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Fixes i386 xchgq test 

As "xchg" reads and writes both operands, the "+m" is required to avoid
undefined behavior on -O2 compilation.

Signed-off-by: Fabrice Desclaux <fabrice.desclaux@cea.fr>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <03506cf0-a204-f619-8ee4-4990a5e69af5@cea.fr>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
fabrice.desclaux@cea.fr 2018-12-07 15:44:40 +01:00 committed by Laurent Vivier
parent d668c82bfb
commit 82c48fb79d
1 changed files with 1 additions and 1 deletions
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2
tests/tcg/i386/test-i386.c
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@ -1137,7 +1137,7 @@ void test_xchg(void)
TEST_XCHG(xchgb, "b", "+q");
#if defined(__x86_64__)
TEST_XCHG(xchgq, "", "=m");
TEST_XCHG(xchgq, "", "+m");
#endif
TEST_XCHG(xchgl, "k", "+m");
TEST_XCHG(xchgw, "w", "+m");