; 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
declare dso_local void @intv_swap(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @intv_partition(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
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %10, ptr %9, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %26, %4
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = icmp ne ptr %12, %13
  br i1 %14, label %15, label %29

15:                                               ; preds = %11
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = call i32 %16(ptr noundef %17, ptr noundef %18)
  %20 = icmp ne i32 %19, 0
  br i1 %20, label %21, label %26

21:                                               ; preds = %15
  %22 = load ptr, ptr %9, align 8, !tbaa !5
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  call void @intv_swap(ptr noundef %22, ptr noundef %23)
  %24 = load ptr, ptr %9, align 8, !tbaa !5
  %25 = getelementptr inbounds i32, ptr %24, i32 1
  store ptr %25, ptr %9, align 8, !tbaa !5
  br label %26

26:                                               ; preds = %21, %15
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds i32, ptr %27, i32 1
  store ptr %28, ptr %5, align 8, !tbaa !5
  br label %11, !llvm.loop !9

29:                                               ; preds = %11
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  ret ptr %30
}

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
declare dso_local void @intv_swap(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @intv_partition(ptr noundef %0, ptr noundef readnone %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #0 {
  %.not13 = icmp eq ptr %0, %1
  br i1 %.not13, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %8
  %.015 = phi ptr [ %.1, %8 ], [ %0, %4 ]
  %.01114 = phi ptr [ %9, %8 ], [ %0, %4 ]
  %5 = tail call i32 %2(ptr noundef %.01114, ptr noundef %3) #1
  %.not12 = icmp eq i32 %5, 0
  br i1 %.not12, label %8, label %6

6:                                                ; preds = %.lr.ph
  tail call void @intv_swap(ptr noundef %.015, ptr noundef %.01114)
  %7 = getelementptr inbounds i8, ptr %.015, i64 4
  br label %8

8:                                                ; preds = %6, %.lr.ph
  %.1 = phi ptr [ %7, %6 ], [ %.015, %.lr.ph ]
  %9 = getelementptr inbounds i8, ptr %.01114, i64 4
  %.not = icmp eq ptr %9, %1
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %8, %4
  %.0.lcssa = phi ptr [ %0, %4 ], [ %.1, %8 ]
  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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass