; LLVM IR from lzyrapx/Competitive-Programming :: Retired_code/CDQ Divide and Conquer/luogu P3374 (强行cdq分治).ll (Z3cdqii)

; 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.Query = type { i32, i32, i32, i32 }

@q = external dso_local global [2020000 x %struct.Query], align 16
@tmp = external dso_local global [2020000 x %struct.Query], align 16
@ans = external dso_local global [2020000 x i32], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3cdqii(i32 noundef %0, i32 noundef %1) #0 {
  %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
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = icmp sge i32 %12, %13
  br i1 %14, label %15, label %16

15:                                               ; preds = %2
  br label %148

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = add nsw i32 %17, %18
  %20 = ashr i32 %19, 1
  store i32 %20, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %21 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %21, ptr %7, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %84, %16
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = icmp sle i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %87

27:                                               ; preds = %22
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %29
  %31 = getelementptr inbounds %struct.Query, ptr %30, i32 0, i32 1
  %32 = load i32, ptr %31, align 4, !tbaa !9
  %33 = icmp eq i32 %32, 0
  br i1 %33, label %34, label %50

34:                                               ; preds = %27
  %35 = load i32, ptr %7, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %36
  %38 = getelementptr inbounds %struct.Query, ptr %37, i32 0, i32 3
  %39 = load i32, ptr %38, align 4, !tbaa !11
  %40 = load i32, ptr %5, align 4, !tbaa !5
  %41 = icmp sle i32 %39, %40
  br i1 %41, label %42, label %50

42:                                               ; preds = %34
  %43 = load i32, ptr %7, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %44
  %46 = getelementptr inbounds %struct.Query, ptr %45, i32 0, i32 2
  %47 = load i32, ptr %46, align 8, !tbaa !12
  %48 = load i32, ptr %6, align 4, !tbaa !5
  %49 = add nsw i32 %48, %47
  store i32 %49, ptr %6, align 4, !tbaa !5
  br label %83

50:                                               ; preds = %34, %27
  %51 = load i32, ptr %7, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %52
  %54 = getelementptr inbounds %struct.Query, ptr %53, i32 0, i32 1
  %55 = load i32, ptr %54, align 4, !tbaa !9
  %56 = icmp sgt i32 %55, 0
  br i1 %56, label %57, label %82

57:                                               ; preds = %50
  %58 = load i32, ptr %7, align 4, !tbaa !5
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %59
  %61 = getelementptr inbounds %struct.Query, ptr %60, i32 0, i32 3
  %62 = load i32, ptr %61, align 4, !tbaa !11
  %63 = load i32, ptr %5, align 4, !tbaa !5
  %64 = icmp sgt i32 %62, %63
  br i1 %64, label %65, label %82

65:                                               ; preds = %57
  %66 = load i32, ptr %7, align 4, !tbaa !5
  %67 = sext i32 %66 to i64
  %68 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %67
  %69 = getelementptr inbounds %struct.Query, ptr %68, i32 0, i32 2
  %70 = load i32, ptr %69, align 8, !tbaa !12
  %71 = load i32, ptr %6, align 4, !tbaa !5
  %72 = mul nsw i32 %70, %71
  %73 = load i32, ptr %7, align 4, !tbaa !5
  %74 = sext i32 %73 to i64
  %75 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %74
  %76 = getelementptr inbounds %struct.Query, ptr %75, i32 0, i32 1
  %77 = load i32, ptr %76, align 4, !tbaa !9
  %78 = sext i32 %77 to i64
  %79 = getelementptr inbounds [2020000 x i32], ptr @ans, i64 0, i64 %78
  %80 = load i32, ptr %79, align 4, !tbaa !5
  %81 = add nsw i32 %80, %72
  store i32 %81, ptr %79, align 4, !tbaa !5
  br label %82

82:                                               ; preds = %65, %57, %50
  br label %83

83:                                               ; preds = %82, %42
  br label %84

84:                                               ; preds = %83
  %85 = load i32, ptr %7, align 4, !tbaa !5
  %86 = add nsw i32 %85, 1
  store i32 %86, ptr %7, align 4, !tbaa !5
  br label %22, !llvm.loop !13

87:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %88 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %88, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %89 = load i32, ptr %5, align 4, !tbaa !5
  %90 = add nsw i32 %89, 1
  store i32 %90, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %91 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %91, ptr %10, align 4, !tbaa !5
  br label %92

92:                                               ; preds = %122, %87
  %93 = load i32, ptr %10, align 4, !tbaa !5
  %94 = load i32, ptr %4, align 4, !tbaa !5
  %95 = icmp sle i32 %93, %94
  br i1 %95, label %97, label %96

96:                                               ; preds = %92
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %125

97:                                               ; preds = %92
  %98 = load i32, ptr %10, align 4, !tbaa !5
  %99 = sext i32 %98 to i64
  %100 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %99
  %101 = getelementptr inbounds %struct.Query, ptr %100, i32 0, i32 3
  %102 = load i32, ptr %101, align 4, !tbaa !11
  %103 = load i32, ptr %5, align 4, !tbaa !5
  %104 = icmp sle i32 %102, %103
  br i1 %104, label %105, label %113

105:                                              ; preds = %97
  %106 = load i32, ptr %10, align 4, !tbaa !5
  %107 = sext i32 %106 to i64
  %108 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %107
  %109 = load i32, ptr %8, align 4, !tbaa !5
  %110 = add nsw i32 %109, 1
  store i32 %110, ptr %8, align 4, !tbaa !5
  %111 = sext i32 %109 to i64
  %112 = getelementptr inbounds [2020000 x %struct.Query], ptr @tmp, i64 0, i64 %111
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %112, ptr align 16 %108, i64 16, i1 false), !tbaa.struct !15
  br label %121

113:                                              ; preds = %97
  %114 = load i32, ptr %10, align 4, !tbaa !5
  %115 = sext i32 %114 to i64
  %116 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %115
  %117 = load i32, ptr %9, align 4, !tbaa !5
  %118 = add nsw i32 %117, 1
  store i32 %118, ptr %9, align 4, !tbaa !5
  %119 = sext i32 %117 to i64
  %120 = getelementptr inbounds [2020000 x %struct.Query], ptr @tmp, i64 0, i64 %119
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %120, ptr align 16 %116, i64 16, i1 false), !tbaa.struct !15
  br label %121

121:                                              ; preds = %113, %105
  br label %122

122:                                              ; preds = %121
  %123 = load i32, ptr %10, align 4, !tbaa !5
  %124 = add nsw i32 %123, 1
  store i32 %124, ptr %10, align 4, !tbaa !5
  br label %92, !llvm.loop !16

125:                                              ; preds = %96
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %126 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %126, ptr %11, align 4, !tbaa !5
  br label %127

127:                                              ; preds = %139, %125
  %128 = load i32, ptr %11, align 4, !tbaa !5
  %129 = load i32, ptr %4, align 4, !tbaa !5
  %130 = icmp sle i32 %128, %129
  br i1 %130, label %132, label %131

131:                                              ; preds = %127
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %142

132:                                              ; preds = %127
  %133 = load i32, ptr %11, align 4, !tbaa !5
  %134 = sext i32 %133 to i64
  %135 = getelementptr inbounds [2020000 x %struct.Query], ptr @tmp, i64 0, i64 %134
  %136 = load i32, ptr %11, align 4, !tbaa !5
  %137 = sext i32 %136 to i64
  %138 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %137
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %138, ptr align 16 %135, i64 16, i1 false), !tbaa.struct !15
  br label %139

139:                                              ; preds = %132
  %140 = load i32, ptr %11, align 4, !tbaa !5
  %141 = add nsw i32 %140, 1
  store i32 %141, ptr %11, align 4, !tbaa !5
  br label %127, !llvm.loop !17

142:                                              ; preds = %131
  %143 = load i32, ptr %3, align 4, !tbaa !5
  %144 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z3cdqii(i32 noundef %143, i32 noundef %144)
  %145 = load i32, ptr %5, align 4, !tbaa !5
  %146 = add nsw i32 %145, 1
  %147 = load i32, ptr %4, align 4, !tbaa !5
  call void @_Z3cdqii(i32 noundef %146, i32 noundef %147)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %148

148:                                              ; preds = %142, %15
  ret void
}

; 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: 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) #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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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++ TBAA"}
!9 = !{!10, !6, i64 4}
!10 = !{!"_ZTS5Query", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12}
!11 = !{!10, !6, i64 12}
!12 = !{!10, !6, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{i64 0, i64 4, !5, i64 4, i64 4, !5, i64 8, i64 4, !5, i64 12, i64 4, !5}
!16 = distinct !{!16, !14}
!17 = distinct !{!17, !14}


; 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.Query = type { i32, i32, i32, i32 }

@q = external dso_local local_unnamed_addr global [2020000 x %struct.Query], align 16
@tmp = external dso_local local_unnamed_addr global [2020000 x %struct.Query], align 16
@ans = external dso_local local_unnamed_addr global [2020000 x i32], align 16

; Function Attrs: mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z3cdqii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not66 = icmp slt i32 %0, %1
  br i1 %.not66, label %.lr.ph69.preheader, label %tailrecurse._crit_edge

.lr.ph69.preheader:                               ; preds = %2
  %3 = add i32 %1, 1
  br label %.lr.ph69

.lr.ph69:                                         ; preds = %.lr.ph69.preheader, %tailrecurse
  %.tr67 = phi i32 [ %9, %tailrecurse ], [ %0, %.lr.ph69.preheader ]
  %4 = add nsw i32 %.tr67, %1
  %5 = ashr i32 %4, 1
  %6 = sext i32 %.tr67 to i64
  %smax = tail call i32 @llvm.smax.i32(i32 %.tr67, i32 %1)
  %7 = add i32 %smax, 1
  br label %10

8:                                                ; preds = %.thread
  %9 = add nsw i32 %5, 1
  %.not5259 = icmp sgt i32 %.tr67, %1
  br i1 %.not5259, label %tailrecurse, label %.lr.ph

10:                                               ; preds = %.lr.ph69, %.thread
  %indvars.iv = phi i64 [ %6, %.lr.ph69 ], [ %indvars.iv.next, %.thread ]
  %.04657 = phi i32 [ 0, %.lr.ph69 ], [ %.147, %.thread ]
  %11 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %indvars.iv
  %12 = getelementptr inbounds i8, ptr %11, i64 4
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = icmp eq i32 %13, 0
  br i1 %14, label %15, label %22

15:                                               ; preds = %10
  %16 = getelementptr inbounds i8, ptr %11, i64 12
  %17 = load i32, ptr %16, align 4, !tbaa !10
  %.not55 = icmp sgt i32 %17, %5
  br i1 %.not55, label %.thread, label %18

18:                                               ; preds = %15
  %19 = getelementptr inbounds i8, ptr %11, i64 8
  %20 = load i32, ptr %19, align 8, !tbaa !11
  %21 = add nsw i32 %20, %.04657
  br label %.thread

22:                                               ; preds = %10
  %23 = icmp sgt i32 %13, 0
  br i1 %23, label %24, label %.thread

24:                                               ; preds = %22
  %25 = getelementptr inbounds i8, ptr %11, i64 12
  %26 = load i32, ptr %25, align 4, !tbaa !10
  %27 = icmp sgt i32 %26, %5
  br i1 %27, label %28, label %.thread

28:                                               ; preds = %24
  %29 = getelementptr inbounds i8, ptr %11, i64 8
  %30 = load i32, ptr %29, align 8, !tbaa !11
  %31 = mul nsw i32 %30, %.04657
  %32 = zext nneg i32 %13 to i64
  %33 = getelementptr inbounds [2020000 x i32], ptr @ans, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !12
  %35 = add nsw i32 %34, %31
  store i32 %35, ptr %33, align 4, !tbaa !12
  br label %.thread

.thread:                                          ; preds = %15, %18, %28, %24, %22
  %.147 = phi i32 [ %21, %18 ], [ %.04657, %28 ], [ %.04657, %24 ], [ %.04657, %22 ], [ %.04657, %15 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
  %exitcond.not = icmp eq i32 %7, %lftr.wideiv
  br i1 %exitcond.not, label %8, label %10, !llvm.loop !13

.preheader:                                       ; preds = %.lr.ph
  br i1 %.not5259, label %tailrecurse, label %.lr.ph65.preheader

.lr.ph65.preheader:                               ; preds = %.preheader
  %36 = shl nsw i64 %6, 4
  %scevgep = getelementptr i8, ptr @q, i64 %36
  %scevgep76 = getelementptr i8, ptr @tmp, i64 %36
  %37 = sub i32 %1, %.tr67
  %38 = zext i32 %37 to i64
  %39 = shl nuw nsw i64 %38, 4
  %40 = add nuw nsw i64 %39, 16
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(1) %scevgep, ptr noundef nonnull align 16 dereferenceable(1) %scevgep76, i64 %40, i1 false)
  br label %tailrecurse

.lr.ph:                                           ; preds = %8, %.lr.ph
  %indvars.iv71 = phi i64 [ %indvars.iv.next72, %.lr.ph ], [ %6, %8 ]
  %.04261 = phi i32 [ %.1, %.lr.ph ], [ %9, %8 ]
  %.04360 = phi i32 [ %.144, %.lr.ph ], [ %.tr67, %8 ]
  %41 = getelementptr inbounds [2020000 x %struct.Query], ptr @q, i64 0, i64 %indvars.iv71
  %42 = getelementptr inbounds i8, ptr %41, i64 12
  %43 = load i32, ptr %42, align 4, !tbaa !10
  %.not54 = icmp sle i32 %43, %5
  %.04360.sink = select i1 %.not54, i32 %.04360, i32 %.04261
  %44 = zext i1 %.not54 to i32
  %.144 = add nsw i32 %.04360, %44
  %not..not54 = xor i1 %.not54, true
  %45 = zext i1 %not..not54 to i32
  %.1 = add nsw i32 %.04261, %45
  %46 = sext i32 %.04360.sink to i64
  %47 = getelementptr inbounds [2020000 x %struct.Query], ptr @tmp, i64 0, i64 %46
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %47, ptr noundef nonnull align 16 dereferenceable(16) %41, i64 16, i1 false)
  %indvars.iv.next72 = add nsw i64 %indvars.iv71, 1
  %lftr.wideiv74 = trunc i64 %indvars.iv.next72 to i32
  %exitcond75.not = icmp eq i32 %3, %lftr.wideiv74
  br i1 %exitcond75.not, label %.preheader, label %.lr.ph, !llvm.loop !15

tailrecurse:                                      ; preds = %8, %.lr.ph65.preheader, %.preheader
  tail call void @_Z3cdqii(i32 noundef %.tr67, i32 noundef %5)
  %.not = icmp slt i32 %9, %1
  br i1 %.not, label %.lr.ph69, label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %2
  ret void
}

; Function Attrs: mustprogress 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) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #2

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) 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 nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind speculatable 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, !7, i64 4}
!6 = !{!"_ZTS5Query", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 12}
!11 = !{!6, !7, i64 8}
!12 = !{!7, !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


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