; LLVM IR from buzz-lang/Buzz :: src/buzz (buzzdarray)

; 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: nounwind uwtable
declare dso_local i32 @buzzdarray_part(ptr noundef, ptr noundef, i64 noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @buzzdarray_qsort(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  store i64 %3, ptr %8, align 8, !tbaa !9
  %10 = load i64, ptr %7, align 8, !tbaa !9
  %11 = load i64, ptr %8, align 8, !tbaa !9
  %12 = icmp slt i64 %10, %11
  br i1 %12, label %13, label %30

13:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load i64, ptr %7, align 8, !tbaa !9
  %17 = load i64, ptr %8, align 8, !tbaa !9
  %18 = call i32 @buzzdarray_part(ptr noundef %14, ptr noundef %15, i64 noundef %16, i64 noundef %17)
  %19 = zext i32 %18 to i64
  store i64 %19, ptr %9, align 8, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load i64, ptr %7, align 8, !tbaa !9
  %23 = load i64, ptr %9, align 8, !tbaa !9
  %24 = sub nsw i64 %23, 1
  call void @buzzdarray_qsort(ptr noundef %20, ptr noundef %21, i64 noundef %22, i64 noundef %24)
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = load i64, ptr %9, align 8, !tbaa !9
  %28 = add nsw i64 %27, 1
  %29 = load i64, ptr %8, align 8, !tbaa !9
  call void @buzzdarray_qsort(ptr noundef %25, ptr noundef %26, i64 noundef %28, i64 noundef %29)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %30

30:                                               ; preds = %13, %4
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @buzzdarray_part(ptr noundef, ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @buzzdarray_qsort(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %3) local_unnamed_addr #0 {
  %5 = icmp slt i64 %2, %3
  br i1 %5, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse:                                      ; preds = %4, %tailrecurse
  %.tr1517 = phi i64 [ %9, %tailrecurse ], [ %2, %4 ]
  %6 = tail call i32 @buzzdarray_part(ptr noundef %0, ptr noundef %1, i64 noundef %.tr1517, i64 noundef %3)
  %7 = zext i32 %6 to i64
  %8 = add nsw i64 %7, -1
  tail call void @buzzdarray_qsort(ptr noundef %0, ptr noundef %1, i64 noundef %.tr1517, i64 noundef %8)
  %9 = add nuw nsw i64 %7, 1
  %10 = icmp slt i64 %9, %3
  br i1 %10, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %4
  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)"}


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