[libstdc++] dg-require-atomic-builtins on ARM

[Andreas Schwab]

Sebastian Huber <sebastian.huber@embedded-brains.de> writes:

> Thanks for this hint. Do you know the magic to use more than one machine
> option, e.g. -march=armv7-a -mthumb?

RUNTESTFLAGS=--target_board=unix\{,-march=armv7-a/-mthumb\}

Andreas.

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Andreas Schwab, SUSE Labs, schwab@suse.de
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