; LLVM IR from zchrissirhcz/pixel :: legacy/NaiveCNN/src (naive_cnn)

; 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.NcNet = type { i32, ptr, i32, ptr, ptr, ptr }
%struct.NcLayer = type { i32, ptr, ptr, ptr, ptr, ptr, ptr }

@stderr = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [18 x i8], align 1

; 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
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

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

5:                                                ; preds = %43, %1
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.NcNet, ptr %7, i32 0, i32 0
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = icmp slt i32 %6, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %46

12:                                               ; preds = %5
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.NcNet, ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = load i32, ptr %4, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds ptr, ptr %15, i64 %17
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  store ptr %19, ptr %3, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %12
  %21 = load ptr, ptr @stderr, align 8, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.NcNet, ptr %23, i32 0, i32 0
  %25 = load i32, ptr %24, align 8, !tbaa !11
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %21, ptr noundef @.str.3, i32 noundef %22, i32 noundef %25) #3
  %27 = load ptr, ptr @stderr, align 8, !tbaa !5
  %28 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %27, ptr noundef @.str.2) #3
  br label %29

29:                                               ; preds = %20
  br label %30

30:                                               ; preds = %29
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.NcLayer, ptr %31, i32 0, i32 3
  %33 = load ptr, ptr %32, align 8, !tbaa !14
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.NcLayer, ptr %34, i32 0, i32 1
  %36 = load ptr, ptr %35, align 8, !tbaa !16
  %37 = load ptr, ptr %3, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.NcLayer, ptr %37, i32 0, i32 5
  %39 = load ptr, ptr %38, align 8, !tbaa !17
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.NcLayer, ptr %40, i32 0, i32 6
  %42 = load ptr, ptr %41, align 8, !tbaa !18
  call void %33(ptr noundef %36, ptr noundef %39, ptr noundef %42)
  br label %43

43:                                               ; preds = %30
  %44 = load i32, ptr %4, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %4, align 4, !tbaa !9
  br label %5, !llvm.loop !19

46:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind "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 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"NcNet", !10, i64 0, !6, i64 8, !10, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!13 = !{!12, !6, i64 8}
!14 = !{!15, !6, i64 24}
!15 = !{!"NcLayer", !10, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48}
!16 = !{!15, !6, i64 8}
!17 = !{!15, !6, i64 40}
!18 = !{!15, !6, i64 48}
!19 = distinct !{!19, !20}
!20 = !{!"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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @nc_net_backward(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = load i32, ptr %0, align 8, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  br label %5

._crit_edge:                                      ; preds = %5, %1
  ret void

5:                                                ; preds = %.lr.ph, %5
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %5 ]
  %6 = phi i32 [ %2, %.lr.ph ], [ %23, %5 ]
  %7 = load ptr, ptr %4, align 8, !tbaa !11
  %8 = getelementptr inbounds ptr, ptr %7, i64 %indvars.iv
  %9 = load ptr, ptr %8, align 8, !tbaa !12
  %10 = load ptr, ptr @stderr, align 8, !tbaa !12
  %11 = trunc nuw nsw i64 %indvars.iv to i32
  %12 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.3, i32 noundef %11, i32 noundef %6) #2
  %13 = load ptr, ptr @stderr, align 8, !tbaa !12
  %14 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef nonnull @.str.2) #2
  %15 = getelementptr inbounds i8, ptr %9, i64 24
  %16 = load ptr, ptr %15, align 8, !tbaa !13
  %17 = getelementptr inbounds i8, ptr %9, i64 8
  %18 = load ptr, ptr %17, align 8, !tbaa !15
  %19 = getelementptr inbounds i8, ptr %9, i64 40
  %20 = load ptr, ptr %19, align 8, !tbaa !16
  %21 = getelementptr inbounds i8, ptr %9, i64 48
  %22 = load ptr, ptr %21, align 8, !tbaa !17
  tail call void %16(ptr noundef %18, ptr noundef %20, ptr noundef %22) #3
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %23 = load i32, ptr %0, align 8, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = icmp slt i64 %indvars.iv.next, %24
  br i1 %25, label %5, label %._crit_edge, !llvm.loop !18
}

attributes #0 = { nofree nounwind "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 = { 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 = { cold nounwind }
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, !7, i64 0}
!6 = !{!"NcNet", !7, i64 0, !10, i64 8, !7, i64 16, !10, i64 24, !10, i64 32, !10, i64 40}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!10, !10, i64 0}
!13 = !{!14, !10, i64 24}
!14 = !{!"NcLayer", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !10, i64 48}
!15 = !{!14, !10, i64 8}
!16 = !{!14, !10, i64 40}
!17 = !{!14, !10, i64 48}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}


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