Re: [gc-improv] Permanent vs function RTL obstack fix

[Jeff Law <law@redhat.com>]

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On 04/08/11 07:21, Laurynas Biveinis wrote:
> 2011/4/8 Steven Bosscher <stevenb.gcc@gmail.com>:
>>>        * stmt.c (label_rtx): Allocate RTX in permanent RTL memory.
>>
>> That looks strange, labels should be function specific, except
>> non-local labels. Maybe you can get away with allocating DECL_NONLOCAL
>> labels on the permanent rtl obstack?
> 
> That's a good idea, I will try it once things are stable on the branch.
> 
>> Perhaps a third, per-translation-unit obstack is necessary?
> 
> Perhaps. After I finish with permanent rtl obstack, I will measure how
> large it gets and if it's worthwhile to split out
> per-translation-obstack out of it.
And then you'll want a per-statement obstack, then per-expression
obstack, and before you know it, GCC looks much like it did 20 years ago.

Sigh.

jeff
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