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* doc/md.texi (Standard Pattern Names): Document blockage pattern. 

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David Edelsohn 2007-01-28 19:26:43 +00:00 committed by David Edelsohn
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@ -1,3 +1,7 @@
2007-01-28 David Edelsohn <edelsohn@gnu.org>
* doc/md.texi (Standard Pattern Names): Document blockage pattern.
2007-01-28 Zdenek Dvorak <dvorakz@suse.cz>
* tree-ssa-loop-unswitch.c: Include tree-inline.h.

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@ -4704,6 +4704,13 @@ respectively, a low or moderate degree of temporal locality.
Targets that do not support write prefetches or locality hints can ignore
the values of operands 1 and 2.
@cindex @code{blockage} instruction pattern
@item @samp{blockage}
This pattern defines a pseudo insn that prevents the instruction
scheduler from moving instructions across the boundary defined by the
blockage insn. Normally an UNSPEC_VOLATILE pattern.
@cindex @code{memory_barrier} instruction pattern
@item @samp{memory_barrier}