; LLVM IR from TrainingByPackt/CPP-Data-Structures-and-Algorithm-Design-Principles :: Lesson4/Exercise18/binary_search.ll (Z13binary_searchiRSt6vectorIiSaIiEE)

; 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.__gnu_cxx::__normal_iterator" = type { ptr }

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

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

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z13binary_searchiRSt6vectorIiSaIiEE(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #2 {
  %3 = alloca i1, align 1
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca i64, align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca double, align 8
  %12 = alloca i32, align 4
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %14 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %15 = load ptr, ptr %5, align 8, !tbaa !9
  %16 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #6
  %17 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %16, ptr %17, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %18) #6
  %20 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %19, ptr %20, align 8
  br label %21

21:                                               ; preds = %62, %2
  br label %22

22:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %9, ptr align 8 %6, i64 8, i1 false), !tbaa.struct !11
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %10, ptr align 8 %7, i64 8, i1 false), !tbaa.struct !11
  %23 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8
  %25 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  %26 = load ptr, ptr %25, align 8
  %27 = call noundef i64 @_ZSt8distanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEENSt15iterator_traitsIT_E15difference_typeES8_S8_(ptr %24, ptr %26)
  store i64 %27, ptr %8, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  %28 = load i64, ptr %8, align 8, !tbaa !12
  %29 = sdiv i64 %28, 2
  %30 = call noundef double @_ZSt5floorIlEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %29)
  store double %30, ptr %11, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  %31 = load double, ptr %11, align 8, !tbaa !14
  %32 = fptosi double %31 to i64
  %33 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %6, i64 noundef %32) #6
  %34 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %33, ptr %34, align 8
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %13) #6
  %36 = load i32, ptr %35, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  store i32 %36, ptr %12, align 4, !tbaa !5
  %37 = load i32, ptr %12, align 4, !tbaa !5
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = icmp eq i32 %37, %38
  br i1 %39, label %40, label %41

40:                                               ; preds = %22
  store i1 true, ptr %3, align 1
  store i32 1, ptr %14, align 4
  br label %60

41:                                               ; preds = %22
  %42 = load i32, ptr %12, align 4, !tbaa !5
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = icmp sgt i32 %42, %43
  br i1 %44, label %45, label %48

45:                                               ; preds = %41
  %46 = load double, ptr %11, align 8, !tbaa !14
  %47 = fneg double %46
  call void @_ZSt7advanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEdEvRT_T0_(ptr noundef nonnull align 8 dereferenceable(8) %7, double noundef %47)
  br label %48

48:                                               ; preds = %45, %41
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %12, align 4, !tbaa !5
  %51 = load i32, ptr %4, align 4, !tbaa !5
  %52 = icmp slt i32 %50, %51
  br i1 %52, label %53, label %55

53:                                               ; preds = %49
  %54 = load double, ptr %11, align 8, !tbaa !14
  call void @_ZSt7advanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEdEvRT_T0_(ptr noundef nonnull align 8 dereferenceable(8) %6, double noundef %54)
  br label %55

55:                                               ; preds = %53, %49
  %56 = load i64, ptr %8, align 8, !tbaa !12
  %57 = icmp eq i64 %56, 1
  br i1 %57, label %58, label %59

58:                                               ; preds = %55
  store i1 false, ptr %3, align 1
  store i32 1, ptr %14, align 4
  br label %60

59:                                               ; preds = %55
  store i32 0, ptr %14, align 4
  br label %60

60:                                               ; preds = %59, %58, %40
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  %61 = load i32, ptr %14, align 4
  switch i32 %61, label %63 [
    i32 0, label %62
  ]

62:                                               ; preds = %60
  br label %21, !llvm.loop !16

63:                                               ; preds = %60
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  %64 = load i1, ptr %3, align 1
  ret i1 %64
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZSt8distanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEENSt15iterator_traitsIT_E15difference_typeES8_S8_(ptr, ptr) #3

; 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) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt5floorIlEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt7advanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEdEvRT_T0_(ptr noundef nonnull align 8 dereferenceable(8), double noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { 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 #6 = { 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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{i64 0, i64 8, !9}
!12 = !{!13, !13, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = !{!15, !15, i64 0}
!15 = !{!"double", !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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.__gnu_cxx::__normal_iterator" = type { ptr }

; 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 nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; 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 uwtable
define dso_local noundef zeroext i1 @_Z13binary_searchiRSt6vectorIiSaIiEE(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #2 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #5
  %6 = tail call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #5
  store ptr %6, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  %7 = tail call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #5
  store ptr %7, ptr %4, align 8
  br label %8

8:                                                ; preds = %24, %2
  %.sroa.06.0.copyload = load ptr, ptr %3, align 8, !tbaa !5
  %.sroa.0.0.copyload = load ptr, ptr %4, align 8, !tbaa !5
  %9 = call noundef i64 @_ZSt8distanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEENSt15iterator_traitsIT_E15difference_typeES8_S8_(ptr %.sroa.06.0.copyload, ptr %.sroa.0.0.copyload)
  %10 = sdiv i64 %9, 2
  %11 = call noundef double @_ZSt5floorIlEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %10)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #5
  %12 = fptosi double %11 to i64
  %13 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %3, i64 noundef %12) #5
  store ptr %13, ptr %5, align 8
  %14 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #5
  %15 = load i32, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  %16 = icmp eq i32 %15, %0
  br i1 %16, label %.thread, label %17

17:                                               ; preds = %8
  %18 = icmp sgt i32 %15, %0
  br i1 %18, label %19, label %21

19:                                               ; preds = %17
  %20 = fneg double %11
  call void @_ZSt7advanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEdEvRT_T0_(ptr noundef nonnull align 8 dereferenceable(8) %4, double noundef %20)
  br label %21

21:                                               ; preds = %17, %19
  %22 = icmp slt i32 %15, %0
  br i1 %22, label %23, label %24

23:                                               ; preds = %21
  call void @_ZSt7advanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEdEvRT_T0_(ptr noundef nonnull align 8 dereferenceable(8) %3, double noundef %11)
  br label %24

24:                                               ; preds = %21, %23
  %.not = icmp eq i64 %9, 1
  br i1 %.not, label %.thread, label %8, !llvm.loop !11

.thread:                                          ; preds = %8, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  ret i1 %16
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZSt8distanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEENSt15iterator_traitsIT_E15difference_typeES8_S8_(ptr, ptr) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt5floorIlEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt7advanceIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEEdEvRT_T0_(ptr noundef nonnull align 8 dereferenceable(8), double noundef) local_unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { 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 = { 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 #5 = { 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 = !{!"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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass