; LLVM IR from simon-zerisenay/42_Push_Swap :: libft (ft_bzero)

; 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 void @ft_bzero(ptr noundef %0, i64 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %6

6:                                                ; preds = %10, %2
  %7 = load i64, ptr %4, align 8, !tbaa !9
  %8 = add i64 %7, -1
  store i64 %8, ptr %4, align 8, !tbaa !9
  %9 = icmp ne i64 %7, 0
  br i1 %9, label %10, label %16

10:                                               ; preds = %6
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load i32, ptr %5, align 4, !tbaa !11
  %13 = add i32 %12, 1
  store i32 %13, ptr %5, align 4, !tbaa !11
  %14 = zext i32 %12 to i64
  %15 = getelementptr inbounds i8, ptr %11, i64 %14
  store i8 0, ptr %15, align 1, !tbaa !13
  br label %6, !llvm.loop !14

16:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

; 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 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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: write) uwtable
define dso_local void @ft_bzero(ptr nocapture noundef writeonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not3 = icmp eq i64 %1, 0
  br i1 %.not3, label %._crit_edge, label %iter.check

iter.check:                                       ; preds = %2
  %3 = add i64 %1, -4294967297
  %or.cond = icmp ult i64 %3, -4294967289
  br i1 %or.cond, label %.lr.ph.preheader, label %vector.main.loop.iter.check

vector.main.loop.iter.check:                      ; preds = %iter.check
  %min.iters.check6 = icmp ult i64 %1, 32
  br i1 %min.iters.check6, label %vec.epilog.ph, label %vector.ph

vector.ph:                                        ; preds = %vector.main.loop.iter.check
  %n.vec = and i64 %1, 8589934560
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %4 = and i64 %index, 4294967264
  %5 = getelementptr inbounds i8, ptr %0, i64 %4
  %6 = getelementptr inbounds i8, ptr %5, i64 16
  store <16 x i8> zeroinitializer, ptr %5, align 1, !tbaa !5
  store <16 x i8> zeroinitializer, ptr %6, align 1, !tbaa !5
  %index.next = add nuw i64 %index, 32
  %7 = icmp eq i64 %index.next, %n.vec
  br i1 %7, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %1
  br i1 %cmp.n, label %._crit_edge, label %vec.epilog.iter.check

vec.epilog.iter.check:                            ; preds = %middle.block
  %ind.end11 = and i64 %1, 31
  %ind.end9 = trunc i64 %n.vec to i32
  %n.vec.remaining = and i64 %1, 24
  %min.epilog.iters.check = icmp eq i64 %n.vec.remaining, 0
  br i1 %min.epilog.iters.check, label %.lr.ph.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.vec8 = and i64 %1, 8589934584
  %ind.end = trunc i64 %n.vec8 to i32
  %ind.end10 = and i64 %1, 7
  br label %vec.epilog.vector.body

vec.epilog.vector.body:                           ; preds = %vec.epilog.vector.body, %vec.epilog.ph
  %index13 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next15, %vec.epilog.vector.body ]
  %8 = and i64 %index13, 4294967288
  %9 = getelementptr inbounds i8, ptr %0, i64 %8
  store <8 x i8> zeroinitializer, ptr %9, align 1, !tbaa !5
  %index.next15 = add nuw i64 %index13, 8
  %10 = icmp eq i64 %index.next15, %n.vec8
  br i1 %10, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !12

vec.epilog.middle.block:                          ; preds = %vec.epilog.vector.body
  %cmp.n16 = icmp eq i64 %n.vec8, %1
  br i1 %cmp.n16, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %vec.epilog.middle.block, %iter.check, %vec.epilog.iter.check
  %.05.ph = phi i32 [ 0, %iter.check ], [ %ind.end9, %vec.epilog.iter.check ], [ %ind.end, %vec.epilog.middle.block ]
  %.024.ph = phi i64 [ %1, %iter.check ], [ %ind.end11, %vec.epilog.iter.check ], [ %ind.end10, %vec.epilog.middle.block ]
  %11 = add i64 %.024.ph, -1
  %xtraiter = and i64 %.024.ph, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader, %.lr.ph.prol
  %.05.prol = phi i32 [ %13, %.lr.ph.prol ], [ %.05.ph, %.lr.ph.preheader ]
  %.024.prol = phi i64 [ %12, %.lr.ph.prol ], [ %.024.ph, %.lr.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader ]
  %12 = add i64 %.024.prol, -1
  %13 = add i32 %.05.prol, 1
  %14 = zext i32 %.05.prol to i64
  %15 = getelementptr inbounds i8, ptr %0, i64 %14
  store i8 0, ptr %15, align 1, !tbaa !5
  %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.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !13

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader
  %.05.unr = phi i32 [ %.05.ph, %.lr.ph.preheader ], [ %13, %.lr.ph.prol ]
  %.024.unr = phi i64 [ %.024.ph, %.lr.ph.preheader ], [ %12, %.lr.ph.prol ]
  %16 = icmp ult i64 %11, 3
  br i1 %16, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.05 = phi i32 [ %27, %.lr.ph ], [ %.05.unr, %.lr.ph.prol.loopexit ]
  %.024 = phi i64 [ %26, %.lr.ph ], [ %.024.unr, %.lr.ph.prol.loopexit ]
  %17 = add i32 %.05, 1
  %18 = zext i32 %.05 to i64
  %19 = getelementptr inbounds i8, ptr %0, i64 %18
  store i8 0, ptr %19, align 1, !tbaa !5
  %20 = add i32 %.05, 2
  %21 = zext i32 %17 to i64
  %22 = getelementptr inbounds i8, ptr %0, i64 %21
  store i8 0, ptr %22, align 1, !tbaa !5
  %23 = add i32 %.05, 3
  %24 = zext i32 %20 to i64
  %25 = getelementptr inbounds i8, ptr %0, i64 %24
  store i8 0, ptr %25, align 1, !tbaa !5
  %26 = add i64 %.024, -4
  %27 = add i32 %.05, 4
  %28 = zext i32 %23 to i64
  %29 = getelementptr inbounds i8, ptr %0, i64 %28
  store i8 0, ptr %29, align 1, !tbaa !5
  %.not.3 = icmp eq i64 %26, 0
  br i1 %.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %vec.epilog.middle.block, %2
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: write) 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, !11}
!9 = !{!"llvm.loop.mustprogress"}
!10 = !{!"llvm.loop.isvectorized", i32 1}
!11 = !{!"llvm.loop.unroll.runtime.disable"}
!12 = distinct !{!12, !9, !10, !11}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.unroll.disable"}
!15 = distinct !{!15, !9, !10}


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