; LLVM IR from clibraries/array-algorithms :: test (impl)

; 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"

%struct.Person = type { i32, [32 x i8] }

; 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @person_array_remove_if_not(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = load ptr, ptr %7, align 8, !tbaa !5
  %13 = icmp eq ptr %11, %12
  br i1 %13, label %14, label %16

14:                                               ; preds = %4
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %15, ptr %5, align 8
  br label %38

16:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %17, ptr %10, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %33, %16
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = icmp ne ptr %19, %20
  br i1 %21, label %22, label %36

22:                                               ; preds = %18
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %9, align 8, !tbaa !5
  %26 = call i32 %23(ptr noundef %24, ptr noundef %25)
  %27 = icmp ne i32 %26, 0
  br i1 %27, label %28, label %33

28:                                               ; preds = %22
  %29 = load ptr, ptr %10, align 8, !tbaa !5
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %29, ptr align 4 %30, i64 36, i1 false), !tbaa.struct !9
  %31 = load ptr, ptr %10, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.Person, ptr %31, i32 1
  store ptr %32, ptr %10, align 8, !tbaa !5
  br label %33

33:                                               ; preds = %28, %22
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.Person, ptr %34, i32 1
  store ptr %35, ptr %6, align 8, !tbaa !5
  br label %18, !llvm.loop !13

36:                                               ; preds = %18
  %37 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %37, ptr %5, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %38

38:                                               ; preds = %36, %14
  %39 = load ptr, ptr %5, align 8
  ret ptr %39
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 = !{i64 0, i64 4, !10, i64 4, i64 32, !12}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!7, !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @person_array_remove_if_not(ptr noundef %0, ptr noundef readnone %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #1 {
  %5 = icmp eq ptr %0, %1
  br i1 %5, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %4, %9
  %.022 = phi ptr [ %.1, %9 ], [ %0, %4 ]
  %.01621 = phi ptr [ %10, %9 ], [ %0, %4 ]
  %6 = tail call i32 %2(ptr noundef %.01621, ptr noundef %3) #2
  %.not20 = icmp eq i32 %6, 0
  br i1 %.not20, label %9, label %7

7:                                                ; preds = %.preheader
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 4 dereferenceable(36) %.022, ptr noundef nonnull align 4 dereferenceable(36) %.01621, i64 36, i1 false), !tbaa.struct !5
  %8 = getelementptr inbounds i8, ptr %.022, i64 36
  br label %9

9:                                                ; preds = %7, %.preheader
  %.1 = phi ptr [ %8, %7 ], [ %.022, %.preheader ]
  %10 = getelementptr inbounds i8, ptr %.01621, i64 36
  %.not = icmp eq ptr %10, %1
  br i1 %.not, label %.loopexit, label %.preheader, !llvm.loop !11

.loopexit:                                        ; preds = %9, %4
  %.015 = phi ptr [ %0, %4 ], [ %.1, %9 ]
  ret ptr %.015
}

attributes #0 = { mustprogress nocallback nofree 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 = !{i64 0, i64 4, !6, i64 4, i64 32, !10}
!6 = !{!7, !7, i64 0}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!8, !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass