; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl (aib)

; 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 @vl_aib_normalize_P(ptr noundef %0, i32 noundef %1) #0 {
  %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
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store double 0.000000e+00, ptr %6, align 8, !tbaa !11
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %19, %2
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = icmp ult i32 %8, %9
  br i1 %10, label %11, label %22

11:                                               ; preds = %7
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = zext i32 %13 to i64
  %15 = getelementptr inbounds double, ptr %12, i64 %14
  %16 = load double, ptr %15, align 8, !tbaa !11
  %17 = load double, ptr %6, align 8, !tbaa !11
  %18 = fadd double %17, %16
  store double %18, ptr %6, align 8, !tbaa !11
  br label %19

19:                                               ; preds = %11
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = add i32 %20, 1
  store i32 %21, ptr %5, align 4, !tbaa !9
  br label %7, !llvm.loop !13

22:                                               ; preds = %7
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %35, %22
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = load i32, ptr %4, align 4, !tbaa !9
  %26 = icmp ult i32 %24, %25
  br i1 %26, label %27, label %38

27:                                               ; preds = %23
  %28 = load double, ptr %6, align 8, !tbaa !11
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = zext i32 %30 to i64
  %32 = getelementptr inbounds double, ptr %29, i64 %31
  %33 = load double, ptr %32, align 8, !tbaa !11
  %34 = fdiv double %33, %28
  store double %34, ptr %32, align 8, !tbaa !11
  br label %35

35:                                               ; preds = %27
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = add i32 %36, 1
  store i32 %37, ptr %5, align 4, !tbaa !9
  br label %23, !llvm.loop !15

38:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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 @vl_aib_normalize_P(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext i32 %1 to i64
  %xtraiter = and i64 %wide.trip.count, 7
  %3 = icmp ult i32 %1, 8
  br i1 %3, label %.preheader.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 4294967288
  br label %.lr.ph

.preheader.unr-lcssa:                             ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi double [ poison, %.lr.ph.preheader ], [ %33, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.7, %.lr.ph ]
  %.014.unr = phi double [ 0.000000e+00, %.lr.ph.preheader ], [ %33, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.preheader, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %.preheader.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %.preheader.unr-lcssa ]
  %.014.epil = phi double [ %6, %.lr.ph.epil ], [ %.014.unr, %.preheader.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %.preheader.unr-lcssa ]
  %4 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.epil
  %5 = load double, ptr %4, align 8, !tbaa !5
  %6 = fadd double %.014.epil, %5
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %.preheader, label %.lr.ph.epil, !llvm.loop !9

.preheader:                                       ; preds = %.lr.ph.epil, %.preheader.unr-lcssa
  %.lcssa = phi double [ %.lcssa.ph, %.preheader.unr-lcssa ], [ %6, %.lr.ph.epil ]
  br i1 %.not, label %._crit_edge, label %.lr.ph16.preheader

.lr.ph16.preheader:                               ; preds = %.preheader
  %wide.trip.count22 = zext i32 %1 to i64
  %min.iters.check = icmp eq i32 %1, 1
  br i1 %min.iters.check, label %.lr.ph16.preheader25, label %vector.ph

.lr.ph16.preheader25:                             ; preds = %middle.block, %.lr.ph16.preheader
  %indvars.iv19.ph = phi i64 [ 0, %.lr.ph16.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph16

vector.ph:                                        ; preds = %.lr.ph16.preheader
  %n.vec = and i64 %wide.trip.count, 4294967294
  %broadcast.splatinsert = insertelement <2 x double> poison, double %.lcssa, i64 0
  %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %7 = getelementptr inbounds double, ptr %0, i64 %index
  %wide.load = load <2 x double>, ptr %7, align 8, !tbaa !5
  %8 = fdiv <2 x double> %wide.load, %broadcast.splat
  store <2 x double> %8, ptr %7, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 2
  %9 = icmp eq i64 %index.next, %n.vec
  br i1 %9, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph16.preheader25

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.7, %.lr.ph ]
  %.014 = phi double [ 0.000000e+00, %.lr.ph.preheader.new ], [ %33, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.7, %.lr.ph ]
  %10 = getelementptr inbounds double, ptr %0, i64 %indvars.iv
  %11 = load double, ptr %10, align 8, !tbaa !5
  %12 = fadd double %.014, %11
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %13 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next
  %14 = load double, ptr %13, align 8, !tbaa !5
  %15 = fadd double %12, %14
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %16 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.1
  %17 = load double, ptr %16, align 8, !tbaa !5
  %18 = fadd double %15, %17
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %19 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.2
  %20 = load double, ptr %19, align 8, !tbaa !5
  %21 = fadd double %18, %20
  %indvars.iv.next.3 = or disjoint i64 %indvars.iv, 4
  %22 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.3
  %23 = load double, ptr %22, align 8, !tbaa !5
  %24 = fadd double %21, %23
  %indvars.iv.next.4 = or disjoint i64 %indvars.iv, 5
  %25 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.4
  %26 = load double, ptr %25, align 8, !tbaa !5
  %27 = fadd double %24, %26
  %indvars.iv.next.5 = or disjoint i64 %indvars.iv, 6
  %28 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.5
  %29 = load double, ptr %28, align 8, !tbaa !5
  %30 = fadd double %27, %29
  %indvars.iv.next.6 = or disjoint i64 %indvars.iv, 7
  %31 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.6
  %32 = load double, ptr %31, align 8, !tbaa !5
  %33 = fadd double %30, %32
  %indvars.iv.next.7 = add nuw nsw i64 %indvars.iv, 8
  %niter.next.7 = add i64 %niter, 8
  %niter.ncmp.7 = icmp eq i64 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %.preheader.unr-lcssa, label %.lr.ph, !llvm.loop !15

.lr.ph16:                                         ; preds = %.lr.ph16.preheader25, %.lr.ph16
  %indvars.iv19 = phi i64 [ %indvars.iv.next20, %.lr.ph16 ], [ %indvars.iv19.ph, %.lr.ph16.preheader25 ]
  %34 = getelementptr inbounds double, ptr %0, i64 %indvars.iv19
  %35 = load double, ptr %34, align 8, !tbaa !5
  %36 = fdiv double %35, %.lcssa
  store double %36, ptr %34, align 8, !tbaa !5
  %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
  %exitcond23.not = icmp eq i64 %indvars.iv.next20, %wide.trip.count22
  br i1 %exitcond23.not, label %._crit_edge, label %.lr.ph16, !llvm.loop !16

._crit_edge:                                      ; preds = %.lr.ph16, %middle.block, %2, %.preheader
  ret void
}

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}
!16 = distinct !{!16, !12, !14, !13}


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