; LLVM IR from bjourne/fast_snn_fpga :: src (var_vector)

; 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.var_vector = type { ptr, i64, i64, i64 }

; Function Attrs: nounwind uwtable
declare dso_local void @var_vec_grow(ptr noundef, i64 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @var_vec_add(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.var_vector, ptr %5, i32 0, i32 2
  %7 = load i64, ptr %6, align 8, !tbaa !9
  %8 = add i64 %7, 1
  store i64 %8, ptr %6, align 8, !tbaa !9
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.var_vector, ptr %9, i32 0, i32 2
  %11 = load i64, ptr %10, align 8, !tbaa !9
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.var_vector, ptr %12, i32 0, i32 1
  %14 = load i64, ptr %13, align 8, !tbaa !12
  %15 = icmp ugt i64 %11, %14
  br i1 %15, label %16, label %18

16:                                               ; preds = %2
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  call void @var_vec_grow(ptr noundef %17, i64 noundef 0)
  br label %18

18:                                               ; preds = %16, %2
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.var_vector, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !13
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.var_vector, ptr %22, i32 0, i32 2
  %24 = load i64, ptr %23, align 8, !tbaa !9
  %25 = sub i64 %24, 1
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.var_vector, ptr %26, i32 0, i32 3
  %28 = load i64, ptr %27, align 8, !tbaa !14
  %29 = mul i64 %25, %28
  %30 = getelementptr inbounds i8, ptr %21, i64 %29
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.var_vector, ptr %32, i32 0, i32 3
  %34 = load i64, ptr %33, align 8, !tbaa !14
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %30, ptr align 1 %31, i64 %34, i1 false)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 nounwind willreturn memory(argmem: readwrite) }

!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, !11, i64 16}
!10 = !{!"", !6, i64 0, !11, i64 8, !11, i64 16, !11, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!10, !6, i64 0}
!14 = !{!10, !11, i64 24}


; 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: nounwind uwtable
declare dso_local void @var_vec_grow(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @var_vec_add(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = add i64 %4, 1
  store i64 %5, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load i64, ptr %6, align 8, !tbaa !11
  %8 = icmp ugt i64 %5, %7
  br i1 %8, label %9, label %11

9:                                                ; preds = %2
  tail call void @var_vec_grow(ptr noundef nonnull %0, i64 noundef 0)
  %.pre = load i64, ptr %3, align 8, !tbaa !5
  %10 = add i64 %.pre, -1
  br label %11

11:                                               ; preds = %9, %2
  %12 = phi i64 [ %10, %9 ], [ %4, %2 ]
  %13 = load ptr, ptr %0, align 8, !tbaa !12
  %14 = getelementptr inbounds i8, ptr %0, i64 24
  %15 = load i64, ptr %14, align 8, !tbaa !13
  %16 = mul i64 %12, %15
  %17 = getelementptr inbounds i8, ptr %13, i64 %16
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %17, ptr align 1 %1, i64 %15, i1 false)
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 16}
!6 = !{!"", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !7, i64 0}
!13 = !{!6, !10, i64 24}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass