On Thu, Jan 14, 2010 at 08:05:58AM -0800, Richard Henderson wrote:
> On 01/14/2010 07:57 AM, Aurelien Jarno wrote:
> >On Tue, Jan 05, 2010 at 04:03:00PM -0800, Richard Henderson wrote:
> >>This avoids an unnecessary REX.W prefix when dealing with AND
> >>operands that fit into a 32-bit quantity. T
On 01/14/2010 07:57 AM, Aurelien Jarno wrote:
On Tue, Jan 05, 2010 at 04:03:00PM -0800, Richard Henderson wrote:
This avoids an unnecessary REX.W prefix when dealing with AND
operands that fit into a 32-bit quantity. The most common change
actually seen is movz[wb]q -> movz[wb]l.
Similarly, a
On Tue, Jan 05, 2010 at 04:03:00PM -0800, Richard Henderson wrote:
> This avoids an unnecessary REX.W prefix when dealing with AND
> operands that fit into a 32-bit quantity. The most common change
> actually seen is movz[wb]q -> movz[wb]l.
>
> Similarly, avoid REXW in ext{8,16}u_i64 tcg opcodes.
This avoids an unnecessary REX.W prefix when dealing with AND
operands that fit into a 32-bit quantity. The most common change
actually seen is movz[wb]q -> movz[wb]l.
Similarly, avoid REXW in ext{8,16}u_i64 tcg opcodes.
Signed-off-by: Richard Henderson
---
tcg/x86_64/tcg-target.c | 26 +
