On 5/13/21 5:00 AM, Alex Bennée wrote:
Richard Henderson <richard.hender...@linaro.org> writes:
Use compiler support for carry arithmetic.
Didn't we have a series that attempted to take advantage of compiler
support for Int128? Is the compiler end up smart enough to use 128 bit
wide ops if it can?
That was one of the iterations of this patch set, yes. In the end it turned
out to be easier to be able to address frac_hi and frac_lo directly.
It's likely that this choice would have been different if we didn't have to
deal with 32-bit hosts and could rely on the compiler having the 128-bit type.
r~
