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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [params.c] - Rev 758
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/* params.c - Run-time parameters. Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Written by Mark Mitchell <mark@codesourcery.com>. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include "config.h" #include "system.h" #include "coretypes.h" #include "common/common-target.h" #include "params.h" #include "diagnostic-core.h" /* An array containing the compiler parameters and their current values. */ param_info *compiler_params; /* The number of entries in the table. */ static size_t num_compiler_params; /* Whether the parameters have all been initialized and had their default values determined. */ static bool params_finished; static const param_info lang_independent_params[] = { #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ { OPTION, DEFAULT, MIN, MAX, HELP }, #include "params.def" #undef DEFPARAM { NULL, 0, 0, 0, NULL } }; /* Add the N PARAMS to the current list of compiler parameters. */ void add_params (const param_info params[], size_t n) { gcc_assert (!params_finished); /* Allocate enough space for the new parameters. */ compiler_params = XRESIZEVEC (param_info, compiler_params, num_compiler_params + n); /* Copy them into the table. */ memcpy (compiler_params + num_compiler_params, params, n * sizeof (param_info)); /* Keep track of how many parameters we have. */ num_compiler_params += n; } /* Add all parameters and default values that can be set in both the driver and the compiler proper. */ void global_init_params (void) { add_params (lang_independent_params, LAST_PARAM); targetm_common.option_default_params (); } /* Note that all parameters have been added and all default values set. */ void finish_params (void) { params_finished = true; } /* Set the value of the parameter given by NUM to VALUE in PARAMS and PARAMS_SET. If EXPLICIT_P, this is being set by the user; otherwise it is being set implicitly by the compiler. */ static void set_param_value_internal (compiler_param num, int value, int *params, int *params_set, bool explicit_p) { size_t i = (size_t) num; gcc_assert (params_finished); params[i] = value; if (explicit_p) params_set[i] = true; } /* Set the VALUE associated with the parameter given by NAME in PARAMS and PARAMS_SET. */ void set_param_value (const char *name, int value, int *params, int *params_set) { size_t i; /* Make sure nobody tries to set a parameter to an invalid value. */ gcc_assert (value != INVALID_PARAM_VAL); /* Scan the parameter table to find a matching entry. */ for (i = 0; i < num_compiler_params; ++i) if (strcmp (compiler_params[i].option, name) == 0) { if (value < compiler_params[i].min_value) error ("minimum value of parameter %qs is %u", compiler_params[i].option, compiler_params[i].min_value); else if (compiler_params[i].max_value > compiler_params[i].min_value && value > compiler_params[i].max_value) error ("maximum value of parameter %qs is %u", compiler_params[i].option, compiler_params[i].max_value); else set_param_value_internal ((compiler_param) i, value, params, params_set, true); return; } /* If we didn't find this parameter, issue an error message. */ error ("invalid parameter %qs", name); } /* Set the value of the parameter given by NUM to VALUE in PARAMS and PARAMS_SET, implicitly, if it has not been set explicitly by the user. */ void maybe_set_param_value (compiler_param num, int value, int *params, int *params_set) { if (!params_set[(int) num]) set_param_value_internal (num, value, params, params_set, false); } /* Set the default value of a parameter given by NUM to VALUE, before option processing. */ void set_default_param_value (compiler_param num, int value) { gcc_assert (!params_finished); compiler_params[(int) num].default_value = value; } /* Return the default value of parameter NUM. */ int default_param_value (compiler_param num) { return compiler_params[(int) num].default_value; } /* Initialize an array PARAMS with default values of the parameters. */ void init_param_values (int *params) { size_t i; gcc_assert (params_finished); for (i = 0; i < num_compiler_params; i++) params[i] = compiler_params[i].default_value; } /* Return the current value of num_compiler_params, for the benefit of plugins that use parameters as features. */ size_t get_num_compiler_params (void) { return num_compiler_params; }
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