; LLVM IR from Mohammed-Shoaib/Coding-Problems :: CodeChef/Easy/E0084.ll (Z10preprocessiRSt6vectorIiSaIiEERS_ISt4pairIiiESaIS4_EE)

; 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::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10preprocessiRSt6vectorIiSaIiEERS_ISt4pairIiiESaIS4_EE(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.std::reverse_iterator", align 8
  %8 = alloca %"class.std::reverse_iterator", align 8
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  %10 = load ptr, ptr %6, align 8, !tbaa !9
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %7, ptr noundef nonnull align 8 dereferenceable(24) %10) #4
  %11 = load ptr, ptr %6, align 8, !tbaa !9
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE4rendEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %8, ptr noundef nonnull align 8 dereferenceable(24) %11) #4
  call void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef %7, ptr noundef %8)
  %12 = load ptr, ptr %6, align 8, !tbaa !9
  %13 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef 0) #4
  %14 = getelementptr inbounds %"struct.std::pair", ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 4, !tbaa !11
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = add nsw i32 %15, %16
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = load ptr, ptr %6, align 8, !tbaa !9
  %20 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %19, i64 noundef 0) #4
  %21 = getelementptr inbounds %"struct.std::pair", ptr %20, i32 0, i32 1
  %22 = load i32, ptr %21, align 4, !tbaa !13
  %23 = sext i32 %22 to i64
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %18, i64 noundef %23) #4
  store i32 %17, ptr %24, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  store i32 1, ptr %9, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %89, %3
  %26 = load i32, ptr %9, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = load ptr, ptr %6, align 8, !tbaa !9
  %29 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %28) #4
  %30 = icmp ult i64 %27, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %92

32:                                               ; preds = %25
  %33 = load ptr, ptr %6, align 8, !tbaa !9
  %34 = load i32, ptr %9, align 4, !tbaa !5
  %35 = sub nsw i32 %34, 1
  %36 = sext i32 %35 to i64
  %37 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %33, i64 noundef %36) #4
  %38 = getelementptr inbounds %"struct.std::pair", ptr %37, i32 0, i32 0
  %39 = load i32, ptr %38, align 4, !tbaa !11
  %40 = load ptr, ptr %6, align 8, !tbaa !9
  %41 = load i32, ptr %9, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %40, i64 noundef %42) #4
  %44 = getelementptr inbounds %"struct.std::pair", ptr %43, i32 0, i32 0
  %45 = load i32, ptr %44, align 4, !tbaa !11
  %46 = sub nsw i32 %39, %45
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = icmp sle i32 %46, %47
  br i1 %48, label %49, label %70

49:                                               ; preds = %32
  %50 = load ptr, ptr %5, align 8, !tbaa !9
  %51 = load ptr, ptr %6, align 8, !tbaa !9
  %52 = load i32, ptr %9, align 4, !tbaa !5
  %53 = sub nsw i32 %52, 1
  %54 = sext i32 %53 to i64
  %55 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef %54) #4
  %56 = getelementptr inbounds %"struct.std::pair", ptr %55, i32 0, i32 1
  %57 = load i32, ptr %56, align 4, !tbaa !13
  %58 = sext i32 %57 to i64
  %59 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %50, i64 noundef %58) #4
  %60 = load i32, ptr %59, align 4, !tbaa !5
  %61 = load ptr, ptr %5, align 8, !tbaa !9
  %62 = load ptr, ptr %6, align 8, !tbaa !9
  %63 = load i32, ptr %9, align 4, !tbaa !5
  %64 = sext i32 %63 to i64
  %65 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %62, i64 noundef %64) #4
  %66 = getelementptr inbounds %"struct.std::pair", ptr %65, i32 0, i32 1
  %67 = load i32, ptr %66, align 4, !tbaa !13
  %68 = sext i32 %67 to i64
  %69 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %61, i64 noundef %68) #4
  store i32 %60, ptr %69, align 4, !tbaa !5
  br label %88

