; LLVM IR from devparthgarg/Data-Structures-and-Algorithms :: 05. Arrays/02 Insert/02 Insert.ll (Z6insertPiiii)

; 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 @_Z6insertPiiii(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
  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
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = sub nsw i32 %10, 1
  store i32 %11, ptr %9, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %29, %4
  %13 = load i32, ptr %9, align 4, !tbaa !9
  %14 = load i32, ptr %8, align 4, !tbaa !9
  %15 = sub nsw i32 %14, 1
  %16 = icmp sge i32 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %32

18:                                               ; preds = %12
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load i32, ptr %9, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i32, ptr %9, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %24, i64 %27
  store i32 %23, ptr %28, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %18
  %30 = load i32, ptr %9, align 4, !tbaa !9
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr %9, align 4, !tbaa !9
  br label %12, !llvm.loop !11

32:                                               ; preds = %17
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = sub nsw i32 %35, 1
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %34, i64 %37
  store i32 %33, ptr %38, align 4, !tbaa !9
  %39 = load i32, ptr %6, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %6, align 4, !tbaa !9
  %41 = load i32, ptr %6, align 4, !tbaa !9
  ret i32 %41
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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++ 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 nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local noundef range(i32 -2147483647, -2147483648) i32 @_Z6insertPiiii(ptr nocapture noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %.not13 = icmp slt i32 %1, %3
  br i1 %.not13, label %.._crit_edge_crit_edge, label %.lr.ph.preheader

.._crit_edge_crit_edge:                           ; preds = %4
  %.pre = sext i32 %3 to i64
  br label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %5 = sext i32 %1 to i64
  %6 = sext i32 %3 to i64
  %7 = add nsw i64 %5, 1
  %8 = sub nsw i64 %7, %6
  %min.iters.check = icmp ult i64 %8, 8
  br i1 %min.iters.check, label %.lr.ph.preheader21, label %vector.ph

.lr.ph.preheader21:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ %5, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %8, -8
  %ind.end = sub nsw i64 %5, %n.vec
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = sub i64 %5, %index
  %9 = getelementptr i32, ptr %0, i64 %offset.idx
  %10 = getelementptr i8, ptr %9, i64 -16
  %11 = getelementptr i8, ptr %9, i64 -32
  %wide.load = load <4 x i32>, ptr %10, align 4, !tbaa !5
  %wide.load17 = load <4 x i32>, ptr %11, align 4, !tbaa !5
  %12 = getelementptr inbounds i32, ptr %0, i64 %offset.idx
  %13 = getelementptr inbounds i8, ptr %12, i64 -12
  %14 = getelementptr inbounds i8, ptr %12, i64 -28
  store <4 x i32> %wide.load, ptr %13, align 4, !tbaa !5
  store <4 x i32> %wide.load17, ptr %14, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %8, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader21

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %6, %middle.block ], [ %6, %.lr.ph ]
  %16 = getelementptr i32, ptr %0, i64 %.pre-phi
  %17 = getelementptr i8, ptr %16, i64 -4
  store i32 %2, ptr %17, align 4, !tbaa !5
  %18 = add nsw i32 %1, 1
  ret i32 %18

.lr.ph:                                           ; preds = %.lr.ph.preheader21, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader21 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %19 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  store i32 %20, ptr %21, align 4, !tbaa !5
  %.not.not = icmp sgt i64 %indvars.iv, %6
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !13
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(argmem: readwrite) 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" }

!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, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass