diff options
Diffstat (limited to 'gcc/expmed.h')
| -rw-r--r-- | gcc/expmed.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/expmed.h b/gcc/expmed.h index 37f57557120..ea141bc2629 100644 --- a/gcc/expmed.h +++ b/gcc/expmed.h @@ -124,6 +124,8 @@ struct alg_hash_entry { #define NUM_ALG_HASH_ENTRIES 307 #endif +#define NUM_MODE_INT (MAX_MODE_INT - MIN_MODE_INT + 1) + /* Target-dependent globals. */ struct target_expmed { /* Each entry of ALG_HASH caches alg_code for some integer. This is @@ -155,6 +157,11 @@ struct target_expmed { int x_udiv_cost[2][NUM_MACHINE_MODES]; int x_mul_widen_cost[2][NUM_MACHINE_MODES]; int x_mul_highpart_cost[2][NUM_MACHINE_MODES]; + + /* Conversion costs are only defined between two scalar integer modes + of different sizes. The first machine mode is the destination mode, + and the second is the source mode. */ + int x_convert_cost[2][NUM_MODE_INT][NUM_MODE_INT]; }; extern struct target_expmed default_target_expmed; @@ -197,4 +204,43 @@ extern struct target_expmed *this_target_expmed; #define mul_highpart_cost \ (this_target_expmed->x_mul_highpart_cost) +/* Set the COST for converting from FROM_MODE to TO_MODE when optimizing + for SPEED. */ + +static inline void +set_convert_cost (enum machine_mode to_mode, enum machine_mode from_mode, + bool speed, int cost) +{ + int to_idx, from_idx; + + gcc_assert (to_mode >= MIN_MODE_INT + && to_mode <= MAX_MODE_INT + && from_mode >= MIN_MODE_INT + && from_mode <= MAX_MODE_INT); + + to_idx = to_mode - MIN_MODE_INT; + from_idx = from_mode - MIN_MODE_INT; + this_target_expmed->x_convert_cost[speed][to_idx][from_idx] = cost; +} + +/* Return the cost for converting from FROM_MODE to TO_MODE when optimizing + for SPEED. */ + +static inline int +convert_cost (enum machine_mode to_mode, enum machine_mode from_mode, + bool speed) +{ + int to_idx, from_idx; + + gcc_assert (to_mode >= MIN_MODE_INT + && to_mode <= MAX_MODE_INT + && from_mode >= MIN_MODE_INT + && from_mode <= MAX_MODE_INT); + + to_idx = to_mode - MIN_MODE_INT; + from_idx = from_mode - MIN_MODE_INT; + return this_target_expmed->x_convert_cost[speed][to_idx][from_idx]; +} + +extern int mult_by_coeff_cost (HOST_WIDE_INT, enum machine_mode, bool); #endif |