; LLVM IR from devparthgarg/Data-Structures-and-Algorithms :: 07. Sorting/13 Lomuto Partition/13b Lomuto Partitioning.ll (Z15lomutoPartitionPiiii)

; 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z15lomutoPartitionPiiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load i32, ptr %8, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds i32, ptr %12, i64 %14
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i32, ptr %16, i64 %18
  call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %15, ptr noundef nonnull align 4 dereferenceable(4) %19) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !9
  store i32 %24, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = sub nsw i32 %25, 1
  store i32 %26, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %27 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %27, ptr %11, align 4, !tbaa !9
  br label %28

28:                                               ; preds = %54, %4
  %29 = load i32, ptr %11, align 4, !tbaa !9
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = sub nsw i32 %30, 1
  %32 = icmp sle i32 %29, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %57

34:                                               ; preds = %28
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = load i32, ptr %11, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %35, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = load i32, ptr %9, align 4, !tbaa !9
  %41 = icmp slt i32 %39, %40
  br i1 %41, label %42, label %53

42:                                               ; preds = %34
  %43 = load i32, ptr %10, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %10, align 4, !tbaa !9
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds i32, ptr %45, i64 %47
  %49 = load ptr, ptr %5, align 8, !tbaa !5
  %50 = load i32, ptr %11, align 4, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds i32, ptr %49, i64 %51
  call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %48, ptr noundef nonnull align 4 dereferenceable(4) %52) #3
  br label %53

53:                                               ; preds = %42, %34
  br label %54

54:                                               ; preds = %53
  %55 = load i32, ptr %11, align 4, !tbaa !9
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %11, align 4, !tbaa !9
  br label %28, !llvm.loop !11

57:                                               ; preds = %33
  %58 = load ptr, ptr %5, align 8, !tbaa !5
  %59 = load i32, ptr %10, align 4, !tbaa !9
  %60 = add nsw i32 %59, 1
  %61 = sext i32 %60 to i64
  %62 = getelementptr inbounds i32, ptr %58, i64 %61
  %63 = load ptr, ptr %5, align 8, !tbaa !5
  %64 = load i32, ptr %7, align 4, !tbaa !9
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds i32, ptr %63, i64 %65
  call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %62, ptr noundef nonnull align 4 dereferenceable(4) %66) #3
  %67 = load i32, ptr %10, align 4, !tbaa !9
  %68 = add nsw i32 %67, 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret i32 %68
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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 = { inlinehint 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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: mustprogress nounwind uwtable
define dso_local noundef range(i32 -2147483647, -2147483648) i32 @_Z15lomutoPartitionPiiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = sext i32 %3 to i64
  %6 = getelementptr inbounds i32, ptr %0, i64 %5
  %7 = sext i32 %2 to i64
  %8 = getelementptr inbounds i32, ptr %0, i64 %7
  tail call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %8) #2
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %.not.not24 = icmp slt i32 %1, %2
  br i1 %.not.not24, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %10 = add nsw i32 %1, -1
  %11 = sext i32 %1 to i64
  br label %.lr.ph

._crit_edge.loopexit:                             ; preds = %22
  %12 = add nsw i32 %.1, 1
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %4
  %.023.lcssa = phi i32 [ %1, %4 ], [ %12, %._crit_edge.loopexit ]
  %13 = sext i32 %.023.lcssa to i64
  %14 = getelementptr inbounds i32, ptr %0, i64 %13
  tail call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %14, ptr noundef nonnull align 4 dereferenceable(4) %8) #2
  ret i32 %.023.lcssa

.lr.ph:                                           ; preds = %.lr.ph.preheader, %22
  %indvars.iv = phi i64 [ %11, %.lr.ph.preheader ], [ %indvars.iv.next, %22 ]
  %.02325 = phi i32 [ %10, %.lr.ph.preheader ], [ %.1, %22 ]
  %15 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = icmp slt i32 %16, %9
  br i1 %17, label %18, label %22

18:                                               ; preds = %.lr.ph
  %19 = add nsw i32 %.02325, 1
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds i32, ptr %0, i64 %20
  tail call void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4) %21, ptr noundef nonnull align 4 dereferenceable(4) %15) #2
  br label %22

22:                                               ; preds = %.lr.ph, %18
  %.1 = phi i32 [ %19, %18 ], [ %.02325, %.lr.ph ]
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
  %exitcond.not = icmp eq i32 %lftr.wideiv, %2
  br i1 %exitcond.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !9
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIiENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) 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 = { inlinehint 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass