; LLVM IR from ncduy0303/Competitive-Programming :: Graphs/Lowest Common Ancestor/LCA (RMQ).ll (Z9min_queryii)

; 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.std::array" = type { [2 x i32] }

@lg = external dso_local global [400002 x i32], align 16
@dp = external dso_local global [400002 x [30 x %"struct.std::array"]], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZSt3minISt5arrayIiLm2EEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z9min_queryii(i32 noundef %0, i32 noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %6 = load i32, ptr %4, align 4, !tbaa !5
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = sub nsw i32 %6, %7
  %9 = add nsw i32 %8, 1
  %10 = sext i32 %9 to i64
  %11 = getelementptr inbounds [400002 x i32], ptr @lg, i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  store i32 %12, ptr %5, align 4, !tbaa !5
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [400002 x [30 x %"struct.std::array"]], ptr @dp, i64 0, i64 %14
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [30 x %"struct.std::array"], ptr %15, i64 0, i64 %17
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = shl i32 1, %20
  %22 = sub nsw i32 %19, %21
  %23 = add nsw i32 %22, 1
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [400002 x [30 x %"struct.std::array"]], ptr @dp, i64 0, i64 %24
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [30 x %"struct.std::array"], ptr %25, i64 0, i64 %27
  %29 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZSt3minISt5arrayIiLm2EEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(8) %18, ptr noundef nonnull align 4 dereferenceable(8) %28)
  %30 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIiLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %29, i64 noundef 1) #4
  %31 = load i32, ptr %30, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret i32 %31
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIiLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8), i64 noundef) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 #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 = { 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 #4 = { 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"

%"struct.std::array" = type { [2 x i32] }

@lg = external dso_local local_unnamed_addr global [400002 x i32], align 16
@dp = external dso_local global [400002 x [30 x %"struct.std::array"]], align 16

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZSt3minISt5arrayIiLm2EEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z9min_queryii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %reass.sub = sub i32 %1, %0
  %3 = add i32 %reass.sub, 1
  %4 = sext i32 %3 to i64
  %5 = getelementptr inbounds [400002 x i32], ptr @lg, i64 0, i64 %4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = sext i32 %0 to i64
  %8 = sext i32 %6 to i64
  %9 = getelementptr inbounds [400002 x [30 x %"struct.std::array"]], ptr @dp, i64 0, i64 %7, i64 %8
  %.neg = shl nsw i32 -1, %6
  %10 = add i32 %1, 1
  %11 = add i32 %10, %.neg
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [400002 x [30 x %"struct.std::array"]], ptr @dp, i64 0, i64 %12, i64 %8
  %14 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZSt3minISt5arrayIiLm2EEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(8) %9, ptr noundef nonnull align 4 dereferenceable(8) %13)
  %15 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIiLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %14, i64 noundef 1) #3
  %16 = load i32, ptr %15, align 4, !tbaa !5
  ret i32 %16
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayIiLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8), i64 noundef) local_unnamed_addr #2 align 2

attributes #0 = { inlinehint 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 = { 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 #2 = { 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 #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"}


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