; LLVM IR from tangjz/acm-icpc :: buaa/oj3rd/972.ll (Z3rmqii)

; 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"

@Log = external dso_local global [100002 x i32], align 16
@st = external dso_local global [100002 x [17 x i64]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z3rmqii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = icmp sgt i32 %7, %8
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i64 0, ptr %3, align 8
  br label %38

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = sub nsw i32 %12, %13
  %15 = add nsw i32 %14, 1
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [100002 x i32], ptr @Log, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  store i32 %18, ptr %6, align 4, !tbaa !5
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100002 x [17 x i64]], ptr @st, i64 0, i64 %20
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [17 x i64], ptr %21, i64 0, i64 %23
  %25 = load i64, ptr %24, align 8, !tbaa !9
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = shl i32 1, %27
  %29 = sub nsw i32 %26, %28
  %30 = add nsw i32 %29, 1
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [100002 x [17 x i64]], ptr @st, i64 0, i64 %31
  %33 = load i32, ptr %6, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [17 x i64], ptr %32, i64 0, i64 %34
  %36 = load i64, ptr %35, align 8, !tbaa !9
  %37 = and i64 %25, %36
  store i64 %37, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %38

38:                                               ; preds = %11, %10
  %39 = load i64, ptr %3, align 8
  ret i64 %39
}

; 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 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 = { 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, !10, i64 0}
!10 = !{!"long long", !7, i64 0}


; 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"

@Log = external dso_local local_unnamed_addr global [100002 x i32], align 16
@st = external dso_local local_unnamed_addr global [100002 x [17 x i64]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z3rmqii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %0, %1
  br i1 %3, label %19, label %4

4:                                                ; preds = %2
  %reass.sub = sub i32 %1, %0
  %5 = add i32 %reass.sub, 1
  %6 = sext i32 %5 to i64
  %7 = getelementptr inbounds [100002 x i32], ptr @Log, i64 0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = sext i32 %0 to i64
  %10 = sext i32 %8 to i64
  %11 = getelementptr inbounds [100002 x [17 x i64]], ptr @st, i64 0, i64 %9, i64 %10
  %12 = load i64, ptr %11, align 8, !tbaa !9
  %.neg = shl nsw i32 -1, %8
  %13 = add i32 %1, 1
  %14 = add i32 %13, %.neg
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [100002 x [17 x i64]], ptr @st, i64 0, i64 %15, i64 %10
  %17 = load i64, ptr %16, align 8, !tbaa !9
  %18 = and i64 %17, %12
  br label %19

19:                                               ; preds = %2, %4
  %.0 = phi i64 [ %18, %4 ], [ 0, %2 ]
  ret i64 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, 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" }

!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, !10, i64 0}
!10 = !{!"long long", !7, i64 0}


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