; LLVM IR from Devaniti/BoolkaEngine :: ThirdParty/imgui/imgui_draw.ll (ZN11ImFontAtlas10ClearFontsEv)

; 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 { i8, i32, ptr, i32, i32, ptr, ptr, i32, i32, %struct.ImVec2, %struct.ImVec2, %struct.ImVector.8, %struct.ImVector.9, %struct.ImVector.10, [64 x %struct.ImVec4], i32, i32 }
%struct.ImVec2 = type { float, float }
%struct.ImVector.8 = type { i32, i32, ptr }
%struct.ImVector.9 = type { i32, i32, ptr }
%struct.ImVector.10 = type { i32, i32, ptr }
%struct.ImVec4 = type { float, float, float, float }

@.str.1 = external hidden unnamed_addr constant [87 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [90 x i8], align 1
@__PRETTY_FUNCTION__._ZN11ImFontAtlas10ClearFontsEv = external hidden unnamed_addr constant [31 x i8], align 1

; 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: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIP6ImFontEixEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas10ClearFontsEv(ptr noundef nonnull align 8 dereferenceable(1144) %0) #3 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 0
  %6 = load i8, ptr %5, align 8, !tbaa !9, !range !18, !noundef !19
  %7 = trunc i8 %6 to i1
  br i1 %7, label %9, label %8

8:                                                ; preds = %1
  br label %9

9:                                                ; preds = %8, %1
  %10 = phi i1 [ false, %1 ], [ true, %8 ]
  br i1 %10, label %11, label %12

11:                                               ; preds = %9
  br label %14

12:                                               ; preds = %9
  call void @__assert_fail(ptr noundef @.str.8, ptr noundef @.str.1, i32 noundef 1843, ptr noundef @__PRETTY_FUNCTION__._ZN11ImFontAtlas10ClearFontsEv) #5
  unreachable

13:                                               ; No predecessors!
  br label %14

14:                                               ; preds = %13, %11
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 0, ptr %3, align 4, !tbaa !20
  br label %15

15:                                               ; preds = %27, %14
  %16 = load i32, ptr %3, align 4, !tbaa !20
  %17 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 11
  %18 = getelementptr inbounds %struct.ImVector.8, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %18, align 8, !tbaa !21
  %20 = icmp slt i32 %16, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %30

22:                                               ; preds = %15
  %23 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 11
  %24 = load i32, ptr %3, align 4, !tbaa !20
  %25 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIP6ImFontEixEi(ptr noundef nonnull align 8 dereferenceable(16) %23, i32 noundef %24)
  %26 = load ptr, ptr %25, align 8, !tbaa !5
  call void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef %26)
  br label %27

27:                                               ; preds = %22
  %28 = load i32, ptr %3, align 4, !tbaa !20
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %3, align 4, !tbaa !20
  br label %15, !llvm.loop !22

30:                                               ; preds = %21
  %31 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 11
  call void @_ZN8ImVectorIP6ImFontE5clearEv(ptr noundef nonnull align 8 dereferenceable(16) %31)
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef) #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN8ImVectorIP6ImFontE5clearEv(ptr noundef nonnull align 8 dereferenceable(16)) #4 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn 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 = { 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 = { 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 = { 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 #5 = { noreturn nounwind }
attributes #6 = { 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, !11, i64 0}
!10 = !{!"_ZTS11ImFontAtlas", !11, i64 0, !12, i64 4, !6, i64 8, !12, i64 16, !12, i64 20, !6, i64 24, !6, i64 32, !12, i64 40, !12, i64 44, !13, i64 48, !13, i64 56, !15, i64 64, !16, i64 80, !17, i64 96, !7, i64 112, !12, i64 1136, !12, i64 1140}
!11 = !{!"bool", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"_ZTS6ImVec2", !14, i64 0, !14, i64 4}
!14 = !{!"float", !7, i64 0}
!15 = !{!"_ZTS8ImVectorIP6ImFontE", !12, i64 0, !12, i64 4, !6, i64 8}
!16 = !{!"_ZTS8ImVectorI21ImFontAtlasCustomRectE", !12, i64 0, !12, i64 4, !6, i64 8}
!17 = !{!"_ZTS8ImVectorI12ImFontConfigE", !12, i64 0, !12, i64 4, !6, i64 8}
!18 = !{i8 0, i8 2}
!19 = !{}
!20 = !{!12, !12, i64 0}
!21 = !{!10, !12, i64 64}
!22 = distinct !{!22, !23}
!23 = !{!"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"

@.str.1 = external hidden unnamed_addr constant [87 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [90 x i8], align 1
@__PRETTY_FUNCTION__._ZN11ImFontAtlas10ClearFontsEv = external hidden unnamed_addr constant [31 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIP6ImFontEixEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas10ClearFontsEv(ptr noundef nonnull align 8 dereferenceable(1144) %0) local_unnamed_addr #2 align 2 {
  %2 = load i8, ptr %0, align 8, !tbaa !5, !range !17, !noundef !18
  %3 = trunc nuw i8 %2 to i1
  br i1 %3, label %7, label %.preheader

.preheader:                                       ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 64
  %5 = load i32, ptr %4, align 8, !tbaa !19
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

7:                                                ; preds = %1
  tail call void @__assert_fail(ptr noundef nonnull @.str.8, ptr noundef nonnull @.str.1, i32 noundef 1843, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN11ImFontAtlas10ClearFontsEv) #4
  unreachable

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  tail call void @_ZN8ImVectorIP6ImFontE5clearEv(ptr noundef nonnull align 8 dereferenceable(16) %4)
  ret void

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.03 = phi i32 [ %10, %.lr.ph ], [ 0, %.preheader ]
  %8 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIP6ImFontEixEi(ptr noundef nonnull align 8 dereferenceable(16) %4, i32 noundef %.03)
  %9 = load ptr, ptr %8, align 8, !tbaa !20
  tail call void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef %9)
  %10 = add nuw nsw i32 %.03, 1
  %11 = load i32, ptr %4, align 8, !tbaa !19
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !21
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN8ImVectorIP6ImFontE5clearEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #3 align 2

attributes #0 = { noreturn 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 #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 = { 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 #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 = { noreturn 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, !7, i64 0}
!6 = !{!"_ZTS11ImFontAtlas", !7, i64 0, !10, i64 4, !11, i64 8, !10, i64 16, !10, i64 20, !11, i64 24, !11, i64 32, !10, i64 40, !10, i64 44, !12, i64 48, !12, i64 56, !14, i64 64, !15, i64 80, !16, i64 96, !8, i64 112, !10, i64 1136, !10, i64 1140}
!7 = !{!"bool", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"_ZTS6ImVec2", !13, i64 0, !13, i64 4}
!13 = !{!"float", !8, i64 0}
!14 = !{!"_ZTS8ImVectorIP6ImFontE", !10, i64 0, !10, i64 4, !11, i64 8}
!15 = !{!"_ZTS8ImVectorI21ImFontAtlasCustomRectE", !10, i64 0, !10, i64 4, !11, i64 8}
!16 = !{!"_ZTS8ImVectorI12ImFontConfigE", !10, i64 0, !10, i64 4, !11, i64 8}
!17 = !{i8 0, i8 2}
!18 = !{}
!19 = !{!6, !10, i64 64}
!20 = !{!11, !11, i64 0}
!21 = distinct !{!21, !22}
!22 = !{!"llvm.loop.mustprogress"}


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