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xtensa.c (function_arg_boundary): New.

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* config/xtensa/xtensa.c (function_arg_boundary): New.
	(function_arg, xtensa_gimplify_va_arg_expr): Limit alignment to 
	STACK_BOUNDARY.
	* config/xtensa/xtensa.h (FUNCTION_ARG_BOUNDARY): Move code to new
	function_arg_boundary function that limits alignment to STACK_BOUNDARY.

From-SVN: r116469
This commit is contained in:
Bob Wilson 2006-08-26 17:03:22 +00:00 committed by Bob Wilson
parent eff3a27644
commit d234898598
3 changed files with 27 additions and 13 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2006-08-26 Bob Wilson <bob.wilson@acm.org>
* config/xtensa/xtensa.c (function_arg_boundary): New.
(function_arg, xtensa_gimplify_va_arg_expr): Limit alignment to
STACK_BOUNDARY.
* config/xtensa/xtensa.h (FUNCTION_ARG_BOUNDARY): Move code to new
function_arg_boundary function that limits alignment to STACK_BOUNDARY.
2006-08-26 Jakub Jelinek <jakub@redhat.com>
PR middle-end/28683

20
gcc/config/xtensa/xtensa.c
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@ -1,5 +1,5 @@
/* Subroutines for insn-output.c for Tensilica's Xtensa architecture.
Copyright 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Copyright 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
This file is part of GCC.
@ -1470,7 +1470,7 @@ function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type,
if (type && (TYPE_ALIGN (type) > BITS_PER_WORD))
{
int align = TYPE_ALIGN (type) / BITS_PER_WORD;
int align = MIN (TYPE_ALIGN (type), STACK_BOUNDARY) / BITS_PER_WORD;
*arg_words = (*arg_words + align - 1) & -align;
}
@ -1486,6 +1486,20 @@ function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type,
}
int
function_arg_boundary (enum machine_mode mode, tree type)
{
unsigned int alignment;
alignment = type ? TYPE_ALIGN (type) : GET_MODE_ALIGNMENT (mode);
if (alignment < PARM_BOUNDARY)
alignment = PARM_BOUNDARY;
if (alignment > STACK_BOUNDARY)
alignment = STACK_BOUNDARY;
return alignment;
}
static bool
xtensa_return_in_msb (tree valtype)
{
@ -2185,7 +2199,7 @@ xtensa_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p,
if (TYPE_ALIGN (type) > BITS_PER_WORD)
{
int align = TYPE_ALIGN (type) / BITS_PER_UNIT;
int align = MIN (TYPE_ALIGN (type), STACK_BOUNDARY) / BITS_PER_UNIT;
t = build2 (PLUS_EXPR, integer_type_node, orig_ndx,
build_int_cst (NULL_TREE, align - 1));

12
gcc/config/xtensa/xtensa.h
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@ -1,5 +1,5 @@
/* Definitions of Tensilica's Xtensa target machine for GNU compiler.
Copyright 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Copyright 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
This file is part of GCC.
@ -728,15 +728,7 @@ typedef struct xtensa_args
#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
function_arg (&CUM, MODE, TYPE, TRUE)
/* Specify function argument alignment. */
#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
((TYPE) != 0 \
? (TYPE_ALIGN (TYPE) <= PARM_BOUNDARY \
? PARM_BOUNDARY \
: TYPE_ALIGN (TYPE)) \
: (GET_MODE_ALIGNMENT (MODE) <= PARM_BOUNDARY \
? PARM_BOUNDARY \
: GET_MODE_ALIGNMENT (MODE)))
#define FUNCTION_ARG_BOUNDARY function_arg_boundary
/* Profiling Xtensa code is typically done with the built-in profiling
feature of Tensilica's instruction set simulator, which does not