; LLVM IR from zchrissirhcz/pixel :: legacy/NaiveCNN/examples (lenet_backward)

; 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"

%struct.Lenet = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i32 }
%struct.InnerproductLayer = type { i32, i32, ptr, ptr, ptr, ptr, ptr, i8 }
%struct.array_t = type { i32, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @backward_lenet(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %41, %2
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.Lenet, ptr %11, i32 0, i32 5
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %14 = getelementptr inbounds %struct.InnerproductLayer, ptr %13, i32 0, i32 1
  %15 = load i32, ptr %14, align 4, !tbaa !13
  %16 = icmp slt i32 %10, %15
  br i1 %16, label %17, label %44

17:                                               ; preds = %9
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.Lenet, ptr %18, i32 0, i32 5
  %20 = load ptr, ptr %19, align 8, !tbaa !11
  %21 = getelementptr inbounds %struct.InnerproductLayer, ptr %20, i32 0, i32 5
  %22 = load ptr, ptr %21, align 8, !tbaa !16
  %23 = getelementptr inbounds %struct.array_t, ptr %22, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !17
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds float, ptr %24, i64 %26
  %28 = load float, ptr %27, align 4, !tbaa !19
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds float, ptr %29, i64 %31
  %33 = load float, ptr %32, align 4, !tbaa !19
  %34 = fsub float %28, %33
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.Lenet, ptr %35, i32 0, i32 6
  %37 = load ptr, ptr %36, align 8, !tbaa !21
  %38 = load i32, ptr %5, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds float, ptr %37, i64 %39
  store float %34, ptr %40, align 4, !tbaa !19
  br label %41

41:                                               ; preds = %17
  %42 = load i32, ptr %5, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !22

44:                                               ; preds = %9
  %45 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZL23backward_lenet_O5_layerP5Lenet(ptr noundef %45)
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZL23backward_lenet_S4_layerP5Lenet(ptr noundef %46)
  %47 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZL23backward_lenet_C3_layerP5Lenet(ptr noundef %47)
  %48 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZL23backward_lenet_S2_layerP5Lenet(ptr noundef %48)
  %49 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZL23backward_lenet_C1_layerP5Lenet(ptr noundef %49)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, 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: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_O5_layerP5Lenet(ptr noundef) #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_S4_layerP5Lenet(ptr noundef) #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_C3_layerP5Lenet(ptr noundef) #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_S2_layerP5Lenet(ptr noundef) #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_C1_layerP5Lenet(ptr noundef) #0

; 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 = { 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, !6, i64 40}
!12 = !{!"_ZTS5Lenet", !10, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !10, i64 64, !10, i64 68, !10, i64 72}
!13 = !{!14, !10, i64 4}
!14 = !{!"_ZTS17InnerproductLayer", !10, i64 0, !10, i64 4, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !15, i64 48}
!15 = !{!"bool", !7, i64 0}
!16 = !{!14, !6, i64 32}
!17 = !{!18, !6, i64 8}
!18 = !{!"_ZTS7array_t", !10, i64 0, !6, i64 8}
!19 = !{!20, !20, i64 0}
!20 = !{!"float", !7, i64 0}
!21 = !{!12, !6, i64 48}
!22 = distinct !{!22, !23}
!23 = !{!"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 uwtable
define dso_local void @backward_lenet(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = ptrtoint ptr %1 to i64
  %4 = getelementptr inbounds i8, ptr %0, i64 40
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i64 4
  %7 = load i32, ptr %6, align 4, !tbaa !11
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %9 = getelementptr inbounds i8, ptr %5, i64 32
  %10 = load ptr, ptr %9, align 8, !tbaa !14
  %11 = getelementptr inbounds i8, ptr %10, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !15
  %13 = getelementptr inbounds i8, ptr %0, i64 48
  %14 = load ptr, ptr %13, align 8, !tbaa !17
  %wide.trip.count = zext nneg i32 %7 to i64
  %min.iters.check = icmp ult i32 %7, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.memcheck

vector.memcheck:                                  ; preds = %.lr.ph
  %15 = ptrtoint ptr %14 to i64
  %16 = ptrtoint ptr %12 to i64
  %17 = sub i64 %15, %16
  %diff.check = icmp ult i64 %17, 32
  %18 = sub i64 %15, %3
  %diff.check15 = icmp ult i64 %18, 32
  %conflict.rdx = or i1 %diff.check, %diff.check15
  br i1 %conflict.rdx, 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 ]
  %19 = getelementptr inbounds float, ptr %12, i64 %index
  %20 = getelementptr inbounds i8, ptr %19, i64 16
  %wide.load = load <4 x float>, ptr %19, align 4, !tbaa !18
  %wide.load16 = load <4 x float>, ptr %20, align 4, !tbaa !18
  %21 = getelementptr inbounds float, ptr %1, i64 %index
  %22 = getelementptr inbounds i8, ptr %21, i64 16
  %wide.load17 = load <4 x float>, ptr %21, align 4, !tbaa !18
  %wide.load18 = load <4 x float>, ptr %22, align 4, !tbaa !18
  %23 = fsub <4 x float> %wide.load, %wide.load17
  %24 = fsub <4 x float> %wide.load16, %wide.load18
  %25 = getelementptr inbounds float, ptr %14, i64 %index
  %26 = getelementptr inbounds i8, ptr %25, i64 16
  store <4 x float> %23, ptr %25, align 4, !tbaa !18
  store <4 x float> %24, ptr %26, align 4, !tbaa !18
  %index.next = add nuw i64 %index, 8
  %27 = icmp eq i64 %index.next, %n.vec
  br i1 %27, label %middle.block, label %vector.body, !llvm.loop !20

