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[Bug tree-optimization/28029] [4.1 Regression] wrong optimization with -ftree-vectorize



------- Comment #8 from dberlin at gcc dot gnu dot org  2006-07-22 13:30 -------
Subject: Re:  [4.1 Regression] wrong optimization
 with -ftree-vectorize

rguenth at gcc dot gnu dot org wrote:
> ------- Comment #5 from rguenth at gcc dot gnu dot org  2006-07-21 10:41 -------
> On the mainline we produce
> 
> Variable: D.1848, UID 1848, float *, symbol memory tag: SMT.4
> Variable: D.1851, UID 1851, const float *, symbol memory tag: SMT.4
> 
> while 4.1 branch does
> 
> Variable: D.1604, UID 1604, float *, type memory tag: TMT.5
> Variable: D.1607, UID 1607, const float *, type memory tag: TMT.6
> 
> anyones bell ringing?

Well, the symbol difference was likely caused by the TYPE_READONLY
comparison that ensured that readonly types got their own SMT.
However, doing *that* was simply wrong, even though it worked the
majority of the time :).

Oh, i see you figured that out :)


> 
> 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28029


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