Feature #15721 ยป optimize-comparable-condition.patch
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#endif
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}
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static inline int
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special_const_comparability(VALUE obj)
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{
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switch (TYPE(obj)) {
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case T_FIXNUM:
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return (EQ_UNREDEFINED_P(INTEGER) != 0) * 2 - 1;
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case T_FLOAT:
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return (EQ_UNREDEFINED_P(FLOAT) != 0) * 2 - 1;
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case T_SYMBOL:
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return (EQ_UNREDEFINED_P(SYMBOL) != 0) * 2 - 1;
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case T_NIL:
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return (EQ_UNREDEFINED_P(NIL) != 0) * 2 - 1;
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case T_TRUE:
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return (EQ_UNREDEFINED_P(TRUE) != 0) * 2 - 1;
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case T_FALSE:
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return (EQ_UNREDEFINED_P(FALSE) != 0) * 2 - 1;
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default:
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UNREACHABLE_RETURN(0);
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}
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}
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/* 1: compare by identity, 0: not applicable, -1: redefined */
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static inline int
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comparable_by_identity(VALUE recv, VALUE obj)
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| ... | ... | |
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if (SYMBOL_P(recv) && SYMBOL_P(obj)) {
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return (EQ_UNREDEFINED_P(SYMBOL) != 0) * 2 - 1;
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}
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if ((FIXNUM_P(recv) && FLONUM_P(obj)) ||
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(FLONUM_P(recv) && FIXNUM_P(obj))) {
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return 0; // numerical conversion costs
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}
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if (SPECIAL_CONST_P(recv) && SPECIAL_CONST_P(obj)) {
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int recv_comparability = special_const_comparability(recv);
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int obj_comparability = special_const_comparability(obj);
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return MIN(recv_comparability, obj_comparability);
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}
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return 0;
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}
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