re PR middle-end/36253 (Caller-save stack slot may not have proper alignment)

re PR middle-end/36253 (Caller-save stack slot may not have proper alignment)

2008-05-26  H.J. Lu  <hongjiu.lu@intel.com>

	PR middle-end/36253
	* caller-save.c (insert_restore): Verify alignment of spill
	space.
	(insert_save): Likewise.

	* cfgexpand.c (LOCAL_ALIGNMENT): Removed.

	* defaults.h (LOCAL_ALIGNMENT): New. Provide default.
	(STACK_SLOT_ALIGNMENT): Likewise.

	* function.c (LOCAL_ALIGNMENT): Removed.
	(get_stack_local_alignment): New.
	(assign_stack_local): Use it.  Set alignment on stack slot.
	(assign_stack_temp_for_type): Use get_stack_local_alignment.

	* config/i386/i386.h (LOCAL_ALIGNMENT): Updated.
	(STACK_SLOT_ALIGNMENT): New.

	* config/i386/i386.c (ix86_local_alignment): Handle caller-save
	stack slot in XFmode.

	* doc/tm.texi (STACK_SLOT_ALIGNMENT): New.

From-SVN: r135927