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annotate dmd/UshrExp.d @ 178:e3afd1303184

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Many small bugs fixed Made all classes derive from TObject to detect memory leaks (functionality is disabled for now) Began work on overriding backend memory allocations (to avoid memory leaks)
author korDen
date Sun, 17 Oct 2010 07:42:00 +0400
parents af1bebfd96a4
children b0d41ff5e0df
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1 module dmd.UshrExp;
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2
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3 import dmd.common;
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4 import dmd.Expression;
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5 import dmd.Identifier;
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6 import dmd.InterState;
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7 import dmd.Loc;
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8 import dmd.Scope;
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9 import dmd.Id;
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10 import dmd.IntRange;
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11 import dmd.IRState;
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12 import dmd.BinExp;
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13 import dmd.TOK;
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14 import dmd.Type;
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15
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16 import dmd.backend.elem;
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17 import dmd.backend.OPER;
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18 import dmd.backend.TYFL;
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19 import dmd.backend.Util;
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20 import dmd.expression.Util;
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21 import dmd.expression.Ushr;
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22 import dmd.expression.shift_optimize;
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23
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24 class UshrExp : BinExp
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25 {
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26 this(Loc loc, Expression e1, Expression e2)
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27 {
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28 register();
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29 super(loc, TOK.TOKushr, UshrExp.sizeof, e1, e2);
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30 }
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32 override Expression semantic(Scope sc)
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33 {
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34 Expression e;
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35
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36 if (!type)
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37 {
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38 BinExp.semanticp(sc);
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39 e = op_overload(sc);
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40 if (e)
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41 return e;
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42 e1 = e1.checkIntegral();
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43 e2 = e2.checkIntegral();
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44 e1 = e1.integralPromotions(sc);
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45 e2 = e2.castTo(sc, Type.tshiftcnt);
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46 type = e1.type;
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47 }
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48 return this;
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49 }
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50
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51 override Expression optimize(int result)
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52 {
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53 //printf("UshrExp.optimize(result = %d) %s\n", result, toChars());
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54 return shift_optimize(result, this, &Ushr);
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55 }
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56
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57 override Expression interpret(InterState istate)
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58 {
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59 return interpretCommon(istate, &Ushr);
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60 }
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62 override IntRange getIntRange()
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63 {
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64 assert(false);
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65 }
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66
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67 override Identifier opId()
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68 {
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69 return Id.ushr;
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70 }
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72 override Identifier opId_r()
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73 {
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74 return Id.ushr_r;
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75 }
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77 override elem* toElem(IRState* irs)
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78 {
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79 //return toElemBin(irs, OPER.OPshr);
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80 elem *eleft = e1.toElem(irs);
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81 eleft.Ety = touns(eleft.Ety);
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82 elem *eright = e2.toElem(irs);
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83 elem *e = el_bin(OPER.OPshr, type.totym(), eleft, eright);
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84 el_setLoc(e, loc);
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85 return e;
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86 }
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87 }