basic asm and memory clobbers

[Andrew Haley]

On 25/11/15 02:11, David Wohlferd wrote:
> The 'fix' I am proposing is to give warnings for every use of basic asm 
> inside functions (top-level asm is not a problem).

I'm not sure that's such a great idea on its own.

My suggestion:

1.  Clobber memory.

2.  Document a rule which says that all registers which are used must be
    saved and restored.

This won't break any existing usages, and is AFAICS entirely in the spirit
of what was originally intended and with the ISO C specification.

Andrew.