diff options
Diffstat (limited to 'gcc-4.8.3/gcc/common/config/alpha/alpha-common.c')
-rw-r--r-- | gcc-4.8.3/gcc/common/config/alpha/alpha-common.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/common/config/alpha/alpha-common.c b/gcc-4.8.3/gcc/common/config/alpha/alpha-common.c new file mode 100644 index 000000000..a0c2a6bae --- /dev/null +++ b/gcc-4.8.3/gcc/common/config/alpha/alpha-common.c @@ -0,0 +1,95 @@ +/* Common hooks for DEC Alpha. + Copyright (C) 1992-2013 Free Software Foundation, Inc. + +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 "diagnostic-core.h" +#include "tm.h" +#include "common/common-target.h" +#include "common/common-target-def.h" +#include "opts.h" +#include "flags.h" + +/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ +static const struct default_options alpha_option_optimization_table[] = + { + { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, + /* Enable redundant extension instructions removal at -O2 and higher. */ + { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 }, + { OPT_LEVELS_NONE, 0, NULL, 0 } + }; + +/* Implement TARGET_OPTION_INIT_STRUCT. */ + +static void +alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED) +{ +#if TARGET_ABI_OPEN_VMS + /* Enable section anchors by default. */ + opts->x_flag_section_anchors = 1; +#endif +} + +/* Implement TARGET_HANDLE_OPTION. */ + +static bool +alpha_handle_option (struct gcc_options *opts, + struct gcc_options *opts_set ATTRIBUTE_UNUSED, + const struct cl_decoded_option *decoded, + location_t loc) +{ + size_t code = decoded->opt_index; + const char *arg = decoded->arg; + int value = decoded->value; + + switch (code) + { + case OPT_mfp_regs: + if (value == 0) + opts->x_target_flags |= MASK_SOFT_FP; + break; + + case OPT_mieee: + case OPT_mieee_with_inexact: + opts->x_target_flags |= MASK_IEEE_CONFORMANT; + break; + + case OPT_mtls_size_: + if (value != 16 && value != 32 && value != 64) + error_at (loc, "bad value %qs for -mtls-size switch", arg); + break; + } + + return true; +} + +#undef TARGET_DEFAULT_TARGET_FLAGS +#define TARGET_DEFAULT_TARGET_FLAGS \ + (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS) +#undef TARGET_HANDLE_OPTION +#define TARGET_HANDLE_OPTION alpha_handle_option + +#undef TARGET_OPTION_INIT_STRUCT +#define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct + +#undef TARGET_OPTION_OPTIMIZATION_TABLE +#define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table + +struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; |