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ira-cost.c (copy_cost): Lazilly initialize move_cost if needed.

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* ira-cost.c (copy_cost): Lazilly initialize move_cost if needed.

Co-Authored-By: Kai Tietz <kai.tietz@onevision.com>

From-SVN: r142811
This commit is contained in:
Jan Hubicka 2008-12-18 14:49:47 +01:00 • committed by Jan Hubicka
parent 877a0b76e1
commit 20377b474e
2 changed files with 16 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2008-12-18 Jan Hubicka <jh@suse.cz>
Kai Tietz <kai.tietz@onevision.com>
* ira-cost.c (copy_cost): Lazilly initialize move_cost if needed.
2008-12-18 Jan Hubicka <jh@suse.cz>
Kai Tietz <kai.tietz@onevision.com>

15
gcc/ira-costs.c
View file

@ -142,8 +142,12 @@ copy_cost (rtx x, enum machine_mode mode, enum reg_class rclass, bool to_p,
ira_init_register_move_cost (mode);
if (secondary_class != NO_REGS)
return (move_cost[mode][secondary_class][rclass] + sri.extra_cost
+ copy_cost (x, mode, secondary_class, to_p, &sri));
{
if (!move_cost[mode])
init_move_cost (mode);
return (move_cost[mode][secondary_class][rclass] + sri.extra_cost
+ copy_cost (x, mode, secondary_class, to_p, &sri));
}
/* For memory, use the memory move cost, for (hard) registers, use
the cost to move between the register classes, and use 2 for
@ -151,8 +155,11 @@ copy_cost (rtx x, enum machine_mode mode, enum reg_class rclass, bool to_p,
if (MEM_P (x) || rclass == NO_REGS)
return sri.extra_cost + ira_memory_move_cost[mode][rclass][to_p != 0];
else if (REG_P (x))
return
(sri.extra_cost + move_cost[mode][REGNO_REG_CLASS (REGNO (x))][rclass]);
{
if (!move_cost[mode])
init_move_cost (mode);
return (sri.extra_cost + move_cost[mode][REGNO_REG_CLASS (REGNO (x))][rclass]);
}
else
/* If this is a constant, we may eventually want to call rtx_cost
here. */