re PR rtl-optimization/37333 (ICE in ira_flattening, at ira-build.c:2146)

2008-09-09  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-opt/37333
	
	* ira-build.c (ira_create_allocno): Setup frequency to 0.

	* ira-color.c (update_conflict_hard_regno_costs): Remove assert.
	Check zero freq and increase if necessary.

From-SVN: r140160