|
111
|
1 /* Common hooks for IBM RS/6000.
|
|
131
|
2 Copyright (C) 1991-2018 Free Software Foundation, Inc.
|
|
111
|
3
|
|
|
4 This file is part of GCC.
|
|
|
5
|
|
|
6 GCC is free software; you can redistribute it and/or modify it
|
|
|
7 under the terms of the GNU General Public License as published
|
|
|
8 by the Free Software Foundation; either version 3, or (at your
|
|
|
9 option) any later version.
|
|
|
10
|
|
|
11 GCC is distributed in the hope that it will be useful, but WITHOUT
|
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
|
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
|
|
14 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 #include "params.h"
|
|
|
30
|
|
|
31 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
|
|
|
32 static const struct default_options rs6000_option_optimization_table[] =
|
|
|
33 {
|
|
|
34 /* Enable -fsched-pressure for first pass instruction scheduling. */
|
|
|
35 { OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 },
|
|
|
36 { OPT_LEVELS_NONE, 0, NULL, 0 }
|
|
|
37 };
|
|
|
38
|
|
|
39 /* Implement TARGET_OPTION_INIT_STRUCT. */
|
|
|
40
|
|
|
41 static void
|
|
|
42 rs6000_option_init_struct (struct gcc_options *opts)
|
|
|
43 {
|
|
|
44 if (DEFAULT_ABI == ABI_DARWIN)
|
|
|
45 /* The Darwin libraries never set errno, so we might as well
|
|
|
46 avoid calling them when that's the only reason we would. */
|
|
|
47 opts->x_flag_errno_math = 0;
|
|
|
48
|
|
|
49 /* Enable section anchors by default. */
|
|
|
50 if (!TARGET_MACHO)
|
|
|
51 opts->x_flag_section_anchors = 1;
|
|
|
52 }
|
|
|
53
|
|
|
54 /* Implement TARGET_OPTION_DEFAULT_PARAMS. */
|
|
|
55
|
|
|
56 static void
|
|
|
57 rs6000_option_default_params (void)
|
|
|
58 {
|
|
|
59 /* Double growth factor to counter reduced min jump length. */
|
|
|
60 set_default_param_value (PARAM_MAX_GROW_COPY_BB_INSNS, 16);
|
|
|
61 }
|
|
|
62
|
|
|
63 /* If not otherwise specified by a target, make 'long double' equivalent to
|
|
|
64 'double'. */
|
|
|
65
|
|
|
66 #ifndef RS6000_DEFAULT_LONG_DOUBLE_SIZE
|
|
|
67 #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 64
|
|
|
68 #endif
|
|
|
69
|
|
|
70 /* Implement TARGET_HANDLE_OPTION. */
|
|
|
71
|
|
|
72 static bool
|
|
|
73 rs6000_handle_option (struct gcc_options *opts, struct gcc_options *opts_set,
|
|
|
74 const struct cl_decoded_option *decoded,
|
|
|
75 location_t loc)
|
|
|
76 {
|
|
|
77 enum fpu_type_t fpu_type = FPU_NONE;
|
|
|
78 char *p, *q;
|
|
|
79 size_t code = decoded->opt_index;
|
|
|
80 const char *arg = decoded->arg;
|
|
|
81 int value = decoded->value;
|
|
|
82
|
|
|
83 switch (code)
|
|
|
84 {
|
|
|
85 case OPT_mfull_toc:
|
|
|
86 opts->x_rs6000_isa_flags &= ~OPTION_MASK_MINIMAL_TOC;
|
|
|
87 opts->x_TARGET_NO_FP_IN_TOC = 0;
|
|
|
88 opts->x_TARGET_NO_SUM_IN_TOC = 0;
|
|
|
89 opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
90 #ifdef TARGET_USES_SYSV4_OPT
|
|
|
91 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be
|
|
|
92 just the same as -mminimal-toc. */
|
|
|
93 opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
94 opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
95 #endif
|
|
|
96 break;
|
|
|
97
|
|
|
98 #ifdef TARGET_USES_SYSV4_OPT
|
|
|
99 case OPT_mtoc:
|
|
|
100 /* Make -mtoc behave like -mminimal-toc. */
|
|
|
101 opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
102 opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
103 break;
|
|
|
104 #endif
|
|
|
105
|
|
|
106 #ifdef TARGET_USES_AIX64_OPT
|
|
|
107 case OPT_maix64:
|
|
|
108 #else
|
|
|
109 case OPT_m64:
|
|
|
110 #endif
|
|
|
111 opts->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
|
|
|
112 opts->x_rs6000_isa_flags |= (~opts_set->x_rs6000_isa_flags
|
|
|
113 & OPTION_MASK_PPC_GFXOPT);
|
|
|
114 opts_set->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
|
|
|
115 break;
|
|
|
116
|
|
|
117 #ifdef TARGET_USES_AIX64_OPT
|
|
|
118 case OPT_maix32:
|
|
|
119 #else
|
|
|
120 case OPT_m32:
|
|
|
121 #endif
|
|
|
122 opts->x_rs6000_isa_flags &= ~OPTION_MASK_POWERPC64;
|
|
|
123 opts_set->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
|
|
|
124 break;
|
|
|
125
|
|
|
126 case OPT_mminimal_toc:
|
|
|
127 if (value == 1)
|
|
|
128 {
|
|
|
129 opts->x_TARGET_NO_FP_IN_TOC = 0;
|
|
|
130 opts->x_TARGET_NO_SUM_IN_TOC = 0;
|
|
|
131 }
|
|
|
132 break;
|
|
|
133
|
|
|
134 case OPT_mpowerpc_gpopt:
|
|
|
135 case OPT_mpowerpc_gfxopt:
|
|
|
136 break;
|
|
|
137
|
|
|
138 case OPT_mdebug_:
|
|
|
139 p = ASTRDUP (arg);
|
|
|
140 opts->x_rs6000_debug = 0;
|
|
|
141
|
|
|
142 while ((q = strtok (p, ",")) != NULL)
|
|
|
143 {
|
|
|
144 unsigned mask = 0;
|
|
|
145 bool invert;
|
|
|
146
|
|
|
147 p = NULL;
|
|
|
148 if (*q == '!')
