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SubjectRe: [PATCH] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions
Date
Stephen Boyd <sboyd@codeaurora.org> writes:

> +int __aeabi_idiv(int numerator, int denominator)
> +{
> + if (static_key_false(&cpu_has_idiv)) {
> + int ret;
> +
> + asm volatile (
> + ".arch_extension idiv\n"
> + "sdiv %0, %1, %2"
> + : "=&r" (ret)

There is no need for the & in the output constraint. Dropping it allows
using one of the source registers as destination which may sometimes be
beneficial.

> + : "r" (numerator), "r" (denominator));
> +
> + return ret;
> + }
> +
> + return ___aeabi_idiv(numerator, denominator);
> +}

--
Måns Rullgård
mans@mansr.com
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