[Bug tree-optimization/46928] data dependence analysis fails on constant array accesses

[xinliangli at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46928

davidxl <xinliangli at gmail dot com> changed:

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--- Comment #2 from davidxl <xinliangli at gmail dot com> 2010-12-13 18:38:40 UTC ---
Is memset guaranteed to be asynchronous safe? Otherwise such transformation is
not legal in signal handle code.

Icc does not covert it to memset, but unrolls differently -- this is where the
tuing in gcc should be done as well.

David