[patch] for PR 26235

[Mark Mitchell]

Zdenek Dvorak wrote:

> This patch makes us handle 'i' and 'n' fields correctly, and consider
> fields of unknown type non-equal.  Bootstrapped & regtested on i686.
> I could only check that it appears to fix the problem from
> crosscompiler, as it is only reported from an architecture I do not
> have access to (hppa2.0w-hp-hpux11.11).  Could someone please verify
> that it fixes the problem there?
> 
> Zdenek
> 
> 	PR rtl-optimization/26235
> 	* loop-invariant.c (hash_invariant_expr_1): Handle 'i' and 'n' formats.
> 	(invariant_expr_equal_p): Handle 'i' and 'n' formats.  Fail on unknown
> 	format.

This patch is OK, whether or not it fixes the patch; it seems clearly
correct.  However, it would of course be good to know that it actually
fixes the patch on HP-UX.

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
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