; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 3/1261. Tips (main)

; 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" }

@_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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i8, align 1
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  store i64 1, ptr %3, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %108, %0
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = icmp sle i64 %14, 2097152
  br i1 %15, label %17, label %16

16:                                               ; preds = %13
  store i32 2, ptr %4, align 4
  br label %111

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %18 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %18, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  store i64 0, ptr %7, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %42, %17
  %20 = load i64, ptr %6, align 8, !tbaa !5
  %21 = icmp sgt i64 %20, 0
  br i1 %21, label %22, label %45

22:                                               ; preds = %19
  %23 = load i64, ptr %7, align 8, !tbaa !5
  %24 = icmp eq i64 %23, 0
  br i1 %24, label %25, label %32

25:                                               ; preds = %22
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = and i64 %26, 1
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = add nsw i64 %28, %27
  store i64 %29, ptr %5, align 8, !tbaa !5
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = add nsw i64 %30, 1
  store i64 %31, ptr %7, align 8, !tbaa !5
  br label %42

32:                                               ; preds = %22
  %33 = load i64, ptr %7, align 8, !tbaa !5
  %34 = mul nsw i64 3, %33
  %35 = load i64, ptr %6, align 8, !tbaa !5
  %36 = and i64 %35, 1
  %37 = mul nsw i64 %34, %36
  %38 = load i64, ptr %5, align 8, !tbaa !5
  %39 = add nsw i64 %38, %37
  store i64 %39, ptr %5, align 8, !tbaa !5
  %40 = load i64, ptr %7, align 8, !tbaa !5
  %41 = mul nsw i64 %40, 3
  store i64 %41, ptr %7, align 8, !tbaa !5
  br label %42

42:                                               ; preds = %32, %25
  %43 = load i64, ptr %6, align 8, !tbaa !5
  %44 = ashr i64 %43, 1
  store i64 %44, ptr %6, align 8, !tbaa !5
  br label %19, !llvm.loop !9

45:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %46 = load i64, ptr %5, align 8, !tbaa !5
  %47 = load i64, ptr %2, align 8, !tbaa !5
  %48 = sub nsw i64 %46, %47
  store i64 %48, ptr %8, align 8, !tbaa !5
  %49 = load i64, ptr %8, align 8, !tbaa !5
  %50 = icmp sle i64 %49, 0
  br i1 %50, label %51, label %52

51:                                               ; preds = %45
  store i32 4, ptr %4, align 4
  br label %106

52:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #5
  store i8 0, ptr %9, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  %53 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %53, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #5
  %54 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %54, ptr %11, align 8, !tbaa !5
  br label %55

55:                                               ; preds = %90, %52
  %56 = load i64, ptr %5, align 8, !tbaa !5
  %57 = icmp sgt i64 %56, 0
  br i1 %57, label %61, label %58

58:                                               ; preds = %55
  %59 = load i64, ptr %8, align 8, !tbaa !5
  %60 = icmp sgt i64 %59, 0
  br label %61

61:                                               ; preds = %58, %55
  %62 = phi i1 [ true, %55 ], [ %60, %58 ]
  br i1 %62, label %63, label %95

63:                                               ; preds = %61
  %64 = load i64, ptr %5, align 8, !tbaa !5
  %65 = icmp eq i64 %64, 1
  br i1 %65, label %66, label %70

66:                                               ; preds = %63
  %67 = load i64, ptr %8, align 8, !tbaa !5
  %68 = icmp eq i64 %67, 1
  br i1 %68, label %69, label %70

69:                                               ; preds = %66
  br label %95

70:                                               ; preds = %66, %63
  %71 = load i64, ptr %5, align 8, !tbaa !5
  %72 = srem i64 %71, 3
  %73 = load i64, ptr %8, align 8, !tbaa !5
  %74 = srem i64 %73, 3
  %75 = icmp eq i64 %72, %74
  br i1 %75, label %76, label %81

76:                                               ; preds = %70
  %77 = load i64, ptr %8, align 8, !tbaa !5
  %78 = srem i64 %77, 3
  %79 = icmp sgt i64 %78, 0
  br i1 %79, label %80, label %81

80:                                               ; preds = %76
  store i8 1, ptr %9, align 1, !tbaa !11
  br label %95

81:                                               ; preds = %76, %70
  %82 = load i64, ptr %5, align 8, !tbaa !5
  %83 = srem i64 %82, 3
  %84 = icmp eq i64 %83, 2
  br i1 %84, label %89, label %85

85:                                               ; preds = %81
  %86 = load i64, ptr %8, align 8, !tbaa !5
  %87 = srem i64 %86, 3
  %88 = icmp eq i64 %87, 2
  br i1 %88, label %89, label %90

89:                                               ; preds = %85, %81
  store i8 1, ptr %9, align 1, !tbaa !11
  br label %95

90:                                               ; preds = %85
  %91 = load i64, ptr %5, align 8, !tbaa !5
  %92 = sdiv i64 %91, 3
  store i64 %92, ptr %5, align 8, !tbaa !5
  %93 = load i64, ptr %8, align 8, !tbaa !5
  %94 = sdiv i64 %93, 3
  store i64 %94, ptr %8, align 8, !tbaa !5
  br label %55, !llvm.loop !13

