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gensupport.c (init_rtx_reader_args_cb): Start counting code generating patterns from 1 to free up 0 for CODE_FOR_nothing.

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* gensupport.c (init_rtx_reader_args_cb): Start counting code
	generating patterns from 1 to free up 0 for CODE_FOR_nothing.
	* gencodes.c (main): Give CODE_FOR_nothing the value 0.  Add
	the LAST_INSN_CODE marker at the end.
	* genoutput.c (nothing): New static struct data.
	(idata): Initialize to &nothing.
	(idata_end): Initialize to &nothing.next.
	(init_insn_for_nothing): New function to create dummy 'nothing' insn.
	(main): Use it.
	* genpeep.c (insn_code_number): Remove global variable.
	(gen_peephole): Take it as an argument instead.
	(main): Take insn_code_number from read_md_rtx.
	* optabs.h: Revert r161809:
	(optab_handlers): Change type of insn_code back to insn_code.
	(optab_handler, widening_optab_handler, set_optab_handler,
	set_widening_optab_handler, convert_optab_handler,
	set_convert_optab_handler, direct_optab_handler,
	set_direct_optab_handler): Remove int casts.
	Revert to treating the insn_code field as "insn_code".

From-SVN: r189366
This commit is contained in:
Steven Bosscher 2012-07-09 08:45:12 +00:00
parent 701649fa89
commit e714561a2f
6 changed files with 83 additions and 53 deletions
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22
gcc/ChangeLog
View file

@ -1,3 +1,25 @@
2012-07-09 Steven Bosscher <steven@gcc.gnu.org>
* gensupport.c (init_rtx_reader_args_cb): Start counting code
generating patterns from 1 to free up 0 for CODE_FOR_nothing.
* gencodes.c (main): Give CODE_FOR_nothing the value 0. Add
the LAST_INSN_CODE marker at the end.
* genoutput.c (nothing): New static struct data.
(idata): Initialize to &nothing.
(idata_end): Initialize to &nothing.next.
(init_insn_for_nothing): New function to create dummy 'nothing' insn.
(main): Use it.
* genpeep.c (insn_code_number): Remove global variable.
(gen_peephole): Take it as an argument instead.
(main): Take insn_code_number from read_md_rtx.
* optabs.h: Revert r161809:
(optab_handlers): Change type of insn_code back to insn_code.
(optab_handler, widening_optab_handler, set_optab_handler,
set_widening_optab_handler, convert_optab_handler,
set_convert_optab_handler, direct_optab_handler,
set_direct_optab_handler): Remove int casts.
Revert to treating the insn_code field as "insn_code".
2012-07-08 Oleg Endo <olegendo@gcc.gnu.org>
* config/sh/sh.md (*return_i): Move trap_exit attribute check to ...

7
gcc/gencodes.c
View file

@ -2,7 +2,7 @@
- some macros CODE_FOR_... giving the insn_code_number value
for each of the defined standard insn names.
Copyright (C) 1987, 1991, 1995, 1998, 1999, 2000, 2001, 2003,
2004, 2007, 2010 Free Software Foundation, Inc.
2004, 2007, 2010, 2012 Free Software Foundation, Inc.
This file is part of GCC.
@ -68,7 +68,8 @@ main (int argc, char **argv)
#ifndef GCC_INSN_CODES_H\n\
#define GCC_INSN_CODES_H\n\
\n\
enum insn_code {");
enum insn_code {\n\
CODE_FOR_nothing = 0,\n");
/* Read the machine description. */
@ -85,7 +86,7 @@ enum insn_code {");
gen_insn (desc, insn_code_number);
}
puts (" CODE_FOR_nothing\n\
puts (" LAST_INSN_CODE\n\
};\n\
\n\
#endif /* GCC_INSN_CODES_H */");

25
gcc/genoutput.c
View file

@ -1,6 +1,7 @@
/* Generate code from to output assembler insns as recognized from rtl.
Copyright (C) 1987, 1988, 1992, 1994, 1995, 1997, 1998, 1999, 2000, 2002,
2003, 2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
2003, 2004, 2005, 2007, 2008, 2009, 2010, 2012
Free Software Foundation, Inc.
This file is part of GCC.
@ -171,9 +172,16 @@ struct data
struct operand_data operand[MAX_MAX_OPERANDS];
};
/* This variable points to the first link in the insn chain. */
/* A dummy insn, for CODE_FOR_nothing. */
static struct data nothing;
/* This variable points to the first link in the insn chain. */
static struct data *idata = &nothing;
/* This variable points to the end of the insn chain. This is where
everything relevant from the machien description is appended to. */
static struct data **idata_end = &nothing.next;
static struct data *idata, **idata_end = &idata;
static void output_prologue (void);
static void output_operand_data (void);
@ -987,6 +995,14 @@ gen_split (rtx split, int lineno)
place_operands (d);
}
static void
init_insn_for_nothing (void)
{
memset (&nothing, 0, sizeof (nothing));
nothing.name = "*placeholder_for_nothing";
nothing.filename = "<internal>";
}
extern int main (int, char **);
int
@ -996,11 +1012,12 @@ main (int argc, char **argv)
progname = "genoutput";
init_insn_for_nothing ();
if (!init_rtx_reader_args (argc, argv))
return (FATAL_EXIT_CODE);
output_prologue ();
next_code_number = 0;
next_index_number = 0;
/* Read the machine description. */

30
gcc/genpeep.c
View file

@ -1,6 +1,6 @@
/* Generate code from machine description to perform peephole optimizations.
Copyright (C) 1987, 1989, 1992, 1997, 1998, 1999, 2000, 2003, 2004,
2007, 2010 Free Software Foundation, Inc.
2007, 2010, 2012 Free Software Foundation, Inc.
This file is part of GCC.
@ -47,18 +47,13 @@ static int max_opno;
static int n_operands;
/* Peephole optimizations get insn codes just like insn patterns.
Count them so we know the code of the define_peephole we are handling. */
static int insn_code_number = 0;
static void gen_peephole (rtx);
static void gen_peephole (rtx, int);
static void match_rtx (rtx, struct link *, int);
static void print_path (struct link *);
static void print_code (RTX_CODE);
static void
gen_peephole (rtx peep)
gen_peephole (rtx peep, int insn_code_number)
{
int ninsns = XVECLEN (peep, 0);
int i;
@ -392,24 +387,15 @@ from the machine description file `md'. */\n\n");
while (1)
{
int line_no, rtx_number = 0;
int line_no;
int insn_code_number;
desc = read_md_rtx (&line_no, &rtx_number);
desc = read_md_rtx (&line_no, &insn_code_number);
if (desc == NULL)
break;
if (GET_CODE (desc) == DEFINE_PEEPHOLE)
{
gen_peephole (desc);
insn_code_number++;
}
if (GET_CODE (desc) == DEFINE_INSN
|| GET_CODE (desc) == DEFINE_EXPAND
|| GET_CODE (desc) == DEFINE_SPLIT
|| GET_CODE (desc) == DEFINE_PEEPHOLE2)
{
insn_code_number++;
}
if (GET_CODE (desc) == DEFINE_PEEPHOLE)
gen_peephole (desc, insn_code_number);
}
printf (" return 0;\n}\n\n");

16
gcc/gensupport.c
View file

@ -1,6 +1,6 @@
/* Support routines for the various generation passes.
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
2010, Free Software Foundation, Inc.
2010, 2012 Free Software Foundation, Inc.
This file is part of GCC.
@ -38,6 +38,10 @@ int insn_elision = 1;
static struct obstack obstack;
struct obstack *rtl_obstack = &obstack;
/* Counter for patterns that generate code: define_insn, define_expand,
define_split, define_peephole, and define_peephole2. See read_md_rtx().
Any define_insn_and_splits are already in separate queues so that the
insn and the splitter get a unique number also. */
static int sequence_num;
static int predicable_default;
@ -1397,7 +1401,9 @@ init_rtx_reader_args_cb (int argc, char **argv,
condition_table = htab_create (500, hash_c_test, cmp_c_test, NULL);
init_predicate_table ();
obstack_init (rtl_obstack);
sequence_num = 0;
/* Start at 1, to make 0 available for CODE_FOR_nothing. */
sequence_num = 1;
read_md_files (argc, argv, parse_opt, rtx_handle_directive);
@ -1419,7 +1425,11 @@ init_rtx_reader_args (int argc, char **argv)
return init_rtx_reader_args_cb (argc, argv, 0);
}
/* The entry point for reading a single rtx from an md file. */
/* The entry point for reading a single rtx from an md file. Return
the rtx, or NULL if the md file has been fully processed.
Return the line where the rtx was found in LINENO.
Return the number of code generating rtx'en read since the start
of the md file in SEQNR. */
rtx
read_md_rtx (int *lineno, int *seqnr)

