; LLVM IR from mncoppola/rpef :: utilities_src/squashfs2.1/lzma/C/7zip/Compress/LZMA (LZMAEncoder)

; 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"

%"class.NCompress::NLZMA::NLength::CEncoder" = type { %"class.NCompress::NRangeCoder::CBitEncoder", %"class.NCompress::NRangeCoder::CBitEncoder", [16 x %"class.NCompress::NRangeCoder::CBitTreeEncoder"], [16 x %"class.NCompress::NRangeCoder::CBitTreeEncoder"], %"class.NCompress::NRangeCoder::CBitTreeEncoder.4" }
%"class.NCompress::NRangeCoder::CBitEncoder" = type { %"class.NCompress::NRangeCoder::CBitModel" }
%"class.NCompress::NRangeCoder::CBitModel" = type { i32 }
%"class.NCompress::NRangeCoder::CBitTreeEncoder" = type { [8 x %"class.NCompress::NRangeCoder::CBitEncoder"] }
%"class.NCompress::NRangeCoder::CBitTreeEncoder.4" = type { [256 x %"class.NCompress::NRangeCoder::CBitEncoder"] }

; 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 @_ZN9NCompress5NLZMA7NLength8CEncoder4InitEj(ptr noundef nonnull align 4 dereferenceable(2056) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8
  %7 = getelementptr inbounds %"class.NCompress::NLZMA::NLength::CEncoder", ptr %6, i32 0, i32 0
  call void @_ZN9NCompress11NRangeCoder9CBitModelILi5EE4InitEv(ptr noundef nonnull align 4 dereferenceable(4) %7)
  %8 = getelementptr inbounds %"class.NCompress::NLZMA::NLength::CEncoder", ptr %6, i32 0, i32 1
  call void @_ZN9NCompress11NRangeCoder9CBitModelILi5EE4InitEv(ptr noundef nonnull align 4 dereferenceable(4) %8)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %23, %2
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp ult i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %26

14:                                               ; preds = %9
  %15 = getelementptr inbounds %"class.NCompress::NLZMA::NLength::CEncoder", ptr %6, i32 0, i32 2
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = zext i32 %16 to i64
  %18 = getelementptr inbounds [16 x %"class.NCompress::NRangeCoder::CBitTreeEncoder"], ptr %15, i64 0, i64 %17
  call void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi3EE4InitEv(ptr noundef nonnull align 4 dereferenceable(32) %18)
  %19 = getelementptr inbounds %"class.NCompress::NLZMA::NLength::CEncoder", ptr %6, i32 0, i32 3
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = zext i32 %20 to i64
  %22 = getelementptr inbounds [16 x %"class.NCompress::NRangeCoder::CBitTreeEncoder"], ptr %19, i64 0, i64 %21
  call void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi3EE4InitEv(ptr noundef nonnull align 4 dereferenceable(32) %22)
  br label %23

23:                                               ; preds = %14
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = add i32 %24, 1
  store i32 %25, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !11

26:                                               ; preds = %13
  %27 = getelementptr inbounds %"class.NCompress::NLZMA::NLength::CEncoder", ptr %6, i32 0, i32 4
  call void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi8EE4InitEv(ptr noundef nonnull align 4 dereferenceable(1024) %27)
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9NCompress11NRangeCoder9CBitModelILi5EE4InitEv(ptr noundef nonnull align 4 dereferenceable(4)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi3EE4InitEv(ptr noundef nonnull align 4 dereferenceable(32)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi8EE4InitEv(ptr noundef nonnull align 4 dereferenceable(1024)) #2 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 = { 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 = { 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 = distinct !{!11, !12}
!12 = !{!"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"

%"class.NCompress::NRangeCoder::CBitTreeEncoder" = type { [8 x %"class.NCompress::NRangeCoder::CBitEncoder"] }
%"class.NCompress::NRangeCoder::CBitEncoder" = type { %"class.NCompress::NRangeCoder::CBitModel" }
%"class.NCompress::NRangeCoder::CBitModel" = type { i32 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN9NCompress5NLZMA7NLength8CEncoder4InitEj(ptr noundef nonnull align 4 dereferenceable(2056) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  tail call void @_ZN9NCompress11NRangeCoder9CBitModelILi5EE4InitEv(ptr noundef nonnull align 4 dereferenceable(4) %0)
  %3 = getelementptr inbounds i8, ptr %0, i64 4
  tail call void @_ZN9NCompress11NRangeCoder9CBitModelILi5EE4InitEv(ptr noundef nonnull align 4 dereferenceable(4) %3)
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = getelementptr inbounds i8, ptr %0, i64 520
  %wide.trip.count = zext i32 %1 to i64
  br label %7

._crit_edge:                                      ; preds = %7, %2
  %6 = getelementptr inbounds i8, ptr %0, i64 1032
  tail call void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi8EE4InitEv(ptr noundef nonnull align 4 dereferenceable(1024) %6)
  ret void

7:                                                ; preds = %.lr.ph, %7
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %7 ]
  %8 = getelementptr inbounds [16 x %"class.NCompress::NRangeCoder::CBitTreeEncoder"], ptr %4, i64 0, i64 %indvars.iv
  tail call void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi3EE4InitEv(ptr noundef nonnull align 4 dereferenceable(32) %8)
  %9 = getelementptr inbounds [16 x %"class.NCompress::NRangeCoder::CBitTreeEncoder"], ptr %5, i64 0, i64 %indvars.iv
  tail call void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi3EE4InitEv(ptr noundef nonnull align 4 dereferenceable(32) %9)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %7, !llvm.loop !5
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9NCompress11NRangeCoder9CBitModelILi5EE4InitEv(ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi3EE4InitEv(ptr noundef nonnull align 4 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9NCompress11NRangeCoder15CBitTreeEncoderILi5ELi8EE4InitEv(ptr noundef nonnull align 4 dereferenceable(1024)) local_unnamed_addr #0 align 2

attributes #0 = { 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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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