70:                                               ; preds = %32
  %71 = load ptr, ptr %6, align 8, !tbaa !9
  %72 = load i32, ptr %9, align 4, !tbaa !5
  %73 = sext i32 %72 to i64
  %74 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %71, i64 noundef %73) #4
  %75 = getelementptr inbounds %"struct.std::pair", ptr %74, i32 0, i32 0
  %76 = load i32, ptr %75, align 4, !tbaa !11
  %77 = load i32, ptr %4, align 4, !tbaa !5
  %78 = add nsw i32 %76, %77
  %79 = load ptr, ptr %5, align 8, !tbaa !9
  %80 = load ptr, ptr %6, align 8, !tbaa !9
  %81 = load i32, ptr %9, align 4, !tbaa !5
  %82 = sext i32 %81 to i64
  %83 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %80, i64 noundef %82) #4
  %84 = getelementptr inbounds %"struct.std::pair", ptr %83, i32 0, i32 1
  %85 = load i32, ptr %84, align 4, !tbaa !13
  %86 = sext i32 %85 to i64
  %87 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %79, i64 noundef %86) #4
  store i32 %78, ptr %87, align 4, !tbaa !5
  br label %88

88:                                               ; preds = %70, %49
  br label %89

89:                                               ; preds = %88
  %90 = load i32, ptr %9, align 4, !tbaa !5
  %91 = add nsw i32 %90, 1
  store i32 %91, ptr %9, align 4, !tbaa !5
  br label %25, !llvm.loop !14

92:                                               ; preds = %31
  ret void
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { 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 #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 = { 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, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; 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::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10preprocessiRSt6vectorIiSaIiEERS_ISt4pairIiiESaIS4_EE(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) local_unnamed_addr #0 {
  %4 = alloca %"class.std::reverse_iterator", align 8
  %5 = alloca %"class.std::reverse_iterator", align 8
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %4, ptr noundef nonnull align 8 dereferenceable(24) %2) #3
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %5, ptr noundef nonnull align 8 dereferenceable(24) %2) #3
  call void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef nonnull %4, ptr noundef nonnull %5)
  %6 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef 0) #3
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = add nsw i32 %7, %0
  %9 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef 0) #3
  %10 = getelementptr inbounds i8, ptr %9, i64 4
  %11 = load i32, ptr %10, align 4, !tbaa !10
  %12 = sext i32 %11 to i64
  %13 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %12) #3
  store i32 %8, ptr %13, align 4, !tbaa !11
  %14 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #3
  %15 = icmp ugt i64 %14, 1
  br i1 %15, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %33, %3
  ret void

.lr.ph:                                           ; preds = %3, %33
  %indvars.iv = phi i64 [ %indvars.iv.next, %33 ], [ 1, %3 ]
  %16 = add nsw i64 %indvars.iv, -1
  %17 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %16) #3
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #3
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = sub nsw i32 %18, %20
  %.not = icmp sgt i32 %21, %0
  br i1 %.not, label %29, label %22

22:                                               ; preds = %.lr.ph
  %23 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %16) #3
  %24 = getelementptr inbounds i8, ptr %23, i64 4
  %25 = load i32, ptr %24, align 4, !tbaa !10
  %26 = sext i32 %25 to i64
  %27 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %26) #3
  %28 = load i32, ptr %27, align 4, !tbaa !11
  br label %33

29:                                               ; preds = %.lr.ph
  %30 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #3
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = add nsw i32 %31, %0
  br label %33

33:                                               ; preds = %22, %29
  %.sink = phi i32 [ %28, %22 ], [ %32, %29 ]
  %34 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #3
  %35 = getelementptr inbounds i8, ptr %34, i64 4
  %36 = load i32, ptr %35, align 4, !tbaa !10
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %37) #3
  store i32 %.sink, ptr %38, align 4, !tbaa !11
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %39 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #3
  %40 = icmp ugt i64 %39, %indvars.iv.next
  br i1 %40, label %.lr.ph, label %._crit_edge, !llvm.loop !12
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 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 = { 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 #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 = { 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, !7, i64 0}
!6 = !{!"_ZTSSt4pairIiiE", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass