Re: [U-Boot] [RFC PATCH v2] ARM: Avoid compiler optimization for usages of readb, writeb and friends.

On 22.12.2010 08:52, Wolfgang Denk wrote:

Dear Dirk Behme,

In message4D11A65E.8040200@googlemail.com you wrote:

...

Btw, I tried to send a summary of our issues to the Codesourcery =

mailing list:

http://www.codesourcery.com/archives/arm-gnu/msg03989.html

Let's see if we get an answer.

You got one: http://www.codesourcery.com/archives/arm-gnu/msg03990.html

And it sounds like a reasonable explanation to me.

An additional answer, mainly covering the question why the volatile is optimized away:

http://www.codesourcery.com/archives/arm-gnu/msg03999.html

Best regards

Dirk