Richard Henderson 09aac1266e tcg/x86_64: Avoid unnecessary REX.B prefixes. ... The existing P_REXB internal opcode flag unconditionally emits the REX prefix. Technically it's not needed if the register in question is %al, %bl, %cl, %dl. Eliding the prefix requires splitting the P_REXB flag into two, in order to indicate whether the byte register in question is in the REG or the R/M field. Within TCG, the byte register is in the REG field only for stores. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>		2010-01-15 07:32:56 +01:00
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tcg-target.c	tcg/x86_64: Avoid unnecessary REX.B prefixes.	2010-01-15 07:32:56 +01:00
tcg-target.h	tcg/x86_64: add support for ext{8,16,32}u_i{32,64} TCG ops	2009-10-04 13:24:45 +02:00