1 /* Common hooks for Synopsys DesignWare ARC
2 Copyright (C) 1994-2020 Free Software Foundation, Inc.
3 Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
4 on behalf of Synopsys Inc.
5 Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
22
23 #include "config.h"
24 #include "system.h"
25 #include "coretypes.h"
26 #include "diagnostic-core.h"
27 #include "tm.h"
28 #include "common/common-target.h"
29 #include "opts.h"
30 #include "flags.h"
31
32 static void
arc_option_init_struct(struct gcc_options * opts)33 arc_option_init_struct (struct gcc_options *opts)
34 {
35 opts->x_flag_no_common = 255; /* Mark as not user-initialized. */
36
37 /* Which cpu we're compiling for (ARC600, ARC601, ARC700, ARCv2). */
38 arc_cpu = PROCESSOR_NONE;
39 }
40
41 /* Set default optimization options. */
42 /* The conditions are incomplete, so we rely on the evaluation order here,
43 which goes from first to last, i.e. the last match prevails. */
44 /* ??? But this trick only works for reject_negative options. Approximate
45 missing option combination. */
46 #define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS
47 static const struct default_options arc_option_optimization_table[] =
48 {
49 { OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 },
50 { OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 },
51 { OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 },
52 { OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 },
53 { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
54 { OPT_LEVELS_SIZE, OPT_ftree_loop_optimize, NULL, 0},
55 { OPT_LEVELS_SIZE, OPT_fmove_loop_invariants, NULL, 0},
56 { OPT_LEVELS_SIZE, OPT_fbranch_count_reg, NULL, 0},
57 { OPT_LEVELS_SIZE, OPT_fdelayed_branch, NULL, 0 },
58 { OPT_LEVELS_SIZE, OPT_fsection_anchors, NULL, 1 },
59 { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
60 { OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 },
61 { OPT_LEVELS_SIZE, OPT_mmillicode, NULL, 1 },
62 { OPT_LEVELS_SIZE, OPT_fif_conversion, NULL, 0 },
63 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
64 { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 },
65 { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 },
66 { OPT_LEVELS_NONE, 0, NULL, 0 }
67 };
68
69 /* Process options. */
70 static bool
arc_handle_option(struct gcc_options * opts,struct gcc_options * opts_set ATTRIBUTE_UNUSED,const struct cl_decoded_option * decoded,location_t loc)71 arc_handle_option (struct gcc_options *opts,
72 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
73 const struct cl_decoded_option *decoded,
74 location_t loc)
75 {
76 size_t code = decoded->opt_index;
77 int value = decoded->value;
78 static int mcpu_seen = PROCESSOR_NONE;
79
80 switch (code)
81 {
82 case OPT_mcpu_:
83 /* N.B., at this point arc_cpu has already been set to its new value by
84 our caller, so comparing arc_cpu with PROCESSOR_NONE is pointless. */
85
86 if (mcpu_seen != PROCESSOR_NONE && mcpu_seen != value)
87 warning_at (loc, 0, "multiple %<-mcpu=%> options specified.");
88 mcpu_seen = value;
89 break;
90
91 case OPT_mmpy_option_:
92 if (opts->x_arc_mpy_option == 1)
93 warning_at (loc, 0, "Unsupported value for mmpy-option");
94 break;
95
96 default:
97 break;
98 }
99
100 return true;
101 }
102
103 #undef TARGET_OPTION_INIT_STRUCT
104 #define TARGET_OPTION_INIT_STRUCT arc_option_init_struct
105
106 #undef TARGET_OPTION_OPTIMIZATION_TABLE
107 #define TARGET_OPTION_OPTIMIZATION_TABLE arc_option_optimization_table
108
109 #define DEFAULT_NO_SDATA (TARGET_SDATA_DEFAULT ? 0 : MASK_NO_SDATA_SET)
110
111 #undef TARGET_DEFAULT_TARGET_FLAGS
112 #define TARGET_DEFAULT_TARGET_FLAGS (DEFAULT_NO_SDATA | MASK_VOLATILE_CACHE_SET)
113
114 #undef TARGET_HANDLE_OPTION
115 #define TARGET_HANDLE_OPTION arc_handle_option
116
117 #include "common/common-target-def.h"
118
119 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
120