diff options
Diffstat (limited to 'gcc-4.9/gcc/common/config/arc/arc-common.c')
| -rw-r--r-- | gcc-4.9/gcc/common/config/arc/arc-common.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/common/config/arc/arc-common.c b/gcc-4.9/gcc/common/config/arc/arc-common.c new file mode 100644 index 000000000..03986806a --- /dev/null +++ b/gcc-4.9/gcc/common/config/arc/arc-common.c @@ -0,0 +1,116 @@ +/* Common hooks for Synopsys DesignWare ARC + Copyright (C) 1994-2014 Free Software Foundation, Inc. + Contributor: Joern Rennecke <joern.rennecke@embecosm.com> + on behalf of Synopsys 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 "opts.h" +#include "flags.h" + +static void +arc_option_init_struct (struct gcc_options *opts) +{ + opts->x_flag_no_common = 255; /* Mark as not user-initialized. */ + + /* Which cpu we're compiling for (A5, ARC600, ARC601, ARC700). */ + arc_cpu = PROCESSOR_NONE; +} + +/* Set default optimization options. */ +/* The conditions are incomplete, so we rely on the evaluation order here, + which goes from first to last, i.e. the last match prevails. */ +/* ??? But this trick only works for reject_negative options. Approximate + missing option combination. */ +#define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS +static const struct default_options arc_option_optimization_table[] = + { + { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, + { OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 }, + { OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 }, + { OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 }, + { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 }, + { OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 }, + { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 }, + { OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 }, + { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 }, + { OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 }, + { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 }, + { OPT_LEVELS_SIZE, OPT_mcompact_casesi, NULL, 1 }, + { OPT_LEVELS_NONE, 0, NULL, 0 } + }; + +/* Process options. */ +static bool +arc_handle_option (struct gcc_options *opts, struct gcc_options *opts_set, + const struct cl_decoded_option *decoded, + location_t loc) +{ + size_t code = decoded->opt_index; + int value = decoded->value; + + switch (code) + { + static int mcpu_seen = PROCESSOR_NONE; + case OPT_mcpu_: + /* N.B., at this point arc_cpu has already been set to its new value by + our caller, so comparing arc_cpu with PROCESSOR_NONE is pointless. */ + + if (mcpu_seen != PROCESSOR_NONE && mcpu_seen != value) + warning_at (loc, 0, "multiple -mcpu= options specified."); + mcpu_seen = value; + + switch (value) + { + case PROCESSOR_A5: + case PROCESSOR_ARC600: + case PROCESSOR_ARC700: + if (! (opts_set->x_target_flags & MASK_BARREL_SHIFTER) ) + opts->x_target_flags |= MASK_BARREL_SHIFTER; + break; + case PROCESSOR_ARC601: + if (! (opts_set->x_target_flags & MASK_BARREL_SHIFTER) ) + opts->x_target_flags &= ~MASK_BARREL_SHIFTER; + break; + default: + gcc_unreachable (); + } + } + + return true; +} + +#define TARGET_OPTION_INIT_STRUCT arc_option_init_struct +#define TARGET_OPTION_OPTIMIZATION_TABLE arc_option_optimization_table +#define TARGET_HANDLE_OPTION arc_handle_option + +#define DEFAULT_NO_SDATA (TARGET_SDATA_DEFAULT ? 0 : MASK_NO_SDATA_SET) + +/* We default to ARC700, which has the barrel shifter enabled. */ +#define TARGET_DEFAULT_TARGET_FLAGS \ + (MASK_BARREL_SHIFTER|MASK_VOLATILE_CACHE_SET|DEFAULT_NO_SDATA) + + +#include "common/common-target-def.h" + +struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; |