; LLVM IR from yudi-matsuzake/libgenerics :: src (red_black_tree)

; 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.redblacktree_t = type { i64, i64, ptr, ptr, i64, ptr }
%struct.redblacknode_t = type { ptr, ptr, ptr, i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @rbtree_remove_double_black(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.redblacktree_t, ptr %6, i32 0, i32 5
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = icmp eq ptr %5, %8
  br i1 %9, label %10, label %13

10:                                               ; preds = %2
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.redblacktree_t, ptr %11, i32 0, i32 5
  store ptr null, ptr %12, align 8, !tbaa !9
  br label %32

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.redblacknode_t, ptr %14, i32 0, i32 2
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  %17 = getelementptr inbounds %struct.redblacknode_t, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !15
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = icmp eq ptr %18, %19
  br i1 %20, label %21, label %26

21:                                               ; preds = %13
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.redblacknode_t, ptr %22, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !12
  %25 = getelementptr inbounds %struct.redblacknode_t, ptr %24, i32 0, i32 0
  store ptr null, ptr %25, align 8, !tbaa !15
  br label %31

26:                                               ; preds = %13
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.redblacknode_t, ptr %27, i32 0, i32 2
  %29 = load ptr, ptr %28, align 8, !tbaa !12
  %30 = getelementptr inbounds %struct.redblacknode_t, ptr %29, i32 0, i32 1
  store ptr null, ptr %30, align 8, !tbaa !16
  br label %31

31:                                               ; preds = %26, %21
  br label %32

32:                                               ; preds = %31, %10
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  call void @free(ptr noundef %33) #2
  ret void
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #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 = { 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 #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 = !{!"redblacktree_t", !11, i64 0, !11, i64 8, !6, i64 16, !6, i64 24, !11, i64 32, !6, i64 40}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !6, i64 16}
!13 = !{!"redblacknode_t", !6, i64 0, !6, i64 8, !6, i64 16, !14, i64 24, !6, i64 32}
!14 = !{!"int", !7, i64 0}
!15 = !{!13, !6, i64 0}
!16 = !{!13, !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"

; Function Attrs: mustprogress nounwind willreturn uwtable
define dso_local void @rbtree_remove_double_black(ptr nocapture noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 40
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = icmp eq ptr %4, %1
  br i1 %5, label %11, label %6

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %1, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !11
  %9 = load ptr, ptr %8, align 8, !tbaa !14
  %10 = icmp eq ptr %9, %1
  %spec.select.idx = select i1 %10, i64 0, i64 8
  %spec.select = getelementptr inbounds i8, ptr %8, i64 %spec.select.idx
  br label %11

11:                                               ; preds = %6, %2
  %.sink = phi ptr [ %3, %2 ], [ %spec.select, %6 ]
  store ptr null, ptr %.sink, align 8, !tbaa !15
  tail call void @free(ptr noundef %1) #2
  ret void
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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 #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 = !{!"redblacktree_t", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 24, !7, i64 32, !10, i64 40}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"redblacknode_t", !10, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !10, i64 32}
!13 = !{!"int", !8, i64 0}
!14 = !{!12, !10, i64 0}
!15 = !{!10, !10, i64 0}


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