RE: [PATCH v4 47/51] tcg/optimize: Optimize sign extensions

[Luis Fernando Fujita Pires]

From: Richard Henderson <richard.henderson@linaro.org>
> Certain targets, like riscv, produce signed 32-bit results.
> This can lead to lots of redundant extensions as values are manipulated.
> 
> Begin by tracking only the obvious sign-extensions, and converting them to
> simple copies when possible.
> 
> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  tcg/optimize.c | 123 ++++++++++++++++++++++++++++++++++++++++---------
>  1 file changed, 102 insertions(+), 21 deletions(-)

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>

--
Luis Pires
Instituto de Pesquisas ELDORADO
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