; LLVM IR from HRI-EU/Rcs :: src/RcsCore (Rcs_VecNd)

; 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 @VecNd_reverseSelf(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %39, %2
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = udiv i32 %9, 2
  %11 = icmp ult i32 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %42

13:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = zext i32 %15 to i64
  %17 = getelementptr inbounds double, ptr %14, i64 %16
  %18 = load double, ptr %17, align 8, !tbaa !11
  store double %18, ptr %6, align 8, !tbaa !11
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = sub i32 %20, %21
  %23 = sub i32 %22, 1
  %24 = zext i32 %23 to i64
  %25 = getelementptr inbounds double, ptr %19, i64 %24
  %26 = load double, ptr %25, align 8, !tbaa !11
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds double, ptr %27, i64 %29
  store double %26, ptr %30, align 8, !tbaa !11
  %31 = load double, ptr %6, align 8, !tbaa !11
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = load i32, ptr %4, align 4, !tbaa !9
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = sub i32 %33, %34
  %36 = sub i32 %35, 1
  %37 = zext i32 %36 to i64
  %38 = getelementptr inbounds double, ptr %32, i64 %37
  store double %31, ptr %38, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %39

39:                                               ; preds = %13
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = add i32 %40, 1
  store i32 %41, ptr %5, align 4, !tbaa !9
  br label %7, !llvm.loop !13

42:                                               ; preds = %12
  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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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 @VecNd_reverseSelf(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not = icmp ult i32 %1, 2
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %3 = lshr i32 %1, 1
  %wide.trip.count = zext nneg i32 %3 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %5 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.unr
  %6 = load double, ptr %5, align 8, !tbaa !5
  %7 = trunc nuw nsw i64 %indvars.iv.unr to i32
  %8 = xor i32 %7, -1
  %9 = add i32 %8, %1
  %10 = zext i32 %9 to i64
  %11 = getelementptr inbounds double, ptr %0, i64 %10
  %12 = load double, ptr %11, align 8, !tbaa !5
  store double %12, ptr %5, align 8, !tbaa !5
  store double %6, ptr %11, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %2
  ret void

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %13 = getelementptr inbounds double, ptr %0, i64 %indvars.iv
  %14 = load double, ptr %13, align 8, !tbaa !5
  %15 = trunc nuw nsw i64 %indvars.iv to i32
  %16 = xor i32 %15, -1
  %17 = add i32 %16, %1
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds double, ptr %0, i64 %18
  %20 = load double, ptr %19, align 8, !tbaa !5
  store double %20, ptr %13, align 8, !tbaa !5
  store double %14, ptr %19, align 8, !tbaa !5
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %21 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next
  %22 = load double, ptr %21, align 8, !tbaa !5
  %23 = trunc nuw nsw i64 %indvars.iv.next to i32
  %24 = xor i32 %23, -1
  %25 = add i32 %24, %1
  %26 = zext i32 %25 to i64
  %27 = getelementptr inbounds double, ptr %0, i64 %26
  %28 = load double, ptr %27, align 8, !tbaa !5
  store double %28, ptr %21, align 8, !tbaa !5
  store double %22, ptr %27, align 8, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9
}

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.mustprogress"}


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