i386.c (ix86_can_use_return_insn_p): Check for padding0, too.

2009-09-09  Kai Tietz  <kai.tietz@onevision.com>

	PR/41315
	* config/i386.c (ix86_can_use_return_insn_p): Check for
	padding0, too.
	(ix86_expand_prologue): Take frame.padding0 into logic of
	to_allocate checks.
	(ix86_expand_epilogue): Likewise.

From-SVN: r151570