target-i386: Add CC_OP_CLR
Special case xor with self. We need not even store the known
zero into cc_src.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
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Special case xor with self. We need not even store the known
zero into cc_src.
Signed-off-by: NRichard Henderson <rth@twiddle.net>