; LLVM IR from Devaniti/BoolkaEngine :: ThirdParty/imgui/imgui_draw.ll (ZN11ImFontAtlas12ClearTexDataEv)

; 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__._ZN11ImFontAtlas12ClearTexDataEv = external hidden unnamed_addr constant [33 x i8], align 1

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

declare void @_ZN5ImGui7MemFreeEPv(ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas12ClearTexDataEv(ptr noundef nonnull align 8 dereferenceable(1144) %0) #2 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 0
  %5 = load i8, ptr %4, align 8, !tbaa !9, !range !18, !noundef !19
  %6 = trunc i8 %5 to i1
  br i1 %6, label %8, label %7

7:                                                ; preds = %1
  br label %8

8:                                                ; preds = %7, %1
  %9 = phi i1 [ false, %1 ], [ true, %7 ]
  br i1 %9, label %10, label %11

10:                                               ; preds = %8
  br label %13

11:                                               ; preds = %8
  call void @__assert_fail(ptr noundef @.str.8, ptr noundef @.str.1, i32 noundef 1832, ptr noundef @__PRETTY_FUNCTION__._ZN11ImFontAtlas12ClearTexDataEv) #3
  unreachable

12:                                               ; No predecessors!
  br label %13

13:                                               ; preds = %12, %10
  %14 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 5
  %15 = load ptr, ptr %14, align 8, !tbaa !20
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %20

17:                                               ; preds = %13
  %18 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 5
  %19 = load ptr, ptr %18, align 8, !tbaa !20
  call void @_ZN5ImGui7MemFreeEPv(ptr noundef %19)
  br label %20

20:                                               ; preds = %17, %13
  %21 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 6
  %22 = load ptr, ptr %21, align 8, !tbaa !21
  %23 = icmp ne ptr %22, null
  br i1 %23, label %24, label %27

24:                                               ; preds = %20
  %25 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 6
  %26 = load ptr, ptr %25, align 8, !tbaa !21
  call void @_ZN5ImGui7MemFreeEPv(ptr noundef %26)
  br label %27

27:                                               ; preds = %24, %20
  %28 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 5
  store ptr null, ptr %28, align 8, !tbaa !20
  %29 = getelementptr inbounds %struct.ImFontAtlas, ptr %3, i32 0, i32 6
  store ptr null, ptr %29, align 8, !tbaa !21
  ret void
}

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 = { "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 = { 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, !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 = !{!10, !6, i64 24}
!21 = !{!10, !6, i64 32}


; 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__._ZN11ImFontAtlas12ClearTexDataEv = external hidden unnamed_addr constant [33 x i8], align 1

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

declare void @_ZN5ImGui7MemFreeEPv(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas12ClearTexDataEv(ptr nocapture 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 %4, label %5

4:                                                ; preds = %1
  tail call void @__assert_fail(ptr noundef nonnull @.str.8, ptr noundef nonnull @.str.1, i32 noundef 1832, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN11ImFontAtlas12ClearTexDataEv) #4
  unreachable

5:                                                ; preds = %1
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  %7 = load ptr, ptr %6, align 8, !tbaa !19
  %.not = icmp eq ptr %7, null
  br i1 %.not, label %9, label %8

8:                                                ; preds = %5
  tail call void @_ZN5ImGui7MemFreeEPv(ptr noundef nonnull %7)
  br label %9

9:                                                ; preds = %8, %5
  %10 = getelementptr inbounds i8, ptr %0, i64 32
  %11 = load ptr, ptr %10, align 8, !tbaa !20
  %.not2 = icmp eq ptr %11, null
  br i1 %.not2, label %13, label %12

12:                                               ; preds = %9
  tail call void @_ZN5ImGui7MemFreeEPv(ptr noundef nonnull %11)
  br label %13

13:                                               ; preds = %12, %9
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %6, i8 0, i64 16, i1 false)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

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 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !11, i64 24}
!20 = !{!6, !11, i64 32}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass