re PR rtl-optimization/33721 ([meta-bug] Gcc can't properly align stack variable)

	PR rtl-opt/33721
	* explow.c (allocate_dynamic_stack_space): Add REQUIRED_ALIGN parm,
	remove TARGET parm, convert KNOWN_ALIGN parm to SIZE_ALIGN.  Honor
	required_align, tidy the code a bit.  Emit split_stack code in the
	right place.  Mark the return value with the alignment properly.
	* expr.h (allocate_dynamic_stack_space): Update decl.
	* builtins.c (expand_builtin_apply): Update call to
	allocate_dynamic_stack_space.
	(expand_builtin_alloca): Likewise.  Remove TARGET parameter.
	* calls.c (initialize_argument_information): Update call to
	allocate_dynamic_stack_space.
	(expand_call): Likewise.

	* cfgexpand.c (get_decl_align_unit): Don't limit alignment.
	Don't update_stack_alignment here.
	(alloc_stack_frame_space): Make ALIGN unsigned.
	(stack_var_cmp): Sort by alignment too.
	(partition_stack_vars): Don't merge large and small alignment vars.
	(expand_one_stack_var_at): Add BASE and BASE_ALIGN parameters.
	Take care when BASE is not virtual_stack_vars_rtx.
	(expand_stack_vars): Allocate dynamic stack space for large
	alignment variables.
	(expand_one_stack_var): Update all to expand_one_stack_var_at.
	(defer_stack_allocation): True for large alignment vars.
	(update_stack_alignment): Merge into ...
	(expand_one_var): ... here.
	(gimple_expand_cfg): Place code from expand_stack_vars.

From-SVN: r165240

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/expr.h b/gcc/expr.h
index 8631ea7..3d4ad23 100644
--- a/gcc/expr.h
+++ b/gcc/expr.h
@@ -642,7 +642,7 @@ extern void emit_stack_restore (enum save_level, rtx, rtx);
 extern void update_nonlocal_goto_save_area (void);
 
 /* Allocate some space on the stack dynamically and return its address.  */
-extern rtx allocate_dynamic_stack_space (rtx, rtx, int, bool);
+extern rtx allocate_dynamic_stack_space (rtx, unsigned, unsigned, bool);
 
 /* Emit one stack probe at ADDRESS, an address within the stack.  */
 extern void emit_stack_probe (rtx);