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Re: Add internal bitcount functions

From: Jeff Law <law at redhat dot com>
To: gcc-patches at gcc dot gnu dot org, richard dot sandiford at arm dot com
Date: Mon, 9 Nov 2015 15:30:27 -0700
Subject: Re: Add internal bitcount functions
Authentication-results: sourceware.org; auth=none
References: <8737wirnvi dot fsf at e105548-lin dot cambridge dot arm dot com>

On 11/07/2015 05:32 AM, Richard Sandiford wrote:

This patch adds internal function equivalents of all the INT_FN functions.
Unlike the math functions, these functions never set errno and the internal
functions should be exactly equivalent to the built-in ones.  The reason
for defining the internal functions is so that we can extend the
functionality to other modes, in particular vector modes.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
OK to install?

Thanks,
Richard


gcc/
	* internal-fn.def (DEF_INTERNAL_INT_FN): New macro.
	(CLRSB, CLZ, CTZ, FFS, PARITY, POPCOUNT): New functions.
	* builtins.c (associated_internal_fn): Handle them.

OK.
jeff

References:
- Add internal bitcount functions
  - From: Richard Sandiford

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