; LLVM IR from HarshCasper/NeoAlgo :: C-Plus-Plus/cp/search_insert_position.ll (Z22search_insert_positionPiii)

; 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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z22search_insert_positionPiii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %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 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = sub nsw i32 %12, 1
  store i32 %13, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  br label %14

14:                                               ; preds = %49, %3
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = load i32, ptr %9, align 4, !tbaa !9
  %17 = icmp sle i32 %15, %16
  br i1 %17, label %18, label %50

18:                                               ; preds = %14
  %19 = load i32, ptr %8, align 4, !tbaa !9
  %20 = load i32, ptr %9, align 4, !tbaa !9
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = sub nsw i32 %20, %21
  %23 = sdiv i32 %22, 2
  %24 = add nsw i32 %19, %23
  store i32 %24, ptr %10, align 4, !tbaa !9
  %25 = load i32, ptr %7, align 4, !tbaa !9
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load i32, ptr %10, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i32, ptr %26, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = icmp sgt i32 %25, %30
  br i1 %31, label %32, label %35

32:                                               ; preds = %18
  %33 = load i32, ptr %10, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %8, align 4, !tbaa !9
  br label %49

35:                                               ; preds = %18
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load i32, ptr %10, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds i32, ptr %37, i64 %39
  %41 = load i32, ptr %40, align 4, !tbaa !9
  %42 = icmp slt i32 %36, %41
  br i1 %42, label %43, label %46

43:                                               ; preds = %35
  %44 = load i32, ptr %10, align 4, !tbaa !9
  %45 = sub nsw i32 %44, 1
  store i32 %45, ptr %9, align 4, !tbaa !9
  br label %48

46:                                               ; preds = %35
  %47 = load i32, ptr %10, align 4, !tbaa !9
  store i32 %47, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %52

48:                                               ; preds = %43
  br label %49

49:                                               ; preds = %48, %32
  br label %14, !llvm.loop !11

50:                                               ; preds = %14
  %51 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %51, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %52

52:                                               ; preds = %50, %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %53 = load i32, ptr %4, align 4
  ret i32 %53
}

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

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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"}


; 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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef i32 @_Z22search_insert_positionPiii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %.not21 = icmp slt i32 %1, 1
  br i1 %.not21, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %4 = add nsw i32 %1, -1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %18
  %.01623 = phi i32 [ %.1, %18 ], [ %4, %.lr.ph.preheader ]
  %.01722 = phi i32 [ %.118, %18 ], [ 0, %.lr.ph.preheader ]
  %5 = sub nsw i32 %.01623, %.01722
  %6 = sdiv i32 %5, 2
  %7 = add nsw i32 %6, %.01722
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds i32, ptr %0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = icmp slt i32 %10, %2
  br i1 %11, label %12, label %14

12:                                               ; preds = %.lr.ph
  %13 = add nsw i32 %7, 1
  br label %18

14:                                               ; preds = %.lr.ph
  %15 = icmp sgt i32 %10, %2
  br i1 %15, label %16, label %._crit_edge

16:                                               ; preds = %14
  %17 = add nsw i32 %7, -1
  br label %18

18:                                               ; preds = %16, %12
  %.118 = phi i32 [ %13, %12 ], [ %.01722, %16 ]
  %.1 = phi i32 [ %.01623, %12 ], [ %17, %16 ]
  %.not = icmp sgt i32 %.118, %.1
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %14, %18, %3
  %.0 = phi i32 [ 0, %3 ], [ %.118, %18 ], [ %7, %14 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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" }

!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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass