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Add must_pass_va_arg_in_stack

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This patch splits out another idiom from the va_arg gimplification
routines, so that there's only one place to update later.

2019-08-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* calls.h (must_pass_va_arg_in_stack): Declare.
	* calls.c (must_pass_va_arg_in_stack): New function.
	* config/alpha/alpha.c (alpha_gimplify_va_arg_1): Use it.
	* config/sh/sh.c (sh_gimplify_va_arg_expr): Likewise.
	* config/stormy16/stormy16.c (xstormy16_gimplify_va_arg_expr):
	Likewise.
	* config/xtensa/xtensa.c (xtensa_gimplify_va_arg_expr): Likewise.

From-SVN: r274696
This commit is contained in:
Richard Sandiford 2019-08-20 08:51:09 +00:00 • committed by Richard Sandiford
parent fde65a89fa
commit 4f53599cb5
7 changed files with 25 additions and 6 deletions
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10
gcc/ChangeLog
View file

@ -1,3 +1,13 @@
2019-08-20 Richard Sandiford <richard.sandiford@arm.com>
* calls.h (must_pass_va_arg_in_stack): Declare.
* calls.c (must_pass_va_arg_in_stack): New function.
* config/alpha/alpha.c (alpha_gimplify_va_arg_1): Use it.
* config/sh/sh.c (sh_gimplify_va_arg_expr): Likewise.
* config/stormy16/stormy16.c (xstormy16_gimplify_va_arg_expr):
Likewise.
* config/xtensa/xtensa.c (xtensa_gimplify_va_arg_expr): Likewise.
2019-08-20 Richard Sandiford <richard.sandiford@arm.com>
* calls.h (pass_va_arg_by_reference): Declare.

9
gcc/calls.c
View file

@ -5900,5 +5900,14 @@ must_pass_in_stack_var_size_or_pad (machine_mode mode, const_tree type)
return false;
}
/* Return true if TYPE must be passed on the stack when passed to
the "..." arguments of a function. */
bool
must_pass_va_arg_in_stack (tree type)
{
return targetm.calls.must_pass_in_stack (TYPE_MODE (type), type);
}
/* Tell the garbage collector about GTY markers in this source file. */
#include "gt-calls.h"

1
gcc/calls.h
View file

@ -28,6 +28,7 @@ extern bool gimple_alloca_call_p (const gimple *);
extern bool alloca_call_p (const_tree);
extern bool must_pass_in_stack_var_size (machine_mode, const_tree);
extern bool must_pass_in_stack_var_size_or_pad (machine_mode, const_tree);
extern bool must_pass_va_arg_in_stack (tree);
extern rtx prepare_call_address (tree, rtx, rtx, rtx *, int, int);
extern bool shift_return_value (machine_mode, bool, rtx);
extern rtx expand_call (tree, rtx, int);

2
gcc/config/alpha/alpha.c
View file

@ -6243,7 +6243,7 @@ alpha_gimplify_va_arg_1 (tree type, tree base, tree offset,
/* If the type could not be passed in registers, skip the block
reserved for the registers. */
if (targetm.calls.must_pass_in_stack (TYPE_MODE (type), type))
if (must_pass_va_arg_in_stack (type))
{
t = build_int_cst (TREE_TYPE (offset), 6*8);
gimplify_assign (offset,

5
gcc/config/sh/sh.c
View file

@ -7656,9 +7656,8 @@ sh_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p,
tree addr, lab_over = NULL, result = NULL;
tree eff_type;
const bool pass_by_ref =
!VOID_TYPE_P (type)
&& targetm.calls.must_pass_in_stack (TYPE_MODE (type), type);
const bool pass_by_ref
= !VOID_TYPE_P (type) && must_pass_va_arg_in_stack (type);
if (pass_by_ref)
type = build_pointer_type (type);

2
gcc/config/stormy16/stormy16.c
View file

@ -1342,7 +1342,7 @@ xstormy16_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p,
count = build3 (COMPONENT_REF, TREE_TYPE (f_count), valist, f_count,
NULL_TREE);
must_stack = targetm.calls.must_pass_in_stack (TYPE_MODE (type), type);
must_stack = must_pass_va_arg_in_stack (type);
size_tree = round_up (size_in_bytes (type), UNITS_PER_WORD);
gimplify_expr (&size_tree, pre_p, NULL, is_gimple_val, fb_rvalue);

2
gcc/config/xtensa/xtensa.c
View file

@ -3328,7 +3328,7 @@ xtensa_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p,
array = create_tmp_var (ptr_type_node);
lab_over = NULL;
if (!targetm.calls.must_pass_in_stack (TYPE_MODE (type), type))
if (!must_pass_va_arg_in_stack (type))
{
lab_false = create_artificial_label (UNKNOWN_LOCATION);
lab_over = create_artificial_label (UNKNOWN_LOCATION);