Handle bitop with INTEGER_CST in analyze_and_compute_bitop_with_inv_effect.

analyze_and_compute_bitop_with_inv_effect assumes the first operand is
loop invariant which is not the case when it's INTEGER_CST.

gcc/ChangeLog:

	PR tree-optimization/105735
	PR tree-optimization/111972
	* tree-scalar-evolution.cc
	(analyze_and_compute_bitop_with_inv_effect): Handle bitop with
	INTEGER_CST.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/pr105735-3.c: New test.