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Re: RFC: VTA alias set discrepancy
On Wed, Mar 17, 2010 at 09:26:29PM +0100, Jakub Jelinek wrote:
> That will very much pessimize debug info. While we are now always in
> -funit-at-a-time mode, that doesn't mean DECL_RTL is computed early enough.
> From the file scope non-static vars, at the point debug info is generated only
> the first var usually has DECL_RTL set, all others don't.
...
And for the dwarf2out.c hunk please see
http://gcc.gnu.org/ml/gcc-patches/2009-11/msg00546.html
In both spots this happens only for TREE_STATIC && !DECL_EXTERNAL
variables, and the debug info really doesn't care if the alias set will be 0
on all of those MEMs. Though of course it could use the decl's alias set
if it has been computed already, and 0 otherwise.
Jakub