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Re: [autovect] [patch] Improve generated vector comparisons

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>, VICTORK at il dot ibm dot com
Date: Tue, 23 May 2006 13:30:58 +0200
Subject: Re: [autovect] [patch] Improve generated vector comparisons
References: <200605222102.k4ML2F729508@makai.watson.ibm.com> <OF19071A74.4D3AAF07-ONC2257177.00312F8C-C2257177.0033ECF3@il.ibm.com>

As Richard said, the better way is to perform this transformation at expand
time.
I'll try to propose a new patch. It looks nontrivial to me, since this
transformation requires
swapping of "then" and "else" clauses in all uses of condition. Where can I
look in order to study
how this kind of transformation is done.

You have to look in dojump.c; I think there are similar transformations being done there.

Paolo

References:
- Re: [autovect] [patch] Improve generated vector comparisons
  - From: David Edelsohn
- Re: [autovect] [patch] Improve generated vector comparisons
  - From: Victor Kaplansky

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