[PATCH,testsuite]Adjust test where sizeof int is not sizeof float

[Andy H]

This patch adjust test for case where sizof(float) != sizeof(int), as 
tests assumes this in union.

Tested with avr target and i686 target.

Ok for 4.4 mainline?


2008-06-14  Andy Hutchinson   <hutchinsonandy@aim.com>

   * gcc.dg/tree-ssa/forwprop-6.c:  Use long if size matches float but 
int does not.
    * gcc.dg/tree-ssa/ssa-fre-7.c: Ditto.
    * gcc.dg/tree-ssa/ssa-fre-8.c: Ditto.




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