; LLVM IR from zumrudu-anka/Algorithms :: C++/Searching Algorithms/Binary Search/BinarySearch.ll (Z12BinarySearchPiii)

; 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 }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [22 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_Z12BinarySearchPiii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %12 = call noalias noundef nonnull ptr @_Znam(i64 noundef 8) #5
  store ptr %12, ptr %8, align 8, !tbaa !5
  %13 = load ptr, ptr %8, align 8, !tbaa !5
  %14 = getelementptr inbounds i32, ptr %13, i64 0
  store i32 0, ptr %14, align 4, !tbaa !9
  %15 = load ptr, ptr %8, align 8, !tbaa !5
  %16 = getelementptr inbounds i32, ptr %15, i64 1
  store i32 -1, ptr %16, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  store i32 0, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  %17 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %17, ptr %10, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %73, %3
  %19 = load i32, ptr %10, align 4, !tbaa !9
  %20 = load i32, ptr %9, align 4, !tbaa !9
  %21 = sub nsw i32 %19, %20
  %22 = icmp sgt i32 %21, 0
  br i1 %22, label %23, label %74

23:                                               ; preds = %18
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i32, ptr %10, align 4, !tbaa !9
  %26 = load i32, ptr %9, align 4, !tbaa !9
  %27 = add nsw i32 %25, %26
  %28 = sdiv i32 %27, 2
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %24, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = load i32, ptr %7, align 4, !tbaa !9
  %33 = icmp eq i32 %31, %32
  br i1 %33, label %34, label %44

34:                                               ; preds = %23
  %35 = load ptr, ptr %8, align 8, !tbaa !5
  %36 = getelementptr inbounds i32, ptr %35, i64 0
  store i32 1, ptr %36, align 4, !tbaa !9
  %37 = load i32, ptr %10, align 4, !tbaa !9
  %38 = load i32, ptr %9, align 4, !tbaa !9
  %39 = add nsw i32 %37, %38
  %40 = sdiv i32 %39, 2
  %41 = load ptr, ptr %8, align 8, !tbaa !5
  %42 = getelementptr inbounds i32, ptr %41, i64 1
  store i32 %40, ptr %42, align 4, !tbaa !9
  %43 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %43, ptr %4, align 8
  store i32 1, ptr %11, align 4
  br label %76

44:                                               ; preds = %23
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = load i32, ptr %9, align 4, !tbaa !9
  %48 = add nsw i32 %46, %47
  %49 = sdiv i32 %48, 2
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds i32, ptr %45, i64 %50
  %52 = load i32, ptr %51, align 4, !tbaa !9
  %53 = load i32, ptr %7, align 4, !tbaa !9
  %54 = icmp slt i32 %52, %53
  br i1 %54, label %55, label %64

55:                                               ; preds = %44
  %56 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %57 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %56, ptr noundef @.str)
  %58 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %57, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %59 = load i32, ptr %10, align 4, !tbaa !9
  %60 = load i32, ptr %9, align 4, !tbaa !9
  %61 = add nsw i32 %59, %60
  %62 = sdiv i32 %61, 2
  %63 = add nsw i32 %62, 1
  store i32 %63, ptr %9, align 4, !tbaa !9
  br label %72

64:                                               ; preds = %44
  %65 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %66 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %65, ptr noundef @.str.1)
  %67 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %66, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %68 = load i32, ptr %10, align 4, !tbaa !9
  %69 = load i32, ptr %9, align 4, !tbaa !9
  %70 = add nsw i32 %68, %69
  %71 = sdiv i32 %70, 2
  store i32 %71, ptr %10, align 4, !tbaa !9
  br label %72

72:                                               ; preds = %64, %55
  br label %73

73:                                               ; preds = %72
  br label %18, !llvm.loop !11

74:                                               ; preds = %18
  %75 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %75, ptr %4, align 8
  store i32 1, ptr %11, align 4
  br label %76

76:                                               ; preds = %74, %34
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %77 = load ptr, ptr %4, align 8
  ret ptr %77
}

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

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #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) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0 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)) #3

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

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 = { nobuiltin allocsize(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 = { 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 #4 = { nounwind }
attributes #5 = { builtin allocsize(0) }

!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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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 }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [22 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local noalias noundef nonnull ptr @_Z12BinarySearchPiii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = tail call noalias noundef nonnull dereferenceable(8) ptr @_Znam(i64 noundef 8) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %4, i64 4
  store i32 -1, ptr %5, align 4, !tbaa !5
  %6 = icmp sgt i32 %1, 0
  br i1 %6, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %3, %24
  %.029 = phi i32 [ %.1, %24 ], [ %1, %3 ]
  %.02328 = phi i32 [ %.124, %24 ], [ 0, %3 ]
  %7 = add nsw i32 %.029, %.02328
  %8 = sdiv i32 %7, 2
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds i32, ptr %0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = icmp eq i32 %11, %2
  br i1 %12, label %13, label %14

13:                                               ; preds = %.lr.ph
  store i32 1, ptr %4, align 4, !tbaa !5
  store i32 %8, ptr %5, align 4, !tbaa !5
  br label %.loopexit

14:                                               ; preds = %.lr.ph
  %15 = icmp slt i32 %11, %2
  %16 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br i1 %15, label %17, label %21

17:                                               ; preds = %14
  %18 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %16, ptr noundef nonnull @.str)
  %19 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %18, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %20 = add nsw i32 %8, 1
  br label %24

21:                                               ; preds = %14
  %22 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %16, ptr noundef nonnull @.str.1)
  %23 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %22, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %24

24:                                               ; preds = %17, %21
  %.124 = phi i32 [ %20, %17 ], [ %.02328, %21 ]
  %.1 = phi i32 [ %.029, %17 ], [ %8, %21 ]
  %25 = icmp sgt i32 %.1, %.124
  br i1 %25, label %.lr.ph, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %24, %3, %13
  ret ptr %4
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) local_unnamed_addr #1

; 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 #2

; 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 #0 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)) #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 = { nobuiltin allocsize(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 = { 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 #3 = { builtin allocsize(0) }

!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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass