; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (1010)

; 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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@ex = external dso_local global i32, align 4
@ey = external dso_local global i32, align 4
@t = external dso_local global i32, align 4
@success = external dso_local global i8, align 1
@maze = external dso_local global [10 x [10 x i8]], align 16
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsiii(i32 noundef, i32 noundef, i32 noundef) #0

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

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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  br label %8

8:                                                ; preds = %112, %0
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @m, ptr noundef @t)
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = load i32, ptr @m, align 4, !tbaa !5
  %12 = add nsw i32 %10, %11
  %13 = load i32, ptr @t, align 4, !tbaa !5
  %14 = add nsw i32 %12, %13
  %15 = icmp ne i32 %14, 0
  br i1 %15, label %16, label %113

16:                                               ; preds = %8
  %17 = call i32 @getchar()
  store i32 0, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %83, %16
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = load i32, ptr @n, align 4, !tbaa !5
  %21 = icmp sle i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  store i32 4, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %86

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 1, ptr %7, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %78, %23
  %25 = load i32, ptr %7, align 4, !tbaa !5
  %26 = load i32, ptr @m, align 4, !tbaa !5
  %27 = icmp sle i32 %25, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %24
  store i32 7, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %81

29:                                               ; preds = %24
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %31
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [10 x i8], ptr %32, i64 0, i64 %34
  %36 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %35)
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %38
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [10 x i8], ptr %39, i64 0, i64 %41
  %43 = load i8, ptr %42, align 1, !tbaa !9
  %44 = sext i8 %43 to i32
  %45 = icmp eq i32 %44, 83
  br i1 %45, label %46, label %49

46:                                               ; preds = %29
  %47 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %47, ptr %2, align 4, !tbaa !5
  %48 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %48, ptr %3, align 4, !tbaa !5
  br label %77

49:                                               ; preds = %29
  %50 = load i32, ptr %5, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %51
  %53 = load i32, ptr %7, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds [10 x i8], ptr %52, i64 0, i64 %54
  %56 = load i8, ptr %55, align 1, !tbaa !9
  %57 = sext i8 %56 to i32
  %58 = icmp eq i32 %57, 68
  br i1 %58, label %59, label %62

59:                                               ; preds = %49
  %60 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %60, ptr @ex, align 4, !tbaa !5
  %61 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %61, ptr @ey, align 4, !tbaa !5
  br label %76

62:                                               ; preds = %49
  %63 = load i32, ptr %5, align 4, !tbaa !5
  %64 = sext i32 %63 to i64
  %65 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %64
  %66 = load i32, ptr %7, align 4, !tbaa !5
  %67 = sext i32 %66 to i64
  %68 = getelementptr inbounds [10 x i8], ptr %65, i64 0, i64 %67
  %69 = load i8, ptr %68, align 1, !tbaa !9
  %70 = sext i8 %69 to i32
  %71 = icmp eq i32 %70, 88
  br i1 %71, label %72, label %75

72:                                               ; preds = %62
  %73 = load i32, ptr %4, align 4, !tbaa !5
  %74 = add nsw i32 %73, 1
  store i32 %74, ptr %4, align 4, !tbaa !5
  br label %75

75:                                               ; preds = %72, %62
  br label %76

76:                                               ; preds = %75, %59
  br label %77

77:                                               ; preds = %76, %46
  br label %78

78:                                               ; preds = %77
  %79 = load i32, ptr %7, align 4, !tbaa !5
  %80 = add nsw i32 %79, 1
  store i32 %80, ptr %7, align 4, !tbaa !5
  br label %24, !llvm.loop !10

81:                                               ; preds = %28
  %82 = call i32 @getchar()
  br label %83

83:                                               ; preds = %81
  %84 = load i32, ptr %5, align 4, !tbaa !5
  %85 = add nsw i32 %84, 1
  store i32 %85, ptr %5, align 4, !tbaa !5
  br label %18, !llvm.loop !12

86:                                               ; preds = %22
  store i8 0, ptr @success, align 1, !tbaa !13
  %87 = load i32, ptr %2, align 4, !tbaa !5
  %88 = sext i32 %87 to i64
  %89 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %88
  %90 = load i32, ptr %3, align 4, !tbaa !5
  %91 = sext i32 %90 to i64
  %92 = getelementptr inbounds [10 x i8], ptr %89, i64 0, i64 %91
  store i8 88, ptr %92, align 1, !tbaa !9
  %93 = load i32, ptr @n, align 4, !tbaa !5
  %94 = load i32, ptr @m, align 4, !tbaa !5
  %95 = mul nsw i32 %93, %94
  %96 = load i32, ptr %4, align 4, !tbaa !5
  %97 = sub nsw i32 %95, %96
  %98 = load i32, ptr @t, align 4, !tbaa !5
  %99 = icmp sle i32 %97, %98
  br i1 %99, label %100, label %102

100:                                              ; preds = %86
  %101 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %112

102:                                              ; preds = %86
  %103 = load i32, ptr %2, align 4, !tbaa !5
  %104 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z3dfsiii(i32 noundef %103, i32 noundef %104, i32 noundef 0)
  %105 = load i8, ptr @success, align 1, !tbaa !13, !range !15, !noundef !16
  %106 = trunc i8 %105 to i1
  br i1 %106, label %107, label %109

107:                                              ; preds = %102
  %108 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %111

109:                                              ; preds = %102
  %110 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %111

111:                                              ; preds = %109, %107
  br label %112

112:                                              ; preds = %111, %100
  br label %8, !llvm.loop !17

113:                                              ; preds = %8
  store i32 0, ptr %1, align 4
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %114 = load i32, ptr %1, align 4
  ret i32 %114
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

; Function Attrs: inlinehint mustprogress uwtable
declare i32 @getchar() #4

declare i32 @printf(ptr noundef, ...) #3

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 = { mustprogress norecurse 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 = { "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 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}
!13 = !{!14, !14, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{i8 0, i8 2}
!16 = !{}
!17 = distinct !{!17, !11}


; 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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@ex = external dso_local local_unnamed_addr global i32, align 4
@ey = external dso_local local_unnamed_addr global i32, align 4
@t = external dso_local global i32, align 4
@success = external dso_local local_unnamed_addr global i8, align 1
@maze = external dso_local global [10 x [10 x i8]], align 16
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m, ptr noundef nonnull @t)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = load i32, ptr @m, align 4, !tbaa !5
  %4 = add nsw i32 %3, %2
  %5 = load i32, ptr @t, align 4, !tbaa !5
  %6 = sub i32 0, %5
  %.not53 = icmp eq i32 %4, %6
  br i1 %.not53, label %._crit_edge58, label %.lr.ph57

.lr.ph57:                                         ; preds = %0, %35
  %.02555 = phi i32 [ %.126.lcssa, %35 ], [ undef, %0 ]
  %.02854 = phi i32 [ %.129.lcssa, %35 ], [ undef, %0 ]
  %7 = tail call i32 @getchar()
  %8 = load i32, ptr @n, align 4, !tbaa !5
  %.not3343 = icmp slt i32 %8, 1
  br i1 %.not3343, label %._crit_edge48, label %.preheader

.preheader:                                       ; preds = %.lr.ph57, %._crit_edge
  %indvars.iv61 = phi i64 [ %indvars.iv.next62, %._crit_edge ], [ 1, %.lr.ph57 ]
  %.02446 = phi i32 [ %.1.lcssa, %._crit_edge ], [ 0, %.lr.ph57 ]
  %.12645 = phi i32 [ %.227.lcssa, %._crit_edge ], [ %.02555, %.lr.ph57 ]
  %.12944 = phi i32 [ %.230.lcssa, %._crit_edge ], [ %.02854, %.lr.ph57 ]
  %9 = load i32, ptr @m, align 4, !tbaa !5
  %.not3536 = icmp slt i32 %9, 1
  br i1 %.not3536, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %10 = trunc nuw nsw i64 %indvars.iv61 to i32
  br label %21

._crit_edge48:                                    ; preds = %._crit_edge, %.lr.ph57
  %.129.lcssa = phi i32 [ %.02854, %.lr.ph57 ], [ %.230.lcssa, %._crit_edge ]
  %.126.lcssa = phi i32 [ %.02555, %.lr.ph57 ], [ %.227.lcssa, %._crit_edge ]
  %.024.lcssa = phi i32 [ 0, %.lr.ph57 ], [ %.1.lcssa, %._crit_edge ]
  %.lcssa = phi i32 [ %8, %.lr.ph57 ], [ %19, %._crit_edge ]
  store i8 0, ptr @success, align 1, !tbaa !9
  %11 = sext i32 %.129.lcssa to i64
  %12 = sext i32 %.126.lcssa to i64
  %13 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %11, i64 %12
  store i8 88, ptr %13, align 1, !tbaa !11
  %14 = load i32, ptr @m, align 4, !tbaa !5
  %15 = mul nsw i32 %14, %.lcssa
  %16 = sub nsw i32 %15, %.024.lcssa
  %17 = load i32, ptr @t, align 4, !tbaa !5
  %.not34 = icmp sgt i32 %16, %17
  br i1 %.not34, label %32, label %35

._crit_edge:                                      ; preds = %29, %.preheader
  %.230.lcssa = phi i32 [ %.12944, %.preheader ], [ %.331, %29 ]
  %.227.lcssa = phi i32 [ %.12645, %.preheader ], [ %.3, %29 ]
  %.1.lcssa = phi i32 [ %.02446, %.preheader ], [ %.2, %29 ]
  %18 = tail call i32 @getchar()
  %indvars.iv.next62 = add nuw nsw i64 %indvars.iv61, 1
  %19 = load i32, ptr @n, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %.not33.not = icmp slt i64 %indvars.iv61, %20
  br i1 %.not33.not, label %.preheader, label %._crit_edge48, !llvm.loop !12

21:                                               ; preds = %.lr.ph, %29
  %indvars.iv = phi i64 [ 1, %.lr.ph ], [ %indvars.iv.next, %29 ]
  %.139 = phi i32 [ %.02446, %.lr.ph ], [ %.2, %29 ]
  %.22738 = phi i32 [ %.12645, %.lr.ph ], [ %.3, %29 ]
  %.23037 = phi i32 [ %.12944, %.lr.ph ], [ %.331, %29 ]
  %22 = getelementptr inbounds [10 x [10 x i8]], ptr @maze, i64 0, i64 %indvars.iv61, i64 %indvars.iv
  %23 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %22)
  %24 = load i8, ptr %22, align 1, !tbaa !11
  %25 = trunc nuw nsw i64 %indvars.iv to i32
  switch i8 %24, label %.fold.split [
    i8 83, label %29
    i8 68, label %26
    i8 88, label %27
  ]

26:                                               ; preds = %21
  store i32 %10, ptr @ex, align 4, !tbaa !5
  store i32 %25, ptr @ey, align 4, !tbaa !5
  br label %29

27:                                               ; preds = %21
  %28 = add nsw i32 %.139, 1
  br label %29

.fold.split:                                      ; preds = %21
  br label %29

29:                                               ; preds = %21, %.fold.split, %27, %26
  %.331 = phi i32 [ %.23037, %26 ], [ %.23037, %27 ], [ %10, %21 ], [ %.23037, %.fold.split ]
  %.3 = phi i32 [ %.22738, %26 ], [ %.22738, %27 ], [ %25, %21 ], [ %.22738, %.fold.split ]
  %.2 = phi i32 [ %.139, %26 ], [ %28, %27 ], [ %.139, %21 ], [ %.139, %.fold.split ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %30 = load i32, ptr @m, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %.not35.not = icmp slt i64 %indvars.iv, %31
  br i1 %.not35.not, label %21, label %._crit_edge, !llvm.loop !14

32:                                               ; preds = %._crit_edge48
  tail call void @_Z3dfsiii(i32 noundef %.129.lcssa, i32 noundef %.126.lcssa, i32 noundef 0)
  %33 = load i8, ptr @success, align 1, !tbaa !9, !range !15, !noundef !16
  %34 = trunc nuw i8 %33 to i1
  %.str.3..str.2 = select i1 %34, ptr @.str.3, ptr @.str.2
  br label %35

35:                                               ; preds = %32, %._crit_edge48
  %.str.3.sink = phi ptr [ @.str.2, %._crit_edge48 ], [ %.str.3..str.2, %32 ]
  %36 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.3.sink)
  %37 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m, ptr noundef nonnull @t)
  %38 = load i32, ptr @n, align 4, !tbaa !5
  %39 = load i32, ptr @m, align 4, !tbaa !5
  %40 = add nsw i32 %39, %38
  %41 = load i32, ptr @t, align 4, !tbaa !5
  %42 = sub i32 0, %41
  %.not = icmp eq i32 %40, %42
  br i1 %.not, label %._crit_edge58, label %.lr.ph57, !llvm.loop !17

._crit_edge58:                                    ; preds = %35, %0
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress nofree nounwind uwtable
declare noundef i32 @getchar() local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #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 norecurse 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 = { 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 = { inlinehint mustprogress nofree 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" }

!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 = !{!"bool", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}
!15 = !{i8 0, i8 2}
!16 = !{}
!17 = distinct !{!17, !13}


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