2008-06-12 H.J. Lu <hongjiu.lu@intel.com>

	* cfgexpand.c (expand_stack_alignment): Don't set need_drap
	to true for calling eh_return.

	* dwarf2out.c (dw_fde_struct): Remove calls_eh_return.
	(dwarf2out_begin_prologue): Updated.
	(reg_save_with_expression): Likewise.

	* config/i386/i386.c (find_drap_reg): Don't check calls_eh_return.
	(ix86_update_stack_boundary): Set incoming stack boundary
	to preferred stack boundary if a function calls eh_return.
	(ix86_expand_epilogue): Assert stack isn't realigned when
	eh_return is called.


git-svn-id: https://gcc.gnu.org/svn/gcc/branches/stack@136731 138bc75d-0d04-0410-961f-82ee72b054a4

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