> Yes, I've just verified that. Do you have access to the SPEC benchmark?

Nope.

> First big change is in before/exchange2.fppized.f90.130t.pre

Is that at -Os?  If not, then this isn't necessarily a problem.  It looks like 
PRE is able to PRE-ify more stores, very likely because they no longer trap.

-- 
Eric Botcazou

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