; LLVM IR from aws/s2n-tls :: crypto (s2n_tls13_keys)

; 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.s2n_blob = type { ptr, i32, i32, i8 }
%struct.s2n_debug_info = type { ptr, ptr }
%struct.s2n_tls13_keys = type { i32, i32, i8, %struct.s2n_blob, %struct.s2n_blob, [48 x i8], [48 x i8], %struct.s2n_hmac_state }
%struct.s2n_hmac_state = type { i32, i16, i32, i16, i8, %struct.s2n_hash_state, %struct.s2n_hash_state, %struct.s2n_hash_state, %struct.s2n_hash_state, [128 x i8], [64 x i8] }
%struct.s2n_hash_state = type { ptr, i32, i8, i64, %union.anon }
%union.anon = type { %struct.s2n_hash_evp_digest }
%struct.s2n_hash_evp_digest = type { %struct.s2n_evp_digest, %struct.s2n_evp_digest }
%struct.s2n_evp_digest = type { ptr, ptr }

@s2n_tls13_label_application_traffic_secret_update = external dso_local constant %struct.s2n_blob, align 8
@_s2n_debug_info = external thread_local global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local global i32, align 4
@zero_length_blob = external hidden constant %struct.s2n_blob, align 8
@.str.7 = external hidden unnamed_addr constant [94 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [94 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [94 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0

; Function Attrs: nounwind willreturn memory(read)
declare ptr @strrchr(ptr noundef, i32 noundef) #1

declare i32 @s2n_calculate_stacktrace() #2

declare i32 @s2n_hkdf_expand_label(ptr noundef, i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @s2n_tls13_update_application_traffic_secret(ptr noundef %0, ptr noundef %1, ptr noundef %2) #3 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %3
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %42, label %11

11:                                               ; preds = %8
  br label %12

12:                                               ; preds = %11
  br label %13

13:                                               ; preds = %12
  %14 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %15 = getelementptr inbounds %struct.s2n_debug_info, ptr %14, i32 0, i32 0
  store ptr @.str.7, ptr %15, align 8, !tbaa !9
  %16 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %17 = getelementptr inbounds %struct.s2n_debug_info, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = getelementptr inbounds i8, ptr %18, i64 21
  %20 = call ptr @strrchr(ptr noundef %19, i32 noundef 47) #4
  %21 = icmp ne ptr %20, null
  br i1 %21, label %22, label %29

22:                                               ; preds = %13
  %23 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %24 = getelementptr inbounds %struct.s2n_debug_info, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = getelementptr inbounds i8, ptr %25, i64 21
  %27 = call ptr @strrchr(ptr noundef %26, i32 noundef 47) #4
  %28 = getelementptr inbounds i8, ptr %27, i64 1
  br label %34

29:                                               ; preds = %13
  %30 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %31 = getelementptr inbounds %struct.s2n_debug_info, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !9
  %33 = getelementptr inbounds i8, ptr %32, i64 21
  br label %34

34:                                               ; preds = %29, %22
  %35 = phi ptr [ %28, %22 ], [ %33, %29 ]
  %36 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %37 = getelementptr inbounds %struct.s2n_debug_info, ptr %36, i32 0, i32 1
  store ptr %35, ptr %37, align 8, !tbaa !11
  %38 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %38, align 4, !tbaa !12
  %39 = call i32 @s2n_calculate_stacktrace()
  br label %40

40:                                               ; preds = %34
  store i32 -1, ptr %4, align 4
  br label %129

41:                                               ; No predecessors!
  br label %42

42:                                               ; preds = %41, %8
  br label %43

43:                                               ; preds = %42
  br label %44

44:                                               ; preds = %43
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  %46 = icmp ne ptr %45, null
  br i1 %46, label %78, label %47

47:                                               ; preds = %44
  br label %48

48:                                               ; preds = %47
  br label %49

49:                                               ; preds = %48
  %50 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %51 = getelementptr inbounds %struct.s2n_debug_info, ptr %50, i32 0, i32 0
  store ptr @.str.8, ptr %51, align 8, !tbaa !9
  %52 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %53 = getelementptr inbounds %struct.s2n_debug_info, ptr %52, i32 0, i32 0
  %54 = load ptr, ptr %53, align 8, !tbaa !9
  %55 = getelementptr inbounds i8, ptr %54, i64 21
  %56 = call ptr @strrchr(ptr noundef %55, i32 noundef 47) #4
  %57 = icmp ne ptr %56, null
  br i1 %57, label %58, label %65

58:                                               ; preds = %49
  %59 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %60 = getelementptr inbounds %struct.s2n_debug_info, ptr %59, i32 0, i32 0
  %61 = load ptr, ptr %60, align 8, !tbaa !9
  %62 = getelementptr inbounds i8, ptr %61, i64 21
  %63 = call ptr @strrchr(ptr noundef %62, i32 noundef 47) #4
  %64 = getelementptr inbounds i8, ptr %63, i64 1
  br label %70

65:                                               ; preds = %49
  %66 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %67 = getelementptr inbounds %struct.s2n_debug_info, ptr %66, i32 0, i32 0
  %68 = load ptr, ptr %67, align 8, !tbaa !9
  %69 = getelementptr inbounds i8, ptr %68, i64 21
  br label %70

70:                                               ; preds = %65, %58
  %71 = phi ptr [ %64, %58 ], [ %69, %65 ]
  %72 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %73 = getelementptr inbounds %struct.s2n_debug_info, ptr %72, i32 0, i32 1
  store ptr %71, ptr %73, align 8, !tbaa !11
  %74 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %74, align 4, !tbaa !12
  %75 = call i32 @s2n_calculate_stacktrace()
  br label %76

76:                                               ; preds = %70
  store i32 -1, ptr %4, align 4
  br label %129

77:                                               ; No predecessors!
  br label %78

78:                                               ; preds = %77, %44
  br label %79

79:                                               ; preds = %78
  br label %80

80:                                               ; preds = %79
  %81 = load ptr, ptr %7, align 8, !tbaa !5
  %82 = icmp ne ptr %81, null
  br i1 %82, label %114, label %83

83:                                               ; preds = %80
  br label %84

84:                                               ; preds = %83
  br label %85

85:                                               ; preds = %84
  %86 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %87 = getelementptr inbounds %struct.s2n_debug_info, ptr %86, i32 0, i32 0
  store ptr @.str.9, ptr %87, align 8, !tbaa !9
  %88 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %89 = getelementptr inbounds %struct.s2n_debug_info, ptr %88, i32 0, i32 0
  %90 = load ptr, ptr %89, align 8, !tbaa !9
  %91 = getelementptr inbounds i8, ptr %90, i64 21
  %92 = call ptr @strrchr(ptr noundef %91, i32 noundef 47) #4
  %93 = icmp ne ptr %92, null
  br i1 %93, label %94, label %101

94:                                               ; preds = %85
  %95 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %96 = getelementptr inbounds %struct.s2n_debug_info, ptr %95, i32 0, i32 0
  %97 = load ptr, ptr %96, align 8, !tbaa !9
  %98 = getelementptr inbounds i8, ptr %97, i64 21
  %99 = call ptr @strrchr(ptr noundef %98, i32 noundef 47) #4
  %100 = getelementptr inbounds i8, ptr %99, i64 1
  br label %106

101:                                              ; preds = %85
  %102 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %103 = getelementptr inbounds %struct.s2n_debug_info, ptr %102, i32 0, i32 0
  %104 = load ptr, ptr %103, align 8, !tbaa !9
  %105 = getelementptr inbounds i8, ptr %104, i64 21
  br label %106

106:                                              ; preds = %101, %94
  %107 = phi ptr [ %100, %94 ], [ %105, %101 ]
  %108 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %109 = getelementptr inbounds %struct.s2n_debug_info, ptr %108, i32 0, i32 1
  store ptr %107, ptr %109, align 8, !tbaa !11
  %110 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %110, align 4, !tbaa !12
  %111 = call i32 @s2n_calculate_stacktrace()
  br label %112

112:                                              ; preds = %106
  store i32 -1, ptr %4, align 4
  br label %129

113:                                              ; No predecessors!
  br label %114

114:                                              ; preds = %113, %80
  br label %115

115:                                              ; preds = %114
  br label %116

116:                                              ; preds = %115
  %117 = load ptr, ptr %5, align 8, !tbaa !5
  %118 = getelementptr inbounds %struct.s2n_tls13_keys, ptr %117, i32 0, i32 7
  %119 = load ptr, ptr %5, align 8, !tbaa !5
  %120 = getelementptr inbounds %struct.s2n_tls13_keys, ptr %119, i32 0, i32 0
  %121 = load i32, ptr %120, align 8, !tbaa !14
  %122 = load ptr, ptr %6, align 8, !tbaa !5
  %123 = load ptr, ptr %7, align 8, !tbaa !5
  %124 = call i32 @s2n_hkdf_expand_label(ptr noundef %118, i32 noundef %121, ptr noundef %122, ptr noundef @s2n_tls13_label_application_traffic_secret_update, ptr noundef @zero_length_blob, ptr noundef %123)
  %125 = icmp sgt i32 %124, -1
  br i1 %125, label %127, label %126

126:                                              ; preds = %116
  store i32 -1, ptr %4, align 4
  br label %129

127:                                              ; preds = %116
  br label %128

128:                                              ; preds = %127
  store i32 0, ptr %4, align 4
  br label %129

129:                                              ; preds = %128, %126, %112, %76, %40
  %130 = load i32, ptr %4, align 4
  ret i32 %130
}

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { nounwind willreturn memory(read) "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 = { "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 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 willreturn memory(read) }

!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/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"s2n_debug_info", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!15, !13, i64 0}
!15 = !{!"s2n_tls13_keys", !13, i64 0, !13, i64 4, !7, i64 8, !16, i64 16, !16, i64 40, !7, i64 64, !7, i64 112, !17, i64 160}
!16 = !{!"s2n_blob", !6, i64 0, !13, i64 8, !13, i64 12, !13, i64 16}
!17 = !{!"s2n_hmac_state", !13, i64 0, !18, i64 4, !13, i64 8, !18, i64 12, !7, i64 14, !19, i64 16, !19, i64 72, !19, i64 128, !19, i64 184, !7, i64 240, !7, i64 368}
!18 = !{!"short", !7, i64 0}
!19 = !{!"s2n_hash_state", !6, i64 0, !13, i64 8, !7, i64 12, !20, i64 16, !7, i64 24}
!20 = !{!"long", !7, i64 0}


; 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"

%struct.s2n_blob = type { ptr, i32, i32, i8 }
%struct.s2n_debug_info = type { ptr, ptr }

@s2n_tls13_label_application_traffic_secret_update = external dso_local constant %struct.s2n_blob, align 8
@_s2n_debug_info = external thread_local local_unnamed_addr global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local local_unnamed_addr global i32, align 4
@zero_length_blob = external hidden constant %struct.s2n_blob, align 8
@.str.7 = external hidden unnamed_addr constant [94 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [94 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [94 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare ptr @strrchr(ptr noundef, i32 noundef) local_unnamed_addr #1

declare i32 @s2n_calculate_stacktrace() local_unnamed_addr #2

declare i32 @s2n_hkdf_expand_label(ptr noundef, i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @s2n_tls13_update_application_traffic_secret(ptr noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #3 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %4, label %12

4:                                                ; preds = %3
  %5 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.7, ptr %5, align 8, !tbaa !5
  %6 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.7, i64 21), i32 noundef 47) #4
  %.not13 = icmp eq ptr %6, null
  %7 = getelementptr inbounds i8, ptr %6, i64 1
  %8 = select i1 %.not13, ptr getelementptr inbounds (i8, ptr @.str.7, i64 21), ptr %7
  %9 = getelementptr inbounds i8, ptr %5, i64 8
  store ptr %8, ptr %9, align 8, !tbaa !10
  %10 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %10, align 4, !tbaa !11
  %11 = tail call i32 @s2n_calculate_stacktrace() #5
  br label %34

12:                                               ; preds = %3
  %.not14 = icmp eq ptr %1, null
  br i1 %.not14, label %13, label %21

13:                                               ; preds = %12
  %14 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.8, ptr %14, align 8, !tbaa !5
  %15 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.8, i64 21), i32 noundef 47) #4
  %.not15 = icmp eq ptr %15, null
  %16 = getelementptr inbounds i8, ptr %15, i64 1
  %17 = select i1 %.not15, ptr getelementptr inbounds (i8, ptr @.str.8, i64 21), ptr %16
  %18 = getelementptr inbounds i8, ptr %14, i64 8
  store ptr %17, ptr %18, align 8, !tbaa !10
  %19 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %19, align 4, !tbaa !11
  %20 = tail call i32 @s2n_calculate_stacktrace() #5
  br label %34

21:                                               ; preds = %12
  %.not16 = icmp eq ptr %2, null
  br i1 %.not16, label %22, label %30

22:                                               ; preds = %21
  %23 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.9, ptr %23, align 8, !tbaa !5
  %24 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.9, i64 21), i32 noundef 47) #4
  %.not17 = icmp eq ptr %24, null
  %25 = getelementptr inbounds i8, ptr %24, i64 1
  %26 = select i1 %.not17, ptr getelementptr inbounds (i8, ptr @.str.9, i64 21), ptr %25
  %27 = getelementptr inbounds i8, ptr %23, i64 8
  store ptr %26, ptr %27, align 8, !tbaa !10
  %28 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %28, align 4, !tbaa !11
  %29 = tail call i32 @s2n_calculate_stacktrace() #5
  br label %34

30:                                               ; preds = %21
  %31 = getelementptr inbounds i8, ptr %0, i64 160
  %32 = load i32, ptr %0, align 8, !tbaa !13
  %33 = tail call i32 @s2n_hkdf_expand_label(ptr noundef nonnull %31, i32 noundef %32, ptr noundef nonnull %1, ptr noundef nonnull @s2n_tls13_label_application_traffic_secret_update, ptr noundef nonnull @zero_length_blob, ptr noundef nonnull %2) #5
  %.lobit = ashr i32 %33, 31
  br label %34

34:                                               ; preds = %30, %22, %13, %4
  %.0 = phi i32 [ -1, %22 ], [ -1, %13 ], [ -1, %4 ], [ %.lobit, %30 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { "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 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 willreturn memory(read) }
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, !7, i64 0}
!6 = !{!"s2n_debug_info", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!14, !12, i64 0}
!14 = !{!"s2n_tls13_keys", !12, i64 0, !12, i64 4, !8, i64 8, !15, i64 16, !15, i64 40, !8, i64 64, !8, i64 112, !16, i64 160}
!15 = !{!"s2n_blob", !7, i64 0, !12, i64 8, !12, i64 12, !12, i64 16}
!16 = !{!"s2n_hmac_state", !12, i64 0, !17, i64 4, !12, i64 8, !17, i64 12, !8, i64 14, !18, i64 16, !18, i64 72, !18, i64 128, !18, i64 184, !8, i64 240, !8, i64 368}
!17 = !{!"short", !8, i64 0}
!18 = !{!"s2n_hash_state", !7, i64 0, !12, i64 8, !8, i64 12, !19, i64 16, !8, i64 24}
!19 = !{!"long", !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass