[PATCH] Fix PR target/10072

[Eric Botcazou]

> "An" expression?  By this you mean *any* expression?

Yes, I mean anywhere except when "the comparison operation is being tested 
(e.g., the first operand of an `if_then_else')".

> If so, that includes sets, and thus all of them are valid.

On a given machine? The docs contains also this line:
"All comparison operations producing data must use the same mode, which is 
machine-specific."

-- 
Eric Botcazou