; LLVM IR from seppo0010/rlite :: src (page_btree)

; 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.rl_btree = type { ptr, i64, i64, ptr, i64, i64 }
%struct.rl_btree_node = type { ptr, ptr, ptr, i64 }

; 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 allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @rl_btree_node_create(ptr noundef %0, ptr noundef %1, ptr noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %9 = call noalias ptr @malloc(i64 noundef 32) #5
  store ptr %9, ptr %8, align 8, !tbaa !5
  %10 = load ptr, ptr %8, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %13, label %12

12:                                               ; preds = %3
  store i32 4, ptr %7, align 4, !tbaa !9
  br label %46

13:                                               ; preds = %3
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.rl_btree, ptr %14, i32 0, i32 1
  %16 = load i64, ptr %15, align 8, !tbaa !11
  %17 = mul i64 8, %16
  %18 = call noalias ptr @malloc(i64 noundef %17) #5
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.rl_btree_node, ptr %19, i32 0, i32 0
  store ptr %18, ptr %20, align 8, !tbaa !14
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.rl_btree_node, ptr %21, i32 0, i32 0
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  %24 = icmp ne ptr %23, null
  br i1 %24, label %26, label %25

25:                                               ; preds = %13
  store i32 4, ptr %7, align 4, !tbaa !9
  br label %46

26:                                               ; preds = %13
  %27 = load ptr, ptr %8, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.rl_btree_node, ptr %27, i32 0, i32 1
  store ptr null, ptr %28, align 8, !tbaa !16
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.rl_btree, ptr %29, i32 0, i32 1
  %31 = load i64, ptr %30, align 8, !tbaa !11
  %32 = mul i64 8, %31
  %33 = call noalias ptr @malloc(i64 noundef %32) #5
  %34 = load ptr, ptr %8, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.rl_btree_node, ptr %34, i32 0, i32 2
  store ptr %33, ptr %35, align 8, !tbaa !17
  %36 = load ptr, ptr %8, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.rl_btree_node, ptr %36, i32 0, i32 2
  %38 = load ptr, ptr %37, align 8, !tbaa !17
  %39 = icmp ne ptr %38, null
  br i1 %39, label %41, label %40

40:                                               ; preds = %26
  store i32 4, ptr %7, align 4, !tbaa !9
  br label %46

41:                                               ; preds = %26
  %42 = load ptr, ptr %8, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.rl_btree_node, ptr %42, i32 0, i32 3
  store i64 0, ptr %43, align 8, !tbaa !18
  %44 = load ptr, ptr %8, align 8, !tbaa !5
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %44, ptr %45, align 8, !tbaa !5
  br label %46

46:                                               ; preds = %41, %40, %25, %12
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = icmp ne i32 %47, 0
  br i1 %48, label %49, label %57

49:                                               ; preds = %46
  %50 = load ptr, ptr %8, align 8, !tbaa !5
  %51 = icmp ne ptr %50, null
  br i1 %51, label %52, label %57

52:                                               ; preds = %49
  %53 = load ptr, ptr %8, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.rl_btree_node, ptr %53, i32 0, i32 0
  %55 = load ptr, ptr %54, align 8, !tbaa !14
  call void @free(ptr noundef %55) #4
  %56 = load ptr, ptr %8, align 8, !tbaa !5
  call void @free(ptr noundef %56) #4
  br label %57

57:                                               ; preds = %52, %49, %46
  %58 = load i32, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  ret i32 %58
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind allocsize(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 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 "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 #4 = { nounwind }
attributes #5 = { nounwind allocsize(0) }

!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, !13, i64 8}
!12 = !{!"rl_btree", !6, i64 0, !13, i64 8, !13, i64 16, !6, i64 24, !13, i64 32, !13, i64 40}
!13 = !{!"long", !7, i64 0}
!14 = !{!15, !6, i64 0}
!15 = !{!"rl_btree_node", !6, i64 0, !6, i64 8, !6, i64 16, !13, i64 24}
!16 = !{!15, !6, i64 8}
!17 = !{!15, !6, i64 16}
!18 = !{!15, !13, 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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind willreturn uwtable
define dso_local range(i32 0, 5) i32 @rl_btree_node_create(ptr nocapture noundef readnone %0, ptr nocapture noundef readonly %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #1 {
  %4 = tail call noalias dereferenceable_or_null(32) ptr @malloc(i64 noundef 32) #3
  %.not21 = icmp eq ptr %4, null
  br i1 %.not21, label %.thread, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %1, i64 8
  %7 = load i64, ptr %6, align 8, !tbaa !5
  %8 = shl i64 %7, 3
  %9 = tail call noalias ptr @malloc(i64 noundef %8) #3
  store ptr %9, ptr %4, align 8, !tbaa !11
  %.not = icmp eq ptr %9, null
  br i1 %.not, label %16, label %10

10:                                               ; preds = %5
  %11 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr null, ptr %11, align 8, !tbaa !13
  %12 = tail call noalias ptr @malloc(i64 noundef %8) #3
  %13 = getelementptr inbounds i8, ptr %4, i64 16
  store ptr %12, ptr %13, align 8, !tbaa !14
  %.not17 = icmp eq ptr %12, null
  br i1 %.not17, label %16, label %14

14:                                               ; preds = %10
  %15 = getelementptr inbounds i8, ptr %4, i64 24
  store i64 0, ptr %15, align 8, !tbaa !15
  store ptr %4, ptr %2, align 8, !tbaa !16
  br label %.thread

16:                                               ; preds = %5, %10
  tail call void @free(ptr noundef %9) #4
  tail call void @free(ptr noundef nonnull %4) #4
  br label %.thread

.thread:                                          ; preds = %3, %14, %16
  %.020 = phi i32 [ 4, %16 ], [ 4, %3 ], [ 0, %14 ]
  ret i32 %.020
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

attributes #0 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(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 = { mustprogress nounwind willreturn 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 = { 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 #3 = { nounwind allocsize(0) }
attributes #4 = { 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 8}
!6 = !{!"rl_btree", !7, i64 0, !10, i64 8, !10, i64 16, !7, i64 24, !10, i64 32, !10, i64 40}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!12, !7, i64 0}
!12 = !{!"rl_btree_node", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!13 = !{!12, !7, i64 8}
!14 = !{!12, !7, i64 16}
!15 = !{!12, !10, i64 24}
!16 = !{!7, !7, i64 0}


; Effective O3 passes: ConstraintEliminationPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass