[PATCH v2 1/3] app/testpmd: add register keyword

[Stephen Hemminger]

On Wed, 21 Aug 2024 20:08:55 +0530
Vipin Varghese <vipin.varghese at amd.com> wrote:

> diff --git a/app/test-pmd/macswap_sse.h b/app/test-pmd/macswap_sse.h
> index 223f87a539..29088843b7 100644
> --- a/app/test-pmd/macswap_sse.h
> +++ b/app/test-pmd/macswap_sse.h
> @@ -16,13 +16,13 @@ do_macswap(struct rte_mbuf *pkts[], uint16_t nb,
>  	uint64_t ol_flags;
>  	int i;
>  	int r;
> -	__m128i addr0, addr1, addr2, addr3;
> +	register __m128i addr0, addr1, addr2, addr3;

Some compilers treat register as a no-op. Are you sure? Did you check with godbolt.