; LLVM IR from kazunetakahashi/atcoder :: 2018/0805_ABC104/D.ll (Z5powerxx)

; 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: 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 uwtable
define dso_local noundef i64 @_Z5powerxx(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 %5, align 8, !tbaa !5
  %8 = icmp slt i64 %7, 0
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i64 0, ptr %3, align 8
  br label %35

10:                                               ; preds = %2
  %11 = load i64, ptr %5, align 8, !tbaa !5
  %12 = icmp eq i64 %11, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %10
  store i64 1, ptr %3, align 8
  br label %35

14:                                               ; preds = %10
  %15 = load i64, ptr %5, align 8, !tbaa !5
  %16 = srem i64 %15, 2
  %17 = icmp eq i64 %16, 1
  br i1 %17, label %18, label %26

18:                                               ; preds = %14
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = load i64, ptr %5, align 8, !tbaa !5
  %22 = sub nsw i64 %21, 1
  %23 = call noundef i64 @_Z5powerxx(i64 noundef %20, i64 noundef %22)
  %24 = mul nsw i64 %19, %23
  %25 = srem i64 %24, 1000000007
  store i64 %25, ptr %3, align 8
  br label %35

26:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = sdiv i64 %28, 2
  %30 = call noundef i64 @_Z5powerxx(i64 noundef %27, i64 noundef %29)
  store i64 %30, ptr %6, align 8, !tbaa !5
  %31 = load i64, ptr %6, align 8, !tbaa !5
  %32 = load i64, ptr %6, align 8, !tbaa !5
  %33 = mul nsw i64 %31, %32
  %34 = srem i64 %33, 1000000007
  store i64 %34, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %35

35:                                               ; preds = %26, %18, %13, %9
  %36 = load i64, ptr %3, align 8
  ret i64 %36
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 -1000000006, 1000000007) i64 @_Z5powerxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i64 %1, 0
  br i1 %3, label %common.ret12, label %4

4:                                                ; preds = %2
  %5 = icmp eq i64 %1, 0
  br i1 %5, label %common.ret12, label %6

6:                                                ; preds = %4
  %7 = and i64 %1, 1
  %.not = icmp eq i64 %7, 0
  br i1 %.not, label %13, label %8

common.ret12:                                     ; preds = %4, %2, %13, %8
  %common.ret12.op = phi i64 [ %12, %8 ], [ %17, %13 ], [ 0, %2 ], [ 1, %4 ]
  ret i64 %common.ret12.op

8:                                                ; preds = %6
  %9 = add nsw i64 %1, -1
  %10 = tail call noundef i64 @_Z5powerxx(i64 noundef %0, i64 noundef %9)
  %11 = mul nsw i64 %10, %0
  %12 = srem i64 %11, 1000000007
  br label %common.ret12

13:                                               ; preds = %6
  %14 = lshr exact i64 %1, 1
  %15 = tail call noundef i64 @_Z5powerxx(i64 noundef %0, i64 noundef %14)
  %16 = mul nsw i64 %15, %15
  %17 = urem i64 %16, 1000000007
  br label %common.ret12
}

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,SROAPass,SimplifyCFGPass,TailCallElimPass