K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2020-10-18T17:31:10.937943Z
K 7
svn:log
V 499
[libcxx] Fix atomic type for mips32 on gcc to work w/out needing libatomic

When compiling this for mips32 on gcc-6.x, we'd hit issues where we
don't have 64 bit atomics on mips32.

gcc implements this using libatomic, which we don't currently include
in our freebsd-gcc compiler packages.

So for now add this work around so mips32 works.  It's also fine for
mips64.  We can fix this later once we get libatomic included.

Approved by:	dim
Differential Revision:	https://reviews.freebsd.org/D26774

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