if-to-switch: Fix test-suite patterns.

if-to-switch: Fix test-suite patterns.

gcc/testsuite/ChangeLog:

	PR testsuite/98085
	* g++.dg/tree-ssa/if-to-switch-1.C: Do not expect precise number
	of BBs.
	* gcc.dg/tree-ssa/if-to-switch-1.c: Likewise.
	* gcc.dg/tree-ssa/if-to-switch-2.c: Likewise. Find better name
	for the function.
	* gcc.dg/tree-ssa/if-to-switch-3.c: Likewise. Find better name
	for the function.
	* gcc.dg/tree-ssa/if-to-switch-5.c: Likewise.