; LLVM IR from PetarV-/Algorithms :: Data Structures/Segment Tree.ll (Z6Updateiiiii)

; 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"

@ST = external dso_local global [4000004 x i32], align 16

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6Updateiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #1 {
  %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
  store i32 %0, ptr %6, align 4, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !5
  store i32 %4, ptr %10, align 4, !tbaa !5
  %11 = load i32, ptr %9, align 4, !tbaa !5
  %12 = load i32, ptr %10, align 4, !tbaa !5
  %13 = icmp eq i32 %11, %12
  br i1 %13, label %14, label %19

14:                                               ; preds = %5
  %15 = load i32, ptr %8, align 4, !tbaa !5
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %17
  store i32 %15, ptr %18, align 4, !tbaa !5
  br label %63

19:                                               ; preds = %5
  %20 = load i32, ptr %7, align 4, !tbaa !5
  %21 = load i32, ptr %9, align 4, !tbaa !5
  %22 = load i32, ptr %10, align 4, !tbaa !5
  %23 = add nsw i32 %21, %22
  %24 = sdiv i32 %23, 2
  %25 = icmp sle i32 %20, %24
  br i1 %25, label %26, label %36

26:                                               ; preds = %19
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = mul nsw i32 2, %27
  %29 = load i32, ptr %7, align 4, !tbaa !5
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !5
  %32 = load i32, ptr %9, align 4, !tbaa !5
  %33 = load i32, ptr %10, align 4, !tbaa !5
  %34 = add nsw i32 %32, %33
  %35 = sdiv i32 %34, 2
  call void @_Z6Updateiiiii(i32 noundef %28, i32 noundef %29, i32 noundef %30, i32 noundef %31, i32 noundef %35)
  br label %48

36:                                               ; preds = %19
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = mul nsw i32 2, %37
  %39 = add nsw i32 %38, 1
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = load i32, ptr %9, align 4, !tbaa !5
  %43 = load i32, ptr %10, align 4, !tbaa !5
  %44 = add nsw i32 %42, %43
  %45 = sdiv i32 %44, 2
  %46 = add nsw i32 %45, 1
  %47 = load i32, ptr %10, align 4, !tbaa !5
  call void @_Z6Updateiiiii(i32 noundef %39, i32 noundef %40, i32 noundef %41, i32 noundef %46, i32 noundef %47)
  br label %48

48:                                               ; preds = %36, %26
  %49 = load i32, ptr %6, align 4, !tbaa !5
  %50 = mul nsw i32 2, %49
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %51
  %53 = load i32, ptr %6, align 4, !tbaa !5
  %54 = mul nsw i32 2, %53
  %55 = add nsw i32 %54, 1
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %56
  %58 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %52, ptr noundef nonnull align 4 dereferenceable(4) %57)
  %59 = load i32, ptr %58, align 4, !tbaa !5
  %60 = load i32, ptr %6, align 4, !tbaa !5
  %61 = sext i32 %60 to i64
  %62 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %61
  store i32 %59, ptr %62, align 4, !tbaa !5
  br label %63

63:                                               ; preds = %48, %14
  ret void
}

attributes #0 = { 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 #1 = { 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" }

!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"}


; 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"

@ST = external dso_local global [4000004 x i32], align 16

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6Updateiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #1 {
  %6 = icmp eq i32 %3, %4
  br i1 %6, label %22, label %7

7:                                                ; preds = %5
  %8 = add nsw i32 %4, %3
  %9 = sdiv i32 %8, 2
  %.not = icmp slt i32 %9, %1
  %10 = shl nsw i32 %0, 1
  br i1 %.not, label %12, label %11

11:                                               ; preds = %7
  tail call void @_Z6Updateiiiii(i32 noundef %10, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %9)
  %.pre = or disjoint i32 %10, 1
  br label %15

12:                                               ; preds = %7
  %13 = or disjoint i32 %10, 1
  %14 = add nsw i32 %9, 1
  tail call void @_Z6Updateiiiii(i32 noundef %13, i32 noundef %1, i32 noundef %2, i32 noundef %14, i32 noundef %4)
  br label %15

15:                                               ; preds = %12, %11
  %.pre-phi26 = phi i32 [ %13, %12 ], [ %.pre, %11 ]
  %16 = sext i32 %10 to i64
  %17 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %16
  %18 = sext i32 %.pre-phi26 to i64
  %19 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %18
  %20 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %17, ptr noundef nonnull align 4 dereferenceable(4) %19)
  %21 = load i32, ptr %20, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %5, %15
  %.sink = phi i32 [ %21, %15 ], [ %2, %5 ]
  %23 = sext i32 %0 to i64
  %24 = getelementptr inbounds [4000004 x i32], ptr @ST, i64 0, i64 %23
  store i32 %.sink, ptr %24, align 4, !tbaa !5
  ret void
}

attributes #0 = { 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 #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" }

!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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass