; LLVM IR from nickmqb/muon :: bootstrap/mu.ll_CGenerator (genExpressionStatement__)

; 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.string__ = type { ptr, i32 }
%struct.Node__ = type { i32, ptr }
%struct.tag_____StringBuilder__ = type { ptr, i32, i32 }
%struct.tag_____ExpressionStatement__ = type { %struct.Node__ }
%struct.tag_____BinaryOperatorExpression__ = type { ptr, %struct.Node__, %struct.Node__ }
%struct.tag_____Token__ = type { i32, %struct.string__, %struct.tag_____IntRange__, %struct.tag_____IntRange__, i32 }
%struct.tag_____IntRange__ = type { i32, i32 }
%struct.tag_____GenerateContext__ = type { ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, ptr, ptr, ptr, %struct.string__, i32, %struct.string__, i32, ptr, ptr, i8 }

@mu_____string175 = external dso_local global %struct.string__, align 8
@mu_____string324 = external dso_local global %struct.string__, align 8
@top_____abandonFn__ = external dso_local thread_local global ptr, align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: nounwind uwtable
declare dso_local void @StringBuilder__write__(ptr noundef, ptr, i32) #4

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @string__equals__(ptr, i32, ptr, i32) #4

; Function Attrs: nounwind uwtable
declare dso_local void @CodeBuilder__writeLine__(ptr noundef, ptr, i32) #4

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @StringBuilder__toString__(ptr noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genExpression__(ptr noundef, i32, ptr, ptr noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genUnreachable__(ptr noundef) #4

; Function Attrs: nounwind uwtable
define dso_local void @CGenerator__genExpressionStatement__(ptr noundef %0, ptr noundef %1) #4 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %struct.Node__, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %struct.tag_____StringBuilder__, align 8
  %9 = alloca %struct.tag_____StringBuilder__, align 8
  %10 = alloca %struct.string__, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.tag_____ExpressionStatement__, ptr %11, i32 0, i32 0
  %13 = getelementptr inbounds %struct.Node__, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 8, !tbaa !9
  %15 = icmp eq i32 %14, 12
  br i1 %15, label %16, label %62

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 16, ptr %5) #5
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.tag_____ExpressionStatement__, ptr %17, i32 0, i32 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %5, ptr align 8 %18, i64 16, i1 false), !tbaa.struct !13
  %19 = getelementptr inbounds %struct.Node__, ptr %5, i32 0, i32 0
  %20 = load i32, ptr %19, align 8, !tbaa !15
  %21 = icmp eq i32 %20, 12
  br i1 %21, label %25, label %22

22:                                               ; preds = %16
  %23 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @top_____abandonFn__)
  %24 = load ptr, ptr %23, align 8, !tbaa !5
  call void %24(i32 noundef -4)
  br label %25

25:                                               ; preds = %22, %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %26 = getelementptr inbounds %struct.Node__, ptr %5, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !16
  store ptr %27, ptr %6, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.tag_____BinaryOperatorExpression__, ptr %28, i32 0, i32 0
  %30 = load ptr, ptr %29, align 8, !tbaa !17
  %31 = getelementptr inbounds %struct.tag_____Token__, ptr %30, i32 0, i32 1
  %32 = getelementptr inbounds { ptr, i32 }, ptr %31, i32 0, i32 0
  %33 = load ptr, ptr %32, align 8
  %34 = getelementptr inbounds { ptr, i32 }, ptr %31, i32 0, i32 1
  %35 = load i32, ptr %34, align 8
  %36 = load ptr, ptr @mu_____string175, align 8
  %37 = load i32, ptr getelementptr inbounds ({ ptr, i32 }, ptr @mu_____string175, i32 0, i32 1), align 8
  %38 = call zeroext i8 @string__equals__(ptr %33, i32 %35, ptr %36, i32 %37)
  %39 = icmp ne i8 %38, 0
  br i1 %39, label %40, label %43

40:                                               ; preds = %25
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  call void @CGenerator__genDeclareStatement__(ptr noundef %41, ptr noundef %42)
  store i32 1, ptr %7, align 4
  br label %59

