; LLVM IR from TheAlgorithms/C-Plus-Plus :: sorting (random_pivot_quick_sort)

; 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_ostream" = type { ptr, %"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 }
%"struct.std::array" = type { [10 x i64] }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [21 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca %"struct.std::array", align 8
  %8 = alloca %"struct.std::array", align 8
  %9 = alloca %"struct.std::array", align 8
  %10 = alloca %"struct.std::array", align 8
  %11 = alloca %"struct.std::array", align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @_ZL4testv()
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #7
  store i64 10, ptr %6, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 80, ptr %7) #7
  call void @_ZN7sorting23random_pivot_quick_sort21generateUnsortedArrayILm10EEESt5arrayIlXT_EEll(ptr dead_on_unwind writable sret(%"struct.std::array") align 8 %7, i64 noundef 50, i64 noundef 1000)
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %12, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %8, ptr align 8 %7, i64 80, i1 false), !tbaa.struct !13
  call void @_ZN7sorting23random_pivot_quick_sort9showArrayILm10EEEvSt5arrayIlXT_EE(ptr noundef byval(%"struct.std::array") align 8 %8)
  call void @llvm.lifetime.start.p0(i64 80, ptr %9) #7
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %10, ptr align 8 %7, i64 80, i1 false), !tbaa.struct !13
  %14 = call noundef i64 @_ZNKSt5arrayIlLm10EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %7) #8
  %15 = sub i64 %14, 1
  call void @_ZN7sorting23random_pivot_quick_sort11quickSortRPILm10EEESt5arrayIlXT_EES3_ll(ptr dead_on_unwind writable sret(%"struct.std::array") align 8 %9, ptr noundef byval(%"struct.std::array") align 8 %10, i64 noundef 0, i64 noundef %15)
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
  %17 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %16, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %11, ptr align 8 %9, i64 80, i1 false), !tbaa.struct !13
  call void @_ZN7sorting23random_pivot_quick_sort9showArrayILm10EEEvSt5arrayIlXT_EE(ptr noundef byval(%"struct.std::array") align 8 %11)
  call void @llvm.lifetime.end.p0(i64 80, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #7
  ret i32 0
}

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL4testv() #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7sorting23random_pivot_quick_sort21generateUnsortedArrayILm10EEESt5arrayIlXT_EEll(ptr dead_on_unwind noalias writable sret(%"struct.std::array") align 8, i64 noundef, i64 noundef) #3

; 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) #4

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7sorting23random_pivot_quick_sort9showArrayILm10EEEvSt5arrayIlXT_EE(ptr noundef byval(%"struct.std::array") align 8) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #5

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7sorting23random_pivot_quick_sort11quickSortRPILm10EEESt5arrayIlXT_EES3_ll(ptr dead_on_unwind noalias writable sret(%"struct.std::array") align 8, ptr noundef byval(%"struct.std::array") align 8, i64 noundef, i64 noundef) #2

; Function Attrs: mustprogress nounwind willreturn memory(none) uwtable
declare dso_local noundef i64 @_ZNKSt5arrayIlLm10EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) #6 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 #4 = { 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 #5 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #6 = { mustprogress nounwind willreturn memory(none) 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 }
attributes #8 = { nounwind willreturn memory(none) }

!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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{i64 0, i64 80, !14}
!14 = !{!7, !7, i64 0}


; 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_ostream" = type { ptr, %"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 }
%"struct.std::array" = type { [10 x i64] }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [21 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #1 {
  %3 = alloca %"struct.std::array", align 8
  %4 = alloca %"struct.std::array", align 8
  tail call void @_ZL4testv()
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %3) #6
  call void @_ZN7sorting23random_pivot_quick_sort21generateUnsortedArrayILm10EEESt5arrayIlXT_EEll(ptr dead_on_unwind nonnull writable sret(%"struct.std::array") align 8 %3, i64 noundef 50, i64 noundef 1000)
  %5 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
  %6 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @_ZN7sorting23random_pivot_quick_sort9showArrayILm10EEEvSt5arrayIlXT_EE(ptr noundef nonnull byval(%"struct.std::array") align 8 %3)
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %4) #6
  %7 = call noundef i64 @_ZNKSt5arrayIlLm10EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3) #7
  %8 = add i64 %7, -1
  call void @_ZN7sorting23random_pivot_quick_sort11quickSortRPILm10EEESt5arrayIlXT_EES3_ll(ptr dead_on_unwind nonnull writable sret(%"struct.std::array") align 8 %4, ptr noundef nonnull byval(%"struct.std::array") align 8 %3, i64 noundef 0, i64 noundef %8)
  %9 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @_ZN7sorting23random_pivot_quick_sort9showArrayILm10EEEvSt5arrayIlXT_EE(ptr noundef nonnull byval(%"struct.std::array") align 8 %4)
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #6
  ret i32 0
}

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL4testv() local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7sorting23random_pivot_quick_sort21generateUnsortedArrayILm10EEESt5arrayIlXT_EEll(ptr dead_on_unwind noalias writable sret(%"struct.std::array") align 8, i64 noundef, i64 noundef) local_unnamed_addr #3

; 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 #4

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7sorting23random_pivot_quick_sort9showArrayILm10EEEvSt5arrayIlXT_EE(ptr noundef byval(%"struct.std::array") align 8) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7sorting23random_pivot_quick_sort11quickSortRPILm10EEESt5arrayIlXT_EES3_ll(ptr dead_on_unwind noalias writable sret(%"struct.std::array") align 8, ptr noundef byval(%"struct.std::array") align 8, i64 noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) uwtable
declare dso_local noundef i64 @_ZNKSt5arrayIlLm10EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #5 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 #4 = { 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 #5 = { mustprogress nofree nosync nounwind willreturn memory(none) 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 = { nounwind }
attributes #7 = { nounwind willreturn memory(none) }

!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)"}


; Effective O3 passes: DSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass