; LLVM IR from wichue/nethello :: src/base/Logger.ll (ZN3chw9getLoggerEv)

; 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"

@_ZN3chw15g_defaultLoggerE = external dso_local global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(144) ptr @_ZN3chw9getLoggerEv() #0 {
  %1 = load ptr, ptr @_ZN3chw15g_defaultLoggerE, align 8, !tbaa !5
  %2 = icmp ne ptr %1, null
  br i1 %2, label %5, label %3

3:                                                ; preds = %0
  %4 = call noundef nonnull align 8 dereferenceable(144) ptr @_ZN3chw6Logger8InstanceEv()
  store ptr %4, ptr @_ZN3chw15g_defaultLoggerE, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %3, %0
  %6 = load ptr, ptr @_ZN3chw15g_defaultLoggerE, align 8, !tbaa !5
  ret ptr %6
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(144) ptr @_ZN3chw6Logger8InstanceEv() #0 align 2

attributes #0 = { 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"}


; 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"

@_ZN3chw15g_defaultLoggerE = external dso_local local_unnamed_addr global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(144) ptr @_ZN3chw9getLoggerEv() local_unnamed_addr #0 {
  %1 = load ptr, ptr @_ZN3chw15g_defaultLoggerE, align 8, !tbaa !5
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %2, label %4

2:                                                ; preds = %0
  %3 = tail call noundef nonnull align 8 dereferenceable(144) ptr @_ZN3chw6Logger8InstanceEv()
  store ptr %3, ptr @_ZN3chw15g_defaultLoggerE, align 8, !tbaa !5
  br label %4

4:                                                ; preds = %2, %0
  %5 = phi ptr [ %3, %2 ], [ %1, %0 ]
  ret ptr %5
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(144) ptr @_ZN3chw6Logger8InstanceEv() local_unnamed_addr #0 align 2

attributes #0 = { 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"}


; Effective O3 passes: GVNPass,GlobalOptPass,InstCombinePass,TailCallElimPass