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 * The Initial Developer of the Original Code is
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 *   Nicholas Nethercote <nnethercote@mozilla.com>
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/* LIns classes, as required for --random mode.  Includers must define a CLASS
 * macro of the following form:
 *
 * #define CLASS(name, only64bit, relFreq)     ...
 *
 * Selected arguments can be used within the macro expansions.
 *
 * Field        Description
 * -----        -----------
 * name         Name of the instruction class.  The types are B (boolean), I
 *              (32-bit integer), Q (64-bit integer), F (64-bit float), N
 *              (null).  A name of the form LOP_Z_XY means that it takes
 *              arguments of type X and Y and produces a result of type Z.
 *
 * only64bit    1 if the instruction class is only used on 64-bit platforms, 0
 *              otherwise.
 *
 * relFreq      We weight each class differently, so that some classes are more
 *              common than others.  This field gives the relative frequency of
 *              the instruction class.  All the relFreqs together can sum up to
 *              any number, but it's easier to think about if the sum is a
 *              round number.  (That's why the relFreqs add up to 100%;  the
 *              running total is shown in comments.)  The sum also shouldn't be
 *              too big, as we generate a table with that many elements in it.
 *
 *              Note that we want a decent number of value sinks (eg.
 *              stores, calls, guards) and not too many value sources (eg.
 *              immediates, loads) so that the amount of dead code generated is
 *              reasonable.
 */

CLASS(  LFENCE,         0,  1)  //  1%  LIR_regfence, LIR_xbarrier

CLASS(  LIMM_I,         0,  4)  //  5%  LIR_imm
CLASS(  LIMM_Q,         1,  3)  //  8%  LIR_quad
CLASS(  LIMM_F,         0,  4)  // 12%  LIR_float

CLASS(  LOP_I_I,        0,  2)  // 14%  LIR_neg, LIR_not
CLASS(  LOP_Q_Q,        1,  0)  // 14%  (none)
CLASS(  LOP_F_F,        0,  2)  // 16%  LIR_fneg

CLASS(  LOP_I_II,       0, 16)  // 32%  LIR_add, LIR_and, LIR_eq, etc.
CLASS(  LOP_Q_QQ,       1,  9)  // 41%  LIR_qiadd, LIR_qiand, LIR_qeq, etc.
CLASS(  LOP_F_FF,       0, 10)  // 51%  LIR_fadd, etc.

// cmov has a low weight because is also used with LIR_div/LIR_mod.
CLASS(  LOP_I_BII,      0,  1)  // 52%  LIR_cmov
CLASS(  LOP_Q_BQQ,      1,  2)  // 54%  LIR_qcmov

CLASS(  LOP_B_II,       0,  3)  // 57%  LIR_eq,  LIR_lt,  etc
CLASS(  LOP_B_QQ,       1,  3)  // 60%  LIR_qeq, LIR_qlt, etc
CLASS(  LOP_B_FF,       0,  3)  // 63%  LIR_feq, LIR_flt, etc

CLASS(  LOP_Q_I,        1,  2)  // 65%  LIR_i2q, LIR_u2q
CLASS(  LOP_F_I,        0,  2)  // 67%  LIR_i2f, LIR_u2f

CLASS(  LOP_I_F,        0,  2)  // 69%  LIR_qlo, LIR_qhi
CLASS(  LOP_F_II,       0,  1)  // 70%  LIR_qjoin

    // XXX: "QorF" because the same opcode is used for both 64-bit int and
    // 64-bit float loads.  Ditto for stores.  That should be fixed, see
    // bug 520714. 
CLASS(  LLD_I,          0,  4)  // 74%  LIR_ld
CLASS(  LLD_QorF,       0,  4)  // 78%  LIR_ldq

CLASS(  LST_I,          0,  7)  // 85%  LIR_sti
CLASS(  LST_QorF,       0,  7)  // 92%  LIR_stqi

CLASS(  LCALL_I_I1,     0,  1)  // 93%  LIR_icall
CLASS(  LCALL_I_I6,     0,  1)  // 94%  LIR_icall
CLASS(  LCALL_Q_Q2,     1,  1)  // 95%  LIR_qcall
CLASS(  LCALL_Q_Q7,     1,  1)  // 96%  LIR_qcall
CLASS(  LCALL_F_F3,     0,  1)  // 97%  LIR_fcall
CLASS(  LCALL_F_F8,     0,  1)  // 98%  LIR_fcall
CLASS(  LCALL_N_IQF,    1,  1)  // 99%  LIR_icall or LIR_qcall

CLASS(  LLABEL,         0,  1)  //100%  LIR_label