43:                                               ; preds = %25
  %44 = load ptr, ptr %6, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.tag_____BinaryOperatorExpression__, ptr %44, i32 0, i32 0
  %46 = load ptr, ptr %45, align 8, !tbaa !17
  %47 = getelementptr inbounds %struct.tag_____Token__, ptr %46, i32 0, i32 1
  %48 = getelementptr inbounds { ptr, i32 }, ptr %47, i32 0, i32 0
  %49 = load ptr, ptr %48, align 8
  %50 = getelementptr inbounds { ptr, i32 }, ptr %47, i32 0, i32 1
  %51 = load i32, ptr %50, align 8
  %52 = call zeroext i8 @Parser__isAssignOp__(ptr %49, i32 %51)
  %53 = icmp ne i8 %52, 0
  br i1 %53, label %54, label %57

54:                                               ; preds = %43
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = load ptr, ptr %6, align 8, !tbaa !5
  call void @CGenerator__genAssignStatement__(ptr noundef %55, ptr noundef %56)
  store i32 1, ptr %7, align 4
  br label %59

57:                                               ; preds = %43
  br label %58

58:                                               ; preds = %57
  store i32 0, ptr %7, align 4
  br label %59

59:                                               ; preds = %58, %54, %40
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %5) #5
  %60 = load i32, ptr %7, align 4
  switch i32 %60, label %97 [
    i32 0, label %61
    i32 1, label %96
  ]

61:                                               ; preds = %59
  br label %62

62:                                               ; preds = %61, %2
  %63 = load ptr, ptr %4, align 8, !tbaa !5
  %64 = load ptr, ptr %3, align 8, !tbaa !5
  %65 = getelementptr inbounds %struct.tag_____GenerateContext__, ptr %64, i32 0, i32 16
  store ptr %63, ptr %65, align 8, !tbaa !19
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #5
  call void @llvm.memset.p0.i64(ptr align 8 %8, i8 0, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr %9) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %9, ptr align 8 %8, i64 16, i1 false), !tbaa.struct !22
  %66 = load ptr, ptr %3, align 8, !tbaa !5
  %67 = load ptr, ptr %4, align 8, !tbaa !5
  %68 = getelementptr inbounds %struct.tag_____ExpressionStatement__, ptr %67, i32 0, i32 0
  %69 = getelementptr inbounds { i32, ptr }, ptr %68, i32 0, i32 0
  %70 = load i32, ptr %69, align 8
  %71 = getelementptr inbounds { i32, ptr }, ptr %68, i32 0, i32 1
  %72 = load ptr, ptr %71, align 8
  call void @CGenerator__genExpression__(ptr noundef %66, i32 %70, ptr %72, ptr noundef %9)
  %73 = load ptr, ptr @mu_____string324, align 8
  %74 = load i32, ptr getelementptr inbounds ({ ptr, i32 }, ptr @mu_____string324, i32 0, i32 1), align 8
  call void @StringBuilder__write__(ptr noundef %9, ptr %73, i32 %74)
  %75 = load ptr, ptr %3, align 8, !tbaa !5
  %76 = getelementptr inbounds %struct.tag_____GenerateContext__, ptr %75, i32 0, i32 5
  %77 = load ptr, ptr %76, align 8, !tbaa !23
  %78 = call { ptr, i32 } @StringBuilder__toString__(ptr noundef %9)
  %79 = getelementptr inbounds { ptr, i32 }, ptr %10, i32 0, i32 0
  %80 = extractvalue { ptr, i32 } %78, 0
  store ptr %80, ptr %79, align 8
  %81 = getelementptr inbounds { ptr, i32 }, ptr %10, i32 0, i32 1
  %82 = extractvalue { ptr, i32 } %78, 1
  store i32 %82, ptr %81, align 8
  %83 = getelementptr inbounds { ptr, i32 }, ptr %10, i32 0, i32 0
  %84 = load ptr, ptr %83, align 8
  %85 = getelementptr inbounds { ptr, i32 }, ptr %10, i32 0, i32 1
  %86 = load i32, ptr %85, align 8
  call void @CodeBuilder__writeLine__(ptr noundef %77, ptr %84, i32 %86)
  %87 = load ptr, ptr %3, align 8, !tbaa !5
  %88 = getelementptr inbounds %struct.tag_____GenerateContext__, ptr %87, i32 0, i32 17
  %89 = load i8, ptr %88, align 8, !tbaa !24
  %90 = icmp ne i8 %89, 0
  br i1 %90, label %91, label %95

91:                                               ; preds = %62
  %92 = load ptr, ptr %3, align 8, !tbaa !5
  call void @CGenerator__genUnreachable__(ptr noundef %92)
  %93 = load ptr, ptr %3, align 8, !tbaa !5
  %94 = getelementptr inbounds %struct.tag_____GenerateContext__, ptr %93, i32 0, i32 17
  store i8 0, ptr %94, align 8, !tbaa !24
  br label %95

95:                                               ; preds = %91, %62
  call void @llvm.lifetime.end.p0(i64 16, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #5
  br label %96

96:                                               ; preds = %95, %59
  ret void

97:                                               ; preds = %59
  unreachable
}

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genDeclareStatement__(ptr noundef, ptr noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genAssignStatement__(ptr noundef, ptr noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @Parser__isAssignOp__(ptr, i32) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !12, i64 0}
!10 = !{!"tag_____ExpressionStatement__", !11, i64 0}
!11 = !{!"", !12, i64 0, !6, i64 8}
!12 = !{!"int", !7, i64 0}
!13 = !{i64 0, i64 4, !14, i64 8, i64 8, !5}
!14 = !{!12, !12, i64 0}
!15 = !{!11, !12, i64 0}
!16 = !{!11, !6, i64 8}
!17 = !{!18, !6, i64 0}
!18 = !{!"tag_____BinaryOperatorExpression__", !6, i64 0, !11, i64 8, !11, i64 24}
!19 = !{!20, !6, i64 136}
!20 = !{!"tag_____GenerateContext__", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !12, i64 48, !12, i64 52, !6, i64 56, !6, i64 64, !6, i64 72, !21, i64 80, !12, i64 96, !21, i64 104, !12, i64 120, !6, i64 128, !6, i64 136, !7, i64 144}
!21 = !{!"", !6, i64 0, !12, i64 8}
!22 = !{i64 0, i64 8, !5, i64 8, i64 4, !14, i64 12, i64 4, !14}
!23 = !{!20, !6, i64 40}
!24 = !{!20, !7, i64 144}


; 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.string__ = type { ptr, i32 }
%struct.tag_____StringBuilder__ = type { ptr, i32, i32 }

@mu_____string175 = external dso_local local_unnamed_addr global %struct.string__, align 8
@mu_____string324 = external dso_local local_unnamed_addr global %struct.string__, align 8

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
declare dso_local void @StringBuilder__write__(ptr noundef, ptr, i32) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @string__equals__(ptr, i32, ptr, i32) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @CodeBuilder__writeLine__(ptr noundef, ptr, i32) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local { ptr, i32 } @StringBuilder__toString__(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genExpression__(ptr noundef, i32, ptr, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genUnreachable__(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @CGenerator__genExpressionStatement__(ptr noundef %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = alloca %struct.tag_____StringBuilder__, align 8
  %4 = load i32, ptr %1, align 8, !tbaa !5
  %5 = icmp eq i32 %4, 12
  br i1 %5, label %6, label %24

6:                                                ; preds = %2
  %.sroa.45.0..sroa_idx = getelementptr inbounds i8, ptr %1, i64 8
  %.sroa.45.0.copyload = load ptr, ptr %.sroa.45.0..sroa_idx, align 8, !tbaa !9
  %7 = load ptr, ptr %.sroa.45.0.copyload, align 8, !tbaa !11
  %8 = getelementptr inbounds i8, ptr %7, i64 8
  %9 = load ptr, ptr %8, align 8
  %10 = getelementptr inbounds i8, ptr %7, i64 16
  %11 = load i32, ptr %10, align 8
  %12 = load ptr, ptr @mu_____string175, align 8
  %13 = load i32, ptr getelementptr inbounds (i8, ptr @mu_____string175, i64 8), align 8
  %14 = tail call zeroext i8 @string__equals__(ptr %9, i32 %11, ptr %12, i32 %13)
  %.not = icmp eq i8 %14, 0
  br i1 %.not, label %16, label %15

15:                                               ; preds = %6
  tail call void @CGenerator__genDeclareStatement__(ptr noundef %0, ptr noundef nonnull %.sroa.45.0.copyload)
  br label %.thread

16:                                               ; preds = %6
  %17 = load ptr, ptr %.sroa.45.0.copyload, align 8, !tbaa !11
  %18 = getelementptr inbounds i8, ptr %17, i64 8
  %19 = load ptr, ptr %18, align 8
  %20 = getelementptr inbounds i8, ptr %17, i64 16
  %21 = load i32, ptr %20, align 8
  %22 = tail call zeroext i8 @Parser__isAssignOp__(ptr %19, i32 %21)
  %.not18 = icmp eq i8 %22, 0
  br i1 %.not18, label %24, label %23

23:                                               ; preds = %16
  tail call void @CGenerator__genAssignStatement__(ptr noundef %0, ptr noundef nonnull %.sroa.45.0.copyload)
  br label %.thread

24:                                               ; preds = %16, %2
  %25 = getelementptr inbounds i8, ptr %0, i64 136
  store ptr %1, ptr %25, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #3
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %3, i8 0, i64 16, i1 false)
  %26 = load i32, ptr %1, align 8
  %27 = getelementptr inbounds i8, ptr %1, i64 8
  %28 = load ptr, ptr %27, align 8
  call void @CGenerator__genExpression__(ptr noundef %0, i32 %26, ptr %28, ptr noundef nonnull %3)
  %29 = load ptr, ptr @mu_____string324, align 8
  %30 = load i32, ptr getelementptr inbounds (i8, ptr @mu_____string324, i64 8), align 8
  call void @StringBuilder__write__(ptr noundef nonnull %3, ptr %29, i32 %30)
  %31 = getelementptr inbounds i8, ptr %0, i64 40
  %32 = load ptr, ptr %31, align 8, !tbaa !17
  %33 = call { ptr, i32 } @StringBuilder__toString__(ptr noundef nonnull %3)
  %34 = extractvalue { ptr, i32 } %33, 0
  %35 = extractvalue { ptr, i32 } %33, 1
  call void @CodeBuilder__writeLine__(ptr noundef %32, ptr %34, i32 %35)
  %36 = getelementptr inbounds i8, ptr %0, i64 144
  %37 = load i8, ptr %36, align 8, !tbaa !18
  %.not19 = icmp eq i8 %37, 0
  br i1 %.not19, label %39, label %38

38:                                               ; preds = %24
  call void @CGenerator__genUnreachable__(ptr noundef nonnull %0)
  store i8 0, ptr %36, align 8, !tbaa !18
  br label %39

39:                                               ; preds = %38, %24
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  br label %.thread

.thread:                                          ; preds = %23, %15, %39
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genDeclareStatement__(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @CGenerator__genAssignStatement__(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @Parser__isAssignOp__(ptr, i32) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #2 = { 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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"tag_____BinaryOperatorExpression__", !10, i64 0, !13, i64 8, !13, i64 24}
!13 = !{!"", !6, i64 0, !10, i64 8}
!14 = !{!15, !10, i64 136}
!15 = !{!"tag_____GenerateContext__", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !6, i64 48, !6, i64 52, !10, i64 56, !10, i64 64, !10, i64 72, !16, i64 80, !6, i64 96, !16, i64 104, !6, i64 120, !10, i64 128, !10, i64 136, !7, i64 144}
!16 = !{!"", !10, i64 0, !6, i64 8}
!17 = !{!15, !10, i64 40}
!18 = !{!15, !7, i64 144}


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