; LLVM IR from SSBMTonberry/pocketlzma :: ref_spec/lzma1900/CPP/7zip/Common/UniqBlocks.ll (ZN11CUniqBlocks13GetReverseMapEv)

; 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.CUniqBlocks = type { %class.CObjectVector, %class.CRecordVector.0, %class.CRecordVector.0 }
%class.CObjectVector = type { %class.CRecordVector }
%class.CRecordVector = type { ptr, i32, i32 }
%class.CRecordVector.0 = type { ptr, i32, i32 }

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK13CRecordVectorIjE4SizeEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZN13CRecordVectorIjEixEj(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #1 align 2

; 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 @_ZN11CUniqBlocks13GetReverseMapEv(ptr noundef nonnull align 8 dereferenceable(48) %0) #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %7 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %8 = getelementptr inbounds %struct.CUniqBlocks, ptr %7, i32 0, i32 1
  %9 = call noundef i32 @_ZNK13CRecordVectorIjE4SizeEv(ptr noundef nonnull align 8 dereferenceable(16) %8)
  store i32 %9, ptr %3, align 4, !tbaa !9
  %10 = getelementptr inbounds %struct.CUniqBlocks, ptr %7, i32 0, i32 2
  %11 = load i32, ptr %3, align 4, !tbaa !9
  call void @_ZN13CRecordVectorIjE15ClearAndSetSizeEj(ptr noundef nonnull align 8 dereferenceable(16) %10, i32 noundef %11)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %12 = getelementptr inbounds %struct.CUniqBlocks, ptr %7, i32 0, i32 2
  %13 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZN13CRecordVectorIjEixEj(ptr noundef nonnull align 8 dereferenceable(16) %12, i32 noundef 0)
  store ptr %13, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %14 = getelementptr inbounds %struct.CUniqBlocks, ptr %7, i32 0, i32 1
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZN13CRecordVectorIjEixEj(ptr noundef nonnull align 8 dereferenceable(16) %14, i32 noundef 0)
  store ptr %15, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %31, %1
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = load i32, ptr %3, align 4, !tbaa !9
  %19 = icmp ult i32 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %34

21:                                               ; preds = %16
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = zext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %24, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %23, i64 %29
  store i32 %22, ptr %30, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %21
  %32 = load i32, ptr %6, align 4, !tbaa !9
  %33 = add i32 %32, 1
  store i32 %33, ptr %6, align 4, !tbaa !9
  br label %16, !llvm.loop !11

34:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN13CRecordVectorIjE15ClearAndSetSizeEj(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK13CRecordVectorIjE4SizeEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZN13CRecordVectorIjEixEj(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11CUniqBlocks13GetReverseMapEv(ptr noundef nonnull align 8 dereferenceable(48) %0) local_unnamed_addr #1 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = tail call noundef i32 @_ZNK13CRecordVectorIjE4SizeEv(ptr noundef nonnull align 8 dereferenceable(16) %2)
  %4 = getelementptr inbounds i8, ptr %0, i64 32
  tail call void @_ZN13CRecordVectorIjE15ClearAndSetSizeEj(ptr noundef nonnull align 8 dereferenceable(16) %4, i32 noundef %3)
  %5 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZN13CRecordVectorIjEixEj(ptr noundef nonnull align 8 dereferenceable(16) %4, i32 noundef 0)
  %6 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZN13CRecordVectorIjEixEj(ptr noundef nonnull align 8 dereferenceable(16) %2, i32 noundef 0)
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %1
  %wide.trip.count = zext i32 %3 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %7 = icmp ult i32 %3, 4
  br i1 %7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 4294967292
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.3, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %8 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv.epil
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = zext i32 %9 to i64
  %11 = getelementptr inbounds i32, ptr %5, i64 %10
  %12 = trunc nuw i64 %indvars.iv.epil to i32
  store i32 %12, ptr %11, align 4, !tbaa !5
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !9

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %1
  ret void

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.3, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %13 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = zext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr %5, i64 %15
  %17 = trunc nuw i64 %indvars.iv to i32
  store i32 %17, ptr %16, align 4, !tbaa !5
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %18 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv.next
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds i32, ptr %5, i64 %20
  %22 = trunc nuw i64 %indvars.iv.next to i32
  store i32 %22, ptr %21, align 4, !tbaa !5
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %23 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv.next.1
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = zext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %5, i64 %25
  %27 = trunc nuw i64 %indvars.iv.next.1 to i32
  store i32 %27, ptr %26, align 4, !tbaa !5
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %28 = getelementptr inbounds i32, ptr %6, i64 %indvars.iv.next.2
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = zext i32 %29 to i64
  %31 = getelementptr inbounds i32, ptr %5, i64 %30
  %32 = trunc nuw i64 %indvars.iv.next.2 to i32
  store i32 %32, ptr %31, align 4, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !11
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN13CRecordVectorIjE15ClearAndSetSizeEj(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #1 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" }
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" }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.unroll.disable"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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