algorithm Struct Reference

#include <expmed.h>

Collaboration diagram for algorithm:

Data Fields
struct mult_cost	cost
short	ops
enum alg_code	op [MAX_BITS_PER_WORD]
char	log [MAX_BITS_PER_WORD]

Detailed Description

This structure records a sequence of operations.
`ops' is the number of operations recorded.
`cost' is their total cost.
The operations are stored in `op' and the corresponding
logarithms of the integer coefficients in `log'.

These are the operations:
alg_zero                total := 0;
alg_m           total := multiplicand;
alg_shift               total := total * coeff
alg_add_t_m2            total := total + multiplicand * coeff;
alg_sub_t_m2            total := total - multiplicand * coeff;
alg_add_factor  total := total * coeff + total;
alg_sub_factor  total := total * coeff - total;
alg_add_t2_m            total := total * coeff + multiplicand;
alg_sub_t2_m            total := total * coeff - multiplicand;

The first operand must be either alg_zero or alg_m.   

Field Documentation

cost

struct mult_cost algorithm::cost

Referenced by choose_mult_variant(), expand_expr_real_2(), expmed_mult_highpart(), mult_by_coeff_cost(), and synth_mult().

log

char algorithm::log[MAX_BITS_PER_WORD]

Referenced by expand_mult_const(), expand_vector_mult(), synth_mult(), and vect_synth_mult_by_constant().

op

enum alg_code algorithm::op[MAX_BITS_PER_WORD]

Referenced by expand_mult_const(), expand_vector_divmod(), expand_vector_mult(), expand_vector_operations_1(), extract_high_half(), get_compute_type(), optimize_vector_constructor(), synth_mult(), target_supports_mult_synth_alg(), target_supports_mult_synth_alg(), type_for_widest_vector_mode(), vect_determine_precisions_from_range(), and vect_synth_mult_by_constant().

ops

short algorithm::ops

Referenced by expand_expr_real_2(), expand_mult_const(), expand_vector_mult(), synth_mult(), target_supports_mult_synth_alg(), target_supports_mult_synth_alg(), vect_recog_sat_add_pattern(), vect_recog_sat_sub_pattern(), vect_recog_sat_sub_pattern_transform(), vect_recog_sat_trunc_pattern(), and vect_synth_mult_by_constant().

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The documentation for this struct was generated from the following file:

• expmed.h