From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/params.c | 173 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 173 insertions(+) create mode 100644 gcc/params.c (limited to 'gcc/params.c') diff --git a/gcc/params.c b/gcc/params.c new file mode 100644 index 000000000..95af6cec0 --- /dev/null +++ b/gcc/params.c @@ -0,0 +1,173 @@ +/* params.c - Run-time parameters. + Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008, 2009, 2010 + Free Software Foundation, Inc. + Written by Mark Mitchell . + +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 +. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tm.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; + +/* 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; +} + +/* 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; +} -- cgit v1.2.3