; LLVM IR from PaddlePaddle/Serving :: core/predictor/tools/ocrtools/clipper.ll (ZN10ClipperLib7Clipper18ProcessHorizontalsEv)

; 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"

; 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
define dso_local void @_ZN10ClipperLib7Clipper18ProcessHorizontalsEv(ptr noundef nonnull align 8 dereferenceable(135) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, 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) #2
  br label %5

5:                                                ; preds = %7, %1
  %6 = call noundef zeroext i1 @_ZN10ClipperLib7Clipper14PopEdgeFromSELERPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135) %4, ptr noundef nonnull align 8 dereferenceable(8) %3)
  br i1 %6, label %7, label %9

7:                                                ; preds = %5
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZN10ClipperLib7Clipper17ProcessHorizontalEPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135) %4, ptr noundef %8)
  br label %5, !llvm.loop !9

9:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN10ClipperLib7Clipper14PopEdgeFromSELERPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN10ClipperLib7Clipper17ProcessHorizontalEPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135), ptr noundef) #1 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 = { 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 = distinct !{!9, !10}
!10 = !{!"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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10ClipperLib7Clipper18ProcessHorizontalsEv(ptr noundef nonnull align 8 dereferenceable(135) %0) local_unnamed_addr #1 align 2 {
  %2 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #2
  %3 = call noundef zeroext i1 @_ZN10ClipperLib7Clipper14PopEdgeFromSELERPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135) %0, ptr noundef nonnull align 8 dereferenceable(8) %2)
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  call void @_ZN10ClipperLib7Clipper17ProcessHorizontalEPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135) %0, ptr noundef %4)
  %5 = call noundef zeroext i1 @_ZN10ClipperLib7Clipper14PopEdgeFromSELERPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135) %0, ptr noundef nonnull align 8 dereferenceable(8) %2)
  br i1 %5, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN10ClipperLib7Clipper14PopEdgeFromSELERPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN10ClipperLib7Clipper17ProcessHorizontalEPNS_5TEdgeE(ptr noundef nonnull align 8 dereferenceable(135), ptr noundef) local_unnamed_addr #1 align 2

attributes #0 = { mustprogress 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 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass