; LLVM IR from bqi343/cp-notebook :: Contests/USACO Solutions/2016-17/Jan 2017/Bronze/17 Jan B2.ll (Z4testSt6vectorIiSaIiEE)

; 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.std::pair" = type { i32, i32 }

@ans = external dso_local global i32, align 4
@n = external dso_local global i32, align 4
@mov = external dso_local global [100 x %"struct.std::pair"], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z4testSt6vectorIiSaIiEE(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca [4 x [4 x i32]], align 16
  %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
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %29, %1
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 4
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %32

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %25, %13
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = icmp slt i32 %15, 4
  br i1 %16, label %18, label %17

17:                                               ; preds = %14
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %28

18:                                               ; preds = %14
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [4 x [4 x i32]], ptr %3, i64 0, i64 %20
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [4 x i32], ptr %21, i64 0, i64 %23
  store i32 0, ptr %24, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %18
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %7, align 4, !tbaa !9
  br label %14, !llvm.loop !11

28:                                               ; preds = %17
  br label %29

29:                                               ; preds = %28
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !13

32:                                               ; preds = %12
  %33 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #4
  %34 = load i32, ptr %33, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [4 x [4 x i32]], ptr %3, i64 0, i64 %35
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 1) #4
  %38 = load i32, ptr %37, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [4 x i32], ptr %36, i64 0, i64 %39
  store i32 1, ptr %40, align 4, !tbaa !9
  %41 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 1) #4
  %42 = load i32, ptr %41, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [4 x [4 x i32]], ptr %3, i64 0, i64 %43
  %45 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 2) #4
  %46 = load i32, ptr %45, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [4 x i32], ptr %44, i64 0, i64 %47
  store i32 1, ptr %48, align 4, !tbaa !9
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 2) #4
  %50 = load i32, ptr %49, align 4, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [4 x [4 x i32]], ptr %3, i64 0, i64 %51
  %53 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #4
  %54 = load i32, ptr %53, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [4 x i32], ptr %52, i64 0, i64 %55
  store i32 1, ptr %56, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %57

57:                                               ; preds = %83, %32
  %58 = load i32, ptr %8, align 4, !tbaa !9
  %59 = load i32, ptr @n, align 4, !tbaa !9
  %60 = icmp slt i32 %58, %59
  br i1 %60, label %62, label %61

61:                                               ; preds = %57
  store i32 8, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %86

62:                                               ; preds = %57
  %63 = load i32, ptr %8, align 4, !tbaa !9
  %64 = sext i32 %63 to i64
  %65 = getelementptr inbounds [100 x %"struct.std::pair"], ptr @mov, i64 0, i64 %64
  %66 = getelementptr inbounds %"struct.std::pair", ptr %65, i32 0, i32 0
  %67 = load i32, ptr %66, align 8, !tbaa !14
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [4 x [4 x i32]], ptr %3, i64 0, i64 %68
  %70 = load i32, ptr %8, align 4, !tbaa !9
  %71 = sext i32 %70 to i64
  %72 = getelementptr inbounds [100 x %"struct.std::pair"], ptr @mov, i64 0, i64 %71
  %73 = getelementptr inbounds %"struct.std::pair", ptr %72, i32 0, i32 1
  %74 = load i32, ptr %73, align 4, !tbaa !16
  %75 = sext i32 %74 to i64
  %76 = getelementptr inbounds [4 x i32], ptr %69, i64 0, i64 %75
  %77 = load i32, ptr %76, align 4, !tbaa !9
  %78 = icmp ne i32 %77, 0
  br i1 %78, label %79, label %82

79:                                               ; preds = %62
  %80 = load i32, ptr %4, align 4, !tbaa !9
  %81 = add nsw i32 %80, 1
  store i32 %81, ptr %4, align 4, !tbaa !9
  br label %82

82:                                               ; preds = %79, %62
  br label %83

83:                                               ; preds = %82
  %84 = load i32, ptr %8, align 4, !tbaa !9
  %85 = add nsw i32 %84, 1
  store i32 %85, ptr %8, align 4, !tbaa !9
  br label %57, !llvm.loop !17

86:                                               ; preds = %61
  %87 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @ans, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %88 = load i32, ptr %87, align 4, !tbaa !9
  store i32 %88, ptr @ans, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 64, ptr %3) #4
  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: 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #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 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 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = !{!15, !10, i64 0}
!15 = !{!"_ZTSSt4pairIiiE", !10, i64 0, !10, i64 4}
!16 = !{!15, !10, i64 4}
!17 = distinct !{!17, !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"

%"struct.std::pair" = type { i32, i32 }

@ans = external dso_local global i32, align 4
@n = external dso_local local_unnamed_addr global i32, align 4
@mov = external dso_local local_unnamed_addr global [100 x %"struct.std::pair"], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z4testSt6vectorIiSaIiEE(ptr noundef nonnull %0) local_unnamed_addr #0 {
  %2 = alloca [4 x [4 x i32]], align 16
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(64) %2, i8 0, i64 64, i1 false), !tbaa !5
  %4 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = sext i32 %5 to i64
  %7 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 1) #4
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [4 x [4 x i32]], ptr %2, i64 0, i64 %6, i64 %9
  store i32 1, ptr %10, align 4, !tbaa !5
  %11 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 1) #4
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 2) #4
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [4 x [4 x i32]], ptr %2, i64 0, i64 %13, i64 %16
  store i32 1, ptr %17, align 4, !tbaa !5
  %18 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 2) #4
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #4
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [4 x [4 x i32]], ptr %2, i64 0, i64 %20, i64 %23
  store i32 1, ptr %24, align 4, !tbaa !5
  %25 = load i32, ptr @n, align 4, !tbaa !5
  %26 = icmp sgt i32 %25, 0
  br i1 %26, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %1
  %wide.trip.count = zext nneg i32 %25 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %27 = icmp eq i32 %25, 1
  br i1 %27, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %spec.select.lcssa.ph = phi i32 [ poison, %.lr.ph.preheader ], [ %spec.select.1, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %spec.select.1, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %28 = getelementptr inbounds [100 x %"struct.std::pair"], ptr @mov, i64 0, i64 %indvars.iv.unr
  %29 = load i32, ptr %28, align 8, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds i8, ptr %28, i64 4
  %32 = load i32, ptr %31, align 4, !tbaa !11
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [4 x [4 x i32]], ptr %2, i64 0, i64 %30, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !5
  %.not.epil = icmp ne i32 %35, 0
  %36 = zext i1 %.not.epil to i32
  %spec.select.epil = add nuw nsw i32 %.unr, %36
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %1
  %.lcssa = phi i32 [ 0, %1 ], [ %spec.select.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %spec.select.epil, %.lr.ph.epil ]
  store i32 %.lcssa, ptr %3, align 4, !tbaa !5
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @ans, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %38 = load i32, ptr %37, align 4, !tbaa !5
  store i32 %38, ptr @ans, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %2) #4
  ret void

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %39 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %spec.select.1, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %40 = getelementptr inbounds [100 x %"struct.std::pair"], ptr @mov, i64 0, i64 %indvars.iv
  %41 = load i32, ptr %40, align 16, !tbaa !9
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds i8, ptr %40, i64 4
  %44 = load i32, ptr %43, align 4, !tbaa !11
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [4 x [4 x i32]], ptr %2, i64 0, i64 %42, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !5
  %.not = icmp ne i32 %47, 0
  %48 = zext i1 %.not to i32
  %spec.select = add nuw nsw i32 %39, %48
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %49 = getelementptr inbounds [100 x %"struct.std::pair"], ptr @mov, i64 0, i64 %indvars.iv.next
  %50 = load i32, ptr %49, align 8, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds i8, ptr %49, i64 4
  %53 = load i32, ptr %52, align 4, !tbaa !11
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds [4 x [4 x i32]], ptr %2, i64 0, i64 %51, i64 %54
  %56 = load i32, ptr %55, align 4, !tbaa !5
  %.not.1 = icmp ne i32 %56, 0
  %57 = zext i1 %.not.1 to i32
  %spec.select.1 = add nuw nsw i32 %spec.select, %57
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !12
}

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

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

; 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 #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 nounwind willreturn memory(argmem: write) }
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, !6, i64 0}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass