tree 571f3695676d2c636d786f43731584baacac0851
parent b3ee719e6499987a635332d012f08dc80cd277e0
author Richard Henderson <richard.henderson@linaro.org> 1710289707 -1000
committer Richard Henderson <richard.henderson@linaro.org> 1715025350 -0700

tcg/i386: Simplify immediate 8-bit logical vector shifts

The x86 isa does not have this operation, so we need an expansion.
Use the same algorithm that we use for expanding this vector
operation with integers: perform the shift with a wider type
and then mask the bits that must be zero.

This reduces the instruction count from 5 to 2.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>