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1 module dmd.UshrExp;
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2
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3 import dmd.Expression;
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4 import dmd.Identifier;
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5 import dmd.InterState;
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6 import dmd.Loc;
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7 import dmd.Scope;
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8 import dmd.Id;
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9 import dmd.IntRange;
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10 import dmd.IRState;
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11 import dmd.BinExp;
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12 import dmd.TOK;
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13 import dmd.Type;
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14
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15 import dmd.backend.elem;
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16 import dmd.backend.OPER;
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17 import dmd.backend.TYFL;
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18 import dmd.backend.Util;
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19 import dmd.expression.Util;
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20 import dmd.expression.Ushr;
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21 import dmd.expression.shift_optimize;
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22
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23 class UshrExp : BinExp
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24 {
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25 this(Loc loc, Expression e1, Expression e2)
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26 {
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27 super(loc, TOK.TOKushr, UshrExp.sizeof, e1, e2);
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28 }
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29
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30 Expression semantic(Scope sc)
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31 {
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32 Expression e;
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33
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34 if (!type)
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35 {
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36 BinExp.semanticp(sc);
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37 e = op_overload(sc);
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38 if (e)
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39 return e;
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40 e1 = e1.checkIntegral();
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41 e2 = e2.checkIntegral();
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42 e1 = e1.integralPromotions(sc);
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43 e2 = e2.castTo(sc, Type.tshiftcnt);
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44 type = e1.type;
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45 }
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46 return this;
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47 }
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48
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49 Expression optimize(int result)
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50 {
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51 //printf("UshrExp.optimize(result = %d) %s\n", result, toChars());
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52 return shift_optimize(result, this, &Ushr);
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53 }
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54
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55 Expression interpret(InterState* istate)
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56 {
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57 assert(false);
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58 }
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59
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60 IntRange getIntRange()
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61 {
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62 assert(false);
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63 }
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64
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65 Identifier opId()
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66 {
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67 return Id.ushr;
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68 }
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69
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70 Identifier opId_r()
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71 {
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72 return Id.ushr_r;
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73 }
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74
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75 elem* toElem(IRState* irs)
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76 {
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77 elem *eleft = e1.toElem(irs);
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78 eleft.Ety = touns(eleft.Ety);
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79 elem *eright = e2.toElem(irs);
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80 elem *e = el_bin(OPshr, type.totym(), eleft, eright);
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81 el_setLoc(e, loc);
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82 return e;
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83 }
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84 }
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85
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