; LLVM IR from Eukky/TRender :: lib/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 <{ i32, [4 x i8], ptr, i32, i32, ptr, ptr, i32, i32, %struct.ImVec2, %struct.ImVec2, %class.ImVector.8, %class.ImVector.9, %class.ImVector.10, [1 x i32], [4 x i8] }>
%struct.ImVec2 = type { float, float }
%class.ImVector.8 = type { i32, i32, ptr }
%class.ImVector.9 = type { i32, i32, ptr }
%class.ImVector.10 = type { i32, i32, ptr }

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

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas10ClearFontsEv(ptr noundef nonnull align 8 dereferenceable(116) %0) #2 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %5

5:                                                ; preds = %17, %1
  %6 = load i32, ptr %3, align 4, !tbaa !9
  %7 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 11
  %8 = getelementptr inbounds %class.ImVector.8, ptr %7, i32 0, i32 0
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = icmp slt i32 %6, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %20

12:                                               ; preds = %5
  %13 = getelementptr inbounds %struct.ImFontAtlas, ptr %4, i32 0, i32 11
  %14 = load i32, ptr %3, align 4, !tbaa !9
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIP6ImFontEixEi(ptr noundef nonnull align 8 dereferenceable(16) %13, i32 noundef %14)
  %16 = load ptr, ptr %15, align 8, !tbaa !5
  call void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef %16)
  br label %17

17:                                               ; preds = %12
  %18 = load i32, ptr %3, align 4, !tbaa !9
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %3, align 4, !tbaa !9
  br label %5, !llvm.loop !18

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

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

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 64}
!12 = !{!"_ZTS11ImFontAtlas", !10, i64 0, !6, i64 8, !10, i64 16, !10, i64 20, !6, i64 24, !6, i64 32, !10, i64 40, !10, i64 44, !13, i64 48, !13, i64 56, !15, i64 64, !16, i64 80, !17, i64 96, !7, i64 112}
!13 = !{!"_ZTS6ImVec2", !14, i64 0, !14, i64 4}
!14 = !{!"float", !7, i64 0}
!15 = !{!"_ZTS8ImVectorIP6ImFontE", !10, i64 0, !10, i64 4, !6, i64 8}
!16 = !{!"_ZTS8ImVectorIN11ImFontAtlas10CustomRectEE", !10, i64 0, !10, i64 4, !6, i64 8}
!17 = !{!"_ZTS8ImVectorI12ImFontConfigE", !10, i64 0, !10, i64 4, !6, i64 8}
!18 = distinct !{!18, !19}
!19 = !{!"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: 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 #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11ImFontAtlas10ClearFontsEv(ptr noundef nonnull align 8 dereferenceable(116) %0) local_unnamed_addr #1 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 64
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  tail call void @_ZN8ImVectorIP6ImFontE5clearEv(ptr noundef nonnull align 8 dereferenceable(16) %2)
  ret void

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.03 = phi i32 [ %7, %.lr.ph ], [ 0, %1 ]
  %5 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZN8ImVectorIP6ImFontEixEi(ptr noundef nonnull align 8 dereferenceable(16) %2, i32 noundef %.03)
  %6 = load ptr, ptr %5, align 8, !tbaa !16
  tail call void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef %6)
  %7 = add nuw nsw i32 %.03, 1
  %8 = load i32, ptr %2, align 8, !tbaa !5
  %9 = icmp slt i32 %7, %8
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !17
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z9IM_DELETEI6ImFontEvPT_(ptr noundef) local_unnamed_addr #1

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

attributes #0 = { 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 #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 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, !7, i64 64}
!6 = !{!"_ZTS11ImFontAtlas", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 20, !10, i64 24, !10, i64 32, !7, i64 40, !7, i64 44, !11, i64 48, !11, i64 56, !13, i64 64, !14, i64 80, !15, i64 96, !8, i64 112}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"_ZTS6ImVec2", !12, i64 0, !12, i64 4}
!12 = !{!"float", !8, i64 0}
!13 = !{!"_ZTS8ImVectorIP6ImFontE", !7, i64 0, !7, i64 4, !10, i64 8}
!14 = !{!"_ZTS8ImVectorIN11ImFontAtlas10CustomRectEE", !7, i64 0, !7, i64 4, !10, i64 8}
!15 = !{!"_ZTS8ImVectorI12ImFontConfigE", !7, i64 0, !7, i64 4, !10, i64 8}
!16 = !{!10, !10, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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