REP prefixes have a high startup cost. Most were eliminated with CL 81370046. For
overlapping source/destinations when we have to copy in descending address order, they
are still used. Fix that.
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rsc
changed the title
cmd/6g, cmd/8g: don't use REP prefix for reverse-order copying
cmd/compile: don't use REP prefix for reverse-order copying on amd64, 386
Jun 8, 2015
The text was updated successfully, but these errors were encountered: