; LLVM IR from kazunetakahashi/atcoder :: 2019/0217_nikkei2019-final/E.ll (Z5poweri)

; 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"

@memo = external dso_local global [100010 x i64], align 16
@.str = external hidden unnamed_addr constant [11 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [90 x i8], align 1
@__PRETTY_FUNCTION__._Z5poweri = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z5poweri(i32 noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 0
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  store i64 0, ptr %2, align 8
  br label %18

7:                                                ; preds = %1
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = icmp slt i32 %8, 100010
  br i1 %9, label %10, label %11

10:                                               ; preds = %7
  br label %13

11:                                               ; preds = %7
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 51, ptr noundef @__PRETTY_FUNCTION__._Z5poweri) #2
  unreachable

12:                                               ; No predecessors!
  br label %13

13:                                               ; preds = %12, %10
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [100010 x i64], ptr @memo, i64 0, i64 %15
  %17 = load i64, ptr %16, align 8, !tbaa !9
  store i64 %17, ptr %2, align 8
  br label %18

18:                                               ; preds = %13, %6
  %19 = load i64, ptr %2, align 8
  ret i64 %19
}

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

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 = { noreturn 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 #2 = { noreturn 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"

@memo = external dso_local local_unnamed_addr global [100010 x i64], align 16
@.str = external hidden unnamed_addr constant [11 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [90 x i8], align 1
@__PRETTY_FUNCTION__._Z5poweri = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z5poweri(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i32 %0, 0
  br i1 %2, label %10, label %3

3:                                                ; preds = %1
  %4 = icmp ult i32 %0, 100010
  br i1 %4, label %6, label %5

5:                                                ; preds = %3
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 51, ptr noundef nonnull @__PRETTY_FUNCTION__._Z5poweri) #2
  unreachable

6:                                                ; preds = %3
  %7 = zext nneg i32 %0 to i64
  %8 = getelementptr inbounds [100010 x i64], ptr @memo, i64 0, i64 %7
  %9 = load i64, ptr %8, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %1, %6
  %.0 = phi i64 [ %9, %6 ], [ 0, %1 ]
  ret i64 %.0
}

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

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 = { noreturn 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 #2 = { noreturn 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"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass