Resend: reorder conditionals in i386.md

[Joseph S. Myers]

On Tue, 7 Aug 2001, Zack Weinberg wrote:

> The interesting cases are more of the form
> 
> 	if (expensive_test (operands[0]) && 0)
> 
> where the compiler cannot eliminate the call to expensive_test because
> it might have side effects.  We know better.

This sounds like a case for adding a __pure__ attribute to expensive_test,
as in <URL: http://gcc.gnu.org/ml/gcc-patches/1999-08n/msg00601.html >
(which reported 150kb compiler size reduction).  (Though I don't know
whether the compiler could optimise this case once the attribute is
given.)

-- 
Joseph S. Myers
jsm28@cam.ac.uk