; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/ZSUM (z)

; 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
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3expxx(i64 noundef, i64 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 norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  br label %6

6:                                                ; preds = %14, %0
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = icmp ne i64 %7, 0
  br i1 %8, label %12, label %9

9:                                                ; preds = %6
  %10 = load i64, ptr %3, align 8, !tbaa !5
  %11 = icmp ne i64 %10, 0
  br label %12

12:                                               ; preds = %9, %6
  %13 = phi i1 [ true, %6 ], [ %11, %9 ]
  br i1 %13, label %14, label %50

14:                                               ; preds = %12
  %15 = load i64, ptr %2, align 8, !tbaa !5
  %16 = sub nsw i64 %15, 1
  %17 = load i64, ptr %3, align 8, !tbaa !5
  %18 = call noundef i64 @_Z3expxx(i64 noundef %16, i64 noundef %17)
  %19 = mul nsw i64 2, %18
  %20 = load i64, ptr @MOD, align 8, !tbaa !5
  %21 = srem i64 %19, %20
  store i64 %21, ptr %4, align 8, !tbaa !5
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = load i64, ptr %3, align 8, !tbaa !5
  %25 = call noundef i64 @_Z3expxx(i64 noundef %23, i64 noundef %24)
  %26 = add nsw i64 %22, %25
  %27 = load i64, ptr @MOD, align 8, !tbaa !5
  %28 = srem i64 %26, %27
  store i64 %28, ptr %4, align 8, !tbaa !5
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = load i64, ptr %2, align 8, !tbaa !5
  %31 = sub nsw i64 %30, 1
  %32 = load i64, ptr %2, align 8, !tbaa !5
  %33 = sub nsw i64 %32, 1
  %34 = call noundef i64 @_Z3expxx(i64 noundef %31, i64 noundef %33)
  %35 = mul nsw i64 2, %34
  %36 = load i64, ptr @MOD, align 8, !tbaa !5
  %37 = srem i64 %35, %36
  %38 = add nsw i64 %29, %37
  %39 = load i64, ptr @MOD, align 8, !tbaa !5
  %40 = srem i64 %38, %39
  store i64 %40, ptr %4, align 8, !tbaa !5
  %41 = load i64, ptr %4, align 8, !tbaa !5
  %42 = load i64, ptr %2, align 8, !tbaa !5
  %43 = load i64, ptr %2, align 8, !tbaa !5
  %44 = call noundef i64 @_Z3expxx(i64 noundef %42, i64 noundef %43)
  %45 = add nsw i64 %41, %44
  %46 = load i64, ptr @MOD, align 8, !tbaa !5
  %47 = srem i64 %45, %46
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %47)
  %49 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  br label %6, !llvm.loop !9

50:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

declare i32 @printf(ptr noundef, ...) #3

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 = { mustprogress norecurse 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 = { "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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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
@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3expxx(i64 noundef, i64 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 norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = icmp ne i64 %4, 0
  %6 = load i64, ptr %2, align 8
  %7 = icmp ne i64 %6, 0
  %8 = select i1 %5, i1 true, i1 %7
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %9 = phi i64 [ %39, %.lr.ph ], [ %6, %0 ]
  %10 = phi i64 [ %37, %.lr.ph ], [ %4, %0 ]
  %11 = add nsw i64 %10, -1
  %12 = call noundef i64 @_Z3expxx(i64 noundef %11, i64 noundef %9)
  %13 = shl nsw i64 %12, 1
  %14 = load i64, ptr @MOD, align 8, !tbaa !5
  %15 = srem i64 %13, %14
  %16 = load i64, ptr %1, align 8, !tbaa !5
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = call noundef i64 @_Z3expxx(i64 noundef %16, i64 noundef %17)
  %19 = add nsw i64 %18, %15
  %20 = load i64, ptr @MOD, align 8, !tbaa !5
  %21 = srem i64 %19, %20
  %22 = load i64, ptr %1, align 8, !tbaa !5
  %23 = add nsw i64 %22, -1
  %24 = call noundef i64 @_Z3expxx(i64 noundef %23, i64 noundef %23)
  %25 = shl nsw i64 %24, 1
  %26 = load i64, ptr @MOD, align 8, !tbaa !5
  %27 = srem i64 %25, %26
  %28 = add nsw i64 %27, %21
  %29 = srem i64 %28, %26
  %30 = load i64, ptr %1, align 8, !tbaa !5
  %31 = call noundef i64 @_Z3expxx(i64 noundef %30, i64 noundef %30)
  %32 = add nsw i64 %31, %29
  %33 = load i64, ptr @MOD, align 8, !tbaa !5
  %34 = srem i64 %32, %33
  %35 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %34)
  %36 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %37 = load i64, ptr %1, align 8, !tbaa !5
  %38 = icmp ne i64 %37, 0
  %39 = load i64, ptr %2, align 8
  %40 = icmp ne i64 %39, 0
  %41 = select i1 %38, i1 true, i1 %40
  br i1 %41, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

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 = { mustprogress norecurse 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 = { nofree nounwind "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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass