; LLVM IR from AdarshGaur/Competitive-Programming :: Codechef/December Challenge 2021 Division 2/d.ll (Z3nCrll)

; 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"

@f = external dso_local global [100007 x i64], align 16
@invf = external dso_local global [100007 x i64], 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: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z3nCrll(i64 noundef %0, i64 noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  %7 = load i64, ptr %4, align 8, !tbaa !5
  %8 = icmp slt i64 %7, 1
  br i1 %8, label %16, label %9

9:                                                ; preds = %2
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = icmp slt i64 %10, 0
  br i1 %11, label %16, label %12

12:                                               ; preds = %9
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %5, align 8, !tbaa !5
  %15 = icmp slt i64 %13, %14
  br i1 %15, label %16, label %17

16:                                               ; preds = %12, %9, %2
  store i64 0, ptr %3, align 8
  br label %38

17:                                               ; preds = %12
  %18 = load i64, ptr %5, align 8, !tbaa !5
  %19 = icmp eq i64 %18, 0
  br i1 %19, label %20, label %21

20:                                               ; preds = %17
  store i64 1, ptr %3, align 8
  br label %38

21:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds [100007 x i64], ptr @f, i64 0, i64 %22
  %24 = load i64, ptr %23, align 8, !tbaa !5
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds [100007 x i64], ptr @invf, i64 0, i64 %25
  %27 = load i64, ptr %26, align 8, !tbaa !5
  %28 = mul nsw i64 %24, %27
  %29 = srem i64 %28, 1000000007
  store i64 %29, ptr %6, align 8, !tbaa !5
  %30 = load i64, ptr %6, align 8, !tbaa !5
  %31 = load i64, ptr %4, align 8, !tbaa !5
  %32 = load i64, ptr %5, align 8, !tbaa !5
  %33 = sub nsw i64 %31, %32
  %34 = getelementptr inbounds [100007 x i64], ptr @invf, i64 0, i64 %33
  %35 = load i64, ptr %34, align 8, !tbaa !5
  %36 = mul nsw i64 %30, %35
  %37 = srem i64 %36, 1000000007
  store i64 %37, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %38

38:                                               ; preds = %21, %20, %16
  %39 = load i64, ptr %3, align 8
  ret i64 %39
}

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

@f = external dso_local local_unnamed_addr global [100007 x i64], align 16
@invf = external dso_local local_unnamed_addr global [100007 x i64], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef range(i64 -1000000006, 1000000007) i64 @_Z3nCrll(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i64 %0, 1
  %4 = icmp slt i64 %1, 0
  %or.cond = or i1 %3, %4
  %5 = icmp slt i64 %0, %1
  %or.cond14 = or i1 %5, %or.cond
  br i1 %or.cond14, label %20, label %6

6:                                                ; preds = %2
  %7 = icmp eq i64 %1, 0
  br i1 %7, label %20, label %8

8:                                                ; preds = %6
  %9 = getelementptr inbounds [100007 x i64], ptr @f, i64 0, i64 %0
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = getelementptr inbounds [100007 x i64], ptr @invf, i64 0, i64 %1
  %12 = load i64, ptr %11, align 8, !tbaa !5
  %13 = mul nsw i64 %12, %10
  %14 = srem i64 %13, 1000000007
  %15 = sub nsw i64 %0, %1
  %16 = getelementptr inbounds [100007 x i64], ptr @invf, i64 0, i64 %15
  %17 = load i64, ptr %16, align 8, !tbaa !5
  %18 = mul nsw i64 %14, %17
  %19 = srem i64 %18, 1000000007
  br label %20

20:                                               ; preds = %6, %2, %8
  %.0 = phi i64 [ %19, %8 ], [ 0, %2 ], [ 1, %6 ]
  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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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