; LLVM IR from brpapa/algorithms :: solutions/uri/1517.ll (Z3lisi)

; 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.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.T = type { i32, i32, i32 }

@v = external dso_local global %"class.std::vector", align 8
@memo = external dso_local global %"class.std::vector.0", align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z3lisi(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @memo, i64 noundef %11) #5
  store ptr %12, ptr %4, align 8, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !9
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp ne i32 %14, -1
  br i1 %15, label %16, label %19

16:                                               ; preds = %1
  %17 = load ptr, ptr %4, align 8, !tbaa !9
  %18 = load i32, ptr %17, align 4, !tbaa !5
  store i32 %18, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %84

19:                                               ; preds = %1
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = icmp eq i32 %20, 0
  br i1 %21, label %22, label %23

22:                                               ; preds = %19
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %84

23:                                               ; preds = %19
  %24 = load ptr, ptr %4, align 8, !tbaa !9
  store i32 -2139062143, ptr %24, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %78, %23
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  store i32 2, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %81

30:                                               ; preds = %25
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %32) #5
  %34 = getelementptr inbounds %struct.T, ptr %33, i32 0, i32 2
  %35 = load i32, ptr %34, align 4, !tbaa !11
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %37) #5
  %39 = getelementptr inbounds %struct.T, ptr %38, i32 0, i32 2
  %40 = load i32, ptr %39, align 4, !tbaa !11
  %41 = sub nsw i32 %35, %40
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %43) #5
  %45 = getelementptr inbounds %struct.T, ptr %44, i32 0, i32 0
  %46 = load i32, ptr %45, align 4, !tbaa !13
  %47 = load i32, ptr %3, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %48) #5
  %50 = getelementptr inbounds %struct.T, ptr %49, i32 0, i32 0
  %51 = load i32, ptr %50, align 4, !tbaa !13
  %52 = sub nsw i32 %46, %51
  %53 = call i32 @llvm.abs.i32(i32 %52, i1 true)
  store i32 %53, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %54 = load i32, ptr %6, align 4, !tbaa !5
  %55 = sext i32 %54 to i64
  %56 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %55) #5
  %57 = getelementptr inbounds %struct.T, ptr %56, i32 0, i32 1
  %58 = load i32, ptr %57, align 4, !tbaa !14
  %59 = load i32, ptr %3, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %60) #5
  %62 = getelementptr inbounds %struct.T, ptr %61, i32 0, i32 1
  %63 = load i32, ptr %62, align 4, !tbaa !14
  %64 = sub nsw i32 %58, %63
  %65 = call i32 @llvm.abs.i32(i32 %64, i1 true)
  store i32 %65, ptr %8, align 4, !tbaa !5
  %66 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8)
  %67 = load i32, ptr %66, align 4, !tbaa !5
  %68 = icmp sge i32 %41, %67
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br i1 %68, label %69, label %77

69:                                               ; preds = %30
  %70 = load ptr, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %71 = load i32, ptr %6, align 4, !tbaa !5
  %72 = call noundef i32 @_Z3lisi(i32 noundef %71)
  %73 = add nsw i32 1, %72
  store i32 %73, ptr %9, align 4, !tbaa !5
  %74 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %70, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %75 = load i32, ptr %74, align 4, !tbaa !5
  %76 = load ptr, ptr %4, align 8, !tbaa !9
  store i32 %75, ptr %76, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %77

77:                                               ; preds = %69, %30
  br label %78

78:                                               ; preds = %77
  %79 = load i32, ptr %6, align 4, !tbaa !5
  %80 = add nsw i32 %79, 1
  store i32 %80, ptr %6, align 4, !tbaa !5
  br label %25, !llvm.loop !15

81:                                               ; preds = %29
  %82 = load ptr, ptr %4, align 8, !tbaa !9
  %83 = load i32, ptr %82, align 4, !tbaa !5
  store i32 %83, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %84

84:                                               ; preds = %81, %22, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  %85 = load i32, ptr %2, align 4
  ret i32 %85
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTS1T", !6, i64 0, !6, i64 4, !6, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!12, !6, i64 4}
!15 = distinct !{!15, !16}
!16 = !{!"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.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl" = type { %"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" }
%"struct.std::_Vector_base<T, std::allocator<T>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@v = external dso_local global %"class.std::vector", align 8
@memo = external dso_local global %"class.std::vector.0", align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3lisi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = sext i32 %0 to i64
  %6 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @memo, i64 noundef %5) #4
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %.not = icmp eq i32 %7, -1
  br i1 %.not, label %8, label %._crit_edge

8:                                                ; preds = %1
  %9 = icmp eq i32 %0, 0
  br i1 %9, label %._crit_edge, label %10

10:                                               ; preds = %8
  store i32 -2139062143, ptr %6, align 4, !tbaa !5
  %11 = icmp sgt i32 %0, 0
  br i1 %11, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %10
  %wide.trip.count = zext nneg i32 %0 to i64
  br label %.lr.ph

._crit_edge.loopexit:                             ; preds = %41
  %.pre = load i32, ptr %6, align 4, !tbaa !5
  br label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph.preheader, %41
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %41 ]
  %12 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %5) #4
  %13 = getelementptr inbounds i8, ptr %12, i64 8
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #4
  %16 = getelementptr inbounds i8, ptr %15, i64 8
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = sub nsw i32 %14, %17
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  %19 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #4
  %20 = load i32, ptr %19, align 4, !tbaa !11
  %21 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %5) #4
  %22 = load i32, ptr %21, align 4, !tbaa !11
  %23 = sub nsw i32 %20, %22
  %24 = call i32 @llvm.abs.i32(i32 %23, i1 true)
  store i32 %24, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %25 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %indvars.iv) #4
  %26 = getelementptr inbounds i8, ptr %25, i64 4
  %27 = load i32, ptr %26, align 4, !tbaa !12
  %28 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @v, i64 noundef %5) #4
  %29 = getelementptr inbounds i8, ptr %28, i64 4
  %30 = load i32, ptr %29, align 4, !tbaa !12
  %31 = sub nsw i32 %27, %30
  %32 = call i32 @llvm.abs.i32(i32 %31, i1 true)
  store i32 %32, ptr %3, align 4, !tbaa !5
  %33 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %.not21 = icmp slt i32 %18, %34
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  br i1 %.not21, label %41, label %35

35:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %36 = trunc nuw nsw i64 %indvars.iv to i32
  %37 = call noundef i32 @_Z3lisi(i32 noundef %36)
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %4, align 4, !tbaa !5
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %40 = load i32, ptr %39, align 4, !tbaa !5
  store i32 %40, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  br label %41

41:                                               ; preds = %.lr.ph, %35
  %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.loopexit, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %10, %._crit_edge.loopexit, %8, %1
  %.018 = phi i32 [ %7, %1 ], [ 0, %8 ], [ %.pre, %._crit_edge.loopexit ], [ -2139062143, %10 ]
  ret i32 %.018
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNSt6vectorI1TSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTS1T", !6, i64 0, !6, i64 4, !6, i64 8}
!11 = !{!10, !6, i64 0}
!12 = !{!10, !6, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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