; LLVM IR from ox-vgg/vise :: src/search_engine/relja_retrival/external/KMCode_relja/descriptor/CornerDescrip_7792fdff (ZN16CornerDescriptor10changeBaseEPf)

; 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"

%class.CornerDescriptor = type <{ %class.Corner, ptr, i32, float, i64, i32, [4 x i8] }>
%class.Corner = type { i32, float, float, float, float, float, float, float, float, float, float, float, float, float, float, float, float, i32, i32, float, i32, i32 }

; 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 @_ZN16CornerDescriptor10changeBaseEPf(ptr noundef nonnull align 8 dereferenceable(116) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  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 = %31, %2
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = getelementptr inbounds %class.CornerDescriptor, ptr %6, i32 0, i32 2
  %10 = load i32, ptr %9, align 8, !tbaa !11
  %11 = icmp slt 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 %34

13:                                               ; preds = %7
  %14 = getelementptr inbounds %class.CornerDescriptor, ptr %6, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !16
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds float, ptr %15, i64 %17
  %19 = load float, ptr %18, align 4, !tbaa !17
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds float, ptr %20, i64 %22
  %24 = load float, ptr %23, align 4, !tbaa !17
  %25 = fmul float %19, %24
  %26 = getelementptr inbounds %class.CornerDescriptor, ptr %6, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !16
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds float, ptr %27, i64 %29
  store float %25, ptr %30, align 4, !tbaa !17
  br label %31

31:                                               ; preds = %13
  %32 = load i32, ptr %5, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %5, align 4, !tbaa !9
  br label %7, !llvm.loop !18

34:                                               ; preds = %12
  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 = !{!"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, !10, i64 96}
!12 = !{!"_ZTS16CornerDescriptor", !13, i64 0, !6, i64 88, !10, i64 96, !14, i64 100, !15, i64 104, !10, i64 112}
!13 = !{!"_ZTS6Corner", !10, i64 0, !14, i64 4, !14, i64 8, !14, i64 12, !14, i64 16, !14, i64 20, !14, i64 24, !14, i64 28, !14, i64 32, !14, i64 36, !14, i64 40, !14, i64 44, !14, i64 48, !14, i64 52, !14, i64 56, !14, i64 60, !14, i64 64, !10, i64 68, !10, i64 72, !14, i64 76, !10, i64 80, !10, i64 84}
!14 = !{!"float", !7, i64 0}
!15 = !{!"long", !7, i64 0}
!16 = !{!12, !6, i64 88}
!17 = !{!14, !14, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"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(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN16CornerDescriptor10changeBaseEPf(ptr nocapture noundef nonnull readonly align 8 dereferenceable(116) %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 96
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 88
  %7 = load ptr, ptr %6, align 8, !tbaa !14
  %wide.trip.count = zext nneg i32 %4 to i64
  %min.iters.check = icmp ult i32 %4, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.memcheck

scalar.ph.preheader:                              ; preds = %middle.block, %vector.memcheck, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %wide.trip.count, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %scalar.ph.prol.loopexit, label %scalar.ph.prol

scalar.ph.prol:                                   ; preds = %scalar.ph.preheader, %scalar.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %scalar.ph.prol ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %scalar.ph.prol ], [ 0, %scalar.ph.preheader ]
  %8 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.prol
  %9 = load float, ptr %8, align 4, !tbaa !15
  %10 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.prol
  %11 = load float, ptr %10, align 4, !tbaa !15
  %12 = fmul float %9, %11
  store float %12, ptr %8, align 4, !tbaa !15
  %indvars.iv.next.prol = add nuw nsw i64 %indvars.iv.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 %scalar.ph.prol.loopexit, label %scalar.ph.prol, !llvm.loop !16

scalar.ph.prol.loopexit:                          ; preds = %scalar.ph.prol, %scalar.ph.preheader
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %scalar.ph.preheader ], [ %indvars.iv.next.prol, %scalar.ph.prol ]
  %13 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %14 = icmp ugt i64 %13, -4
  br i1 %14, label %._crit_edge, label %scalar.ph

