; LLVM IR from Robert-van-Engelen/lisp :: src (lisp-pr-single)

; 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"

@fin = external dso_local global i32, align 4
@.str.10 = external hidden unnamed_addr constant [2 x i8], align 1
@in = external dso_local global [10 x ptr], align 16

; Function Attrs: nounwind uwtable
define dso_local ptr @input(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load i32, ptr @fin, align 4, !tbaa !9
  %4 = icmp ule i32 %3, 9
  br i1 %4, label %5, label %18

5:                                                ; preds = %1
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = call noalias ptr @fopen(ptr noundef %6, ptr noundef @.str.10)
  %8 = load i32, ptr @fin, align 4, !tbaa !9
  %9 = zext i32 %8 to i64
  %10 = getelementptr inbounds [10 x ptr], ptr @in, i64 0, i64 %9
  store ptr %7, ptr %10, align 8, !tbaa !5
  %11 = icmp ne ptr %7, null
  br i1 %11, label %12, label %18

12:                                               ; preds = %5
  %13 = load i32, ptr @fin, align 4, !tbaa !9
  %14 = add i32 %13, 1
  store i32 %14, ptr @fin, align 4, !tbaa !9
  %15 = zext i32 %13 to i64
  %16 = getelementptr inbounds [10 x ptr], ptr @in, i64 0, i64 %15
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  br label %19

18:                                               ; preds = %5, %1
  br label %19

19:                                               ; preds = %18, %12
  %20 = phi ptr [ %17, %12 ], [ null, %18 ]
  ret ptr %20
}

declare noalias ptr @fopen(ptr noundef, ptr noundef) #1

attributes #0 = { 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 = { "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

@fin = external dso_local local_unnamed_addr global i32, align 4
@.str.10 = external hidden unnamed_addr constant [2 x i8], align 1
@in = external dso_local local_unnamed_addr global [10 x ptr], align 16

; Function Attrs: nofree nounwind uwtable
define dso_local noundef ptr @input(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @fin, align 4, !tbaa !5
  %3 = icmp ult i32 %2, 10
  br i1 %3, label %4, label %11

4:                                                ; preds = %1
  %5 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str.10)
  %6 = load i32, ptr @fin, align 4, !tbaa !5
  %7 = zext i32 %6 to i64
  %8 = getelementptr inbounds [10 x ptr], ptr @in, i64 0, i64 %7
  store ptr %5, ptr %8, align 8, !tbaa !9
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %11, label %9

9:                                                ; preds = %4
  %10 = add i32 %6, 1
  store i32 %10, ptr @fin, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %1, %4, %9
  %12 = phi ptr [ %5, %9 ], [ null, %4 ], [ null, %1 ]
  ret ptr %12
}

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #1

attributes #0 = { nofree 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 = { 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" }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


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