; LLVM IR from jwerle/libhypercore-crypto :: deps/merkle (allocator)

; 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.merkle_allocator_stats_s = type { i32, i32, i32 }

@stats = external hidden global %struct.merkle_allocator_stats_s, align 4
@dealloc = external hidden global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @merkle_free(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp eq ptr null, %3
  br i1 %4, label %5, label %6

5:                                                ; preds = %1
  br label %19

6:                                                ; preds = %1
  %7 = load ptr, ptr @dealloc, align 8, !tbaa !5
  %8 = icmp ne ptr null, %7
  br i1 %8, label %9, label %14

9:                                                ; preds = %6
  %10 = load i32, ptr getelementptr inbounds (%struct.merkle_allocator_stats_s, ptr @stats, i32 0, i32 2), align 4, !tbaa !9
  %11 = add i32 %10, 1
  store i32 %11, ptr getelementptr inbounds (%struct.merkle_allocator_stats_s, ptr @stats, i32 0, i32 2), align 4, !tbaa !9
  %12 = load ptr, ptr @dealloc, align 8, !tbaa !5
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  call void %12(ptr noundef %13)
  br label %18

14:                                               ; preds = %6
  %15 = load i32, ptr getelementptr inbounds (%struct.merkle_allocator_stats_s, ptr @stats, i32 0, i32 2), align 4, !tbaa !9
  %16 = add i32 %15, 1
  store i32 %16, ptr getelementptr inbounds (%struct.merkle_allocator_stats_s, ptr @stats, i32 0, i32 2), align 4, !tbaa !9
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %17) #2
  br label %18

18:                                               ; preds = %14, %9
  br label %19

19:                                               ; preds = %18, %5
  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, !11, i64 8}
!10 = !{!"merkle_allocator_stats_s", !11, i64 0, !11, i64 4, !11, i64 8}
!11 = !{!"int", !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"

%struct.merkle_allocator_stats_s = type { i32, i32, i32 }

@stats = external hidden local_unnamed_addr global %struct.merkle_allocator_stats_s, align 4
@dealloc = external hidden local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @merkle_free(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %9, label %3

3:                                                ; preds = %1
  %4 = load ptr, ptr @dealloc, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  %5 = load i32, ptr getelementptr inbounds (i8, ptr @stats, i64 8), align 4, !tbaa !9
  %6 = add i32 %5, 1
  store i32 %6, ptr getelementptr inbounds (i8, ptr @stats, i64 8), align 4, !tbaa !9
  br i1 %.not, label %8, label %7

7:                                                ; preds = %3
  tail call void %4(ptr noundef nonnull %0) #2
  br label %9

8:                                                ; preds = %3
  tail call void @free(ptr noundef nonnull %0) #2
  br label %9

9:                                                ; preds = %7, %8, %1
  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 = { 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 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"merkle_allocator_stats_s", !11, i64 0, !11, i64 4, !11, i64 8}
!11 = !{!"int", !7, i64 0}


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