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[GCC RFC]Expensive internal function calls.

From: Bin Cheng <Bin dot Cheng at arm dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: nd <nd at arm dot com>
Date: Fri, 18 Aug 2017 08:45:24 +0000
Subject: [GCC RFC]Expensive internal function calls.
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Hi,
As a followup patch for fix to PR81832, this patch considers internal function call to
IFN_LOOP_DIST_ALIAS and IFN_LOOP_VECTORIZED as expensive.  Or interpreted
in another way: return false since we shouldn't be asked the question?  Any comments?
BTW, I have no problem to drop this if not appropriate.

Thanks,
bin
2017-08-16  Bin Cheng  <bin.cheng@arm.com>

	* gimple.c (gimple_inexpensive_call_p): Consider IFN_LOOP_DIST_ALIAS
	and IFN_LOOP_VECTORIZED as expensive calls.

Attachment: expensive-ifn-calls.txt
Description: expensive-ifn-calls.txt

Follow-Ups:
- Re: [GCC RFC]Expensive internal function calls.
  - From: Richard Biener

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