95:                                               ; preds = %89, %80, %69, %61
  %96 = load i8, ptr %9, align 1, !tbaa !11, !range !14, !noundef !15
  %97 = trunc i8 %96 to i1
  br i1 %97, label %98, label %99

98:                                               ; preds = %95
  store i32 4, ptr %4, align 4
  br label %105

99:                                               ; preds = %95
  %100 = load i64, ptr %10, align 8, !tbaa !5
  %101 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %100)
  %102 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %101, ptr noundef @.str)
  %103 = load i64, ptr %11, align 8, !tbaa !5
  %104 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) %102, i64 noundef %103)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %105

105:                                              ; preds = %99, %98
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #5
  br label %106

106:                                              ; preds = %105, %51
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  %107 = load i32, ptr %4, align 4
  switch i32 %107, label %111 [
    i32 4, label %108
  ]

108:                                              ; preds = %106
  %109 = load i64, ptr %3, align 8, !tbaa !5
  %110 = add nsw i64 %109, 1
  store i64 %110, ptr %3, align 8, !tbaa !5
  br label %13, !llvm.loop !16

111:                                              ; preds = %106, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  %112 = load i32, ptr %4, align 4
  switch i32 %112, label %115 [
    i32 2, label %113
  ]

113:                                              ; preds = %111
  %114 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef 0)
  store i32 0, ptr %4, align 4
  br label %115

115:                                              ; preds = %113, %111
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  %116 = load i32, ptr %4, align 4
  switch i32 %116, label %119 [
    i32 0, label %117
    i32 1, label %117
  ]

117:                                              ; preds = %115, %115
  %118 = load i32, ptr %1, align 4
  ret i32 %118

119:                                              ; preds = %115
  unreachable
}

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; 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) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #2 align 2

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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #4

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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" }
attributes #4 = { "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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = distinct !{!13, !10}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = distinct !{!16, !10}


; 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" }

@_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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  %2 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %3 = load i64, ptr %1, align 8, !tbaa !5
  br label %.preheader57

.preheader57:                                     ; preds = %0, %.loopexit
  %.03663 = phi i64 [ 1, %0 ], [ %29, %.loopexit ]
  br label %4

4:                                                ; preds = %.preheader57, %4
  %.03960 = phi i64 [ 0, %.preheader57 ], [ %.140, %4 ]
  %.04159 = phi i64 [ %.03663, %.preheader57 ], [ %10, %4 ]
  %.04258 = phi i64 [ 0, %.preheader57 ], [ %.143, %4 ]
  %5 = icmp eq i64 %.03960, 0
  %6 = and i64 %.04159, 1
  %7 = mul nsw i64 %.03960, 3
  %8 = trunc i64 %.04159 to i1
  %9 = select i1 %8, i64 %7, i64 0
  %.pn = select i1 %5, i64 %6, i64 %9
  %.140 = select i1 %5, i64 1, i64 %7
  %.143 = add nsw i64 %.pn, %.04258
  %10 = lshr i64 %.04159, 1
  %.not = icmp ult i64 %.04159, 2
  br i1 %.not, label %11, label %4, !llvm.loop !9

11:                                               ; preds = %4
  %12 = sub nsw i64 %.143, %3
  %13 = icmp slt i64 %12, 1
  br i1 %13, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %11, %25
  %.03862 = phi i64 [ %20, %25 ], [ %12, %11 ]
  %.24461 = phi i64 [ %18, %25 ], [ %.143, %11 ]
  %14 = icmp eq i64 %.24461, 1
  %15 = icmp eq i64 %.03862, 1
  %or.cond = select i1 %14, i1 %15, i1 false
  br i1 %or.cond, label %30, label %16

16:                                               ; preds = %.preheader
  %17 = srem i64 %.24461, 3
  %18 = sdiv i64 %.24461, 3
  %19 = urem i64 %.03862, 3
  %20 = udiv i64 %.03862, 3
  %21 = icmp ne i64 %17, %19
  %.not50 = icmp eq i64 %19, 0
  %or.cond51 = or i1 %21, %.not50
  br i1 %or.cond51, label %22, label %.loopexit

22:                                               ; preds = %16
  %23 = icmp eq i64 %17, 2
  %24 = icmp eq i64 %19, 2
  %or.cond52 = or i1 %23, %24
  br i1 %or.cond52, label %.loopexit, label %25

25:                                               ; preds = %22
  %26 = icmp sgt i64 %.24461, 2
  %27 = icmp ugt i64 %.03862, 2
  %28 = select i1 %26, i1 true, i1 %27
  br i1 %28, label %.preheader, label %30, !llvm.loop !11

.loopexit:                                        ; preds = %16, %22, %11
  %29 = add nuw nsw i64 %.03663, 1
  %exitcond = icmp eq i64 %29, 2097153
  br i1 %exitcond, label %.critedge54, label %.preheader57, !llvm.loop !12

30:                                               ; preds = %.preheader, %25
  %31 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.143)
  %32 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %31, ptr noundef nonnull @.str)
  %33 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) %32, i64 noundef %12)
  br label %35

.critedge54:                                      ; preds = %.loopexit
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef 0)
  br label %35

35:                                               ; preds = %30, %.critedge54
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i32 0
}

; 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 uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; 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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #2 align 2

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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #4

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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" }
attributes #4 = { "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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


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