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MIPS patch to correct move zero type attributes

Another item on my mips vector patch cleanup list.

The FP move patterns all have a m/fG alternative with type fpstore,
which is incorrect for m/G.  This patch make the obvious changes to fix
this, by splitting fG into two alternatives.

This was tested with an sb1-elf cross compiler from a combined tree
build, C and C++ only, and a make check.  There were no regressions. 
There were 36 fewer libstdc++ failures, but I suspect that is due to one
of my other bug fixes made since the last time I ran the sb1-elf
testsuite, perhaps my tree-ssa-alias.c patch.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com

Attachment: patch.mov.zero
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