; LLVM IR from ox-vgg/vise :: src/search_engine/relja_retrival/external/KMCode_relja/descriptor/PcaDescriptor_648abb23 (Z7NormvecPfj)

; 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: mustprogress uwtable
define dso_local void @_Z7NormvecPfj(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca float, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  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) #3
  store float 0.000000e+00, ptr %5, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %22, %2
  %9 = load i32, ptr %6, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp ult i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %25

13:                                               ; preds = %8
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = zext i32 %15 to i64
  %17 = getelementptr inbounds float, ptr %14, i64 %16
  %18 = load float, ptr %17, align 4, !tbaa !11
  %19 = call noundef float @_ZSt4fabsf(float noundef %18)
  %20 = load float, ptr %5, align 4, !tbaa !11
  %21 = fadd float %20, %19
  store float %21, ptr %5, align 4, !tbaa !11
  br label %22

22:                                               ; preds = %13
  %23 = load i32, ptr %6, align 4, !tbaa !9
  %24 = add i32 %23, 1
  store i32 %24, ptr %6, align 4, !tbaa !9
  br label %8, !llvm.loop !13

25:                                               ; preds = %12
  %26 = load i32, ptr %4, align 4, !tbaa !9
  %27 = uitofp i32 %26 to float
  %28 = load float, ptr %5, align 4, !tbaa !11
  %29 = fdiv float %28, %27
  store float %29, ptr %5, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %30

30:                                               ; preds = %50, %25
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = load i32, ptr %4, align 4, !tbaa !9
  %33 = icmp ult i32 %31, %32
  br i1 %33, label %35, label %34

34:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %53

35:                                               ; preds = %30
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = zext i32 %37 to i64
  %39 = getelementptr inbounds float, ptr %36, i64 %38
  %40 = load float, ptr %39, align 4, !tbaa !11
  %41 = load float, ptr %5, align 4, !tbaa !11
  %42 = fdiv float %40, %41
  %43 = fpext float %42 to double
  %44 = fmul double %43, 1.000000e+02
  %45 = fptrunc double %44 to float
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = zext i32 %47 to i64
  %49 = getelementptr inbounds float, ptr %46, i64 %48
  store float %45, ptr %49, align 4, !tbaa !11
  br label %50

50:                                               ; preds = %35
  %51 = load i32, ptr %7, align 4, !tbaa !9
  %52 = add i32 %51, 1
  store i32 %52, ptr %7, align 4, !tbaa !9
  br label %30, !llvm.loop !15

53:                                               ; preds = %34
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZSt4fabsf(float noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress 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 = { inlinehint 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 #3 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !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: mustprogress nounwind uwtable
define dso_local void @_Z7NormvecPfj(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge23, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext i32 %1 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph
  %3 = uitofp i32 %1 to float
  %4 = fdiv float %12, %3
  br i1 %.not, label %._crit_edge23, label %.lr.ph22.preheader

.lr.ph22.preheader:                               ; preds = %._crit_edge
  %wide.trip.count29 = zext i32 %1 to i64
  %min.iters.check = icmp ult i32 %1, 4
  br i1 %min.iters.check, label %.lr.ph22.preheader32, label %vector.ph

.lr.ph22.preheader32:                             ; preds = %middle.block, %.lr.ph22.preheader
  %indvars.iv26.ph = phi i64 [ 0, %.lr.ph22.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph22

vector.ph:                                        ; preds = %.lr.ph22.preheader
  %n.vec = and i64 %wide.trip.count, 4294967292
  %broadcast.splatinsert = insertelement <4 x float> poison, float %4, i64 0
  %broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %5 = getelementptr inbounds float, ptr %0, i64 %index
  %wide.load = load <4 x float>, ptr %5, align 4, !tbaa !5
  %6 = fdiv <4 x float> %wide.load, %broadcast.splat
  %7 = fmul <4 x float> %6, <float 1.000000e+02, float 1.000000e+02, float 1.000000e+02, float 1.000000e+02>
  store <4 x float> %7, ptr %5, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %8 = icmp eq i64 %index.next, %n.vec
  br i1 %8, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge23, label %.lr.ph22.preheader32

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.01618 = phi float [ 0.000000e+00, %.lr.ph.preheader ], [ %12, %.lr.ph ]
  %9 = getelementptr inbounds float, ptr %0, i64 %indvars.iv
  %10 = load float, ptr %9, align 4, !tbaa !5
  %11 = tail call noundef float @_ZSt4fabsf(float noundef %10)
  %12 = fadd float %.01618, %11
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge23:                                    ; preds = %.lr.ph22, %middle.block, %2, %._crit_edge
  ret void

.lr.ph22:                                         ; preds = %.lr.ph22.preheader32, %.lr.ph22
  %indvars.iv26 = phi i64 [ %indvars.iv.next27, %.lr.ph22 ], [ %indvars.iv26.ph, %.lr.ph22.preheader32 ]
  %13 = getelementptr inbounds float, ptr %0, i64 %indvars.iv26
  %14 = load float, ptr %13, align 4, !tbaa !5
  %15 = fdiv float %14, %4
  %16 = fmul float %15, 1.000000e+02
  store float %16, ptr %13, align 4, !tbaa !5
  %indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 1
  %exitcond30.not = icmp eq i64 %indvars.iv.next27, %wide.trip.count29
  br i1 %exitcond30.not, label %._crit_edge23, label %.lr.ph22, !llvm.loop !14
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZSt4fabsf(float noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { inlinehint 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" }

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


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