Make sure that all variable sized adjustments are multiple of preferred

Make sure that all variable sized adjustments are multiple of preferred
stack boundary after stack alignment.

gcc/

2010-09-20  H.J. Lu  <hongjiu.lu@intel.com>

	Backport from mainline
	2010-09-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR middle-end/45234
	* calls.c (expand_call): Make sure that all variable sized
	adjustments are multiple of preferred stack boundary after
	stack alignment.

gcc/testsuite/

2010-09-20  H.J. Lu  <hongjiu.lu@intel.com>

	Backport from mainline
	2010-09-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR middle-end/45234
	* gcc.dg/torture/stackalign/alloca-5.c: New.

From-SVN: r164453