; LLVM IR from AlgoGenesis/C :: Recursion/UlamSequence (ulamsequence)

; 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"

@ulamCount = external dso_local global i32, align 4
@ulam = external dso_local global [1000 x i32], align 16

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @isUlam(i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @generateUlam(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = icmp sgt i32 %3, 1000
  br i1 %4, label %5, label %6

5:                                                ; preds = %1
  br label %18

6:                                                ; preds = %1
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = call zeroext i1 @isUlam(i32 noundef %7)
  br i1 %8, label %9, label %15

9:                                                ; preds = %6
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = load i32, ptr @ulamCount, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr @ulamCount, align 4, !tbaa !5
  %13 = sext i32 %11 to i64
  %14 = getelementptr inbounds [1000 x i32], ptr @ulam, i64 0, i64 %13
  store i32 %10, ptr %14, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %9, %6
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  call void @generateUlam(i32 noundef %17)
  br label %18

18:                                               ; preds = %15, %5
  ret void
}

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" }

!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"}


; 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"

@ulamCount = external dso_local local_unnamed_addr global i32, align 4
@ulam = external dso_local local_unnamed_addr global [1000 x i32], align 16

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @isUlam(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @generateUlam(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp sgt i32 %0, 1000
  br i1 %2, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %tailrecurse
  %.tr4 = phi i32 [ %9, %tailrecurse ], [ %0, %1 ]
  %3 = tail call zeroext i1 @isUlam(i32 noundef %.tr4)
  br i1 %3, label %4, label %tailrecurse

4:                                                ; preds = %.lr.ph
  %5 = load i32, ptr @ulamCount, align 4, !tbaa !5
  %6 = add nsw i32 %5, 1
  store i32 %6, ptr @ulamCount, align 4, !tbaa !5
  %7 = sext i32 %5 to i64
  %8 = getelementptr inbounds [1000 x i32], ptr @ulam, i64 0, i64 %7
  store i32 %.tr4, ptr %8, align 4, !tbaa !5
  br label %tailrecurse

tailrecurse:                                      ; preds = %4, %.lr.ph
  %9 = add i32 %.tr4, 1
  %exitcond = icmp eq i32 %9, 1001
  br i1 %exitcond, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %1
  ret void
}

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" }

!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"}


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass