; LLVM IR from fdabrandao/vpsolver :: src/instance.ll (ZNK4ItemltERKS_)

; 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.Item = type { %"class.std::vector", %"class.std::vector", i32, i32, i32, i32, i32, i32 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = 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 }

@.str = external hidden unnamed_addr constant [54 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [70 x i8], align 1
@_ZTISt13runtime_error = external constant ptr

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZNK4ItemltERKS_(ptr noundef nonnull align 8 dereferenceable(72) %0, ptr noundef nonnull align 8 dereferenceable(72) %1) #0 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca [256 x i8], align 16
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8
  %12 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 5
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %class.Item, ptr %14, i32 0, i32 5
  %16 = load i32, ptr %15, align 4, !tbaa !9
  %17 = icmp eq i32 %13, %16
  br i1 %17, label %28, label %18

18:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 256, ptr %6) #6
  %19 = getelementptr inbounds [256 x i8], ptr %6, i64 0, i64 0
  %20 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef %19, i64 noundef 256, ptr noundef @.str, ptr noundef @.str.1, ptr noundef @.str.2, i32 noundef 17) #6
  %21 = call ptr @__cxa_allocate_exception(i64 16) #6
  %22 = getelementptr inbounds [256 x i8], ptr %6, i64 0, i64 0
  invoke void @_ZNSt13runtime_errorC1EPKc(ptr noundef nonnull align 8 dereferenceable(16) %21, ptr noundef %22)
          to label %23 unwind label %24

23:                                               ; preds = %18
  call void @__cxa_throw(ptr %21, ptr @_ZTISt13runtime_error, ptr @_ZNSt13runtime_errorD1Ev) #7
  unreachable

24:                                               ; preds = %18
  %25 = landingpad { ptr, i32 }
          cleanup
  %26 = extractvalue { ptr, i32 } %25, 0
  store ptr %26, ptr %7, align 8
  %27 = extractvalue { ptr, i32 } %25, 1
  store i32 %27, ptr %8, align 4
  call void @__cxa_free_exception(ptr %21) #6
  call void @llvm.lifetime.end.p0(i64 256, ptr %6) #6
  br label %93

28:                                               ; preds = %2
  %29 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 7
  %30 = load i32, ptr %29, align 4, !tbaa !16
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = getelementptr inbounds %class.Item, ptr %31, i32 0, i32 7
  %33 = load i32, ptr %32, align 4, !tbaa !16
  %34 = sub nsw i32 %30, %33
  %35 = call i32 @llvm.abs.i32(i32 %34, i1 true)
  %36 = sitofp i32 %35 to double
  %37 = fcmp oge double %36, 1.000000e-05
  br i1 %37, label %38, label %45

38:                                               ; preds = %28
  %39 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 7
  %40 = load i32, ptr %39, align 4, !tbaa !16
  %41 = load ptr, ptr %5, align 8, !tbaa !5
  %42 = getelementptr inbounds %class.Item, ptr %41, i32 0, i32 7
  %43 = load i32, ptr %42, align 4, !tbaa !16
  %44 = icmp slt i32 %40, %43
  store i1 %44, ptr %3, align 1
  br label %91

45:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !17
  br label %46

46:                                               ; preds = %79, %45
  %47 = load i32, ptr %9, align 4, !tbaa !17
  %48 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 5
  %49 = load i32, ptr %48, align 4, !tbaa !9
  %50 = icmp slt i32 %47, %49
  br i1 %50, label %52, label %51

51:                                               ; preds = %46
  store i32 2, ptr %10, align 4
  br label %82

52:                                               ; preds = %46
  %53 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 0
  %54 = load i32, ptr %9, align 4, !tbaa !17
  %55 = sext i32 %54 to i64
  %56 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %53, i64 noundef %55) #6
  %57 = load i32, ptr %56, align 4, !tbaa !17
  %58 = load ptr, ptr %5, align 8, !tbaa !5
  %59 = getelementptr inbounds %class.Item, ptr %58, i32 0, i32 0
  %60 = load i32, ptr %9, align 4, !tbaa !17
  %61 = sext i32 %60 to i64
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %59, i64 noundef %61) #6
  %63 = load i32, ptr %62, align 4, !tbaa !17
  %64 = icmp ne i32 %57, %63
  br i1 %64, label %65, label %78

65:                                               ; preds = %52
  %66 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 0
  %67 = load i32, ptr %9, align 4, !tbaa !17
  %68 = sext i32 %67 to i64
  %69 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %66, i64 noundef %68) #6
  %70 = load i32, ptr %69, align 4, !tbaa !17
  %71 = load ptr, ptr %5, align 8, !tbaa !5
  %72 = getelementptr inbounds %class.Item, ptr %71, i32 0, i32 0
  %73 = load i32, ptr %9, align 4, !tbaa !17
  %74 = sext i32 %73 to i64
  %75 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %72, i64 noundef %74) #6
  %76 = load i32, ptr %75, align 4, !tbaa !17
  %77 = icmp slt i32 %70, %76
  store i1 %77, ptr %3, align 1
  store i32 1, ptr %10, align 4
  br label %82

78:                                               ; preds = %52
  br label %79

79:                                               ; preds = %78
  %80 = load i32, ptr %9, align 4, !tbaa !17
  %81 = add nsw i32 %80, 1
  store i32 %81, ptr %9, align 4, !tbaa !17
  br label %46, !llvm.loop !18

82:                                               ; preds = %65, %51
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  %83 = load i32, ptr %10, align 4
  switch i32 %83, label %98 [
    i32 2, label %84
    i32 1, label %91
  ]

84:                                               ; preds = %82
  %85 = getelementptr inbounds %class.Item, ptr %11, i32 0, i32 6
  %86 = load i32, ptr %85, align 8, !tbaa !20
  %87 = load ptr, ptr %5, align 8, !tbaa !5
  %88 = getelementptr inbounds %class.Item, ptr %87, i32 0, i32 6
  %89 = load i32, ptr %88, align 8, !tbaa !20
  %90 = icmp slt i32 %86, %89
  store i1 %90, ptr %3, align 1
  br label %91

91:                                               ; preds = %84, %82, %38
  %92 = load i1, ptr %3, align 1
  ret i1 %92

93:                                               ; preds = %24
  %94 = load ptr, ptr %7, align 8
  %95 = load i32, ptr %8, align 4
  %96 = insertvalue { ptr, i32 } poison, ptr %94, 0
  %97 = insertvalue { ptr, i32 } %96, i32 %95, 1
  resume { ptr, i32 } %97

98:                                               ; preds = %82
  unreachable
}

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

; Function Attrs: nounwind
declare i32 @snprintf(ptr noundef, i64 noundef, ptr noundef, ...) #2

declare ptr @__cxa_allocate_exception(i64)

declare void @_ZNSt13runtime_errorC1EPKc(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #3

declare i32 @__gxx_personality_v0(...)

declare void @__cxa_free_exception(ptr)

; Function Attrs: nounwind
declare void @_ZNSt13runtime_errorD1Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #2

declare void @__cxa_throw(ptr, ptr, ptr)

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #5 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "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 = { "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 = { 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 #6 = { nounwind }
attributes #7 = { noreturn }

!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, !15, i64 60}
!10 = !{!"_ZTS4Item", !11, i64 0, !11, i64 24, !15, i64 48, !15, i64 52, !15, i64 56, !15, i64 60, !15, i64 64, !15, i64 68}
!11 = !{!"_ZTSSt6vectorIiSaIiEE", !12, i64 0}
!12 = !{!"_ZTSSt12_Vector_baseIiSaIiEE", !13, i64 0}
!13 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE12_Vector_implE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!15 = !{!"int", !7, i64 0}
!16 = !{!10, !15, i64 68}
!17 = !{!15, !15, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = !{!10, !15, i64 64}


; 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"

@.str = external hidden unnamed_addr constant [54 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [70 x i8], align 1
@_ZTISt13runtime_error = external constant ptr

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZNK4ItemltERKS_(ptr noundef nonnull align 8 dereferenceable(72) %0, ptr noundef nonnull align 8 dereferenceable(72) %1) local_unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca [256 x i8], align 16
  %4 = getelementptr inbounds i8, ptr %0, i64 60
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %1, i64 60
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp eq i32 %5, %7
  br i1 %8, label %15, label %9

9:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 256, ptr nonnull %3) #6
  %10 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef nonnull dereferenceable(1) %3, i64 noundef 256, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, ptr noundef nonnull @.str.2, i32 noundef 17) #6
  %11 = tail call ptr @__cxa_allocate_exception(i64 16) #6
  invoke void @_ZNSt13runtime_errorC1EPKc(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef nonnull %3)
          to label %12 unwind label %13

12:                                               ; preds = %9
  call void @__cxa_throw(ptr nonnull %11, ptr nonnull @_ZTISt13runtime_error, ptr nonnull @_ZNSt13runtime_errorD1Ev) #7
  unreachable

13:                                               ; preds = %9
  %14 = landingpad { ptr, i32 }
          cleanup
  call void @__cxa_free_exception(ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 256, ptr nonnull %3) #6
  resume { ptr, i32 } %14

15:                                               ; preds = %2
  %16 = getelementptr inbounds i8, ptr %0, i64 68
  %17 = load i32, ptr %16, align 4, !tbaa !15
  %18 = getelementptr inbounds i8, ptr %1, i64 68
  %19 = load i32, ptr %18, align 4, !tbaa !15
  %.not = icmp eq i32 %17, %19
  br i1 %.not, label %.preheader, label %21

.preheader:                                       ; preds = %15
  %20 = icmp sgt i32 %5, 0
  br i1 %20, label %.lr.ph, label %._crit_edge

21:                                               ; preds = %15
  %22 = icmp slt i32 %17, %19
  br label %42

23:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = icmp slt i64 %indvars.iv.next, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !16

.lr.ph:                                           ; preds = %.preheader, %23
  %indvars.iv = phi i64 [ %indvars.iv.next, %23 ], [ 0, %.preheader ]
  %27 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #6
  %28 = load i32, ptr %27, align 4, !tbaa !18
  %29 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #6
  %30 = load i32, ptr %29, align 4, !tbaa !18
  %.not18 = icmp eq i32 %28, %30
  br i1 %.not18, label %23, label %31

31:                                               ; preds = %.lr.ph
  %32 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #6
  %33 = load i32, ptr %32, align 4, !tbaa !18
  %34 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #6
  %35 = load i32, ptr %34, align 4, !tbaa !18
  %36 = icmp slt i32 %33, %35
  br label %42

._crit_edge:                                      ; preds = %23, %.preheader
  %37 = getelementptr inbounds i8, ptr %0, i64 64
  %38 = load i32, ptr %37, align 8, !tbaa !19
  %39 = getelementptr inbounds i8, ptr %1, i64 64
  %40 = load i32, ptr %39, align 8, !tbaa !19
  %41 = icmp slt i32 %38, %40
  br label %42

42:                                               ; preds = %31, %._crit_edge, %21
  %.1 = phi i1 [ %22, %21 ], [ %36, %31 ], [ %41, %._crit_edge ]
  ret i1 %.1
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @snprintf(ptr noalias nocapture noundef writeonly, i64 noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

declare ptr @__cxa_allocate_exception(i64) local_unnamed_addr

declare void @_ZNSt13runtime_errorC1EPKc(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #3

declare i32 @__gxx_personality_v0(...)

declare void @__cxa_free_exception(ptr) local_unnamed_addr

; Function Attrs: nounwind
declare void @_ZNSt13runtime_errorD1Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #4

declare void @__cxa_throw(ptr, ptr, ptr) local_unnamed_addr

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #5 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 = { "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 "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 #5 = { 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 #6 = { nounwind }
attributes #7 = { noreturn }

!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, !14, i64 60}
!6 = !{!"_ZTS4Item", !7, i64 0, !7, i64 24, !14, i64 48, !14, i64 52, !14, i64 56, !14, i64 60, !14, i64 64, !14, i64 68}
!7 = !{!"_ZTSSt6vectorIiSaIiEE", !8, i64 0}
!8 = !{!"_ZTSSt12_Vector_baseIiSaIiEE", !9, i64 0}
!9 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE12_Vector_implE", !10, i64 0}
!10 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE17_Vector_impl_dataE", !11, i64 0, !11, i64 8, !11, i64 16}
!11 = !{!"any pointer", !12, i64 0}
!12 = !{!"omnipotent char", !13, i64 0}
!13 = !{!"Simple C++ TBAA"}
!14 = !{!"int", !12, i64 0}
!15 = !{!6, !14, i64 68}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = !{!14, !14, i64 0}
!19 = !{!6, !14, i64 64}


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