From: Jean-Francois Romang <jromang@posteo.de>
Date: Mon, 14 Apr 2014 05:10:39 +0000 (+0200)
Subject: Enable BMI1 too when using BMI2 ARCH
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=9073866491ebade21f748e2f824c37a3398e01a6;hp=9073866491ebade21f748e2f824c37a3398e01a6;p=stockfish

Enable BMI1 too when using BMI2 ARCH

Adding BMI1 allows the compiler to use _blsr_u64
automatically (the advertised 0.3% speed gain).
I verified that the compiler does not use this
instruction with the -mbmi2 flag only. Also, all
processors supporting BMI2 is also supporting BMI1.

No functional change
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