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

; 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.trie_t = type { i64, i64, %struct.tnode_t }
%struct.tnode_t = type { ptr, [256 x 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: nounwind uwtable
declare dso_local ptr @node_at(ptr noundef, ptr noundef, i64 noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @trie_set_element(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i64 %2, ptr %8, align 8, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %14, label %13

13:                                               ; preds = %4
  store i32 1, ptr %5, align 4
  br label %36

14:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load ptr, ptr %7, align 8, !tbaa !5
  %17 = load i64, ptr %8, align 8, !tbaa !9
  %18 = call ptr @node_at(ptr noundef %15, ptr noundef %16, i64 noundef %17)
  store ptr %18, ptr %10, align 8, !tbaa !5
  %19 = load ptr, ptr %10, align 8, !tbaa !5
  %20 = icmp ne ptr %19, null
  br i1 %20, label %21, label %35

21:                                               ; preds = %14
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.trie_t, ptr %22, i32 0, i32 1
  %24 = load i64, ptr %23, align 8, !tbaa !11
  %25 = icmp ne i64 %24, 0
  br i1 %25, label %26, label %34

26:                                               ; preds = %21
  %27 = load ptr, ptr %10, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.tnode_t, ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !14
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.trie_t, ptr %31, i32 0, i32 1
  %33 = load i64, ptr %32, align 8, !tbaa !11
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %29, ptr align 1 %30, i64 %33, i1 false)
  br label %34

34:                                               ; preds = %26, %21
  br label %35

35:                                               ; preds = %34, %14
  store i32 0, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %36

36:                                               ; preds = %35, %13
  %37 = load i32, ptr %5, align 4
  ret i32 %37
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"trie_t", !10, i64 0, !10, i64 8, !13, i64 16}
!13 = !{!"tnode_t", !6, i64 0, !7, i64 8}
!14 = !{!13, !6, 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: nounwind uwtable
declare dso_local ptr @node_at(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @trie_set_element(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr nocapture noundef readonly %3) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %12, label %5

5:                                                ; preds = %4
  %6 = tail call ptr @node_at(ptr noundef nonnull %0, ptr noundef %1, i64 noundef %2)
  %.not12 = icmp eq ptr %6, null
  br i1 %.not12, label %12, label %7

7:                                                ; preds = %5
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load i64, ptr %8, align 8, !tbaa !5
  %.not13 = icmp eq i64 %9, 0
  br i1 %.not13, label %12, label %10

10:                                               ; preds = %7
  %11 = load ptr, ptr %6, align 8, !tbaa !12
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %11, ptr align 1 %3, i64 %9, i1 false)
  br label %12

12:                                               ; preds = %5, %10, %7, %4
  %.0 = phi i32 [ 1, %4 ], [ 0, %7 ], [ 0, %10 ], [ 0, %5 ]
  ret i32 %.0
}

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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 8}
!6 = !{!"trie_t", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"tnode_t", !11, i64 0, !8, i64 8}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!10, !11, i64 0}


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