; LLVM IR from CLASS-SZ/class_sz :: class-sz/tools (quadrature)

; 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.adaptive_integration_tree_node = type { double, double, ptr, ptr, i32, ptr, ptr }

; Function Attrs: nounwind
declare void @free(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @burn_tree(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp ne ptr %3, null
  br i1 %4, label %5, label %45

5:                                                ; preds = %1
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %6, i32 0, i32 5
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %15

10:                                               ; preds = %5
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %11, i32 0, i32 5
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = call i32 @burn_tree(ptr noundef %13)
  br label %15

15:                                               ; preds = %10, %5
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %16, i32 0, i32 6
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %25

20:                                               ; preds = %15
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %21, i32 0, i32 6
  %23 = load ptr, ptr %22, align 8, !tbaa !13
  %24 = call i32 @burn_tree(ptr noundef %23)
  br label %25

25:                                               ; preds = %20, %15
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %26, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !14
  %29 = icmp ne ptr %28, null
  br i1 %29, label %30, label %34

30:                                               ; preds = %25
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %31, i32 0, i32 2
  %33 = load ptr, ptr %32, align 8, !tbaa !14
  call void @free(ptr noundef %33) #2
  br label %34

34:                                               ; preds = %30, %25
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %35, i32 0, i32 3
  %37 = load ptr, ptr %36, align 8, !tbaa !15
  %38 = icmp ne ptr %37, null
  br i1 %38, label %39, label %43

39:                                               ; preds = %34
  %40 = load ptr, ptr %2, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %40, i32 0, i32 3
  %42 = load ptr, ptr %41, align 8, !tbaa !15
  call void @free(ptr noundef %42) #2
  br label %43

43:                                               ; preds = %39, %34
  %44 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %44) #2
  br label %45

45:                                               ; preds = %43, %1
  ret i32 0
}

attributes #0 = { 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 = { 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, !6, i64 40}
!10 = !{!"adaptive_integration_tree_node", !11, i64 0, !11, i64 8, !6, i64 16, !6, i64 24, !12, i64 32, !6, i64 40, !6, i64 48}
!11 = !{!"double", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!10, !6, i64 48}
!14 = !{!10, !6, i64 16}
!15 = !{!10, !6, 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: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @burn_tree(ptr noundef %0) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %21, label %2

2:                                                ; preds = %1
  %3 = getelementptr inbounds i8, ptr %0, i64 40
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.not14 = icmp eq ptr %4, null
  br i1 %.not14, label %7, label %5

5:                                                ; preds = %2
  %6 = tail call i32 @burn_tree(ptr noundef nonnull %4)
  br label %7

7:                                                ; preds = %5, %2
  %8 = getelementptr inbounds i8, ptr %0, i64 48
  %9 = load ptr, ptr %8, align 8, !tbaa !12
  %.not15 = icmp eq ptr %9, null
  br i1 %.not15, label %12, label %10

10:                                               ; preds = %7
  %11 = tail call i32 @burn_tree(ptr noundef nonnull %9)
  br label %12

12:                                               ; preds = %10, %7
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %.not16 = icmp eq ptr %14, null
  br i1 %.not16, label %16, label %15

15:                                               ; preds = %12
  tail call void @free(ptr noundef nonnull %14) #2
  br label %16

16:                                               ; preds = %15, %12
  %17 = getelementptr inbounds i8, ptr %0, i64 24
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %.not17 = icmp eq ptr %18, null
  br i1 %.not17, label %20, label %19

19:                                               ; preds = %16
  tail call void @free(ptr noundef nonnull %18) #2
  br label %20

20:                                               ; preds = %19, %16
  tail call void @free(ptr noundef nonnull %0) #2
  br label %21

21:                                               ; preds = %20, %1
  ret i32 0
}

attributes #0 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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, !10, i64 40}
!6 = !{!"adaptive_integration_tree_node", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 24, !11, i64 32, !10, i64 40, !10, i64 48}
!7 = !{!"double", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !10, i64 48}
!13 = !{!6, !10, i64 16}
!14 = !{!6, !10, i64 24}


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