; LLVM IR from jrouwe/JoltPhysics :: TestFramework/Application/DebugUI.ll (ZN7DebugUI10BackToMainEv)

; 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.DebugUI = type { ptr, %"class.JPH::RefConst", %"class.JPH::RefConst.0" }
%"class.JPH::RefConst" = type { ptr }
%"class.JPH::RefConst.0" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7DebugUI10BackToMainEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  br label %4

4:                                                ; preds = %9, %1
  %5 = getelementptr inbounds %class.DebugUI, ptr %3, i32 0, i32 0
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = call noundef i32 @_ZNK9UIManager12GetNumLayersEv(ptr noundef nonnull align 8 dereferenceable(248) %6)
  %8 = icmp sgt i32 %7, 2
  br i1 %8, label %9, label %12

9:                                                ; preds = %4
  %10 = getelementptr inbounds %class.DebugUI, ptr %3, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  call void @_ZN9UIManager8PopLayerEv(ptr noundef nonnull align 8 dereferenceable(248) %11)
  br label %4, !llvm.loop !13

12:                                               ; preds = %4
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZNK9UIManager12GetNumLayersEv(ptr noundef nonnull align 8 dereferenceable(248)) #0 align 2

declare void @_ZN9UIManager8PopLayerEv(ptr noundef nonnull align 8 dereferenceable(248)) #1

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" }
attributes #1 = { "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 0}
!10 = !{!"_ZTS7DebugUI", !6, i64 0, !11, i64 8, !12, i64 16}
!11 = !{!"_ZTSN3JPH8RefConstI4FontEE", !6, i64 0}
!12 = !{!"_ZTSN3JPH8RefConstI7TextureEE", !6, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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 uwtable
define dso_local void @_ZN7DebugUI10BackToMainEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) local_unnamed_addr #0 align 2 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %3 = tail call noundef i32 @_ZNK9UIManager12GetNumLayersEv(ptr noundef nonnull align 8 dereferenceable(248) %2)
  %4 = icmp sgt i32 %3, 2
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %5 = load ptr, ptr %0, align 8, !tbaa !5
  tail call void @_ZN9UIManager8PopLayerEv(ptr noundef nonnull align 8 dereferenceable(248) %5)
  %6 = load ptr, ptr %0, align 8, !tbaa !5
  %7 = tail call noundef i32 @_ZNK9UIManager12GetNumLayersEv(ptr noundef nonnull align 8 dereferenceable(248) %6)
  %8 = icmp sgt i32 %7, 2
  br i1 %8, label %.lr.ph, label %._crit_edge, !llvm.loop !12

._crit_edge:                                      ; preds = %.lr.ph, %1
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZNK9UIManager12GetNumLayersEv(ptr noundef nonnull align 8 dereferenceable(248)) local_unnamed_addr #0 align 2

declare void @_ZN9UIManager8PopLayerEv(ptr noundef nonnull align 8 dereferenceable(248)) local_unnamed_addr #1

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" }
attributes #1 = { "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, !7, i64 0}
!6 = !{!"_ZTS7DebugUI", !7, i64 0, !10, i64 8, !11, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSN3JPH8RefConstI4FontEE", !7, i64 0}
!11 = !{!"_ZTSN3JPH8RefConstI7TextureEE", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass