; LLVM IR from tfhe/spqlios-arithmetic :: spqlios/arithmetic (vec_rnx_arithmetic)

; 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: nounwind uwtable
define dso_local void @rnx_sub_ref(i64 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca i64, align 8
  %6 = alloca ptr, 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 ptr %1, ptr %6, align 8, !tbaa !9
  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
  store i64 0, ptr %9, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %28, %4
  %11 = load i64, ptr %9, align 8, !tbaa !5
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = icmp ult i64 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %31

15:                                               ; preds = %10
  %16 = load ptr, ptr %7, align 8, !tbaa !9
  %17 = load i64, ptr %9, align 8, !tbaa !5
  %18 = getelementptr inbounds double, ptr %16, i64 %17
  %19 = load double, ptr %18, align 8, !tbaa !11
  %20 = load ptr, ptr %8, align 8, !tbaa !9
  %21 = load i64, ptr %9, align 8, !tbaa !5
  %22 = getelementptr inbounds double, ptr %20, i64 %21
  %23 = load double, ptr %22, align 8, !tbaa !11
  %24 = fsub double %19, %23
  %25 = load ptr, ptr %6, align 8, !tbaa !9
  %26 = load i64, ptr %9, align 8, !tbaa !5
  %27 = getelementptr inbounds double, ptr %25, i64 %26
  store double %24, ptr %27, align 8, !tbaa !11
  br label %28

28:                                               ; preds = %15
  %29 = load i64, ptr %9, align 8, !tbaa !5
  %30 = add i64 %29, 1
  store i64 %30, ptr %9, align 8, !tbaa !5
  br label %10, !llvm.loop !13

31:                                               ; preds = %14
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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/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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @rnx_sub_ref(i64 noundef %0, ptr nocapture noundef writeonly %1, ptr nocapture noundef readonly %2, ptr nocapture noundef readonly %3) local_unnamed_addr #0 {
  %5 = ptrtoint ptr %3 to i64
  %6 = ptrtoint ptr %2 to i64
  %7 = ptrtoint ptr %1 to i64
  %.not = icmp eq i64 %0, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %4
  %min.iters.check = icmp ult i64 %0, 8
  br i1 %min.iters.check, label %.lr.ph.preheader13, label %vector.memcheck

.lr.ph.preheader13:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.08.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %0, 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.preheader13, %.lr.ph.prol
  %.08.prol = phi i64 [ %14, %.lr.ph.prol ], [ %.08.ph, %.lr.ph.preheader13 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader13 ]
  %8 = getelementptr inbounds double, ptr %2, i64 %.08.prol
  %9 = load double, ptr %8, align 8, !tbaa !5
  %10 = getelementptr inbounds double, ptr %3, i64 %.08.prol
  %11 = load double, ptr %10, align 8, !tbaa !5
  %12 = fsub double %9, %11
  %13 = getelementptr inbounds double, ptr %1, i64 %.08.prol
  store double %12, ptr %13, align 8, !tbaa !5
  %14 = add nuw i64 %.08.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.preheader13
  %.08.unr = phi i64 [ %.08.ph, %.lr.ph.preheader13 ], [ %14, %.lr.ph.prol ]
  %15 = sub i64 %.08.ph, %0
  %16 = icmp ugt i64 %15, -4
  br i1 %16, label %._crit_edge, label %.lr.ph

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %17 = sub i64 %7, %6
  %diff.check = icmp ult i64 %17, 32
  %18 = sub i64 %7, %5
  %diff.check9 = icmp ult i64 %18, 32
  %conflict.rdx = or i1 %diff.check, %diff.check9
  br i1 %conflict.rdx, label %.lr.ph.preheader13, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %0, -4
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %19 = getelementptr inbounds double, ptr %2, i64 %index
  %20 = getelementptr inbounds i8, ptr %19, i64 16
  %wide.load = load <2 x double>, ptr %19, align 8, !tbaa !5
  %wide.load10 = load <2 x double>, ptr %20, align 8, !tbaa !5
  %21 = getelementptr inbounds double, ptr %3, i64 %index
  %22 = getelementptr inbounds i8, ptr %21, i64 16
  %wide.load11 = load <2 x double>, ptr %21, align 8, !tbaa !5
  %wide.load12 = load <2 x double>, ptr %22, align 8, !tbaa !5
  %23 = fsub <2 x double> %wide.load, %wide.load11
  %24 = fsub <2 x double> %wide.load10, %wide.load12
  %25 = getelementptr inbounds double, ptr %1, i64 %index
  %26 = getelementptr inbounds i8, ptr %25, i64 16
  store <2 x double> %23, ptr %25, align 8, !tbaa !5
  store <2 x double> %24, ptr %26, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %27 = icmp eq i64 %index.next, %n.vec
  br i1 %27, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %0
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader13

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

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.08 = phi i64 [ %55, %.lr.ph ], [ %.08.unr, %.lr.ph.prol.loopexit ]
  %28 = getelementptr inbounds double, ptr %2, i64 %.08
  %29 = load double, ptr %28, align 8, !tbaa !5
  %30 = getelementptr inbounds double, ptr %3, i64 %.08
  %31 = load double, ptr %30, align 8, !tbaa !5
  %32 = fsub double %29, %31
  %33 = getelementptr inbounds double, ptr %1, i64 %.08
  store double %32, ptr %33, align 8, !tbaa !5
  %34 = add nuw i64 %.08, 1
  %35 = getelementptr inbounds double, ptr %2, i64 %34
  %36 = load double, ptr %35, align 8, !tbaa !5
  %37 = getelementptr inbounds double, ptr %3, i64 %34
  %38 = load double, ptr %37, align 8, !tbaa !5
  %39 = fsub double %36, %38
  %40 = getelementptr inbounds double, ptr %1, i64 %34
  store double %39, ptr %40, align 8, !tbaa !5
  %41 = add nuw i64 %.08, 2
  %42 = getelementptr inbounds double, ptr %2, i64 %41
  %43 = load double, ptr %42, align 8, !tbaa !5
  %44 = getelementptr inbounds double, ptr %3, i64 %41
  %45 = load double, ptr %44, align 8, !tbaa !5
  %46 = fsub double %43, %45
  %47 = getelementptr inbounds double, ptr %1, i64 %41
  store double %46, ptr %47, align 8, !tbaa !5
  %48 = add nuw i64 %.08, 3
  %49 = getelementptr inbounds double, ptr %2, i64 %48
  %50 = load double, ptr %49, align 8, !tbaa !5
  %51 = getelementptr inbounds double, ptr %3, i64 %48
  %52 = load double, ptr %51, align 8, !tbaa !5
  %53 = fsub double %50, %52
  %54 = getelementptr inbounds double, ptr %1, i64 %48
  store double %53, ptr %54, align 8, !tbaa !5
  %55 = add nuw i64 %.08, 4
  %exitcond.not.3 = icmp eq i64 %55, %0
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !15
}

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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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