; LLVM IR from eyangch/competitive-programming :: CSES/Mathematics (common_divisors)

; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@N = external dso_local global i32, align 4
@x = external dso_local global [200000 x i32], align 16
@d = external dso_local global [1000001 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %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
  store i32 0, ptr %1, align 4
  %7 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %8 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %9 = getelementptr i8, ptr %8, i64 -24
  %10 = load i64, ptr %9, align 8
  %11 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %10
  %12 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %11, ptr noundef null)
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !8
  br label %14

14:                                               ; preds = %32, %0
  %15 = load i32, ptr %2, align 4, !tbaa !8
  %16 = load i32, ptr @N, align 4, !tbaa !8
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %35

19:                                               ; preds = %14
  %20 = load i32, ptr %2, align 4, !tbaa !8
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [200000 x i32], ptr @x, i64 0, i64 %21
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %22)
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [200000 x i32], ptr @x, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !8
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [1000001 x i32], ptr @d, i64 0, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !8
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %29, align 4, !tbaa !8
  br label %32

32:                                               ; preds = %19
  %33 = load i32, ptr %2, align 4, !tbaa !8
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %2, align 4, !tbaa !8
  br label %14, !llvm.loop !11

35:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 1000000, ptr %3, align 4, !tbaa !8
  br label %36

36:                                               ; preds = %72, %35
  %37 = load i32, ptr %3, align 4, !tbaa !8
  %38 = icmp sgt i32 %37, 0
  br i1 %38, label %40, label %39

39:                                               ; preds = %36
  store i32 5, ptr %4, align 4
  br label %75

40:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 1, ptr %6, align 4, !tbaa !8
  br label %41

41:                                               ; preds = %63, %40
  %42 = load i32, ptr %3, align 4, !tbaa !8
  %43 = load i32, ptr %6, align 4, !tbaa !8
  %44 = mul nsw i32 %42, %43
  %45 = icmp sle i32 %44, 1000000
  br i1 %45, label %47, label %46

46:                                               ; preds = %41
  store i32 8, ptr %4, align 4
  br label %66

47:                                               ; preds = %41
  %48 = load i32, ptr %3, align 4, !tbaa !8
  %49 = load i32, ptr %6, align 4, !tbaa !8
  %50 = mul nsw i32 %48, %49
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [1000001 x i32], ptr @d, i64 0, i64 %51
  %53 = load i32, ptr %52, align 4, !tbaa !8
  %54 = load i32, ptr %5, align 4, !tbaa !8
  %55 = add nsw i32 %54, %53
  store i32 %55, ptr %5, align 4, !tbaa !8
  %56 = load i32, ptr %5, align 4, !tbaa !8
  %57 = icmp sgt i32 %56, 1
  br i1 %57, label %58, label %62

58:                                               ; preds = %47
  %59 = load i32, ptr %3, align 4, !tbaa !8
  %60 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %59)
  %61 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %60, ptr noundef @.str)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %66

62:                                               ; preds = %47
  br label %63

63:                                               ; preds = %62
  %64 = load i32, ptr %6, align 4, !tbaa !8
  %65 = add nsw i32 %64, 1
  store i32 %65, ptr %6, align 4, !tbaa !8
  br label %41, !llvm.loop !13

66:                                               ; preds = %58, %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  %67 = load i32, ptr %4, align 4
  switch i32 %67, label %69 [
    i32 8, label %68
  ]

68:                                               ; preds = %66
  store i32 0, ptr %4, align 4
  br label %69

69:                                               ; preds = %68, %66
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  %70 = load i32, ptr %4, align 4
  switch i32 %70, label %75 [
    i32 0, label %71
  ]

71:                                               ; preds = %69
  br label %72

72:                                               ; preds = %71
  %73 = load i32, ptr %3, align 4, !tbaa !8
  %74 = add nsw i32 %73, -1
  store i32 %74, ptr %3, align 4, !tbaa !8
  br label %36, !llvm.loop !14

75:                                               ; preds = %69, %39
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  %76 = load i32, ptr %4, align 4
  switch i32 %76, label %82 [
    i32 5, label %77
    i32 1, label %80
  ]

77:                                               ; preds = %75
  %78 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
  %79 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %78, ptr noundef @.str)
  store i32 0, ptr %1, align 4
  br label %80

80:                                               ; preds = %77, %75
  %81 = load i32, ptr %1, align 4
  ret i32 %81

82:                                               ; preds = %75
  unreachable
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

attributes #0 = { 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 #1 = { "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 = { mustprogress 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@N = external dso_local global i32, align 4
@x = external dso_local global [200000 x i32], align 16
@d = external dso_local local_unnamed_addr global [1000001 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %2 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %3 = getelementptr i8, ptr %2, i64 -24
  %4 = load i64, ptr %3, align 8
  %5 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %4
  %6 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %5, ptr noundef null)
  %7 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  %8 = load i32, ptr @N, align 4, !tbaa !8
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %.lr.ph, label %.lr.ph37.preheader.preheader

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %10 = getelementptr inbounds [200000 x i32], ptr @x, i64 0, i64 %indvars.iv
  %11 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %10)
  %12 = load i32, ptr %10, align 4, !tbaa !8
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [1000001 x i32], ptr @d, i64 0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !8
  %16 = add nsw i32 %15, 1
  store i32 %16, ptr %14, align 4, !tbaa !8
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr @N, align 4, !tbaa !8
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %.lr.ph, label %.lr.ph37.preheader.preheader, !llvm.loop !11

.lr.ph37.preheader.preheader:                     ; preds = %.lr.ph, %0
  br label %.lr.ph37.preheader

.lr.ph37.preheader:                               ; preds = %._crit_edge.1, %.lr.ph37.preheader.preheader
  %indvars.iv44 = phi i64 [ 1000000, %.lr.ph37.preheader.preheader ], [ %indvars.iv.next45.1, %._crit_edge.1 ]
  br label %.lr.ph37

20:                                               ; preds = %.lr.ph37
  %indvars.iv.next42 = add nuw nsw i64 %indvars.iv41, 1
  %21 = mul nuw nsw i64 %indvars.iv.next42, %indvars.iv44
  %22 = icmp ugt i64 %21, 1000000
  br i1 %22, label %._crit_edge, label %.lr.ph37, !llvm.loop !13

.lr.ph37:                                         ; preds = %.lr.ph37.preheader, %20
  %indvars.iv41 = phi i64 [ 1, %.lr.ph37.preheader ], [ %indvars.iv.next42, %20 ]
  %.01935 = phi i32 [ 0, %.lr.ph37.preheader ], [ %26, %20 ]
  %23 = mul nuw nsw i64 %indvars.iv41, %indvars.iv44
  %24 = getelementptr inbounds [1000001 x i32], ptr @d, i64 0, i64 %23
  %25 = load i32, ptr %24, align 8, !tbaa !8
  %26 = add nsw i32 %25, %.01935
  %27 = icmp sgt i32 %26, 1
  br i1 %27, label %.loopexit, label %20

._crit_edge:                                      ; preds = %20
  %indvars.iv.next45 = add nsw i64 %indvars.iv44, -1
  br label %.lr.ph37.1

.lr.ph37.1:                                       ; preds = %33, %._crit_edge
  %indvars.iv41.1 = phi i64 [ 1, %._crit_edge ], [ %indvars.iv.next42.1, %33 ]
  %.01935.1 = phi i32 [ 0, %._crit_edge ], [ %31, %33 ]
  %28 = mul nuw nsw i64 %indvars.iv41.1, %indvars.iv.next45
  %29 = getelementptr inbounds [1000001 x i32], ptr @d, i64 0, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !8
  %31 = add nsw i32 %30, %.01935.1
  %32 = icmp sgt i32 %31, 1
  br i1 %32, label %.loopexit, label %33

33:                                               ; preds = %.lr.ph37.1
  %indvars.iv.next42.1 = add nuw nsw i64 %indvars.iv41.1, 1
  %34 = mul nuw nsw i64 %indvars.iv.next42.1, %indvars.iv.next45
  %35 = icmp ugt i64 %34, 1000000
  br i1 %35, label %._crit_edge.1, label %.lr.ph37.1, !llvm.loop !13

._crit_edge.1:                                    ; preds = %33
  %indvars.iv.next45.1 = add nsw i64 %indvars.iv44, -2
  %.not = icmp eq i64 %indvars.iv.next45, 1
  br i1 %.not, label %38, label %.lr.ph37.preheader, !llvm.loop !14

.loopexit:                                        ; preds = %.lr.ph37.1, %.lr.ph37
  %indvars.iv44.lcssa = phi i64 [ %indvars.iv44, %.lr.ph37 ], [ %indvars.iv.next45, %.lr.ph37.1 ]
  %36 = trunc nuw nsw i64 %indvars.iv44.lcssa to i32
  %37 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %36)
  br label %40

38:                                               ; preds = %._crit_edge.1
  %39 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
  br label %40

40:                                               ; preds = %.loopexit, %38
  %.sink = phi ptr [ %37, %.loopexit ], [ %39, %38 ]
  %41 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %.sink, ptr noundef nonnull @.str)
  ret i32 0
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { "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 = { mustprogress 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 = { 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" }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


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