; LLVM IR from DionysiosB/CodeForces :: 0600-0699/678D-ItearatedLinearFunction-OLD.ll (Z8modPowerxxx)

; 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"

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z8modPowerxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) #0 {
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store i64 %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !5
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = icmp sle i64 %10, 0
  br i1 %11, label %12, label %13

12:                                               ; preds = %3
  store i64 0, ptr %4, align 8
  br label %48

13:                                               ; preds = %3
  %14 = load i64, ptr %5, align 8, !tbaa !5
  %15 = icmp eq i64 %14, 1
  br i1 %15, label %19, label %16

16:                                               ; preds = %13
  %17 = load i64, ptr %6, align 8, !tbaa !5
  %18 = icmp eq i64 %17, 0
  br i1 %18, label %19, label %20

19:                                               ; preds = %16, %13
  store i64 1, ptr %4, align 8
  br label %48

20:                                               ; preds = %16
  br label %21

21:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = load i64, ptr %6, align 8, !tbaa !5
  %24 = sdiv i64 %23, 2
  %25 = load i64, ptr %7, align 8, !tbaa !5
  %26 = call noundef i64 @_Z8modPowerxxx(i64 noundef %22, i64 noundef %24, i64 noundef %25)
  %27 = load i64, ptr %7, align 8, !tbaa !5
  %28 = srem i64 %26, %27
  store i64 %28, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %29 = load i64, ptr %8, align 8, !tbaa !5
  %30 = load i64, ptr %8, align 8, !tbaa !5
  %31 = mul nsw i64 %29, %30
  %32 = load i64, ptr %7, align 8, !tbaa !5
  %33 = srem i64 %31, %32
  %34 = load i64, ptr %6, align 8, !tbaa !5
  %35 = srem i64 %34, 2
  %36 = icmp ne i64 %35, 0
  br i1 %36, label %37, label %39

37:                                               ; preds = %21
  %38 = load i64, ptr %5, align 8, !tbaa !5
  br label %40

39:                                               ; preds = %21
  br label %40

40:                                               ; preds = %39, %37
  %41 = phi i64 [ %38, %37 ], [ 1, %39 ]
  %42 = load i64, ptr %7, align 8, !tbaa !5
  %43 = srem i64 %41, %42
  %44 = mul nsw i64 %33, %43
  %45 = load i64, ptr %7, align 8, !tbaa !5
  %46 = srem i64 %44, %45
  store i64 %46, ptr %9, align 8, !tbaa !5
  %47 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %47, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  br label %48

48:                                               ; preds = %40, %19, %12
  %49 = load i64, ptr %4, align 8
  ret i64 %49
}

; 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 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 = !{!"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"

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none) uwtable
define dso_local noundef range(i64 0, -9223372036854775808) i64 @_Z8modPowerxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = icmp slt i64 %0, 1
  br i1 %4, label %common.ret19, label %5

5:                                                ; preds = %3
  %6 = icmp eq i64 %0, 1
  %7 = icmp eq i64 %1, 0
  %or.cond = or i1 %6, %7
  br i1 %or.cond, label %common.ret19, label %8

common.ret19:                                     ; preds = %5, %3, %8
  %common.ret19.op = phi i64 [ %18, %8 ], [ 0, %3 ], [ 1, %5 ]
  ret i64 %common.ret19.op

8:                                                ; preds = %5
  %9 = sdiv i64 %1, 2
  %10 = tail call noundef i64 @_Z8modPowerxxx(i64 noundef %0, i64 noundef %9, i64 noundef %2)
  %11 = srem i64 %10, %2
  %12 = mul nuw nsw i64 %11, %11
  %13 = srem i64 %12, %2
  %14 = and i64 %1, 1
  %.not = icmp eq i64 %14, 0
  %15 = select i1 %.not, i64 1, i64 %0
  %16 = srem i64 %15, %2
  %17 = mul nuw nsw i64 %16, %13
  %18 = srem i64 %17, %2
  br label %common.ret19
}

attributes #0 = { mustprogress nofree nosync nounwind willreturn memory(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)"}


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