; LLVM IR from eyangch/competitive-programming :: USACOcontests/gold/2019.02/cowland.ll (Z3lcaii)

; 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"

@oe = external dso_local global [100000 x i32], align 16
@lg2 = external dso_local global [300000 x i32], align 16
@st = external dso_local global [20 x [300000 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z6idminfii(i32 noundef, i32 noundef) #0

; 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
define dso_local noundef i32 @_Z3lcaii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = 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) #3
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [100000 x i32], ptr @oe, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  store i32 %11, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [100000 x i32], ptr @oe, i64 0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  store i32 %15, ptr %6, align 4, !tbaa !5
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = icmp sgt i32 %16, %17
  br i1 %18, label %19, label %20

19:                                               ; preds = %2
  call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %6) #3
  br label %20

20:                                               ; preds = %19, %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sub nsw i32 %21, %22
  %24 = add nsw i32 %23, 1
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [300000 x i32], ptr @lg2, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  store i32 %27, ptr %7, align 4, !tbaa !5
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [20 x [300000 x i32]], ptr @st, i64 0, i64 %29
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [300000 x i32], ptr %30, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = load i32, ptr %7, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [20 x [300000 x i32]], ptr @st, i64 0, i64 %36
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = load i32, ptr %7, align 4, !tbaa !5
  %40 = shl i32 1, %39
  %41 = sub nsw i32 %38, %40
  %42 = add nsw i32 %41, 1
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [300000 x i32], ptr %37, i64 0, i64 %43
  %45 = load i32, ptr %44, align 4, !tbaa !5
  %46 = call noundef i32 @_Z6idminfii(i32 noundef %34, i32 noundef %45)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret i32 %46
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

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 = { inlinehint 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"}


; 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"

@oe = external dso_local local_unnamed_addr global [100000 x i32], align 16
@lg2 = external dso_local local_unnamed_addr global [300000 x i32], align 16
@st = external dso_local local_unnamed_addr global [20 x [300000 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z6idminfii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3lcaii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %5 = sext i32 %0 to i64
  %6 = getelementptr inbounds [100000 x i32], ptr @oe, i64 0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %7, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  %8 = sext i32 %1 to i64
  %9 = getelementptr inbounds [100000 x i32], ptr @oe, i64 0, i64 %8
  %10 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %10, ptr %4, align 4, !tbaa !5
  %11 = icmp sgt i32 %7, %10
  br i1 %11, label %12, label %13

12:                                               ; preds = %2
  call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %4) #3
  %.pre = load i32, ptr %4, align 4, !tbaa !5
  %.pre6 = load i32, ptr %3, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %12, %2
  %14 = phi i32 [ %.pre6, %12 ], [ %7, %2 ]
  %15 = phi i32 [ %.pre, %12 ], [ %10, %2 ]
  %16 = add i32 %15, 1
  %17 = sub i32 %16, %14
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [300000 x i32], ptr @lg2, i64 0, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = sext i32 %14 to i64
  %23 = getelementptr inbounds [20 x [300000 x i32]], ptr @st, i64 0, i64 %21, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %.neg = shl nsw i32 -1, %20
  %25 = add i32 %16, %.neg
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [20 x [300000 x i32]], ptr @st, i64 0, i64 %21, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = call noundef i32 @_Z6idminfii(i32 noundef %24, i32 noundef %28)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  ret i32 %29
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass