; LLVM IR from clunietp/libgmsd :: src (kernel)

; 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: nounwind uwtable
define dso_local zeroext i1 @fspecial_average(ptr noundef %0, i64 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store ptr null, ptr %7, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %14

11:                                               ; preds = %2
  %12 = load i64, ptr %5, align 8, !tbaa !9
  %13 = icmp ne i64 %12, 0
  br i1 %13, label %15, label %14

14:                                               ; preds = %11, %2
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %40

15:                                               ; preds = %11
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  call void @kernel_destroy(ptr noundef %16)
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = call zeroext i1 @kernel_init(ptr noundef %17, i64 noundef %18, ptr noundef null)
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = call ptr @kernel_matrix(ptr noundef %20)
  %22 = call ptr @matrix_data(ptr noundef %21)
  store ptr %22, ptr %7, align 8, !tbaa !5
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %23

23:                                               ; preds = %36, %15
  %24 = load i64, ptr %6, align 8, !tbaa !9
  %25 = load i64, ptr %5, align 8, !tbaa !9
  %26 = mul i64 %25, 2
  %27 = icmp ult i64 %24, %26
  br i1 %27, label %28, label %39

28:                                               ; preds = %23
  %29 = load i64, ptr %5, align 8, !tbaa !9
  %30 = mul i64 %29, 2
  %31 = uitofp i64 %30 to double
  %32 = fdiv double 1.000000e+00, %31
  %33 = fptrunc double %32 to float
  %34 = load ptr, ptr %7, align 8, !tbaa !5
  %35 = getelementptr inbounds float, ptr %34, i32 1
  store ptr %35, ptr %7, align 8, !tbaa !5
  store float %33, ptr %34, align 4, !tbaa !11
  br label %36

36:                                               ; preds = %28
  %37 = load i64, ptr %6, align 8, !tbaa !9
  %38 = add i64 %37, 1
  store i64 %38, ptr %6, align 8, !tbaa !9
  br label %23, !llvm.loop !13

39:                                               ; preds = %23
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %40

40:                                               ; preds = %39, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %41 = load i1, ptr %3, align 1
  ret i1 %41
}

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @kernel_destroy(ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i1 @kernel_init(ptr noundef, i64 noundef, ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @matrix_data(ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @kernel_matrix(ptr 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 = { 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 nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: nounwind uwtable
define dso_local noundef zeroext i1 @fspecial_average(ptr noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp ne ptr %0, null
  %4 = icmp ne i64 %1, 0
  %or.cond = and i1 %3, %4
  br i1 %or.cond, label %5, label %.loopexit

5:                                                ; preds = %2
  tail call void @kernel_destroy(ptr noundef nonnull %0)
  %6 = tail call zeroext i1 @kernel_init(ptr noundef nonnull %0, i64 noundef %1, ptr noundef null)
  %7 = tail call ptr @kernel_matrix(ptr noundef nonnull %0)
  %8 = tail call ptr @matrix_data(ptr noundef %7)
  %9 = shl i64 %1, 1
  %.not = icmp eq i64 %9, 0
  br i1 %.not, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %5
  %10 = uitofp i64 %9 to double
  %11 = fdiv double 1.000000e+00, %10
  %12 = fptrunc double %11 to float
  %min.iters.check = icmp ult i64 %9, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %9, -8
  %13 = shl i64 %n.vec, 2
  %ind.end = getelementptr i8, ptr %8, i64 %13
  %broadcast.splatinsert = insertelement <4 x float> poison, float %12, 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 ]
  %offset.idx = shl i64 %index, 2
  %next.gep = getelementptr i8, ptr %8, i64 %offset.idx
  %14 = getelementptr i8, ptr %next.gep, i64 16
  store <4 x float> %broadcast.splat, ptr %next.gep, align 4, !tbaa !5
  store <4 x float> %broadcast.splat, ptr %14, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %9, %n.vec
  br i1 %cmp.n, label %.loopexit, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %.018.ph = phi ptr [ %8, %.lr.ph ], [ %ind.end, %middle.block ]
  %.01217.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  br label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %.018 = phi ptr [ %16, %scalar.ph ], [ %.018.ph, %scalar.ph.preheader ]
  %.01217 = phi i64 [ %17, %scalar.ph ], [ %.01217.ph, %scalar.ph.preheader ]
  %16 = getelementptr inbounds i8, ptr %.018, i64 4
  store float %12, ptr %.018, align 4, !tbaa !5
  %17 = add nuw i64 %.01217, 1
  %exitcond.not = icmp eq i64 %17, %9
  br i1 %exitcond.not, label %.loopexit, label %scalar.ph, !llvm.loop !13

.loopexit:                                        ; preds = %scalar.ph, %middle.block, %5, %2
  ret i1 %or.cond
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @kernel_destroy(ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden zeroext i1 @kernel_init(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @matrix_data(ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @kernel_matrix(ptr noundef) local_unnamed_addr #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 = { inlinehint 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/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, !12, !11}


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