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Subject: [Bug ada/53590] compiler fails to generate SIMD instruction for FP division
Date: Tue, 12 Jun 2012 16:54:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53590

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|2012-06-11 00:00:00         |2012-06-12
         AssignedTo|unassigned at gcc dot       |ebotcazou at gcc dot
                   |gnu.org                     |gnu.org
     Ever Confirmed|0                           |1

--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-06-12 16:54:36 UTC ---
> That wasn't particularly clear; the C compiler and the C++ compiler
> used for comparing things on the machine are form the very
> same build (4.8.0 20120525), though.

Yes, it's a fallout of -fnon-call-exceptions that stems from the Java
semantics.  GNAT GPL doesn't care about Java so it implements more aggressive
dead code elimination passes.  We could add an internal flag enabling this
behavior.