; LLVM IR from mitdbg/deneva :: storage/index_btree.ll (ZN11index_btree7make_lfEmRP7bt_node)

; 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.bt_node = type { ptr, i8, ptr, ptr, i32, ptr, i8, %union.pthread_mutex_t, i32, i32 }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }

; 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: mustprogress uwtable
define dso_local noundef i32 @_ZN11index_btree7make_lfEmRP7bt_node(ptr noundef nonnull align 8 dereferenceable(56) %0, i64 noundef %1, ptr noundef nonnull align 8 dereferenceable(8) %2) #1 align 2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %11 = load i64, ptr %6, align 8, !tbaa !9
  %12 = load ptr, ptr %7, align 8, !tbaa !5
  %13 = call noundef i32 @_ZN11index_btree9make_nodeEmRP7bt_node(ptr noundef nonnull align 8 dereferenceable(56) %10, i64 noundef %11, ptr noundef nonnull align 8 dereferenceable(8) %12)
  store i32 %13, ptr %8, align 4, !tbaa !11
  %14 = load i32, ptr %8, align 4, !tbaa !11
  %15 = icmp ne i32 %14, 0
  br i1 %15, label %16, label %18

16:                                               ; preds = %3
  %17 = load i32, ptr %8, align 4, !tbaa !11
  store i32 %17, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %22

18:                                               ; preds = %3
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.bt_node, ptr %20, i32 0, i32 1
  store i8 1, ptr %21, align 8, !tbaa !13
  store i32 0, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %22

22:                                               ; preds = %18, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %23 = load i32, ptr %4, align 4
  ret i32 %23
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN11index_btree9make_nodeEmRP7bt_node(ptr noundef nonnull align 8 dereferenceable(56), i64 noundef, ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"_ZTS2RC", !7, i64 0}
!13 = !{!14, !15, i64 8}
!14 = !{!"_ZTS7bt_node", !6, i64 0, !15, i64 8, !6, i64 16, !6, i64 24, !16, i64 32, !6, i64 40, !15, i64 48, !7, i64 56, !17, i64 96, !16, i64 100}
!15 = !{!"bool", !7, i64 0}
!16 = !{!"int", !7, i64 0}
!17 = !{!"_ZTS7latch_t", !7, i64 0}


; 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 uwtable
define dso_local noundef i32 @_ZN11index_btree7make_lfEmRP7bt_node(ptr noundef nonnull align 8 dereferenceable(56) %0, i64 noundef %1, ptr noundef nonnull align 8 dereferenceable(8) %2) local_unnamed_addr #0 align 2 {
  %4 = tail call noundef i32 @_ZN11index_btree9make_nodeEmRP7bt_node(ptr noundef nonnull align 8 dereferenceable(56) %0, i64 noundef %1, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %5, label %8

5:                                                ; preds = %3
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %6, i64 8
  store i8 1, ptr %7, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %3, %5
  ret i32 %4
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN11index_btree9make_nodeEmRP7bt_node(ptr noundef nonnull align 8 dereferenceable(56), i64 noundef, ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

attributes #0 = { mustprogress 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"_ZTS7bt_node", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24, !12, i64 32, !6, i64 40, !11, i64 48, !7, i64 56, !13, i64 96, !12, i64 100}
!11 = !{!"bool", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"_ZTS7latch_t", !7, i64 0}


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