; LLVM IR from eyangch/competitive-programming :: Codeforces/1541/d.ll (Z3dpfxx)

; 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"

@MOD = external dso_local global i64, align 8
@dp = external dso_local global [200 x [200 x i64]], align 16
@inv2 = external dso_local global i64, align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z3dpfxx(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  %6 = load i64, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds [200 x [200 x i64]], ptr @dp, i64 0, i64 %6
  %8 = load i64, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds [200 x i64], ptr %7, i64 0, i64 %8
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = icmp sge i64 %10, 0
  br i1 %11, label %12, label %18

12:                                               ; preds = %2
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds [200 x [200 x i64]], ptr @dp, i64 0, i64 %13
  %15 = load i64, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds [200 x i64], ptr %14, i64 0, i64 %15
  %17 = load i64, ptr %16, align 8, !tbaa !5
  store i64 %17, ptr %3, align 8
  br label %36

18:                                               ; preds = %2
  %19 = load i64, ptr @inv2, align 8, !tbaa !5
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = sub nsw i64 %20, 1
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = call noundef i64 @_Z3dpfxx(i64 noundef %21, i64 noundef %22)
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = sub nsw i64 %25, 1
  %27 = call noundef i64 @_Z3dpfxx(i64 noundef %24, i64 noundef %26)
  %28 = add nsw i64 %23, %27
  %29 = mul nsw i64 %19, %28
  %30 = load i64, ptr @MOD, align 8, !tbaa !5
  %31 = srem i64 %29, %30
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = getelementptr inbounds [200 x [200 x i64]], ptr @dp, i64 0, i64 %32
  %34 = load i64, ptr %5, align 8, !tbaa !5
  %35 = getelementptr inbounds [200 x i64], ptr %33, i64 0, i64 %34
  store i64 %31, ptr %35, align 8, !tbaa !5
  store i64 %31, ptr %3, align 8
  br label %36

36:                                               ; preds = %18, %12
  %37 = load i64, ptr %3, align 8
  ret i64 %37
}

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, !6, i64 0}
!6 = !{!"long long", !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"

@MOD = external dso_local local_unnamed_addr global i64, align 8
@dp = external dso_local local_unnamed_addr global [200 x [200 x i64]], align 16
@inv2 = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z3dpfxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds [200 x [200 x i64]], ptr @dp, i64 0, i64 %0, i64 %1
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = icmp sgt i64 %4, -1
  br i1 %5, label %common.ret12, label %6

common.ret12:                                     ; preds = %2, %6
  %common.ret12.op = phi i64 [ %15, %6 ], [ %4, %2 ]
  ret i64 %common.ret12.op

6:                                                ; preds = %2
  %7 = load i64, ptr @inv2, align 8, !tbaa !5
  %8 = add nsw i64 %0, -1
  %9 = tail call noundef i64 @_Z3dpfxx(i64 noundef %8, i64 noundef %1)
  %10 = add nsw i64 %1, -1
  %11 = tail call noundef i64 @_Z3dpfxx(i64 noundef %0, i64 noundef %10)
  %12 = add nsw i64 %11, %9
  %13 = mul nsw i64 %12, %7
  %14 = load i64, ptr @MOD, align 8, !tbaa !5
  %15 = srem i64 %13, %14
  store i64 %15, ptr %3, align 8, !tbaa !5
  br label %common.ret12
}

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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