vector.memcheck:                                  ; preds = %.lr.ph
  %15 = shl nuw nsw i64 %wide.trip.count, 2
  %scevgep = getelementptr i8, ptr %7, i64 %15
  %scevgep8 = getelementptr i8, ptr %1, i64 %15
  %bound0 = icmp ult ptr %7, %scevgep8
  %bound1 = icmp ugt ptr %scevgep, %1
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %wide.trip.count, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %16 = getelementptr inbounds float, ptr %7, i64 %index
  %17 = getelementptr inbounds i8, ptr %16, i64 16
  %wide.load = load <4 x float>, ptr %16, align 4, !tbaa !15, !alias.scope !18, !noalias !21
  %wide.load9 = load <4 x float>, ptr %17, align 4, !tbaa !15, !alias.scope !18, !noalias !21
  %18 = getelementptr inbounds float, ptr %1, i64 %index
  %19 = getelementptr inbounds i8, ptr %18, i64 16
  %wide.load10 = load <4 x float>, ptr %18, align 4, !tbaa !15, !alias.scope !21
  %wide.load11 = load <4 x float>, ptr %19, align 4, !tbaa !15, !alias.scope !21
  %20 = fmul <4 x float> %wide.load, %wide.load10
  %21 = fmul <4 x float> %wide.load9, %wide.load11
  store <4 x float> %20, ptr %16, align 4, !tbaa !15, !alias.scope !18, !noalias !21
  store <4 x float> %21, ptr %17, align 4, !tbaa !15, !alias.scope !18, !noalias !21
  %index.next = add nuw i64 %index, 8
  %22 = icmp eq i64 %index.next, %n.vec
  br i1 %22, label %middle.block, label %vector.body, !llvm.loop !23

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

._crit_edge:                                      ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block, %2
  ret void

scalar.ph:                                        ; preds = %scalar.ph.prol.loopexit, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %scalar.ph ], [ %indvars.iv.unr, %scalar.ph.prol.loopexit ]
  %23 = getelementptr inbounds float, ptr %7, i64 %indvars.iv
  %24 = load float, ptr %23, align 4, !tbaa !15
  %25 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %26 = load float, ptr %25, align 4, !tbaa !15
  %27 = fmul float %24, %26
  store float %27, ptr %23, align 4, !tbaa !15
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.next
  %29 = load float, ptr %28, align 4, !tbaa !15
  %30 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %31 = load float, ptr %30, align 4, !tbaa !15
  %32 = fmul float %29, %31
  store float %32, ptr %28, align 4, !tbaa !15
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %33 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.next.1
  %34 = load float, ptr %33, align 4, !tbaa !15
  %35 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.1
  %36 = load float, ptr %35, align 4, !tbaa !15
  %37 = fmul float %34, %36
  store float %37, ptr %33, align 4, !tbaa !15
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %38 = getelementptr inbounds float, ptr %7, i64 %indvars.iv.next.2
  %39 = load float, ptr %38, align 4, !tbaa !15
  %40 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.2
  %41 = load float, ptr %40, align 4, !tbaa !15
  %42 = fmul float %39, %41
  store float %42, ptr %38, align 4, !tbaa !15
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %wide.trip.count
  br i1 %exitcond.not.3, label %._crit_edge, label %scalar.ph, !llvm.loop !27
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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, !8, i64 96}
!6 = !{!"_ZTS16CornerDescriptor", !7, i64 0, !12, i64 88, !8, i64 96, !11, i64 100, !13, i64 104, !8, i64 112}
!7 = !{!"_ZTS6Corner", !8, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !11, i64 28, !11, i64 32, !11, i64 36, !11, i64 40, !11, i64 44, !11, i64 48, !11, i64 52, !11, i64 56, !11, i64 60, !11, i64 64, !8, i64 68, !8, i64 72, !11, i64 76, !8, i64 80, !8, i64 84}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"float", !9, i64 0}
!12 = !{!"any pointer", !9, i64 0}
!13 = !{!"long", !9, i64 0}
!14 = !{!6, !12, i64 88}
!15 = !{!11, !11, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.unroll.disable"}
!18 = !{!19}
!19 = distinct !{!19, !20}
!20 = distinct !{!20, !"LVerDomain"}
!21 = !{!22}
!22 = distinct !{!22, !20}
!23 = distinct !{!23, !24, !25, !26}
!24 = !{!"llvm.loop.mustprogress"}
!25 = !{!"llvm.loop.isvectorized", i32 1}
!26 = !{!"llvm.loop.unroll.runtime.disable"}
!27 = distinct !{!27, !24, !25}


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