Catherine Ho 7400d6938c tcg: add early clober modifier in atomic16_cmpxchg on aarch64
Without this patch, gcc might up the Input/Output registers and
cause unpredictable error.

Fixes: 1ec182c33379 ("target/arm: Convert to HAVE_CMPXCHG128")

Signed-off-by: Catherine Ho <catherine.hecx@gmail.com>
Message-Id: <1548838794-23757-1-git-send-email-catherine.hecx@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-02-06 03:38:39 +00:00
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