; LLVM IR from sympiler/nasoq :: nasoq_driver.ll (ZN7sym_lib17copy_vector_denseEmmPKdPd)

; 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: mustprogress nounwind uwtable
define dso_local void @_ZN7sym_lib17copy_vector_denseEmmPKdPd(i64 noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  store i64 %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %10 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %10, ptr %9, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %24, %4
  %12 = load i64, ptr %9, align 8, !tbaa !5
  %13 = load i64, ptr %6, align 8, !tbaa !5
  %14 = icmp ult i64 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %27

16:                                               ; preds = %11
  %17 = load ptr, ptr %7, align 8, !tbaa !9
  %18 = load i64, ptr %9, align 8, !tbaa !5
  %19 = getelementptr inbounds double, ptr %17, i64 %18
  %20 = load double, ptr %19, align 8, !tbaa !11
  %21 = load ptr, ptr %8, align 8, !tbaa !9
  %22 = load i64, ptr %9, align 8, !tbaa !5
  %23 = getelementptr inbounds double, ptr %21, i64 %22
  store double %20, ptr %23, align 8, !tbaa !11
  br label %24

24:                                               ; preds = %16
  %25 = load i64, ptr %9, align 8, !tbaa !5
  %26 = add i64 %25, 1
  store i64 %26, ptr %9, align 8, !tbaa !5
  br label %11, !llvm.loop !13

27:                                               ; preds = %15
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 void @_ZN7sym_lib17copy_vector_denseEmmPKdPd(i64 noundef %0, i64 noundef %1, ptr nocapture noundef readonly %2, ptr nocapture noundef writeonly %3) local_unnamed_addr #0 {
  %5 = icmp ult i64 %0, %1
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %6 = ptrtoint ptr %3 to i64
  %7 = ptrtoint ptr %2 to i64
  %8 = sub i64 %1, %0
  %min.iters.check = icmp ult i64 %8, 6
  %9 = sub i64 %6, %7
  %diff.check = icmp ult i64 %9, 32
  %or.cond = or i1 %min.iters.check, %diff.check
  br i1 %or.cond, label %.lr.ph.preheader10, label %vector.ph

.lr.ph.preheader10:                               ; preds = %middle.block, %.lr.ph.preheader
  %.07.ph = phi i64 [ %0, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  %10 = sub i64 %1, %.07.ph
  %xtraiter = and i64 %10, 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.preheader10, %.lr.ph.prol
  %.07.prol = phi i64 [ %14, %.lr.ph.prol ], [ %.07.ph, %.lr.ph.preheader10 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader10 ]
  %11 = getelementptr inbounds double, ptr %2, i64 %.07.prol
  %12 = load double, ptr %11, align 8, !tbaa !5
  %13 = getelementptr inbounds double, ptr %3, i64 %.07.prol
  store double %12, ptr %13, align 8, !tbaa !5
  %14 = add nuw i64 %.07.prol, 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.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !9

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader10
  %.07.unr = phi i64 [ %.07.ph, %.lr.ph.preheader10 ], [ %14, %.lr.ph.prol ]
  %15 = sub i64 %.07.ph, %1
  %16 = icmp ugt i64 %15, -4
  br i1 %16, label %._crit_edge, label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %8, -4
  %ind.end = add i64 %n.vec, %0
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = add i64 %index, %0
  %17 = getelementptr inbounds double, ptr %2, i64 %offset.idx
  %18 = getelementptr inbounds i8, ptr %17, i64 16
  %wide.load = load <2 x double>, ptr %17, align 8, !tbaa !5
  %wide.load9 = load <2 x double>, ptr %18, align 8, !tbaa !5
  %19 = getelementptr inbounds double, ptr %3, i64 %offset.idx
  %20 = getelementptr inbounds i8, ptr %19, i64 16
  store <2 x double> %wide.load, ptr %19, align 8, !tbaa !5
  store <2 x double> %wide.load9, ptr %20, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %21 = icmp eq i64 %index.next, %n.vec
  br i1 %21, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %8, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader10

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %4
  ret void

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.07 = phi i64 [ %37, %.lr.ph ], [ %.07.unr, %.lr.ph.prol.loopexit ]
  %22 = getelementptr inbounds double, ptr %2, i64 %.07
  %23 = load double, ptr %22, align 8, !tbaa !5
  %24 = getelementptr inbounds double, ptr %3, i64 %.07
  store double %23, ptr %24, align 8, !tbaa !5
  %25 = add nuw i64 %.07, 1
  %26 = getelementptr inbounds double, ptr %2, i64 %25
  %27 = load double, ptr %26, align 8, !tbaa !5
  %28 = getelementptr inbounds double, ptr %3, i64 %25
  store double %27, ptr %28, align 8, !tbaa !5
  %29 = add nuw i64 %.07, 2
  %30 = getelementptr inbounds double, ptr %2, i64 %29
  %31 = load double, ptr %30, align 8, !tbaa !5
  %32 = getelementptr inbounds double, ptr %3, i64 %29
  store double %31, ptr %32, align 8, !tbaa !5
  %33 = add nuw i64 %.07, 3
  %34 = getelementptr inbounds double, ptr %2, i64 %33
  %35 = load double, ptr %34, align 8, !tbaa !5
  %36 = getelementptr inbounds double, ptr %3, i64 %33
  store double %35, ptr %36, align 8, !tbaa !5
  %37 = add nuw i64 %.07, 4
  %exitcond.not.3 = icmp eq i64 %37, %1
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !15
}

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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.unroll.disable"}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12, !13}


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