; LLVM IR from bqi343/cp-notebook :: Contests/USACO Solutions/2018-19/Jan 2019/Gold/poetry.ll (Z3expii)

; 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

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z3expii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %7 = load i32, ptr %5, align 4, !tbaa !5
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i64 1, ptr %3, align 8
  br label %50

10:                                               ; preds = %2
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = icmp eq i32 %11, 1
  br i1 %12, label %13, label %20

13:                                               ; preds = %10
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = load i64, ptr @MOD, align 8, !tbaa !9
  %17 = add nsw i64 %15, %16
  %18 = load i64, ptr @MOD, align 8, !tbaa !9
  %19 = srem i64 %17, %18
  store i64 %19, ptr %3, align 8
  br label %50

20:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sdiv i32 %22, 2
  %24 = call noundef i64 @_Z3expii(i32 noundef %21, i32 noundef %23)
  store i64 %24, ptr %6, align 8, !tbaa !9
  %25 = load i64, ptr %6, align 8, !tbaa !9
  %26 = load i64, ptr %6, align 8, !tbaa !9
  %27 = mul nsw i64 %25, %26
  %28 = load i64, ptr @MOD, align 8, !tbaa !9
  %29 = add nsw i64 %27, %28
  %30 = load i64, ptr @MOD, align 8, !tbaa !9
  %31 = srem i64 %29, %30
  store i64 %31, ptr %6, align 8, !tbaa !9
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = srem i32 %32, 2
  %34 = icmp eq i32 %33, 1
  br i1 %34, label %35, label %44

35:                                               ; preds = %20
  %36 = load i64, ptr %6, align 8, !tbaa !9
  %37 = load i32, ptr %4, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = mul nsw i64 %36, %38
  %40 = load i64, ptr @MOD, align 8, !tbaa !9
  %41 = add nsw i64 %39, %40
  %42 = load i64, ptr @MOD, align 8, !tbaa !9
  %43 = srem i64 %41, %42
  store i64 %43, ptr %6, align 8, !tbaa !9
  br label %44

44:                                               ; preds = %35, %20
  %45 = load i64, ptr %6, align 8, !tbaa !9
  %46 = load i64, ptr @MOD, align 8, !tbaa !9
  %47 = add nsw i64 %45, %46
  %48 = load i64, ptr @MOD, align 8, !tbaa !9
  %49 = srem i64 %47, %48
  store i64 %49, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %50

50:                                               ; preds = %44, %13, %9
  %51 = load i64, ptr %3, align 8
  ret i64 %51
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}


; 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

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z3expii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  switch i32 %1, label %8 [
    i32 0, label %25
    i32 1, label %3
  ]

3:                                                ; preds = %2
  %4 = sext i32 %0 to i64
  %5 = load i64, ptr @MOD, align 8, !tbaa !5
  %6 = add nsw i64 %5, %4
  %7 = srem i64 %6, %5
  br label %25

8:                                                ; preds = %2
  %9 = sdiv i32 %1, 2
  %10 = tail call noundef i64 @_Z3expii(i32 noundef %0, i32 noundef %9)
  %11 = mul nsw i64 %10, %10
  %12 = load i64, ptr @MOD, align 8, !tbaa !5
  %13 = add nsw i64 %11, %12
  %14 = srem i64 %13, %12
  %15 = and i32 %1, -2147483647
  %16 = icmp eq i32 %15, 1
  br i1 %16, label %17, label %22

17:                                               ; preds = %8
  %18 = sext i32 %0 to i64
  %19 = mul nsw i64 %14, %18
  %20 = add nsw i64 %19, %12
  %21 = srem i64 %20, %12
  br label %22

22:                                               ; preds = %17, %8
  %.0 = phi i64 [ %21, %17 ], [ %14, %8 ]
  %23 = add nsw i64 %.0, %12
  %24 = srem i64 %23, %12
  br label %25

25:                                               ; preds = %2, %22, %3
  %.012 = phi i64 [ %7, %3 ], [ %24, %22 ], [ 1, %2 ]
  ret i64 %.012
}

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


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