; 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_partition_point_n(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %35, %4
  %12 = load i64, ptr %6, align 8, !tbaa !9
  %13 = icmp ne i64 %12, 0
  br i1 %13, label %14, label %36

14:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %15 = load i64, ptr %6, align 8, !tbaa !9
  %16 = lshr i64 %15, 1
  store i64 %16, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = load i64, ptr %9, align 8, !tbaa !9
  %19 = getelementptr inbounds i32, ptr %17, i64 %18
  store ptr %19, ptr %10, align 8, !tbaa !5
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = call i32 %20(ptr noundef %21, ptr noundef %22)
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %25, label %33

25:                                               ; preds = %14
  %26 = load ptr, ptr %10, align 8, !tbaa !5
  %27 = getelementptr inbounds i32, ptr %26, i32 1
  store ptr %27, ptr %10, align 8, !tbaa !5
  %28 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %28, ptr %5, align 8, !tbaa !5
  %29 = load i64, ptr %9, align 8, !tbaa !9
  %30 = add i64 %29, 1
  %31 = load i64, ptr %6, align 8, !tbaa !9
  %32 = sub i64 %31, %30
  store i64 %32, ptr %6, align 8, !tbaa !9
  br label %35

33:                                               ; preds = %14
  %34 = load i64, ptr %9, align 8, !tbaa !9
  store i64 %34, ptr %6, align 8, !tbaa !9
  br label %35

35:                                               ; preds = %33, %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %11, !llvm.loop !11

36:                                               ; preds = %11
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  ret ptr %37
}

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}
!11 = distinct !{!11, !12}
!12 = !{!"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_partition_point_n(ptr noundef %0, i64 noundef %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #0 {
  %.not15 = icmp eq i64 %1, 0
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %.lr.ph
  %.017 = phi ptr [ %.1, %.lr.ph ], [ %0, %4 ]
  %.01216 = phi i64 [ %.113, %.lr.ph ], [ %1, %4 ]
  %5 = lshr i64 %.01216, 1
  %6 = getelementptr inbounds i32, ptr %.017, i64 %5
  %7 = tail call i32 %2(ptr noundef %6, ptr noundef %3) #1
  %.not14 = icmp eq i32 %7, 0
  %8 = getelementptr inbounds i8, ptr %6, i64 4
  %.neg = xor i64 %5, -1
  %9 = add i64 %.01216, %.neg
  %.113 = select i1 %.not14, i64 %5, i64 %9
  %.1 = select i1 %.not14, ptr %.017, ptr %8
  %.not = icmp eq i64 %.113, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %4
  %.0.lcssa = phi ptr [ %0, %4 ], [ %.1, %.lr.ph ]
  ret ptr %.0.lcssa
}

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: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass