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sh.c (print_operand): lookup interrupt_handler attribute instead of relying on static variable. 

* sh.c (print_operand): lookup interrupt_handler attribute instead
of relying on static variable.
* (calc_live_regs): Likewise.
* (sh_pragma_insert_attributes): Create interrupt_handler
attribute if a pragma was specified
* (sh_valid_machine_decl_attribute): Don't set static flag.
* sh.h (PRAGMA_INSERT_ATTRIBUTES): New.

From-SVN: r24265
This commit is contained in:
Stan Cox 1998-12-11 11:18:26 +00:00 committed by Stan Cox
parent 7d91fc530a
commit 157131d73a
3 changed files with 63 additions and 4 deletions
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10
gcc/ChangeLog
View File

@ -22,6 +22,16 @@
(fix-header.o): Likewise.
(scan-decls.o): Likewise.
Fri Dec 11 11:02:49 1998 Stan Cox <scox@cygnus.com>
* sh.c (print_operand): lookup interrupt_handler attribute instead
of relying on static variable.
* (calc_live_regs): Likewise.
* (sh_pragma_insert_attributes): Create interrupt_handler
attribute if a pragma was specified
* (sh_valid_machine_decl_attribute): Don't set static flag.
* sh.h (PRAGMA_INSERT_ATTRIBUTES): New.
Fri Dec 11 12:56:07 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* reload1.c (reload_combine): Use BASIC_BLOCK_LIVE_AT_START

53
gcc/config/sh/sh.c
View File

@ -226,13 +226,25 @@ print_operand (stream, x, code)
fprintf (stream, "%s", LOCAL_LABEL_PREFIX);
break;
case '@':
{
int interrupt_handler;
if ((lookup_attribute
("interrupt_handler",
DECL_MACHINE_ATTRIBUTES (current_function_decl)))
!= NULL_TREE)
interrupt_handler = 1;
else
interrupt_handler = 0;
if (trap_exit)
fprintf (stream, "trapa #%d", trap_exit);
else if (pragma_interrupt)
else if (interrupt_handler)
fprintf (stream, "rte");
else
fprintf (stream, "rts");
break;
}
case '#':
/* Output a nop if there's nothing in the delay slot. */
if (dbr_sequence_length () == 0)
@ -3615,13 +3627,22 @@ calc_live_regs (count_ptr, live_regs_mask2)
int reg;
int live_regs_mask = 0;
int count;
int interrupt_handler;
if ((lookup_attribute
("interrupt_handler",
DECL_MACHINE_ATTRIBUTES (current_function_decl)))
!= NULL_TREE)
interrupt_handler = 1;
else
interrupt_handler = 0;
*live_regs_mask2 = 0;
/* If we can save a lot of saves by switching to double mode, do that. */
if (TARGET_SH4 && TARGET_FMOVD && TARGET_FPU_SINGLE)
for (count = 0, reg = FIRST_FP_REG; reg <= LAST_FP_REG; reg += 2)
if (regs_ever_live[reg] && regs_ever_live[reg+1]
&& (! call_used_regs[reg] || (pragma_interrupt && ! pragma_trapa))
&& (! call_used_regs[reg] || (interrupt_handler && ! pragma_trapa))
&& ++count > 2)
{
target_flags &= ~FPU_SINGLE_BIT;
@ -3629,7 +3650,7 @@ calc_live_regs (count_ptr, live_regs_mask2)
}
for (count = 0, reg = FIRST_PSEUDO_REGISTER - 1; reg >= 0; reg--)
{
if ((pragma_interrupt && ! pragma_trapa)
if ((interrupt_handler && ! pragma_trapa)
? (/* Need to save all the regs ever live. */
(regs_ever_live[reg]
|| (call_used_regs[reg]
@ -3951,6 +3972,31 @@ sh_handle_pragma (p_getc, p_ungetc, pname)
return retval;
}
/* Generate 'handle_interrupt' attribute for decls */
void
sh_pragma_insert_attributes (node, attributes, prefix)
tree node;
tree * attributes;
tree * prefix;
{
tree a;
if (! pragma_interrupt
|| TREE_CODE (node) != FUNCTION_DECL)
return;
/* We are only interested in fields. */
if (TREE_CODE_CLASS (TREE_CODE (node)) != 'd')
return;
/* Add a 'handle_interrupt' attribute. */
* attributes = tree_cons (get_identifier ("interrupt_handler"), NULL, * attributes);
return;
}
/* Return nonzero if ATTR is a valid attribute for DECL.
ATTRIBUTES are any existing attributes and ARGS are the arguments
supplied with ATTR.
@ -3979,7 +4025,6 @@ sh_valid_machine_decl_attribute (decl, attributes, attr, args)
if (is_attribute_p ("interrupt_handler", attr))
{
pragma_interrupt = 1;
return 1;
}

4
gcc/config/sh/sh.h
View File

@ -2062,6 +2062,10 @@ extern int sh_valid_machine_decl_attribute ();
#define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
sh_valid_machine_decl_attribute (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
extern void sh_pragma_insert_attributes ();
#define PRAGMA_INSERT_ATTRIBUTES(node, pattr, prefix_attr) \
sh_pragma_insert_attributes (node, pattr, prefix_attr)
extern int sh_flag_remove_dead_before_cse;
extern int rtx_equal_function_value_matters;
extern struct rtx_def *fpscr_rtx;