GCC modified for the FreeChainXenon project
262767053e
* expmed.c (enum alg_code): Remove long unused enumeration values.
(struct mult_cost): New structure to hold the "score" of a synthetic
multiply sequence, including both a rtx_cost and a latency field.
(MULT_COST_LESS): New macro to compare mult_cost to a constant.
(CHEAPER_MULT_COST): New macro to compare two mult_costs.
(struct algorithm): Change type of cost field to be mult_cost.
(synth_mult): Change type of cost_limit argument to be a
pointer to a mult_cost. Update all cost comparisons to use the
new mult_cost infrastructure. For alg_add_factor and
alg_sub_factor operations, latency is lower than the rtx_cost.
(choose_mult_variant): Update calls to synth_mult. Perform
cost comparisons using the new mult_cost infrastructure.
(expand_mult_highpart): Use alg.cost.cost instead of alg.cost
to optain the total rtx_cost of a synth_mult "algorithm".
From-SVN: r86954
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