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

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 ]
  %28 = getelementptr inbounds float, ptr %12, i64 %indvars.iv.prol
  %29 = load float, ptr %28, align 4, !tbaa !18
  %30 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.prol
  %31 = load float, ptr %30, align 4, !tbaa !18
  %32 = fsub float %29, %31
  %33 = getelementptr inbounds float, ptr %14, i64 %indvars.iv.prol
  store float %32, ptr %33, align 4, !tbaa !18
  %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 !24

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 ]
  %34 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %35 = icmp ugt i64 %34, -4
  br i1 %35, label %._crit_edge, label %scalar.ph

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 ]
  %36 = getelementptr inbounds float, ptr %12, i64 %indvars.iv
  %37 = load float, ptr %36, align 4, !tbaa !18
  %38 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %39 = load float, ptr %38, align 4, !tbaa !18
  %40 = fsub float %37, %39
  %41 = getelementptr inbounds float, ptr %14, i64 %indvars.iv
  store float %40, ptr %41, align 4, !tbaa !18
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %42 = getelementptr inbounds float, ptr %12, i64 %indvars.iv.next
  %43 = load float, ptr %42, align 4, !tbaa !18
  %44 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %45 = load float, ptr %44, align 4, !tbaa !18
  %46 = fsub float %43, %45
  %47 = getelementptr inbounds float, ptr %14, i64 %indvars.iv.next
  store float %46, ptr %47, align 4, !tbaa !18
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %48 = getelementptr inbounds float, ptr %12, i64 %indvars.iv.next.1
  %49 = load float, ptr %48, align 4, !tbaa !18
  %50 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.1
  %51 = load float, ptr %50, align 4, !tbaa !18
  %52 = fsub float %49, %51
  %53 = getelementptr inbounds float, ptr %14, i64 %indvars.iv.next.1
  store float %52, ptr %53, align 4, !tbaa !18
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %54 = getelementptr inbounds float, ptr %12, i64 %indvars.iv.next.2
  %55 = load float, ptr %54, align 4, !tbaa !18
  %56 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.2
  %57 = load float, ptr %56, align 4, !tbaa !18
  %58 = fsub float %55, %57
  %59 = getelementptr inbounds float, ptr %14, i64 %indvars.iv.next.2
  store float %58, ptr %59, align 4, !tbaa !18
  %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 !26

._crit_edge:                                      ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block, %2
  tail call void @_ZL23backward_lenet_O5_layerP5Lenet(ptr noundef nonnull %0)
  tail call void @_ZL23backward_lenet_S4_layerP5Lenet(ptr noundef nonnull %0)
  tail call void @_ZL23backward_lenet_C3_layerP5Lenet(ptr noundef nonnull %0)
  tail call void @_ZL23backward_lenet_S2_layerP5Lenet(ptr noundef nonnull %0)
  tail call void @_ZL23backward_lenet_C1_layerP5Lenet(ptr noundef nonnull %0)
  ret void
}

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_O5_layerP5Lenet(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_S4_layerP5Lenet(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_C3_layerP5Lenet(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_S2_layerP5Lenet(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23backward_lenet_C1_layerP5Lenet(ptr noundef) local_unnamed_addr #0

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" }

!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, !10, i64 40}
!6 = !{!"_ZTS5Lenet", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48, !10, i64 56, !7, i64 64, !7, i64 68, !7, i64 72}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !7, i64 4}
!12 = !{!"_ZTS17InnerproductLayer", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !13, i64 48}
!13 = !{!"bool", !8, i64 0}
!14 = !{!12, !10, i64 32}
!15 = !{!16, !10, i64 8}
!16 = !{!"_ZTS7array_t", !7, i64 0, !10, i64 8}
!17 = !{!6, !10, i64 48}
!18 = !{!19, !19, i64 0}
!19 = !{!"float", !8, i64 0}
!20 = distinct !{!20, !21, !22, !23}
!21 = !{!"llvm.loop.mustprogress"}
!22 = !{!"llvm.loop.isvectorized", i32 1}
!23 = !{!"llvm.loop.unroll.runtime.disable"}
!24 = distinct !{!24, !25}
!25 = !{!"llvm.loop.unroll.disable"}
!26 = distinct !{!26, !21, !22}


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