diff options
Diffstat (limited to 'gcc/cselib.c')
| -rw-r--r-- | gcc/cselib.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/cselib.c b/gcc/cselib.c index 87cc3f4b8b4..de13ebef93d 100644 --- a/gcc/cselib.c +++ b/gcc/cselib.c @@ -130,7 +130,7 @@ static cselib_val dummy_val; May or may not contain the useless values - the list is compacted each time memory is invalidated. */ static cselib_val *first_containing_mem = &dummy_val; -static alloc_pool elt_loc_list_pool, elt_list_pool, cselib_val_pool; +static alloc_pool elt_loc_list_pool, elt_list_pool, cselib_val_pool, value_pool; /* Allocate a struct elt_list and fill in its two elements with the @@ -694,7 +694,12 @@ new_cselib_val (unsigned int value, enum machine_mode mode) #endif e->value = value; - e->u.val_rtx = gen_rtx_VALUE (mode); + /* We use custom method to allocate this RTL construct because it accounts + about 8% of overall memory usage. */ + e->u.val_rtx = pool_alloc (value_pool); + memset (e->u.val_rtx, 0, RTX_HDR_SIZE); + PUT_CODE (e->u.val_rtx, VALUE); + PUT_MODE (e->u.val_rtx, mode); CSELIB_VAL_PTR (e->u.val_rtx) = e; e->addr_list = 0; e->locs = 0; @@ -1392,6 +1397,8 @@ cselib_init (void) sizeof (struct elt_loc_list), 10); cselib_val_pool = create_alloc_pool ("cselib_val_list", sizeof (cselib_val), 10); + value_pool = create_alloc_pool ("value", + RTX_SIZE (VALUE), 100); /* This is only created once. */ if (! callmem) callmem = gen_rtx_MEM (BLKmode, const0_rtx); @@ -1420,6 +1427,7 @@ cselib_finish (void) free_alloc_pool (elt_list_pool); free_alloc_pool (elt_loc_list_pool); free_alloc_pool (cselib_val_pool); + free_alloc_pool (value_pool); clear_table (); reg_values_old = reg_values; reg_values = 0; |
