re PR target/40906 (Wrong code generated for push of long double)

	PR target/40906
	* config/i386/i386.c (ix86_split_long_move): Fix push of multi-part
	source operand.

testsuite/ChangeLog:

	PR target/40906
	* gcc.target/i386/pr40906-1.c: New test.
	* gcc.target/i386/pr40906-2.c: Ditto.
	* gcc.target/i386/pr40906-3.c: Ditto.


Co-Authored-By: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>

From-SVN: r150486