; LLVM IR from nde-jesu/Doom_Nukem :: libft/srcs/memory (ft_memcpy)

; 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: nounwind uwtable
define dso_local ptr @ft_memcpy(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %12, ptr %10, align 8, !tbaa !5
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %13, ptr %8, align 8, !tbaa !5
  store i64 -1, ptr %9, align 8, !tbaa !9
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = icmp eq ptr %14, %15
  br i1 %16, label %17, label %19

17:                                               ; preds = %3
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %18, ptr %4, align 8
  store i32 1, ptr %11, align 4
  br label %48

19:                                               ; preds = %3
  %20 = load i64, ptr %7, align 8, !tbaa !9
  %21 = icmp eq i64 %20, 0
  br i1 %21, label %22, label %24

22:                                               ; preds = %19
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %23, ptr %4, align 8
  store i32 1, ptr %11, align 4
  br label %48

24:                                               ; preds = %19
  br label %25

25:                                               ; preds = %38, %24
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = icmp ne ptr %26, null
  br i1 %27, label %28, label %36

28:                                               ; preds = %25
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = icmp ne ptr %29, null
  br i1 %30, label %31, label %36

31:                                               ; preds = %28
  %32 = load i64, ptr %9, align 8, !tbaa !9
  %33 = add i64 %32, 1
  store i64 %33, ptr %9, align 8, !tbaa !9
  %34 = load i64, ptr %7, align 8, !tbaa !9
  %35 = icmp ult i64 %33, %34
  br label %36

36:                                               ; preds = %31, %28, %25
  %37 = phi i1 [ false, %28 ], [ false, %25 ], [ %35, %31 ]
  br i1 %37, label %38, label %46

38:                                               ; preds = %36
  %39 = load ptr, ptr %10, align 8, !tbaa !5
  %40 = load i64, ptr %9, align 8, !tbaa !9
  %41 = getelementptr inbounds i8, ptr %39, i64 %40
  %42 = load i8, ptr %41, align 1, !tbaa !11
  %43 = load ptr, ptr %8, align 8, !tbaa !5
  %44 = load i64, ptr %9, align 8, !tbaa !9
  %45 = getelementptr inbounds i8, ptr %43, i64 %44
  store i8 %42, ptr %45, align 1, !tbaa !11
  br label %25, !llvm.loop !12

46:                                               ; preds = %36
  %47 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %47, ptr %4, align 8
  store i32 1, ptr %11, align 4
  br label %48

48:                                               ; preds = %46, %22, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %49 = load ptr, ptr %4, align 8
  ret ptr %49
}

; 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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local noundef ptr @ft_memcpy(ptr noundef returned writeonly %0, ptr noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = ptrtoint ptr %1 to i64
  %5 = ptrtoint ptr %0 to i64
  %6 = icmp eq ptr %0, %1
  %7 = icmp eq i64 %2, 0
  %or.cond20 = or i1 %6, %7
  br i1 %or.cond20, label %.critedge, label %.preheader

.preheader:                                       ; preds = %3
  %8 = icmp ne ptr %0, null
  %9 = icmp ne ptr %1, null
  %or.cond = and i1 %8, %9
  br i1 %or.cond, label %iter.check, label %.critedge

iter.check:                                       ; preds = %.preheader
  %min.iters.check = icmp ult i64 %2, 8
  %10 = sub i64 %5, %4
  %diff.check = icmp ult i64 %10, 32
  %or.cond33 = or i1 %min.iters.check, %diff.check
  br i1 %or.cond33, label %.lr.ph23.preheader, label %vector.main.loop.iter.check

vector.main.loop.iter.check:                      ; preds = %iter.check
  %min.iters.check25 = icmp ult i64 %2, 32
  br i1 %min.iters.check25, label %vec.epilog.ph, label %vector.ph

vector.ph:                                        ; preds = %vector.main.loop.iter.check
  %n.vec = and i64 %2, -32
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %11 = getelementptr inbounds i8, ptr %1, i64 %index
  %12 = getelementptr inbounds i8, ptr %11, i64 16
  %wide.load = load <16 x i8>, ptr %11, align 1, !tbaa !5
  %wide.load26 = load <16 x i8>, ptr %12, align 1, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %0, i64 %index
  %14 = getelementptr inbounds i8, ptr %13, i64 16
  store <16 x i8> %wide.load, ptr %13, align 1, !tbaa !5
  store <16 x i8> %wide.load26, ptr %14, align 1, !tbaa !5
  %index.next = add nuw i64 %index, 32
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %2
  br i1 %cmp.n, label %.critedge, label %vec.epilog.iter.check

vec.epilog.iter.check:                            ; preds = %middle.block
  %n.vec.remaining = and i64 %2, 24
  %min.epilog.iters.check = icmp eq i64 %n.vec.remaining, 0
  br i1 %min.epilog.iters.check, label %.lr.ph23.preheader, label %vec.epilog.ph

vec.epilog.ph:                                    ; preds = %vector.main.loop.iter.check, %vec.epilog.iter.check
  %vec.epilog.resume.val = phi i64 [ %n.vec, %vec.epilog.iter.check ], [ 0, %vector.main.loop.iter.check ]
  %n.vec28 = and i64 %2, -8
  br label %vec.epilog.vector.body

vec.epilog.vector.body:                           ; preds = %vec.epilog.vector.body, %vec.epilog.ph
  %index29 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next31, %vec.epilog.vector.body ]
  %16 = getelementptr inbounds i8, ptr %1, i64 %index29
  %wide.load30 = load <8 x i8>, ptr %16, align 1, !tbaa !5
  %17 = getelementptr inbounds i8, ptr %0, i64 %index29
  store <8 x i8> %wide.load30, ptr %17, align 1, !tbaa !5
  %index.next31 = add nuw i64 %index29, 8
  %18 = icmp eq i64 %index.next31, %n.vec28
  br i1 %18, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !11

vec.epilog.middle.block:                          ; preds = %vec.epilog.vector.body
  %cmp.n32 = icmp eq i64 %n.vec28, %2
  br i1 %cmp.n32, label %.critedge, label %.lr.ph23.preheader

.lr.ph23.preheader:                               ; preds = %vec.epilog.middle.block, %iter.check, %vec.epilog.iter.check
  %.ph = phi i64 [ 0, %iter.check ], [ %n.vec, %vec.epilog.iter.check ], [ %n.vec28, %vec.epilog.middle.block ]
  %xtraiter = and i64 %2, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph23.prol.loopexit, label %.lr.ph23.prol

.lr.ph23.prol:                                    ; preds = %.lr.ph23.preheader, %.lr.ph23.prol
  %19 = phi i64 [ %23, %.lr.ph23.prol ], [ %.ph, %.lr.ph23.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph23.prol ], [ 0, %.lr.ph23.preheader ]
  %20 = getelementptr inbounds i8, ptr %1, i64 %19
  %21 = load i8, ptr %20, align 1, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %0, i64 %19
  store i8 %21, ptr %22, align 1, !tbaa !5
  %23 = add nuw i64 %19, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph23.prol.loopexit, label %.lr.ph23.prol, !llvm.loop !12

.lr.ph23.prol.loopexit:                           ; preds = %.lr.ph23.prol, %.lr.ph23.preheader
  %.unr = phi i64 [ %.ph, %.lr.ph23.preheader ], [ %23, %.lr.ph23.prol ]
  %24 = sub i64 %.ph, %2
  %25 = icmp ugt i64 %24, -4
  br i1 %25, label %.critedge, label %.lr.ph23

.lr.ph23:                                         ; preds = %.lr.ph23.prol.loopexit, %.lr.ph23
  %26 = phi i64 [ %42, %.lr.ph23 ], [ %.unr, %.lr.ph23.prol.loopexit ]
  %27 = getelementptr inbounds i8, ptr %1, i64 %26
  %28 = load i8, ptr %27, align 1, !tbaa !5
  %29 = getelementptr inbounds i8, ptr %0, i64 %26
  store i8 %28, ptr %29, align 1, !tbaa !5
  %30 = add nuw i64 %26, 1
  %31 = getelementptr inbounds i8, ptr %1, i64 %30
  %32 = load i8, ptr %31, align 1, !tbaa !5
  %33 = getelementptr inbounds i8, ptr %0, i64 %30
  store i8 %32, ptr %33, align 1, !tbaa !5
  %34 = add nuw i64 %26, 2
  %35 = getelementptr inbounds i8, ptr %1, i64 %34
  %36 = load i8, ptr %35, align 1, !tbaa !5
  %37 = getelementptr inbounds i8, ptr %0, i64 %34
  store i8 %36, ptr %37, align 1, !tbaa !5
  %38 = add nuw i64 %26, 3
  %39 = getelementptr inbounds i8, ptr %1, i64 %38
  %40 = load i8, ptr %39, align 1, !tbaa !5
  %41 = getelementptr inbounds i8, ptr %0, i64 %38
  store i8 %40, ptr %41, align 1, !tbaa !5
  %42 = add nuw i64 %26, 4
  %exitcond.not.3 = icmp eq i64 %42, %2
  br i1 %exitcond.not.3, label %.critedge, label %.lr.ph23, !llvm.loop !14

.critedge:                                        ; preds = %.lr.ph23.prol.loopexit, %.lr.ph23, %middle.block, %vec.epilog.middle.block, %.preheader, %3
  ret ptr %0
}

attributes #0 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9, !10}
!9 = !{!"llvm.loop.isvectorized", i32 1}
!10 = !{!"llvm.loop.unroll.runtime.disable"}
!11 = distinct !{!11, !9, !10}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.unroll.disable"}
!14 = distinct !{!14, !9}


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass