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Re: Reduce alloca 'ted memory in dwarf2out.c
- From: Marcin Dalecki <martin at dalecki dot de>
- To: Daniel Jacobowitz <drow at false dot org>
- Cc: gcc-patches at gcc dot gnu dot org,Christophe Jaillet <christophe dot jaillet at wanadoo dot fr>
- Date: Mon, 14 Feb 2005 01:53:23 +0100
- Subject: Re: Reduce alloca 'ted memory in dwarf2out.c
- References: <00ac01c51224$cf65b900$96cefea9@none> <20050213234042.GA22407@nevyn.them.org>
On 2005-02-14, at 00:40, Daniel Jacobowitz wrote:
On Mon, Feb 14, 2005 at 12:36:15AM +0100, Christophe Jaillet wrote:
Description : in gcc/dwarf2out.c, some memory allocated with alloca
request
too much. Just ask for what is needed
Note : the first part of the patch assume that %x of
comdat_symbol_number is
less than 10 bytes
The second part is always OK.
What benefit does this have? It's on the stack and not long-lived...
Stacks are surprisingly small those days to reduce virtual memory
scatter/pressure.
Watch the apple branch playing rlimit games in toplevel.c due to this.
The less is used
the better.