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configure.in (stage1_warn_cflags): Add -Wstrict-prototypes -Wmissing-prototypes.

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* configure.in (stage1_warn_cflags): Add -Wstrict-prototypes
	-Wmissing-prototypes.
	* configure: Regenerate.
	* gcc.texi: Remove explanation of MD_CALL_PROTOTYPES.

	* builtins.c, calls.c: Change all instances of gen_call_* or
	gen_sibcall_* to GEN_CALL_* and GEN_SIBCALL_*.
	* calls.c (struct_value_size_rtx): Separate definition from
	initialization to avoid unused variable warning.

	* genflags.c (gen_macro): New function.
	(gen_proto): Call it for gen_call_* and gen_sibcall_*.
	(gen_nonproto): Delete.
	(gen_insn): Put all insns on the same obstack.
	(main): Generate prototypes for everything unconditionally.

From-SVN: r34213
This commit is contained in:
Zack Weinberg 2000-05-27 22:34:05 +00:00 • committed by Zack Weinberg
parent f12bc141e1
commit f45c9d956f
7 changed files with 92 additions and 74 deletions
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16
gcc/ChangeLog
View file

@ -1,5 +1,21 @@
2000-05-27 Zack Weinberg <zack@wolery.cumb.org>
* configure.in (stage1_warn_cflags): Add -Wstrict-prototypes
-Wmissing-prototypes.
* configure: Regenerate.
* gcc.texi: Remove explanation of MD_CALL_PROTOTYPES.
* builtins.c, calls.c: Change all instances of gen_call_* or
gen_sibcall_* to GEN_CALL_* and GEN_SIBCALL_*.
* calls.c (struct_value_size_rtx): Separate definition from
initialization to avoid unused variable warning.
* genflags.c (gen_macro): New function.
(gen_proto): Call it for gen_call_* and gen_sibcall_*.
(gen_nonproto): Delete.
(gen_insn): Put all insns on the same obstack.
(main): Generate prototypes for everything unconditionally.
* configure.in: Add AC_CHECK_TYPE(ssize_t). Remove commented
out check for wchar_t.
* acconfig.h: Add template for ssize_t. Remove @TOP@.

2
gcc/builtins.c
View file

@ -981,7 +981,7 @@ expand_builtin_apply (function, arguments, argsize)
valreg = gen_rtx_REG (mode, regno);
}
emit_call_insn (gen_call_value (valreg,
emit_call_insn (GEN_CALL_VALUE (valreg,
gen_rtx_MEM (FUNCTION_MODE, function),
const0_rtx, NULL_RTX, const0_rtx));

23
gcc/calls.c
View file

@ -435,12 +435,13 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
int ecf_flags;
{
rtx rounded_stack_size_rtx = GEN_INT (rounded_stack_size);
#if defined (HAVE_call) && defined (HAVE_call_value)
rtx struct_value_size_rtx = GEN_INT (struct_value_size);
#endif
rtx call_insn;
int already_popped = 0;
HOST_WIDE_INT n_popped = RETURN_POPS_ARGS (fndecl, funtype, stack_size);
#if defined (HAVE_call) && defined (HAVE_call_value)
rtx struct_value_size_rtx;
struct_value_size_rtx = GEN_INT (struct_value_size);
#endif
/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
and we don't want to load it into a register as an optimization,
@ -461,12 +462,12 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
if possible, for the sake of frame pointer elimination. */
if (valreg)
pat = gen_sibcall_value_pop (valreg,
pat = GEN_SIBCALL_VALUE_POP (valreg,
gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg,
n_pop);
else
pat = gen_sibcall_pop (gen_rtx_MEM (FUNCTION_MODE, funexp),
pat = GEN_SIBCALL_POP (gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg, n_pop);
emit_call_insn (pat);
@ -494,11 +495,11 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
if possible, for the sake of frame pointer elimination. */
if (valreg)
pat = gen_call_value_pop (valreg,
pat = GEN_CALL_VALUE_POP (valreg,
gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg, n_pop);
else
pat = gen_call_pop (gen_rtx_MEM (FUNCTION_MODE, funexp),
pat = GEN_CALL_POP (gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg, n_pop);
emit_call_insn (pat);
@ -512,12 +513,12 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
&& HAVE_sibcall && HAVE_sibcall_value)
{
if (valreg)
emit_call_insn (gen_sibcall_value (valreg,
emit_call_insn (GEN_SIBCALL_VALUE (valreg,
gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx,
next_arg_reg, NULL_RTX));
else
emit_call_insn (gen_sibcall (gen_rtx_MEM (FUNCTION_MODE, funexp),
emit_call_insn (GEN_SIBCALL (gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg,
struct_value_size_rtx));
}
@ -528,12 +529,12 @@ emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
if (HAVE_call && HAVE_call_value)
{
if (valreg)
emit_call_insn (gen_call_value (valreg,
emit_call_insn (GEN_CALL_VALUE (valreg,
gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg,
NULL_RTX));
else
emit_call_insn (gen_call (gen_rtx_MEM (FUNCTION_MODE, funexp),
emit_call_insn (GEN_CALL (gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg,
struct_value_size_rtx));
}

2
gcc/configure vendored
View file

@ -1362,7 +1362,7 @@ echo "$ac_t"$ac_cv_prog_cc_no_long_long 1>&6
# If the native compiler is GCC, we can enable warnings even in stage1.
# That's useful for people building cross-compilers, or just running a
# quick `make'.
stage1_warn_cflags=" -W -Wall -Wtraditional -Wwrite-strings"
stage1_warn_cflags=" -W -Wall -Wtraditional -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes"
stage2_warn_cflags="$stage1_warn_cflags -pedantic -Wno-long-long"
if test "x$GCC" = "xyes"; then
if test $ac_cv_prog_cc_no_long_long = yes; then

2
gcc/configure.in
View file

@ -342,7 +342,7 @@ echo "$ac_t"$ac_cv_prog_cc_no_long_long 1>&6
# If the native compiler is GCC, we can enable warnings even in stage1.
# That's useful for people building cross-compilers, or just running a
# quick `make'.
stage1_warn_cflags=" -W -Wall -Wtraditional -Wwrite-strings"
stage1_warn_cflags=" -W -Wall -Wtraditional -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes"
stage2_warn_cflags="$stage1_warn_cflags -pedantic -Wno-long-long"
if test "x$GCC" = "xyes"; then
if test $ac_cv_prog_cc_no_long_long = yes; then

9
gcc/gcc.texi
View file

@ -3911,15 +3911,6 @@ GCC. If @samp{USE_PROTOTYPES} is not defined, it will be
determined automatically whether your compiler supports
prototypes by checking if @samp{__STDC__} is defined.
@findex MD_CALL_PROTOTYPES
@item MD_CALL_PROTOTYPES
Define this if you wish to generate prototypes for the @code{gen_call}
or @code{gen_call_value} functions generated from the machine
description file. If @samp{USE_PROTOTYPES} is defined to be 0, or the
host compiler does not support prototypes, this macro has no effect. As
soon as all of the machine descriptions are modified to have the
appropriate number of arguments, this macro will be removed.
@findex PATH_SEPARATOR
@item PATH_SEPARATOR
Define this macro to be a C character constant representing the

112
gcc/genflags.c
View file

@ -33,8 +33,8 @@ Boston, MA 02111-1307, USA. */
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
/* Obstacks to remember normal, and call insns. */
static struct obstack call_obstack, normal_obstack;
/* Obstack to remember insns with. */
static struct obstack obstack;
/* Max size of names encountered. */
static int max_id_len;
@ -45,7 +45,7 @@ static int max_opno;
static void max_operand_1 PARAMS ((rtx));
static int num_operands PARAMS ((rtx));
static void gen_proto PARAMS ((rtx));
static void gen_nonproto PARAMS ((rtx));
static void gen_macro PARAMS ((const char *, int, int));
static void gen_insn PARAMS ((rtx));
/* Count the number of match_operand's found. */
@ -98,6 +98,36 @@ num_operands (insn)
return max_opno + 1;
}
/* Print out a wrapper macro for a function which corrects the number
of arguments it takes. Any missing arguments are assumed to be at
the end. */
static void
gen_macro (name, real, expect)
const char *name;
int real, expect;
{
int i;
if (real > expect)
abort ();
if (real == 0)
abort ();
/* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
fputs ("#define GEN_", stdout);
for (i = 0; name[i]; i++)
putchar (TOUPPER (name[i]));
putchar('(');
for (i = 0; i < expect - 1; i++)
printf ("%c, ", i + 'A');
printf ("%c) gen_%s (", i + 'A', name);
for (i = 0; i < real - 1; i++)
printf ("(%c), ", i + 'A');
printf ("(%c))\n", i + 'A');
}
/* Print out prototype information for a function. */
static void
@ -105,7 +135,28 @@ gen_proto (insn)
rtx insn;
{
int num = num_operands (insn);
printf ("extern rtx gen_%-*s PARAMS ((", max_id_len, XSTR (insn, 0));
const char *name = XSTR (insn, 0);
/* Many md files don't refer to the last two operands passed to the
call patterns. This means their generator functions will be two
arguments too short. Instead of changing every md file to touch
those operands, we wrap the prototypes in macros that take the
correct number of arguments. */
if (name[0] == 'c' || name[0] == 's')
{
if (!strcmp (name, "call")
|| !strcmp (name, "call_pop")
|| !strcmp (name, "sibcall")
|| !strcmp (name, "sibcall_pop"))
gen_macro (name, num, 4);
else if (!strcmp (name, "call_value")
|| !strcmp (name, "call_value_pop")
|| !strcmp (name, "sibcall_value")
|| !strcmp (name, "sibcall_value_pop"))
gen_macro (name, num, 5);
}
printf ("extern rtx gen_%-*s PARAMS ((", max_id_len, name);
if (num == 0)
printf ("void");
@ -118,15 +169,7 @@ gen_proto (insn)
}
printf ("));\n");
}
/* Print out a function declaration without a prototype. */
static void
gen_nonproto (insn)
rtx insn;
{
printf ("extern rtx gen_%s ();\n", XSTR (insn, 0));
}
static void
@ -135,7 +178,6 @@ gen_insn (insn)
{
const char *name = XSTR (insn, 0);
const char *p;
struct obstack *obstack_ptr;
int len;
/* Don't mention instructions whose names are the null string
@ -167,24 +209,7 @@ gen_insn (insn)
printf (")\n");
}
/* Save the current insn, so that we can later put out appropriate
prototypes. At present, most md files have the wrong number of
arguments for the call insns (call, call_value, call_pop,
call_value_pop) ignoring the extra arguments that are passed for
some machines, so by default, turn off the prototype. */
obstack_ptr = ((name[0] == 'c' || name[0] == 's')
&& (!strcmp (name, "call")
|| !strcmp (name, "call_value")
|| !strcmp (name, "call_pop")
|| !strcmp (name, "call_value_pop")
|| !strcmp (name, "sibcall")
|| !strcmp (name, "sibcall_value")
|| !strcmp (name, "sibcall_pop")
|| !strcmp (name, "sibcall_value_pop")))
? &call_obstack : &normal_obstack;
obstack_grow (obstack_ptr, &insn, sizeof (rtx));
obstack_grow (&obstack, &insn, sizeof (rtx));
}
extern int main PARAMS ((int, char **));
@ -196,13 +221,11 @@ main (argc, argv)
{
rtx desc;
rtx dummy;
rtx *call_insns;
rtx *normal_insns;
rtx *insns;
rtx *insn_ptr;
progname = "genflags";
obstack_init (&call_obstack);
obstack_init (&normal_obstack);
obstack_init (&obstack);
if (argc <= 1)
fatal ("No input file name.");
@ -228,25 +251,12 @@ from the machine description file `md'. */\n\n");
/* Print out the prototypes now. */
dummy = (rtx) 0;
obstack_grow (&call_obstack, &dummy, sizeof (rtx));
call_insns = (rtx *) obstack_finish (&call_obstack);
obstack_grow (&obstack, &dummy, sizeof (rtx));
insns = (rtx *) obstack_finish (&obstack);
obstack_grow (&normal_obstack, &dummy, sizeof (rtx));
normal_insns = (rtx *) obstack_finish (&normal_obstack);
for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++)
for (insn_ptr = insns; *insn_ptr; insn_ptr++)
gen_proto (*insn_ptr);
printf ("\n#ifdef MD_CALL_PROTOTYPES\n");
for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
gen_proto (*insn_ptr);
printf ("\n#else /* !MD_CALL_PROTOTYPES */\n");
for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
gen_nonproto (*insn_ptr);
printf ("#endif /* !MD_CALL_PROTOTYPES */\n");
fflush (stdout);
return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
}