IPCP testcase for PR29122

[Janis Johnson]

On Mon, Nov 20, 2006 at 04:39:35PM +0200, Razya Ladelsky wrote:
> The fix for PR29122 was approved by Diego and will be committed shortly.
> I want to add this testcase to the IPA testuite.
> 
> I wasn't sure whether  { target lp64 } is aiming correctly to the targets
> that enable -m64.
> Is it ?

{ target lp64 } says to run the test only if it will be compiled as
LP64.  This include testing a compiler that always generates LP64 code,
and biarch compilers with options to generate LP64 code.  Most (I hope)
people who test biarch compilers run the tests with both -m32 and -m64
(or whatever is appropriate for that system), so tests should not use
those options explicitly.

Unless there is a reason why the test should be restricted to LP64
code, remove both the restriction and the -m64.
 
Leave in other options that were necessary to trigger the ICE.

> O.K for GCC4.3?
> 
> 2006-11-20 Razya Ladelsky  <razya@il.ibm.com>
> 
>         * testsuite/gcc.dg/ipa/ipa-6.c: New.

If the -fdump-ipa-cp option was necessary for the ICE, leave it in but
add a dg-final directive to remove the dump file; look at other tests
that use that option to see what's needed.

Is the call to printf necessary, or can it be replaced with something
else?  We try to avoid references to outside libraries.

Janis