1 /* Common hooks for DEC Alpha.
2 Copyright (C) 1992-2020 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
19
20 #include "config.h"
21 #include "system.h"
22 #include "coretypes.h"
23 #include "diagnostic-core.h"
24 #include "tm.h"
25 #include "common/common-target.h"
26 #include "common/common-target-def.h"
27 #include "opts.h"
28 #include "flags.h"
29
30 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
31 static const struct default_options alpha_option_optimization_table[] =
32 {
33 /* Enable redundant extension instructions removal at -O2 and higher. */
34 { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },
35 { OPT_LEVELS_NONE, 0, NULL, 0 }
36 };
37
38 /* Implement TARGET_OPTION_INIT_STRUCT. */
39
40 static void
alpha_option_init_struct(struct gcc_options * opts ATTRIBUTE_UNUSED)41 alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED)
42 {
43 #if TARGET_ABI_OPEN_VMS
44 /* Enable section anchors by default. */
45 opts->x_flag_section_anchors = 1;
46 #endif
47 }
48
49 /* Implement TARGET_HANDLE_OPTION. */
50
51 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)52 alpha_handle_option (struct gcc_options *opts,
53 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
54 const struct cl_decoded_option *decoded,
55 location_t loc)
56 {
57 size_t code = decoded->opt_index;
58 const char *arg = decoded->arg;
59 int value = decoded->value;
60
61 switch (code)
62 {
63 case OPT_mfp_regs:
64 if (value == 0)
65 opts->x_target_flags |= MASK_SOFT_FP;
66 break;
67
68 case OPT_mieee:
69 case OPT_mieee_with_inexact:
70 opts->x_target_flags |= MASK_IEEE_CONFORMANT;
71 break;
72
73 case OPT_mtls_size_:
74 if (value != 16 && value != 32 && value != 64)
75 error_at (loc, "bad value %qs for %<-mtls-size%> switch", arg);
76 break;
77 }
78
79 return true;
80 }
81
82 #undef TARGET_DEFAULT_TARGET_FLAGS
83 #define TARGET_DEFAULT_TARGET_FLAGS \
84 (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS)
85 #undef TARGET_HANDLE_OPTION
86 #define TARGET_HANDLE_OPTION alpha_handle_option
87
88 #undef TARGET_OPTION_INIT_STRUCT
89 #define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct
90
91 #undef TARGET_OPTION_OPTIMIZATION_TABLE
92 #define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table
93
94 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
95