Aurelien Jarno 085bb5bb64 tcg/i386: use movbe instruction in qemu_ldst routines ... The movbe instruction has been added on some Intel Atom CPUs and on recent Intel Haswell CPUs. It allows to load/store a value and at the same time bswap it. This patch detects the avaibility of this instruction and when available use it in the qemu load/store routines in replacement of load/store + bswap. Note that for 16-bit unsigned loads, movbe + movzw is basically the same as movzw + bswap, so the patch doesn't touch this case. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> [RTH: Reduced the number of conditionals using "movop".] Signed-off-by: Richard Henderson <rth@twiddle.net>		2014-01-25 15:19:19 -08:00
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tcg-target.c	tcg/i386: use movbe instruction in qemu_ldst routines	2014-01-25 15:19:19 -08:00
tcg-target.h	tcg-i386: Support new ldst opcodes	2013-10-12 16:19:19 -07:00