; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/QTREE/qtree.ll (Z4initiii)

; 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"

@base_array = external dso_local global [10001 x i32], align 16
@s_tree = external dso_local global [20002 x i32], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z4initiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = add nsw i32 %10, 1
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = icmp eq i32 %11, %12
  br i1 %13, label %14, label %22

14:                                               ; preds = %3
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [10001 x i32], ptr @base_array, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %20
  store i32 %18, ptr %21, align 4, !tbaa !5
  br label %61

22:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = shl i32 %23, 1
  store i32 %24, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %25 = load i32, ptr %7, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !5
  %29 = add nsw i32 %27, %28
  %30 = ashr i32 %29, 1
  store i32 %30, ptr %9, align 4, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !5
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = load i32, ptr %9, align 4, !tbaa !5
  call void @_Z4initiii(i32 noundef %31, i32 noundef %32, i32 noundef %33)
  %34 = load i32, ptr %8, align 4, !tbaa !5
  %35 = load i32, ptr %9, align 4, !tbaa !5
  %36 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z4initiii(i32 noundef %34, i32 noundef %35, i32 noundef %36)
  %37 = load i32, ptr %7, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = icmp sgt i32 %40, %44
  br i1 %45, label %46, label %51

46:                                               ; preds = %22
  %47 = load i32, ptr %7, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %48
  %50 = load i32, ptr %49, align 4, !tbaa !5
  br label %56

51:                                               ; preds = %22
  %52 = load i32, ptr %8, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %53
  %55 = load i32, ptr %54, align 4, !tbaa !5
  br label %56

56:                                               ; preds = %51, %46
  %57 = phi i32 [ %50, %46 ], [ %55, %51 ]
  %58 = load i32, ptr %4, align 4, !tbaa !5
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %59
  store i32 %57, ptr %60, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %61

61:                                               ; preds = %56, %14
  ret void
}

; 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 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 = !{!"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"

@base_array = external dso_local local_unnamed_addr global [10001 x i32], align 16
@s_tree = external dso_local local_unnamed_addr global [20002 x i32], align 16

; Function Attrs: mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z4initiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = add nsw i32 %1, 1
  %5 = icmp eq i32 %4, %2
  br i1 %5, label %6, label %12

6:                                                ; preds = %3
  %7 = sext i32 %1 to i64
  %8 = getelementptr inbounds [10001 x i32], ptr @base_array, i64 0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  br label %common.ret

common.ret:                                       ; preds = %6, %12
  %.sink = phi i32 [ %9, %6 ], [ %., %12 ]
  %10 = sext i32 %0 to i64
  %11 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %10
  store i32 %.sink, ptr %11, align 4, !tbaa !5
  ret void

12:                                               ; preds = %3
  %13 = shl i32 %0, 1
  %14 = or disjoint i32 %13, 1
  %15 = add nsw i32 %2, %1
  %16 = ashr i32 %15, 1
  tail call void @_Z4initiii(i32 noundef %13, i32 noundef %1, i32 noundef %16)
  tail call void @_Z4initiii(i32 noundef %14, i32 noundef %16, i32 noundef %2)
  %17 = sext i32 %13 to i64
  %18 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %17
  %19 = load i32, ptr %18, align 8, !tbaa !5
  %20 = sext i32 %14 to i64
  %21 = getelementptr inbounds [20002 x i32], ptr @s_tree, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %. = tail call i32 @llvm.smax.i32(i32 %19, i32 %22)
  br label %common.ret
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #1

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: 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 #1 = { nocallback nofree nosync nounwind speculatable 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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass