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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/params.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/params.c')
-rw-r--r-- | gcc-4.9/gcc/params.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/params.c b/gcc-4.9/gcc/params.c new file mode 100644 index 000000000..3ae5ccd5c --- /dev/null +++ b/gcc-4.9/gcc/params.c @@ -0,0 +1,190 @@ +/* params.c - Run-time parameters. + Copyright (C) 2001-2014 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; +} |