Re: Request for discussion: Rewrite of inline assembler docs

[Kyrill Tkachov <kyrylo dot tkachov at arm dot com>]

On 27/02/14 11:07, Andrew Haley wrote:
> Over the years there has been a great deal of traffic on these lists
> caused by misunderstandings of GCC's inline assembler.  That's partly
> because it's inherently tricky, but the existing documentation needs
> to be improved.
>
> dw <limegreensocks@yahoo.com> has done a fairly thorough reworking of
> the documentation.  I've helped a bit.
>
> Section 6.41 of the GCC manual has been rewritten.  It has become:
>
> 6.41 How to Use Inline Assembly Language in C Code
> 6.41.1 Basic Asm - Assembler Instructions with No Operands
> 6.41.2 Extended Asm - Assembler Instructions with C Expression Operands
>
> We could simply post the patch to GCC-patches and have at it, but I
> think it's better to discuss the document here first.  You can read it
> at
>
> http://www.LimeGreenSocks.com/gcc/Basic-Asm.html
> http://www.LimeGreenSocks.com/gcc/Extended-Asm.html
> http://www.LimeGreenSocks.com/gcc/extend04.zip (contains .texi, .patch,
> and affected html pages)
>
> All comments are very welcome.
Hi Andrew, dw,

Thanks for doing this!

In the Extended Asm documentation: Other format strings section:
"'%=' outputs a number that is unique to each instruction in the entire 
compilation."

I find the term 'instruction' to be confusing here. From what I understand the 
number is unique to each asm statement, which may contain multiple assembly 
instructions. IMHO it would be clearer to say "unique to each asm statement"

Kyrill


> Andrew.