diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 41 |
1 files changed, 20 insertions, 21 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index 514ba406ab0..9cc048b85f0 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -720,10 +720,25 @@ approx_reg_cost_1 (xp, data) void *data; { rtx x = *xp; - regset set = (regset) data; + int *cost_p = data; if (x && GET_CODE (x) == REG) - SET_REGNO_REG_SET (set, REGNO (x)); + { + unsigned int regno = REGNO (x); + + if (! CHEAP_REGNO (regno)) + { + if (regno < FIRST_PSEUDO_REGISTER) + { + if (SMALL_REGISTER_CLASSES) + return 1; + *cost_p += 2; + } + else + *cost_p += 1; + } + } + return 0; } @@ -736,28 +751,12 @@ static int approx_reg_cost (x) rtx x; { - regset_head set; - int i; int cost = 0; - int hardregs = 0; - - INIT_REG_SET (&set); - for_each_rtx (&x, approx_reg_cost_1, (void *) &set); - - EXECUTE_IF_SET_IN_REG_SET - (&set, 0, i, - { - if (! CHEAP_REGNO (i)) - { - if (i < FIRST_PSEUDO_REGISTER) - hardregs++; - cost += i < FIRST_PSEUDO_REGISTER ? 2 : 1; - } - }); + if (for_each_rtx (&x, approx_reg_cost_1, (void *) &cost)) + return MAX_COST; - CLEAR_REG_SET (&set); - return hardregs && SMALL_REGISTER_CLASSES ? MAX_COST : cost; + return cost; } /* Return a negative value if an rtx A, whose costs are given by COST_A |