; LLVM IR from brpapa/algorithms :: solutions/uva/11402.ll (Z11range_queryiiiii)

; 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.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@bin_tree = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2lei(i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2rii(i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; 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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z14propagate_lazyiii(i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z11range_queryiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #2 {
  %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
  %12 = alloca i32, align 4
  store i32 %0, ptr %7, align 4, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !5
  store i32 %2, ptr %9, align 4, !tbaa !5
  store i32 %3, ptr %10, align 4, !tbaa !5
  store i32 %4, ptr %11, align 4, !tbaa !5
  %13 = load i32, ptr %7, align 4, !tbaa !5
  %14 = load i32, ptr %8, align 4, !tbaa !5
  %15 = load i32, ptr %9, align 4, !tbaa !5
  call void @_Z14propagate_lazyiii(i32 noundef %13, i32 noundef %14, i32 noundef %15)
  %16 = load i32, ptr %10, align 4, !tbaa !5
  %17 = load i32, ptr %9, align 4, !tbaa !5
  %18 = icmp sgt i32 %16, %17
  br i1 %18, label %23, label %19

19:                                               ; preds = %5
  %20 = load i32, ptr %11, align 4, !tbaa !5
  %21 = load i32, ptr %8, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %19, %5
  store i32 0, ptr %6, align 4
  br label %58

24:                                               ; preds = %19
  %25 = load i32, ptr %8, align 4, !tbaa !5
  %26 = load i32, ptr %10, align 4, !tbaa !5
  %27 = icmp sge i32 %25, %26
  br i1 %27, label %28, label %37

28:                                               ; preds = %24
  %29 = load i32, ptr %9, align 4, !tbaa !5
  %30 = load i32, ptr %11, align 4, !tbaa !5
  %31 = icmp sle i32 %29, %30
  br i1 %31, label %32, label %37

32:                                               ; preds = %28
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @bin_tree, i64 noundef %34) #3
  %36 = load i32, ptr %35, align 4, !tbaa !5
  store i32 %36, ptr %6, align 4
  br label %58

37:                                               ; preds = %28, %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %38 = load i32, ptr %8, align 4, !tbaa !5
  %39 = load i32, ptr %9, align 4, !tbaa !5
  %40 = add nsw i32 %38, %39
  %41 = sdiv i32 %40, 2
  store i32 %41, ptr %12, align 4, !tbaa !5
  %42 = load i32, ptr %7, align 4, !tbaa !5
  %43 = call noundef i32 @_Z2lei(i32 noundef %42)
  %44 = load i32, ptr %8, align 4, !tbaa !5
  %45 = load i32, ptr %12, align 4, !tbaa !5
  %46 = load i32, ptr %10, align 4, !tbaa !5
  %47 = load i32, ptr %11, align 4, !tbaa !5
  %48 = call noundef i32 @_Z11range_queryiiiii(i32 noundef %43, i32 noundef %44, i32 noundef %45, i32 noundef %46, i32 noundef %47)
  %49 = load i32, ptr %7, align 4, !tbaa !5
  %50 = call noundef i32 @_Z2rii(i32 noundef %49)
  %51 = load i32, ptr %12, align 4, !tbaa !5
  %52 = add nsw i32 %51, 1
  %53 = load i32, ptr %9, align 4, !tbaa !5
  %54 = load i32, ptr %10, align 4, !tbaa !5
  %55 = load i32, ptr %11, align 4, !tbaa !5
  %56 = call noundef i32 @_Z11range_queryiiiii(i32 noundef %50, i32 noundef %52, i32 noundef %53, i32 noundef %54, i32 noundef %55)
  %57 = add nsw i32 %48, %56
  store i32 %57, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %58

58:                                               ; preds = %37, %32, %23
  %59 = load i32, ptr %6, align 4
  ret i32 %59
}

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 = { 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 = { 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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@bin_tree = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2lei(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2rii(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z14propagate_lazyiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z11range_queryiiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  tail call void @_Z14propagate_lazyiii(i32 noundef %0, i32 noundef %1, i32 noundef %2)
  %6 = icmp sgt i32 %3, %2
  %7 = icmp slt i32 %4, %1
  %or.cond38 = or i1 %6, %7
  br i1 %or.cond38, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %5
  %.not29 = icmp sgt i32 %2, %4
  br i1 %.not29, label %tailrecurse.us, label %.lr.ph.split.split

tailrecurse.us:                                   ; preds = %.lr.ph, %tailrecurse.us
  %.tr3141.us = phi i32 [ %13, %tailrecurse.us ], [ %1, %.lr.ph ]
  %.tr40.us = phi i32 [ %12, %tailrecurse.us ], [ %0, %.lr.ph ]
  %accumulator.tr39.us = phi i32 [ %14, %tailrecurse.us ], [ 0, %.lr.ph ]
  %8 = add nsw i32 %.tr3141.us, %2
  %9 = sdiv i32 %8, 2
  %10 = tail call noundef i32 @_Z2lei(i32 noundef %.tr40.us)
  %11 = tail call noundef i32 @_Z11range_queryiiiii(i32 noundef %10, i32 noundef %.tr3141.us, i32 noundef %9, i32 noundef %3, i32 noundef %4)
  %12 = tail call noundef i32 @_Z2rii(i32 noundef %.tr40.us)
  %13 = add nsw i32 %9, 1
  %14 = add nsw i32 %11, %accumulator.tr39.us
  tail call void @_Z14propagate_lazyiii(i32 noundef %12, i32 noundef %13, i32 noundef %2)
  %.not53 = icmp slt i32 %9, %4
  br i1 %.not53, label %tailrecurse.us, label %.loopexit

.lr.ph.split.split:                               ; preds = %.lr.ph, %tailrecurse
  %.tr3141 = phi i32 [ %23, %tailrecurse ], [ %1, %.lr.ph ]
  %.tr40 = phi i32 [ %22, %tailrecurse ], [ %0, %.lr.ph ]
  %accumulator.tr39 = phi i32 [ %24, %tailrecurse ], [ 0, %.lr.ph ]
  %.not = icmp slt i32 %.tr3141, %3
  br i1 %.not, label %tailrecurse, label %.split.us

.split.us:                                        ; preds = %.lr.ph.split.split
  %15 = sext i32 %.tr40 to i64
  %16 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @bin_tree, i64 noundef %15) #1
  %17 = load i32, ptr %16, align 4, !tbaa !5
  br label %.loopexit

tailrecurse:                                      ; preds = %.lr.ph.split.split
  %18 = add nsw i32 %.tr3141, %2
  %19 = sdiv i32 %18, 2
  %20 = tail call noundef i32 @_Z2lei(i32 noundef %.tr40)
  %21 = tail call noundef i32 @_Z11range_queryiiiii(i32 noundef %20, i32 noundef %.tr3141, i32 noundef %19, i32 noundef %3, i32 noundef %4)
  %22 = tail call noundef i32 @_Z2rii(i32 noundef %.tr40)
  %23 = add nsw i32 %19, 1
  %24 = add nsw i32 %21, %accumulator.tr39
  tail call void @_Z14propagate_lazyiii(i32 noundef %22, i32 noundef %23, i32 noundef %2)
  %.not52 = icmp slt i32 %19, %4
  br i1 %.not52, label %.lr.ph.split.split, label %.loopexit

.loopexit:                                        ; preds = %tailrecurse, %tailrecurse.us, %5, %.split.us
  %accumulator.tr37 = phi i32 [ %accumulator.tr39, %.split.us ], [ 0, %5 ], [ %14, %tailrecurse.us ], [ %24, %tailrecurse ]
  %.0 = phi i32 [ %17, %.split.us ], [ 0, %5 ], [ 0, %tailrecurse.us ], [ 0, %tailrecurse ]
  %accumulator.ret.tr = add nsw i32 %.0, %accumulator.tr37
  ret i32 %accumulator.ret.tr
}

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 = { 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"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass