Re: [RFC] LKMM: Add volatile_if()

On Sun, Jun 06, 2021 at 09:47:49AM -0400, Alan Stern wrote:

quoted

GCC does not pretend it can understand the asm.  But it can see when
two asm statements are identical.

How similar do two asm strings have to be before they are considered 
identical?  For instance, do changes to the amount of leading or 
trailing whitespace matter?

They have to be identical to be considered identical.

Or what about including an empty assembly statement in one but not the 
other?

GCC does not parse the assembler template.


Segher