36
gcc/optabs.h
View file

@ -1,6 +1,6 @@
/* Definitions for code generation pass of GNU compiler.
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
2010, 2012 Free Software Foundation, Inc.
This file is part of GCC.
@ -29,6 +29,10 @@ along with GCC; see the file COPYING3. If not see
For example, add_optab applies to addition.
The insn_code slot is the enum insn_code that says how to
generate an insn for this operation on a particular machine mode.
It is CODE_FOR_nothing if there is no such insn on the target machine.
The `lib_call' slot is the name of the library function that
can be used to perform the operation.
@ -36,10 +40,7 @@ along with GCC; see the file COPYING3. If not see
struct optab_handlers
{
/* I - CODE_FOR_nothing, where I is either the insn code of the
associated insn generator or CODE_FOR_nothing if there is no such
insn on the target machine. */
int insn_code;
enum insn_code insn_code;
};
struct widening_optab_handlers
@ -1011,8 +1012,7 @@ extern rtx expand_vec_perm (enum machine_mode, rtx, rtx, rtx, rtx);
static inline enum insn_code
optab_handler (optab op, enum machine_mode mode)
{
return (enum insn_code) (op->handlers[(int) mode].insn_code
+ (int) CODE_FOR_nothing);
return op->handlers[(int) mode].insn_code;
}
/* Like optab_handler, but for widening_operations that have a TO_MODE and
@ -1026,8 +1026,7 @@ widening_optab_handler (optab op, enum machine_mode to_mode,
return optab_handler (op, to_mode);
if (op->widening)
return (enum insn_code) (op->widening->handlers[(int) to_mode][(int) from_mode].insn_code
+ (int) CODE_FOR_nothing);
return op->widening->handlers[(int) to_mode][(int) from_mode].insn_code;
return CODE_FOR_nothing;
}
@ -1037,7 +1036,7 @@ widening_optab_handler (optab op, enum machine_mode to_mode,
static inline void
set_optab_handler (optab op, enum machine_mode mode, enum insn_code code)
{
op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
op->handlers[(int) mode].insn_code = code;
}
/* Like set_optab_handler, but for widening operations that have a TO_MODE
@ -1055,8 +1054,7 @@ set_widening_optab_handler (optab op, enum machine_mode to_mode,
op->widening = (struct widening_optab_handlers *)
xcalloc (1, sizeof (struct widening_optab_handlers));
op->widening->handlers[(int) to_mode][(int) from_mode].insn_code
= (int) code - (int) CODE_FOR_nothing;
op->widening->handlers[(int) to_mode][(int) from_mode].insn_code = code;
}
}
@ -1068,9 +1066,7 @@ static inline enum insn_code
convert_optab_handler (convert_optab op, enum machine_mode to_mode,
enum machine_mode from_mode)
{
return ((enum insn_code)
(op->handlers[(int) to_mode][(int) from_mode].insn_code
+ (int) CODE_FOR_nothing));
return op->handlers[(int) to_mode][(int) from_mode].insn_code;
}
/* Record that insn CODE should be used to perform conversion OP
@ -1080,8 +1076,7 @@ static inline void
set_convert_optab_handler (convert_optab op, enum machine_mode to_mode,
enum machine_mode from_mode, enum insn_code code)
{
op->handlers[(int) to_mode][(int) from_mode].insn_code
= (int) code - (int) CODE_FOR_nothing;
op->handlers[(int) to_mode][(int) from_mode].insn_code = code;
}
/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
@ -1090,8 +1085,7 @@ set_convert_optab_handler (convert_optab op, enum machine_mode to_mode,
static inline enum insn_code
direct_optab_handler (direct_optab op, enum machine_mode mode)
{
return (enum insn_code) (op->handlers[(int) mode].insn_code
+ (int) CODE_FOR_nothing);
return op->handlers[(int) mode].insn_code;
}
/* Record that insn CODE should be used to implement mode MODE of OP. */
@ -1100,7 +1094,7 @@ static inline void
set_direct_optab_handler (direct_optab op, enum machine_mode mode,
enum insn_code code)
{
op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
op->handlers[(int) mode].insn_code = code;
}
/* Return true if UNOPTAB is for a trapping-on-overflow operation. */