; LLVM IR from pixelsdb/mini-pixels :: pixels-core/lib/utils/DynamicIntArray.ll (ZN15DynamicIntArray5clearEv)

; 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"

%class.DynamicIntArray = type { i32, ptr, i32, i32 }

; 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 nounwind uwtable
define dso_local void @_ZN15DynamicIntArray5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %class.DynamicIntArray, ptr %4, i32 0, i32 2
  store i32 0, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !12
  br label %6

6:                                                ; preds = %27, %1
  %7 = load i32, ptr %3, align 4, !tbaa !12
  %8 = getelementptr inbounds %class.DynamicIntArray, ptr %4, i32 0, i32 3
  %9 = load i32, ptr %8, align 4, !tbaa !13
  %10 = icmp slt i32 %7, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %30

12:                                               ; preds = %6
  %13 = getelementptr inbounds %class.DynamicIntArray, ptr %4, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !14
  %15 = load i32, ptr %3, align 4, !tbaa !12
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds ptr, ptr %14, i64 %16
  %18 = load ptr, ptr %17, align 8, !tbaa !5
  %19 = icmp eq ptr %18, null
  br i1 %19, label %21, label %20

20:                                               ; preds = %12
  call void @_ZdaPv(ptr noundef %18) #4
  br label %21

21:                                               ; preds = %20, %12
  %22 = getelementptr inbounds %class.DynamicIntArray, ptr %4, i32 0, i32 1
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  %24 = load i32, ptr %3, align 4, !tbaa !12
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds ptr, ptr %23, i64 %25
  store ptr null, ptr %26, align 8, !tbaa !5
  br label %27

27:                                               ; preds = %21
  %28 = load i32, ptr %3, align 4, !tbaa !12
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %3, align 4, !tbaa !12
  br label %6, !llvm.loop !15

30:                                               ; preds = %11
  %31 = getelementptr inbounds %class.DynamicIntArray, ptr %4, i32 0, i32 3
  store i32 0, ptr %31, align 4, !tbaa !13
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nobuiltin 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 #3 = { nounwind }
attributes #4 = { builtin 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++ TBAA"}
!9 = !{!10, !11, i64 16}
!10 = !{!"_ZTS15DynamicIntArray", !11, i64 0, !6, i64 8, !11, i64 16, !11, i64 20}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 20}
!14 = !{!10, !6, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; 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 nounwind uwtable
define dso_local void @_ZN15DynamicIntArray5clearEv(ptr nocapture noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  store i32 0, ptr %2, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 20
  %4 = load i32, ptr %3, align 4, !tbaa !11
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  br label %7

._crit_edge:                                      ; preds = %14, %1
  store i32 0, ptr %3, align 4, !tbaa !11
  ret void

7:                                                ; preds = %.lr.ph, %14
  %8 = phi i32 [ %4, %.lr.ph ], [ %15, %14 ]
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %14 ]
  %9 = load ptr, ptr %6, align 8, !tbaa !12
  %10 = getelementptr inbounds ptr, ptr %9, i64 %indvars.iv
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = icmp eq ptr %11, null
  br i1 %12, label %14, label %13

13:                                               ; preds = %7
  tail call void @_ZdaPv(ptr noundef nonnull %11) #2
  %.pre = load ptr, ptr %6, align 8, !tbaa !12
  %.pre7 = load i32, ptr %3, align 4, !tbaa !11
  br label %14

14:                                               ; preds = %13, %7
  %15 = phi i32 [ %.pre7, %13 ], [ %8, %7 ]
  %16 = phi ptr [ %.pre, %13 ], [ %9, %7 ]
  %17 = getelementptr inbounds ptr, ptr %16, i64 %indvars.iv
  store ptr null, ptr %17, align 8, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = sext i32 %15 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %7, label %._crit_edge, !llvm.loop !14
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(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 = { nobuiltin 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 = { builtin 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, !7, i64 16}
!6 = !{!"_ZTS15DynamicIntArray", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 20}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 20}
!12 = !{!6, !10, i64 8}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass