; LLVM IR from dcajasn/Riskfolio-Lib :: lib/spectra-1.0.1/test/GenEigs.ll (Z15gen_sparse_dataid)

; 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.Eigen::SparseMatrix" = type { %"class.Eigen::SparseCompressedBase", i64, i64, ptr, ptr, %"class.Eigen::internal::CompressedStorage" }
%"class.Eigen::SparseCompressedBase" = type { %"class.Eigen::SparseMatrixBase" }
%"class.Eigen::SparseMatrixBase" = type { i8 }
%"class.Eigen::internal::CompressedStorage" = type { ptr, ptr, i64, i64 }
%"class.std::linear_congruential_engine" = type { i64 }
%"class.std::uniform_real_distribution" = type { %"struct.std::uniform_real_distribution<>::param_type" }
%"struct.std::uniform_real_distribution<>::param_type" = type { double, double }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z15gen_sparse_dataid(ptr dead_on_unwind noalias writable sret(%"class.Eigen::SparseMatrix") align 8 %0, i32 noundef %1, double noundef %2) #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  %7 = alloca i1, align 1
  %8 = alloca %"class.std::linear_congruential_engine", align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %"class.std::uniform_real_distribution", align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  store ptr %0, ptr %4, align 8
  store i32 %1, ptr %5, align 4, !tbaa !5
  store double %2, ptr %6, align 8, !tbaa !9
  store i1 false, ptr %7, align 1
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  call void @_ZN5Eigen12SparseMatrixIdLi0EiEC2Ell(ptr noundef nonnull align 8 dereferenceable(72) %0, i64 noundef %16, i64 noundef %18)
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  invoke void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EEC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %8)
          to label %19 unwind label %27

19:                                               ; preds = %3
  invoke void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EE4seedEm(ptr noundef nonnull align 8 dereferenceable(8) %8, i64 noundef 0)
          to label %20 unwind label %27

20:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 16, ptr %11) #4
  invoke void @_ZNSt25uniform_real_distributionIdEC2Edd(ptr noundef nonnull align 8 dereferenceable(16) %11, double noundef 0.000000e+00, double noundef 1.000000e+00)
          to label %21 unwind label %31

21:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 0, ptr %12, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %65, %21
  %23 = load i32, ptr %12, align 4, !tbaa !5
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %35, label %26

26:                                               ; preds = %22
  store i32 2, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %68

27:                                               ; preds = %19, %3
  %28 = landingpad { ptr, i32 }
          cleanup
  %29 = extractvalue { ptr, i32 } %28, 0
  store ptr %29, ptr %9, align 8
  %30 = extractvalue { ptr, i32 } %28, 1
  store i32 %30, ptr %10, align 4
  br label %71

31:                                               ; preds = %20
  %32 = landingpad { ptr, i32 }
          cleanup
  %33 = extractvalue { ptr, i32 } %32, 0
  store ptr %33, ptr %9, align 8
  %34 = extractvalue { ptr, i32 } %32, 1
  store i32 %34, ptr %10, align 4
  br label %70

35:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  store i32 0, ptr %14, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %61, %35
  %37 = load i32, ptr %14, align 4, !tbaa !5
  %38 = load i32, ptr %5, align 4, !tbaa !5
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %41, label %40

40:                                               ; preds = %36
  store i32 5, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %64

41:                                               ; preds = %36
  %42 = invoke noundef double @_ZNSt25uniform_real_distributionIdEclISt26linear_congruential_engineImLm16807ELm0ELm2147483647EEEEdRT_(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef nonnull align 8 dereferenceable(8) %8)
          to label %43 unwind label %56

43:                                               ; preds = %41
  %44 = load double, ptr %6, align 8, !tbaa !9
  %45 = fcmp olt double %42, %44
  br i1 %45, label %46, label %60

46:                                               ; preds = %43
  %47 = invoke noundef double @_ZNSt25uniform_real_distributionIdEclISt26linear_congruential_engineImLm16807ELm0ELm2147483647EEEEdRT_(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef nonnull align 8 dereferenceable(8) %8)
          to label %48 unwind label %56

48:                                               ; preds = %46
  %49 = fsub double %47, 5.000000e-01
  %50 = load i32, ptr %12, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = load i32, ptr %14, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZN5Eigen12SparseMatrixIdLi0EiE6insertEll(ptr noundef nonnull align 8 dereferenceable(72) %0, i64 noundef %51, i64 noundef %53)
          to label %55 unwind label %56

55:                                               ; preds = %48
  store double %49, ptr %54, align 8, !tbaa !9
  br label %60

56:                                               ; preds = %48, %46, %41
  %57 = landingpad { ptr, i32 }
          cleanup
  %58 = extractvalue { ptr, i32 } %57, 0
  store ptr %58, ptr %9, align 8
  %59 = extractvalue { ptr, i32 } %57, 1
  store i32 %59, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %70

60:                                               ; preds = %55, %43
  br label %61

61:                                               ; preds = %60
  %62 = load i32, ptr %14, align 4, !tbaa !5
  %63 = add nsw i32 %62, 1
  store i32 %63, ptr %14, align 4, !tbaa !5
  br label %36, !llvm.loop !11

64:                                               ; preds = %40
  br label %65

65:                                               ; preds = %64
  %66 = load i32, ptr %12, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %12, align 4, !tbaa !5
  br label %22, !llvm.loop !13

68:                                               ; preds = %26
  store i1 true, ptr %7, align 1
  store i32 1, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %69 = load i1, ptr %7, align 1
  br i1 %69, label %73, label %72

70:                                               ; preds = %56, %31
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #4
  br label %71

71:                                               ; preds = %70, %27
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @_ZN5Eigen12SparseMatrixIdLi0EiED2Ev(ptr noundef nonnull align 8 dereferenceable(72) %0) #4
  br label %74

72:                                               ; preds = %68
  call void @_ZN5Eigen12SparseMatrixIdLi0EiED2Ev(ptr noundef nonnull align 8 dereferenceable(72) %0) #4
  br label %73

73:                                               ; preds = %72, %68
  ret void

74:                                               ; preds = %71
  %75 = load ptr, ptr %9, align 8
  %76 = load i32, ptr %10, align 4
  %77 = insertvalue { ptr, i32 } poison, ptr %75, 0
  %78 = insertvalue { ptr, i32 } %77, i32 %76, 1
  resume { ptr, i32 } %78
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN5Eigen12SparseMatrixIdLi0EiEC2Ell(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef, i64 noundef) unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EEC2Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EE4seedEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt25uniform_real_distributionIdEC2Edd(ptr noundef nonnull align 8 dereferenceable(16), double noundef, double noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef double @_ZNSt25uniform_real_distributionIdEclISt26linear_congruential_engineImLm16807ELm0ELm2147483647EEEEdRT_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN5Eigen12SparseMatrixIdLi0EiE6insertEll(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef, i64 noundef) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5Eigen12SparseMatrixIdLi0EiED2Ev(ptr noundef nonnull align 8 dereferenceable(72)) unnamed_addr #3 align 2

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 = { 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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.Eigen::SparseMatrix" = type { %"class.Eigen::SparseCompressedBase", i64, i64, ptr, ptr, %"class.Eigen::internal::CompressedStorage" }
%"class.Eigen::SparseCompressedBase" = type { %"class.Eigen::SparseMatrixBase" }
%"class.Eigen::SparseMatrixBase" = type { i8 }
%"class.Eigen::internal::CompressedStorage" = type { ptr, ptr, i64, i64 }
%"class.std::linear_congruential_engine" = type { i64 }
%"class.std::uniform_real_distribution" = type { %"struct.std::uniform_real_distribution<>::param_type" }
%"struct.std::uniform_real_distribution<>::param_type" = type { double, double }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z15gen_sparse_dataid(ptr dead_on_unwind noalias nonnull writable sret(%"class.Eigen::SparseMatrix") align 8 %0, i32 noundef %1, double noundef %2) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::linear_congruential_engine", align 8
  %5 = alloca %"class.std::uniform_real_distribution", align 8
  %6 = sext i32 %1 to i64
  tail call void @_ZN5Eigen12SparseMatrixIdLi0EiEC2Ell(ptr noundef nonnull align 8 dereferenceable(72) %0, i64 noundef %6, i64 noundef %6)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  invoke void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EEC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %7 unwind label %22

7:                                                ; preds = %3
  invoke void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EE4seedEm(ptr noundef nonnull align 8 dereferenceable(8) %4, i64 noundef 0)
          to label %8 unwind label %22

8:                                                ; preds = %7
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %5) #4
  invoke void @_ZNSt25uniform_real_distributionIdEC2Edd(ptr noundef nonnull align 8 dereferenceable(16) %5, double noundef 0.000000e+00, double noundef 1.000000e+00)
          to label %.preheader20 unwind label %24

.preheader20:                                     ; preds = %8
  %9 = icmp sgt i32 %1, 0
  br i1 %9, label %.preheader.us.preheader, label %._crit_edge23

.preheader.us.preheader:                          ; preds = %.preheader20
  %wide.trip.count28 = zext nneg i32 %1 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv25 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next26, %._crit_edge.us ]
  br label %10

10:                                               ; preds = %.preheader.us, %20
  %indvars.iv = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next, %20 ]
  %11 = invoke noundef double @_ZNSt25uniform_real_distributionIdEclISt26linear_congruential_engineImLm16807ELm0ELm2147483647EEEEdRT_(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %12 unwind label %.split.us

12:                                               ; preds = %10
  %13 = fcmp olt double %11, %2
  br i1 %13, label %14, label %20

14:                                               ; preds = %12
  %15 = invoke noundef double @_ZNSt25uniform_real_distributionIdEclISt26linear_congruential_engineImLm16807ELm0ELm2147483647EEEEdRT_(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %16 unwind label %.split.us

16:                                               ; preds = %14
  %17 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZN5Eigen12SparseMatrixIdLi0EiE6insertEll(ptr noundef nonnull align 8 dereferenceable(72) %0, i64 noundef %indvars.iv25, i64 noundef %indvars.iv)
          to label %18 unwind label %.split.us

18:                                               ; preds = %16
  %19 = fadd double %15, -5.000000e-01
  store double %19, ptr %17, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %18, %12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count28
  br i1 %exitcond.not, label %._crit_edge.us, label %10, !llvm.loop !9

._crit_edge.us:                                   ; preds = %20
  %indvars.iv.next26 = add nuw nsw i64 %indvars.iv25, 1
  %exitcond29.not = icmp eq i64 %indvars.iv.next26, %wide.trip.count28
  br i1 %exitcond29.not, label %._crit_edge23, label %.preheader.us, !llvm.loop !11

.split.us:                                        ; preds = %16, %14, %10
  %21 = landingpad { ptr, i32 }
          cleanup
  br label %26

._crit_edge23:                                    ; preds = %._crit_edge.us, %.preheader20
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  ret void

22:                                               ; preds = %7, %3
  %23 = landingpad { ptr, i32 }
          cleanup
  br label %27

24:                                               ; preds = %8
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %26

26:                                               ; preds = %.split.us, %24
  %.pn = phi { ptr, i32 } [ %21, %.split.us ], [ %25, %24 ]
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %5) #4
  br label %27

27:                                               ; preds = %26, %22
  %.pn.pn = phi { ptr, i32 } [ %.pn, %26 ], [ %23, %22 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @_ZN5Eigen12SparseMatrixIdLi0EiED2Ev(ptr noundef nonnull align 8 dereferenceable(72) %0) #4
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN5Eigen12SparseMatrixIdLi0EiEC2Ell(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef, i64 noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EEC2Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt26linear_congruential_engineImLm16807ELm0ELm2147483647EE4seedEm(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt25uniform_real_distributionIdEC2Edd(ptr noundef nonnull align 8 dereferenceable(16), double noundef, double noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef double @_ZNSt25uniform_real_distributionIdEclISt26linear_congruential_engineImLm16807ELm0ELm2147483647EEEEdRT_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN5Eigen12SparseMatrixIdLi0EiE6insertEll(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef, i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5Eigen12SparseMatrixIdLi0EiED2Ev(ptr noundef nonnull align 8 dereferenceable(72)) unnamed_addr #3 align 2

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 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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