; LLVM IR from upupming/algorithm :: kick-start/2021/RoundB/D. Truck Delivery.ll (Z5buildiii)

; 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"

%struct.SegmentTree = type { i32, i32, i64 }

@tree = external dso_local global [800040 x %struct.SegmentTree], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z3gcdxx(i64 noundef, i64 noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiii(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
  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
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %10
  %12 = getelementptr inbounds %struct.SegmentTree, ptr %11, i32 0, i32 0
  store i32 %8, ptr %12, align 16, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !5
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %15
  %17 = getelementptr inbounds %struct.SegmentTree, ptr %16, i32 0, i32 1
  store i32 %13, ptr %17, align 4, !tbaa !12
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = icmp eq i32 %18, %19
  br i1 %20, label %21, label %26

21:                                               ; preds = %3
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %23
  %25 = getelementptr inbounds %struct.SegmentTree, ptr %24, i32 0, i32 2
  store i64 0, ptr %25, align 8, !tbaa !13
  br label %59

26:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #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 %7, align 4, !tbaa !5
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = mul nsw i32 2, %31
  %33 = load i32, ptr %5, align 4, !tbaa !5
  %34 = load i32, ptr %7, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %32, i32 noundef %33, i32 noundef %34)
  %35 = load i32, ptr %4, align 4, !tbaa !5
  %36 = mul nsw i32 2, %35
  %37 = add nsw i32 %36, 1
  %38 = load i32, ptr %7, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  %40 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef %37, i32 noundef %39, i32 noundef %40)
  %41 = load i32, ptr %4, align 4, !tbaa !5
  %42 = mul nsw i32 2, %41
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %43
  %45 = getelementptr inbounds %struct.SegmentTree, ptr %44, i32 0, i32 2
  %46 = load i64, ptr %45, align 8, !tbaa !13
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = mul nsw i32 2, %47
  %49 = add nsw i32 %48, 1
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %50
  %52 = getelementptr inbounds %struct.SegmentTree, ptr %51, i32 0, i32 2
  %53 = load i64, ptr %52, align 8, !tbaa !13
  %54 = call noundef i64 @_Z3gcdxx(i64 noundef %46, i64 noundef %53)
  %55 = load i32, ptr %4, align 4, !tbaa !5
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %56
  %58 = getelementptr inbounds %struct.SegmentTree, ptr %57, i32 0, i32 2
  store i64 %54, ptr %58, align 8, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %59

59:                                               ; preds = %26, %21
  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"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTS11SegmentTree", !6, i64 0, !6, i64 4, !11, i64 8}
!11 = !{!"long long", !7, i64 0}
!12 = !{!10, !6, i64 4}
!13 = !{!10, !11, i64 8}


; 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"

%struct.SegmentTree = type { i32, i32, i64 }

@tree = external dso_local local_unnamed_addr global [800040 x %struct.SegmentTree], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z3gcdxx(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5buildiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %4
  store i32 %1, ptr %5, align 16, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i64 4
  store i32 %2, ptr %6, align 4, !tbaa !11
  %7 = icmp eq i32 %1, %2
  br i1 %7, label %common.ret, label %9

common.ret:                                       ; preds = %3, %9
  %.sink = phi i64 [ %21, %9 ], [ 0, %3 ]
  %8 = getelementptr inbounds i8, ptr %5, i64 8
  store i64 %.sink, ptr %8, align 8
  ret void

9:                                                ; preds = %3
  %10 = add nsw i32 %2, %1
  %11 = ashr i32 %10, 1
  %12 = shl nsw i32 %0, 1
  tail call void @_Z5buildiii(i32 noundef %12, i32 noundef %1, i32 noundef %11)
  %13 = or disjoint i32 %12, 1
  %14 = add nsw i32 %11, 1
  tail call void @_Z5buildiii(i32 noundef %13, i32 noundef %14, i32 noundef %2)
  %15 = sext i32 %12 to i64
  %16 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %15, i32 2
  %17 = load i64, ptr %16, align 8, !tbaa !12
  %18 = sext i32 %13 to i64
  %19 = getelementptr inbounds [800040 x %struct.SegmentTree], ptr @tree, i64 0, i64 %18, i32 2
  %20 = load i64, ptr %19, align 8, !tbaa !12
  %21 = tail call noundef i64 @_Z3gcdxx(i64 noundef %17, i64 noundef %20)
  br label %common.ret
}

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" }

!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, !7, i64 0}
!6 = !{!"_ZTS11SegmentTree", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"long long", !8, i64 0}
!11 = !{!6, !7, i64 4}
!12 = !{!6, !10, i64 8}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,MergedLoadStoreMotionPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass