; LLVM IR from holzschu/ios_system :: curl/curl/docs/examples (cookie_interface)

; 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"

@.str = external hidden unnamed_addr constant [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [1 x i8], align 1
@stderr = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [38 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [95 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [37 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [34 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [107 x i8], align 1
@.str.15 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca [512 x i8], align 16
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  %6 = call i32 @curl_global_init(i64 noundef 3)
  %7 = call ptr @curl_easy_init()
  store ptr %7, ptr %2, align 8, !tbaa !5
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %77

10:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 512, ptr %4) #5
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef %11, i32 noundef 10002, ptr noundef @.str)
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef %13, i32 noundef 41, i64 noundef 1)
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef %15, i32 noundef 10031, ptr noundef @.str.1)
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = call i32 @curl_easy_perform(ptr noundef %17)
  store i32 %18, ptr %3, align 4, !tbaa !9
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = icmp ne i32 %19, 0
  br i1 %20, label %21, label %26

21:                                               ; preds = %10
  %22 = load ptr, ptr @stderr, align 8, !tbaa !5
  %23 = load i32, ptr %3, align 4, !tbaa !9
  %24 = call ptr @curl_easy_strerror(i32 noundef %23)
  %25 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %22, ptr noundef @.str.2, ptr noundef %24) #5
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %74

26:                                               ; preds = %10
  %27 = load ptr, ptr %2, align 8, !tbaa !5
  call void @print_cookies(ptr noundef %27)
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %29 = load ptr, ptr %2, align 8, !tbaa !5
  %30 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef %29, i32 noundef 10135, ptr noundef @.str.4)
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  call void @print_cookies(ptr noundef %31)
  %32 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %33 = getelementptr inbounds [512 x i8], ptr %4, i64 0, i64 0
  %34 = call i64 @time(ptr noundef null) #5
  %35 = add nsw i64 %34, 31337
  %36 = call double @difftime(i64 noundef %35, i64 noundef 0) #6
  %37 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef %33, i64 noundef 512, ptr noundef @.str.6, ptr noundef @.str.7, ptr noundef @.str.8, ptr noundef @.str.9, ptr noundef @.str.10, double noundef %36, ptr noundef @.str.11, ptr noundef @.str.12) #5
  %38 = load ptr, ptr %2, align 8, !tbaa !5
  %39 = getelementptr inbounds [512 x i8], ptr %4, i64 0, i64 0
  %40 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef %38, i32 noundef 10135, ptr noundef %39)
  store i32 %40, ptr %3, align 4, !tbaa !9
  %41 = load i32, ptr %3, align 4, !tbaa !9
  %42 = icmp ne i32 %41, 0
  br i1 %42, label %43, label %48

43:                                               ; preds = %26
  %44 = load ptr, ptr @stderr, align 8, !tbaa !5
  %45 = load i32, ptr %3, align 4, !tbaa !9
  %46 = call ptr @curl_easy_strerror(i32 noundef %45)
  %47 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %44, ptr noundef @.str.13, ptr noundef %46) #5
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %74

48:                                               ; preds = %26
  %49 = getelementptr inbounds [512 x i8], ptr %4, i64 0, i64 0
  %50 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef %49, i64 noundef 512, ptr noundef @.str.14) #5
  %51 = load ptr, ptr %2, align 8, !tbaa !5
  %52 = getelementptr inbounds [512 x i8], ptr %4, i64 0, i64 0
  %53 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef %51, i32 noundef 10135, ptr noundef %52)
  store i32 %53, ptr %3, align 4, !tbaa !9
  %54 = load i32, ptr %3, align 4, !tbaa !9
  %55 = icmp ne i32 %54, 0
  br i1 %55, label %56, label %61

56:                                               ; preds = %48
  %57 = load ptr, ptr @stderr, align 8, !tbaa !5
  %58 = load i32, ptr %3, align 4, !tbaa !9
  %59 = call ptr @curl_easy_strerror(i32 noundef %58)
  %60 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %57, ptr noundef @.str.13, ptr noundef %59) #5
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %74

61:                                               ; preds = %48
  %62 = load ptr, ptr %2, align 8, !tbaa !5
  call void @print_cookies(ptr noundef %62)
  %63 = load ptr, ptr %2, align 8, !tbaa !5
  %64 = call i32 @curl_easy_perform(ptr noundef %63)
  store i32 %64, ptr %3, align 4, !tbaa !9
  %65 = load i32, ptr %3, align 4, !tbaa !9
  %66 = icmp ne i32 %65, 0
  br i1 %66, label %67, label %72

67:                                               ; preds = %61
  %68 = load ptr, ptr @stderr, align 8, !tbaa !5
  %69 = load i32, ptr %3, align 4, !tbaa !9
  %70 = call ptr @curl_easy_strerror(i32 noundef %69)
  %71 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %68, ptr noundef @.str.2, ptr noundef %70) #5
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %74

72:                                               ; preds = %61
  %73 = load ptr, ptr %2, align 8, !tbaa !5
  call void @curl_easy_cleanup(ptr noundef %73)
  store i32 0, ptr %5, align 4
  br label %74

74:                                               ; preds = %72, %67, %56, %43, %21
  call void @llvm.lifetime.end.p0(i64 512, ptr %4) #5
  %75 = load i32, ptr %5, align 4
  switch i32 %75, label %81 [
    i32 0, label %76
  ]

76:                                               ; preds = %74
  br label %80

77:                                               ; preds = %0
  %78 = load ptr, ptr @stderr, align 8, !tbaa !5
  %79 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %78, ptr noundef @.str.15) #5
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %81

80:                                               ; preds = %76
  call void @curl_global_cleanup()
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %81

81:                                               ; preds = %80, %77, %74
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  %82 = load i32, ptr %1, align 4
  ret i32 %82
}

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

declare i32 @curl_global_init(i64 noundef) #2

declare ptr @curl_easy_init() #2

declare i32 @curl_easy_setopt(ptr noundef, i32 noundef, ...) #2

declare i32 @curl_easy_perform(ptr noundef) #2

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

declare ptr @curl_easy_strerror(i32 noundef) #2

; Function Attrs: nounwind uwtable
declare hidden void @print_cookies(ptr noundef) #0

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: nounwind
declare i32 @snprintf(ptr noundef, i64 noundef, ptr noundef, ...) #3

; Function Attrs: nounwind willreturn memory(none)
declare double @difftime(i64 noundef, i64 noundef) #4

; Function Attrs: nounwind
declare i64 @time(ptr noundef) #3

declare void @curl_easy_cleanup(ptr noundef) #2

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

declare void @curl_global_cleanup() #2

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 "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(none) "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 = { nounwind }
attributes #6 = { nounwind willreturn memory(none) }

!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, !10, i64 0}
!10 = !{!"int", !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"

@.str = external hidden unnamed_addr constant [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [1 x i8], align 1
@stderr = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [38 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [95 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [37 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [34 x i8], align 1
@.str.14 = external hidden unnamed_addr constant [107 x i8], align 1
@.str.15 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @main() local_unnamed_addr #0 {
  %1 = alloca [512 x i8], align 16
  %2 = tail call i32 @curl_global_init(i64 noundef 3) #6
  %3 = tail call ptr @curl_easy_init() #6
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %39, label %4

4:                                                ; preds = %0
  call void @llvm.lifetime.start.p0(i64 512, ptr nonnull %1) #6
  %5 = tail call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef nonnull %3, i32 noundef 10002, ptr noundef nonnull @.str) #6
  %6 = tail call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef nonnull %3, i32 noundef 41, i64 noundef 1) #6
  %7 = tail call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef nonnull %3, i32 noundef 10031, ptr noundef nonnull @.str.1) #6
  %8 = tail call i32 @curl_easy_perform(ptr noundef nonnull %3) #6
  %.not28 = icmp eq i32 %8, 0
  br i1 %.not28, label %13, label %9

9:                                                ; preds = %4
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call ptr @curl_easy_strerror(i32 noundef %8) #6
  %12 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.2, ptr noundef %11) #7
  br label %.thread

13:                                               ; preds = %4
  tail call void @print_cookies(ptr noundef nonnull %3)
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %15 = tail call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef nonnull %3, i32 noundef 10135, ptr noundef nonnull @.str.4) #6
  tail call void @print_cookies(ptr noundef nonnull %3)
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %17 = tail call i64 @time(ptr noundef null) #6
  %18 = add nsw i64 %17, 31337
  %19 = tail call double @difftime(i64 noundef %18, i64 noundef 0) #8
  %20 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef nonnull dereferenceable(1) %1, i64 noundef 512, ptr noundef nonnull @.str.6, ptr noundef nonnull @.str.7, ptr noundef nonnull @.str.8, ptr noundef nonnull @.str.9, ptr noundef nonnull @.str.10, double noundef %19, ptr noundef nonnull @.str.11, ptr noundef nonnull @.str.12) #6
  %21 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef nonnull %3, i32 noundef 10135, ptr noundef nonnull %1) #6
  %.not29 = icmp eq i32 %21, 0
  br i1 %.not29, label %26, label %22

22:                                               ; preds = %13
  %23 = load ptr, ptr @stderr, align 8, !tbaa !5
  %24 = call ptr @curl_easy_strerror(i32 noundef %21) #6
  %25 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %23, ptr noundef nonnull @.str.13, ptr noundef %24) #7
  br label %.thread

26:                                               ; preds = %13
  %27 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef nonnull dereferenceable(1) %1, i64 noundef 512, ptr noundef nonnull @.str.14) #6
  %28 = call i32 (ptr, i32, ...) @curl_easy_setopt(ptr noundef nonnull %3, i32 noundef 10135, ptr noundef nonnull %1) #6
  %.not30 = icmp eq i32 %28, 0
  br i1 %.not30, label %33, label %29

29:                                               ; preds = %26
  %30 = load ptr, ptr @stderr, align 8, !tbaa !5
  %31 = call ptr @curl_easy_strerror(i32 noundef %28) #6
  %32 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %30, ptr noundef nonnull @.str.13, ptr noundef %31) #7
  br label %.thread

33:                                               ; preds = %26
  call void @print_cookies(ptr noundef nonnull %3)
  %34 = call i32 @curl_easy_perform(ptr noundef nonnull %3) #6
  %.not31 = icmp eq i32 %34, 0
  br i1 %.not31, label %42, label %35

35:                                               ; preds = %33
  %36 = load ptr, ptr @stderr, align 8, !tbaa !5
  %37 = call ptr @curl_easy_strerror(i32 noundef %34) #6
  %38 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %36, ptr noundef nonnull @.str.2, ptr noundef %37) #7
  br label %.thread

.thread:                                          ; preds = %9, %22, %29, %35
  call void @llvm.lifetime.end.p0(i64 512, ptr nonnull %1) #6
  br label %43

39:                                               ; preds = %0
  %40 = load ptr, ptr @stderr, align 8, !tbaa !5
  %41 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %40, ptr noundef nonnull @.str.15) #7
  br label %43

42:                                               ; preds = %33
  call void @curl_easy_cleanup(ptr noundef nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 512, ptr nonnull %1) #6
  call void @curl_global_cleanup() #6
  br label %43

43:                                               ; preds = %.thread, %42, %39
  %.1 = phi i32 [ 0, %42 ], [ 1, %39 ], [ 1, %.thread ]
  ret i32 %.1
}

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

declare i32 @curl_global_init(i64 noundef) local_unnamed_addr #2

declare ptr @curl_easy_init() local_unnamed_addr #2

declare i32 @curl_easy_setopt(ptr noundef, i32 noundef, ...) local_unnamed_addr #2

declare i32 @curl_easy_perform(ptr noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #3

declare ptr @curl_easy_strerror(i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare hidden void @print_cookies(ptr noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @snprintf(ptr noalias nocapture noundef writeonly, i64 noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare double @difftime(i64 noundef, i64 noundef) local_unnamed_addr #4

; Function Attrs: nounwind
declare i64 @time(ptr noundef) local_unnamed_addr #5

declare void @curl_easy_cleanup(ptr noundef) local_unnamed_addr #2

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

declare void @curl_global_cleanup() local_unnamed_addr #2

attributes #0 = { 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 = { "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 = { 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 #4 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 = { 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 #6 = { nounwind }
attributes #7 = { cold nounwind }
attributes #8 = { nounwind willreturn memory(none) }

!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"}


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