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Date: Fri, 2 Jun 2017 10:30:21 +0100
From: Bruce Richardson <bruce.richardson@intel.com>
To: Sangjin Han <sangjin@eecs.berkeley.edu>
Cc: dev@dpdk.org
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Subject: Re: [dpdk-dev] [PATCH v2] lpm: fix build error on g++ with -O0
	option
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On Fri, Jun 02, 2017 at 05:07:46AM +0000, Sangjin Han wrote:
> When rte_lpm.h is used on x86, -O0 option (no optimization at all)
> given to gcc causes a compile error like this:
> 
> error: the last argument must be an 8-bit immediate
>    i24 = _mm_srli_si128(i24, sizeof(uint64_t));
> 
> -O0 option is useful for debugging and code coverage measurement, but
> this error prevents DPDK programs from building. This patch replaces
> "sizeof(uint64_t)" with a constant literal "8" to work around the issue.
> The issue occurs on gcc/g++ versions from 4.8 to 5.
> 
> Signed-off-by: Sangjin Han <sangjin@eecs.berkeley.edu>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>