; 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"

; 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
define dso_local ptr @intv_adjacent_find(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %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
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  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
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = icmp ne ptr %13, %14
  br i1 %15, label %16, label %42

16:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %17, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %18 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %18, ptr %11, align 8, !tbaa !5
  %19 = load ptr, ptr %11, align 8, !tbaa !5
  %20 = getelementptr inbounds i32, ptr %19, i32 1
  store ptr %20, ptr %11, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %34, %16
  %22 = load ptr, ptr %11, align 8, !tbaa !5
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = icmp ne ptr %22, %23
  br i1 %24, label %25, label %38

25:                                               ; preds = %21
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = load ptr, ptr %10, align 8, !tbaa !5
  %28 = load ptr, ptr %11, align 8, !tbaa !5
  %29 = load ptr, ptr %9, align 8, !tbaa !5
  %30 = call i32 %26(ptr noundef %27, ptr noundef %28, ptr noundef %29)
  %31 = icmp eq i32 %30, 0
  br i1 %31, label %32, label %34

32:                                               ; preds = %25
  %33 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %33, ptr %5, align 8
  store i32 1, ptr %12, align 4
  br label %39

34:                                               ; preds = %25
  %35 = load ptr, ptr %11, align 8, !tbaa !5
  store ptr %35, ptr %10, align 8, !tbaa !5
  %36 = load ptr, ptr %11, align 8, !tbaa !5
  %37 = getelementptr inbounds i32, ptr %36, i32 1
  store ptr %37, ptr %11, align 8, !tbaa !5
  br label %21, !llvm.loop !9

38:                                               ; preds = %21
  store i32 0, ptr %12, align 4
  br label %39

39:                                               ; preds = %38, %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  %40 = load i32, ptr %12, align 4
  switch i32 %40, label %46 [
    i32 0, label %41
    i32 1, label %44
  ]

41:                                               ; preds = %39
  br label %42

42:                                               ; preds = %41, %4
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %43, ptr %5, align 8
  br label %44

44:                                               ; preds = %42, %39
  %45 = load ptr, ptr %5, align 8
  ret ptr %45

46:                                               ; preds = %39
  unreachable
}

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 = distinct !{!9, !10}
!10 = !{!"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: nounwind uwtable
define dso_local ptr @intv_adjacent_find(ptr noundef %0, ptr noundef readnone %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, %1
  br i1 %.not, label %.thread, label %.preheader

.preheader:                                       ; preds = %4, %5
  %.017 = phi ptr [ %.016, %5 ], [ %0, %4 ]
  %.016 = getelementptr inbounds i8, ptr %.017, i64 4
  %.not21.not = icmp eq ptr %.016, %1
  br i1 %.not21.not, label %.thread, label %5

5:                                                ; preds = %.preheader
  %6 = tail call i32 %2(ptr noundef %.017, ptr noundef nonnull %.016, ptr noundef %3) #1
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %.thread, label %.preheader, !llvm.loop !5

.thread:                                          ; preds = %.preheader, %5, %4
  %.1 = phi ptr [ %1, %4 ], [ %1, %.preheader ], [ %.017, %5 ]
  ret ptr %.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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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