; LLVM IR from maksimandrianov/cdcontainers :: src (pairing-heap)

; 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.cdc_pairing_heap_node = type { ptr, ptr, ptr, ptr }
%struct.cdc_pairing_heap = type { ptr, i64, ptr }
%struct.cdc_data_info = type { ptr, ptr, ptr, ptr, ptr, i64, i64 }
%struct.cdc_pairing_heap_iter = type { ptr, ptr }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [81 x i8], align 1
@__PRETTY_FUNCTION__.cdc_pairing_heap_riinsert = external hidden unnamed_addr constant [89 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #0

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

; Function Attrs: nounwind allocsize(0,1)
declare noalias ptr @calloc(i64 noundef, i64 noundef) #2

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

; Function Attrs: nounwind uwtable
define dso_local i32 @cdc_pairing_heap_riinsert(ptr noundef %0, ptr noundef %1, ptr noundef %2) #3 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %13

12:                                               ; preds = %3
  br label %14

13:                                               ; preds = %3
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 231, ptr noundef @__PRETTY_FUNCTION__.cdc_pairing_heap_riinsert) #4
  unreachable

14:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %15 = call noalias ptr @calloc(i64 noundef 32, i64 noundef 1) #6
  store ptr %15, ptr %8, align 8, !tbaa !5
  %16 = load ptr, ptr %8, align 8, !tbaa !5
  %17 = icmp ne ptr %16, null
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  store i32 1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %49

19:                                               ; preds = %14
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.cdc_pairing_heap_node, ptr %21, i32 0, i32 3
  store ptr %20, ptr %22, align 8, !tbaa !9
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.cdc_pairing_heap, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.cdc_pairing_heap, ptr %27, i32 0, i32 2
  %29 = load ptr, ptr %28, align 8, !tbaa !14
  %30 = getelementptr inbounds %struct.cdc_data_info, ptr %29, i32 0, i32 1
  %31 = load ptr, ptr %30, align 8, !tbaa !15
  %32 = call ptr @meld(ptr noundef %25, ptr noundef %26, ptr noundef %31)
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.cdc_pairing_heap, ptr %33, i32 0, i32 0
  store ptr %32, ptr %34, align 8, !tbaa !11
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.cdc_pairing_heap, ptr %35, i32 0, i32 1
  %37 = load i64, ptr %36, align 8, !tbaa !17
  %38 = add i64 %37, 1
  store i64 %38, ptr %36, align 8, !tbaa !17
  %39 = load ptr, ptr %7, align 8, !tbaa !5
  %40 = icmp ne ptr %39, null
  br i1 %40, label %41, label %48

41:                                               ; preds = %19
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.cdc_pairing_heap_iter, ptr %43, i32 0, i32 0
  store ptr %42, ptr %44, align 8, !tbaa !18
  %45 = load ptr, ptr %8, align 8, !tbaa !5
  %46 = load ptr, ptr %7, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.cdc_pairing_heap_iter, ptr %46, i32 0, i32 1
  store ptr %45, ptr %47, align 8, !tbaa !20
  br label %48

48:                                               ; preds = %41, %19
  store i32 0, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %49

49:                                               ; preds = %48, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  %50 = load i32, ptr %4, align 4
  ret i32 %50
}

; Function Attrs: nounwind uwtable
declare hidden ptr @meld(ptr noundef, ptr noundef, ptr noundef) #3

attributes #0 = { noreturn 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind allocsize(0,1) "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 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 #4 = { noreturn nounwind }
attributes #5 = { nounwind }
attributes #6 = { nounwind allocsize(0,1) }

!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 24}
!10 = !{!"cdc_pairing_heap_node", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!12, !6, i64 0}
!12 = !{!"cdc_pairing_heap", !6, i64 0, !13, i64 8, !6, i64 16}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !6, i64 16}
!15 = !{!16, !6, i64 8}
!16 = !{!"cdc_data_info", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !13, i64 40, !13, i64 48}
!17 = !{!12, !13, i64 8}
!18 = !{!19, !6, i64 0}
!19 = !{!"cdc_pairing_heap_iter", !6, i64 0, !6, i64 8}
!20 = !{!19, !6, i64 8}


; 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"

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [81 x i8], align 1
@__PRETTY_FUNCTION__.cdc_pairing_heap_riinsert = external hidden unnamed_addr constant [89 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @cdc_pairing_heap_riinsert(ptr noundef %0, ptr noundef %1, ptr noundef writeonly %2) local_unnamed_addr #2 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %4, label %5

4:                                                ; preds = %3
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 231, ptr noundef nonnull @__PRETTY_FUNCTION__.cdc_pairing_heap_riinsert) #3
  unreachable

5:                                                ; preds = %3
  %6 = tail call noalias dereferenceable_or_null(32) ptr @calloc(i64 noundef 32, i64 noundef 1) #4
  %.not17 = icmp eq ptr %6, null
  br i1 %.not17, label %20, label %7

7:                                                ; preds = %5
  %8 = getelementptr inbounds i8, ptr %6, i64 24
  store ptr %1, ptr %8, align 8, !tbaa !5
  %9 = load ptr, ptr %0, align 8, !tbaa !10
  %10 = getelementptr inbounds i8, ptr %0, i64 16
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = getelementptr inbounds i8, ptr %11, i64 8
  %13 = load ptr, ptr %12, align 8, !tbaa !14
  %14 = tail call ptr @meld(ptr noundef %9, ptr noundef nonnull %6, ptr noundef %13)
  store ptr %14, ptr %0, align 8, !tbaa !10
  %15 = getelementptr inbounds i8, ptr %0, i64 8
  %16 = load i64, ptr %15, align 8, !tbaa !16
  %17 = add i64 %16, 1
  store i64 %17, ptr %15, align 8, !tbaa !16
  %.not18 = icmp eq ptr %2, null
  br i1 %.not18, label %20, label %18

18:                                               ; preds = %7
  store ptr %0, ptr %2, align 8, !tbaa !17
  %19 = getelementptr inbounds i8, ptr %2, i64 8
  store ptr %6, ptr %19, align 8, !tbaa !19
  br label %20

20:                                               ; preds = %7, %18, %5
  %.0 = phi i32 [ 1, %5 ], [ 0, %18 ], [ 0, %7 ]
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare hidden ptr @meld(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

attributes #0 = { noreturn 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 = { mustprogress nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) 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 #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 = { noreturn nounwind }
attributes #4 = { nounwind allocsize(0,1) }

!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, !7, i64 24}
!6 = !{!"cdc_pairing_heap_node", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !7, i64 0}
!11 = !{!"cdc_pairing_heap", !7, i64 0, !12, i64 8, !7, i64 16}
!12 = !{!"long", !8, i64 0}
!13 = !{!11, !7, i64 16}
!14 = !{!15, !7, i64 8}
!15 = !{!"cdc_data_info", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !12, i64 40, !12, i64 48}
!16 = !{!11, !12, i64 8}
!17 = !{!18, !7, i64 0}
!18 = !{!"cdc_pairing_heap_iter", !7, i64 0, !7, i64 8}
!19 = !{!18, !7, i64 8}


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