIdEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #7
  br label %62

._crit_edge.loopexit:                             ; preds = %28
  %.pre = load i32, ptr %1, align 4, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader22
  %21 = phi i32 [ %.pre, %._crit_edge.loopexit ], [ %17, %.preheader22 ]
  %22 = phi i32 [ %30, %._crit_edge.loopexit ], [ %18, %.preheader22 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %23 = sext i32 %21 to i64
  %24 = icmp slt i64 %indvars.iv.next, %23
  br i1 %24, label %.preheader22, label %._crit_edge26, !llvm.loop !9

.lr.ph:                                           ; preds = %.preheader22, %28
  %.01224 = phi i32 [ %29, %28 ], [ 0, %.preheader22 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #7
  %25 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %5)
          to label %26 unwind label %31

26:                                               ; preds = %.lr.ph
  %27 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IdSaIdEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #7
  invoke void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24) %27, ptr noundef nonnull align 8 dereferenceable(8) %5)
          to label %28 unwind label %31

28:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #7
  %29 = add nuw nsw i32 %.01224, 1
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %.not18.not = icmp slt i32 %.01224, %30
  br i1 %.not18.not, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !12

31:                                               ; preds = %26, %.lr.ph
  %32 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #7
  br label %61

33:                                               ; preds = %._crit_edge26
  %34 = invoke noundef i32 @_Z5GaussSt6vectorIS_IdSaIdEESaIS1_EERS1_(ptr noundef nonnull %7, ptr noundef nonnull align 8 dereferenceable(24) %6)
          to label %35 unwind label %40

35:                                               ; preds = %33
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #7
  %.not = icmp eq i32 %34, 0
  br i1 %.not, label %58, label %.preheader

.preheader:                                       ; preds = %35
  %36 = load i32, ptr %1, align 4, !tbaa !5
  %37 = icmp sgt i32 %36, 0
  br i1 %37, label %.lr.ph28, label %.loopexit

38:                                               ; preds = %58, %._crit_edge26
  %39 = landingpad { ptr, i32 }
          cleanup
  br label %60

40:                                               ; preds = %33
  %41 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #7
  br label %60

.lr.ph28:                                         ; preds = %.preheader, %52
  %indvars.iv31 = phi i64 [ %indvars.iv.next32, %52 ], [ 0, %.preheader ]
  %42 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSt8ios_baseS0_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt5fixedRSt8ios_base)
          to label %43 unwind label %56

43:                                               ; preds = %.lr.ph28
  %44 = call i32 @_ZSt12setprecisioni(i32 noundef 5)
  %45 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St13_Setprecision(ptr noundef nonnull align 8 dereferenceable(8) %42, i32 %44)
          to label %46 unwind label %56

46:                                               ; preds = %43
  %47 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %indvars.iv31) #7
  %48 = load double, ptr %47, align 8, !tbaa !13
  %49 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEd(ptr noundef nonnull align 8 dereferenceable(8) %45, double noundef %48)
          to label %50 unwind label %56

50:                                               ; preds = %46
  %51 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %49, i8 noundef signext 32)
          to label %52 unwind label %56

52:                                               ; preds = %50
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, 1
  %53 = load i32, ptr %1, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = icmp slt i64 %indvars.iv.next32, %54
  br i1 %55, label %.lr.ph28, label %.loopexit, !llvm.loop !15

56:                                               ; preds = %50, %46, %43, %.lr.ph28
  %57 = landingpad { ptr, i32 }
          cleanup
  br label %60

58:                                               ; preds = %35
  %59 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
          to label %.loopexit unwind label %38

.loopexit:                                        ; preds = %52, %.preheader, %58
  call void @_ZNSt6vectorIdSaIdEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #7
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0

60:                                               ; preds = %56, %40, %38
  %.pn = phi { ptr, i32 } [ %57, %56 ], [ %39, %38 ], [ %41, %40 ]
  call void @_ZNSt6vectorIdSaIdEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #7
  br label %61

61:                                               ; preds = %60, %31
  %.pn19 = phi { ptr, i32 } [ %32, %31 ], [ %.pn, %60 ]
  call void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  br label %62

62:                                               ; preds = %61, %19
  %.pn19.pn = phi { ptr, i32 } [ %.pn19, %61 ], [ %20, %19 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn19.pn
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt6vectorIdSaIdEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IdSaIdEESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IdSaIdEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #5

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St13_Setprecision(ptr noundef nonnull align 8 dereferenceable(8), i32) local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSt8ios_baseS0_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(216) ptr @_ZSt5fixedRSt8ios_base(ptr noundef nonnull align 8 dereferenceable(216)) #5

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local i32 @_ZSt12setprecisioni(i32 noundef) local_unnamed_addr #6

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEd(ptr noundef nonnull align 8 dereferenceable(8), double noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt6vectorIdSaIdEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.unswitch.partial.disable"}
!12 = distinct !{!12, !10}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !7, i64 0}
!15 = distinct !{!15, !10}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimpleLoopUnswitchPass,SimplifyCFGPass