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Re: Question about mem_set_list in propagate_block_info
Diego Novillo wrote:
On Wed, 2003-06-04 at 14:46, Toon Moene wrote:
Richard Henderson wrote:
On Wed, Jun 04, 2003 at 12:25:05AM -0400, Diego Novillo wrote:
Wait, that doesn't follow. You can have different alias set numbers
that are conflicting.
Oh, yes, so you can.
I still bet his source is wrong.
Huh ? What am I missing ? What's the use of alias sets, then ?
Alias sets are organized in a tree hierarchy (see the comments at the
start of alias.c).
:-) This is soooo funny. Of course I wouldn't have thought of looking
into alias.c for an explanation, as to me that file was home of John
Carr's implementation of alias analysis, which I defended in vain on the
old gcc mailing list (before the egcs fork).
I'm thinking of a line from Tracy Kidder's "The soul of a new machine":
Hire graduates fresh from school - they don't know yet what's impossible.
Cheers,
--
Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
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