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Re: basic asm and memory clobbers - Proposed solution

From: Jeff Law <law at redhat dot com>
To: David Wohlferd <dw at LimeGreenSocks dot com>, Andrew Haley <aph at redhat dot com>, Paul_Koning at Dell dot com, bernd dot edlinger at hotmail dot de
Cc: gcc at gcc dot gnu dot org
Date: Tue, 1 Dec 2015 20:42:17 -0700
Subject: Re: basic asm and memory clobbers - Proposed solution
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On 12/01/2015 03:29 PM, David Wohlferd wrote:

On 11/30/2015 4:01 AM, Andrew Haley wrote:
 >> There is a way for people to be clear about what they want to clobber,
 >> and that's to use extended asm.  The way to clear up the ambiguity
is to
 >> start deprecating basic asm, not to add to the confusion by changing
its
 >> behavior after all these years.
 >
 > Well, I disagree.  The warning is good, but so is the memory clobber.
 > They're not exclusive.

As Richard Henderson put it: "I'd be perfectly happy to deprecate and
later completely remove basic asm within functions."

I understand Richard's position and while I think it has some merit, Ithink it's probably taking things too far at this time.


Jeff

References:
- Re: basic asm and memory clobbers - Proposed solution
  - From: David Wohlferd

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