tree 3a94b4bfe01067ec3a3e129b6a95ea99570dcf9f
parent ca8bbf4dfac19b3f4f7ce21a688b96a418c75031
author Ian Lance Taylor <iant@golang.org> 1492646771 -0700
committer Ian Lance Taylor <iant@golang.org> 1492731694 +0000

runtime: add prefetch functions

The Go 1.8 GC uses prefetch functions.  Add versions for gccgo that
call __builtin_prefetch.  Uncomment the test for them in testAtomic64.
Don't force the check function to return early, as now taking the
address of a local variable in the runtime package does not force it
onto the heap.

Change-Id: I48be1af93586a6c89a53b569217dcb6043466d66
Reviewed-on: https://go-review.googlesource.com/41144
Reviewed-by: Than McIntosh <thanm@google.com>