; LLVM IR from DarrenSweeney/3D-Physics-Engine :: Physics Engine/Imgui/imgui.ll (ZN11ImFontAtlas14ClearInputDataEv)

; 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.ImFontAtlas = type { ptr, ptr, ptr, i32, i32, %struct.ImVec2, %struct.ImVec2, %class.ImVector, %class.ImVector.0 }
%struct.ImVec2 = type { float, float }
%class.ImVector = type { i64, i64, ptr }
%class.ImVector.0 = type { i64, i64, ptr }
%"struct.ImFontAtlas::ImFontAtlasData" = type { ptr, ptr, i64, float, ptr, i32, %struct.stbtt_fontinfo, ptr, ptr, i32 }
%struct.stbtt_fontinfo = type { ptr, ptr, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }

; 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: mustprogress uwtable
declare dso_local void @_ZN5ImGui7MemFreeEPv(ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas14ClearInputDataEv(ptr noundef nonnull align 8 dereferenceable(96) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  store i64 0, ptr %3, align 8, !tbaa !9
  br label %5

5:                                                ; preds = %31, %1
  %6 = load i64, ptr %3, align 8, !tbaa !9
  %7 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 8
  %8 = call noundef i64 @_ZNK8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7)
  %9 = icmp ult i64 %6, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  br label %34

11:                                               ; preds = %5
  %12 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 8
  %13 = load i64, ptr %3, align 8, !tbaa !9
  %14 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %13)
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  %16 = getelementptr inbounds %"struct.ImFontAtlas::ImFontAtlasData", ptr %15, i32 0, i32 1
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  %18 = icmp ne ptr %17, null
  br i1 %18, label %19, label %26

19:                                               ; preds = %11
  %20 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 8
  %21 = load i64, ptr %3, align 8, !tbaa !9
  %22 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %20, i64 noundef %21)
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = getelementptr inbounds %"struct.ImFontAtlas::ImFontAtlasData", ptr %23, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  call void @_ZN5ImGui7MemFreeEPv(ptr noundef %25)
  br label %26

26:                                               ; preds = %19, %11
  %27 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 8
  %28 = load i64, ptr %3, align 8, !tbaa !9
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %27, i64 noundef %28)
  %30 = load ptr, ptr %29, align 8, !tbaa !5
  call void @_ZN5ImGui7MemFreeEPv(ptr noundef %30)
  br label %31

31:                                               ; preds = %26
  %32 = load i64, ptr %3, align 8, !tbaa !9
  %33 = add i64 %32, 1
  store i64 %33, ptr %3, align 8, !tbaa !9
  br label %5, !llvm.loop !16

34:                                               ; preds = %10
  %35 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 8
  call void @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %35)
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #2 = { inlinehint mustprogress 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 #3 = { inlinehint 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 #4 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTSN11ImFontAtlas15ImFontAtlasDataE", !6, i64 0, !6, i64 8, !10, i64 16, !13, i64 24, !6, i64 32, !14, i64 40, !15, i64 48, !6, i64 104, !6, i64 112, !14, i64 120}
!13 = !{!"float", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!"_ZTS14stbtt_fontinfo", !6, i64 0, !6, i64 8, !14, i64 16, !14, i64 20, !14, i64 24, !14, i64 28, !14, i64 32, !14, i64 36, !14, i64 40, !14, i64 44, !14, i64 48, !14, i64 52}
!16 = distinct !{!16, !17}
!17 = !{!"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
declare dso_local void @_ZN5ImGui7MemFreeEPv(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas14ClearInputDataEv(ptr noundef nonnull align 8 dereferenceable(96) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 72
  %3 = tail call noundef i64 @_ZNK8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2)
  %.not6 = icmp eq i64 %3, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %13, %1
  tail call void @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %2)
  ret void

.lr.ph:                                           ; preds = %1, %13
  %.05 = phi i64 [ %16, %13 ], [ 0, %1 ]
  %4 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.05)
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %.not = icmp eq ptr %7, null
  br i1 %.not, label %13, label %8

8:                                                ; preds = %.lr.ph
  %9 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.05)
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %10, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  tail call void @_ZN5ImGui7MemFreeEPv(ptr noundef %12)
  br label %13

13:                                               ; preds = %8, %.lr.ph
  %14 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.05)
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  tail call void @_ZN5ImGui7MemFreeEPv(ptr noundef %15)
  %16 = add nuw i64 %.05, 1
  %17 = tail call noundef i64 @_ZNK8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2)
  %18 = icmp ult i64 %16, %17
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !15
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN8ImVectorIPN11ImFontAtlas15ImFontAtlasDataEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 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" }
attributes #1 = { inlinehint mustprogress 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 = { inlinehint 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 = !{!"_ZTSN11ImFontAtlas15ImFontAtlasDataE", !6, i64 0, !6, i64 8, !11, i64 16, !12, i64 24, !6, i64 32, !13, i64 40, !14, i64 48, !6, i64 104, !6, i64 112, !13, i64 120}
!11 = !{!"long", !7, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!"_ZTS14stbtt_fontinfo", !6, i64 0, !6, i64 8, !13, i64 16, !13, i64 20, !13, i64 24, !13, i64 28, !13, i64 32, !13, i64 36, !13, i64 40, !13, i64 44, !13, i64 48, !13, i64 52}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass