; LLVM IR from mitdbg/deneva :: concurrency_control/row_mvcc.ll (ZN8Row_mvcc16return_his_entryEP10MVHisEntry)

; 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"

%class.mem_alloc = type { i8 }
%struct.MVHisEntry = type { i64, ptr, ptr, ptr }

@mem_allocator = external global %class.mem_alloc, align 1

declare void @_ZN5row_t8free_rowEv(ptr noundef nonnull align 8 dereferenceable(64)) #0

declare void @_ZN9mem_alloc4freeEPvm(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, i64 noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8Row_mvcc16return_his_entryEP10MVHisEntry(ptr noundef nonnull align 8 dereferenceable(104) %0, ptr noundef %1) #1 align 2 {
  %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 %3, align 8
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.MVHisEntry, ptr %6, i32 0, i32 1
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %17

10:                                               ; preds = %2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.MVHisEntry, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  call void @_ZN5row_t8free_rowEv(ptr noundef nonnull align 8 dereferenceable(64) %13)
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.MVHisEntry, ptr %14, i32 0, i32 1
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  call void @_ZN9mem_alloc4freeEPvm(ptr noundef nonnull align 1 dereferenceable(1) @mem_allocator, ptr noundef %16, i64 noundef 64)
  br label %17

17:                                               ; preds = %10, %2
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN9mem_alloc4freeEPvm(ptr noundef nonnull align 1 dereferenceable(1) @mem_allocator, ptr noundef %18, i64 noundef 32)
  ret void
}

attributes #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 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, !6, i64 8}
!10 = !{!"_ZTS10MVHisEntry", !11, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!"long", !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"

%class.mem_alloc = type { i8 }

@mem_allocator = external global %class.mem_alloc, align 1

declare void @_ZN5row_t8free_rowEv(ptr noundef nonnull align 8 dereferenceable(64)) local_unnamed_addr #0

declare void @_ZN9mem_alloc4freeEPvm(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8Row_mvcc16return_his_entryEP10MVHisEntry(ptr nocapture noundef nonnull readnone align 8 dereferenceable(104) %0, ptr noundef %1) local_unnamed_addr #1 align 2 {
  %3 = getelementptr inbounds i8, ptr %1, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %7, label %5

5:                                                ; preds = %2
  tail call void @_ZN5row_t8free_rowEv(ptr noundef nonnull align 8 dereferenceable(64) %4)
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  tail call void @_ZN9mem_alloc4freeEPvm(ptr noundef nonnull align 1 dereferenceable(1) @mem_allocator, ptr noundef %6, i64 noundef 64)
  br label %7

7:                                                ; preds = %5, %2
  tail call void @_ZN9mem_alloc4freeEPvm(ptr noundef nonnull align 1 dereferenceable(1) @mem_allocator, ptr noundef nonnull %1, i64 noundef 32)
  ret void
}

attributes #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 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, !10, i64 8}
!6 = !{!"_ZTS10MVHisEntry", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}


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