|
|
|
149 {
|
|
|
150 invert = true;
|
|
|
151 q++;
|
|
|
152 }
|
|
|
153 else
|
|
|
154 invert = false;
|
|
|
155
|
|
|
156 if (! strcmp (q, "all"))
|
|
|
157 mask = MASK_DEBUG_ALL;
|
|
|
158 else if (! strcmp (q, "stack"))
|
|
|
159 mask = MASK_DEBUG_STACK;
|
|
|
160 else if (! strcmp (q, "arg"))
|
|
|
161 mask = MASK_DEBUG_ARG;
|
|
|
162 else if (! strcmp (q, "reg"))
|
|
|
163 mask = MASK_DEBUG_REG;
|
|
|
164 else if (! strcmp (q, "addr"))
|
|
|
165 mask = MASK_DEBUG_ADDR;
|
|
|
166 else if (! strcmp (q, "cost"))
|
|
|
167 mask = MASK_DEBUG_COST;
|
|
|
168 else if (! strcmp (q, "target"))
|
|
|
169 mask = MASK_DEBUG_TARGET;
|
|
|
170 else if (! strcmp (q, "builtin"))
|
|
|
171 mask = MASK_DEBUG_BUILTIN;
|
|
|
172 else
|
|
|
173 error_at (loc, "unknown -mdebug-%s switch", q);
|
|
|
174
|
|
|
175 if (invert)
|
|
|
176 opts->x_rs6000_debug &= ~mask;
|
|
|
177 else
|
|
|
178 opts->x_rs6000_debug |= mask;
|
|
|
179 }
|
|
|
180 break;
|
|
|
181
|
|
|
182 #ifdef TARGET_USES_SYSV4_OPT
|
|
|
183 case OPT_mrelocatable:
|
|
|
184 if (value == 1)
|
|
|
185 {
|
|
|
186 opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
187 opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
|
|
|
188 opts->x_TARGET_NO_FP_IN_TOC = 1;
|
|
|
189 }
|
|
|
190 break;
|
|
|
191
|
|
|
192 case OPT_mrelocatable_lib:
|
|
|
193 if (value == 1)
|
|
|
194 {
|
|
|
195 opts->x_rs6000_isa_flags |= (OPTION_MASK_RELOCATABLE
|
|
|
196 | OPTION_MASK_MINIMAL_TOC);
|
|
|
197 opts_set->x_rs6000_isa_flags |= (OPTION_MASK_RELOCATABLE
|
|
|
198 | OPTION_MASK_MINIMAL_TOC);
|
|
|
199 opts->x_TARGET_NO_FP_IN_TOC = 1;
|
|
|
200 }
|
|
|
201 else
|
|
|
202 {
|
|
|
203 opts->x_rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE;
|
|
|
204 opts_set->x_rs6000_isa_flags |= OPTION_MASK_RELOCATABLE;
|
|
|
205 }
|
|
|
206 break;
|
|
|
207 #endif
|
|
|
208
|
|
|
209 case OPT_mabi_altivec:
|
|
|
210 /* Enabling the AltiVec ABI turns off the SPE ABI. */
|
|
|
211 opts->x_rs6000_spe_abi = 0;
|
|
|
212 break;
|
|
|
213
|
|
|
214 case OPT_mabi_spe:
|
|
|
215 opts->x_rs6000_altivec_abi = 0;
|
|
|
216 break;
|
|
|
217
|
|
|
218 case OPT_mlong_double_:
|
|
|
219 if (value != 64 && value != 128)
|
|
|
220 {
|
|
|
221 error_at (loc, "unknown switch -mlong-double-%s", arg);
|
|
|
222 opts->x_rs6000_long_double_type_size
|
|
|
223 = RS6000_DEFAULT_LONG_DOUBLE_SIZE;
|
|
|
224 return false;
|
|
|
225 }
|
|
|
226 break;
|
|
|
227
|
|
|
228 case OPT_msingle_float:
|
|
|
229 if (!TARGET_SINGLE_FPU)
|
|
|
230 warning_at (loc, 0,
|
|
|
231 "-msingle-float option equivalent to -mhard-float");
|
|
|
232 /* -msingle-float implies -mno-double-float and TARGET_HARD_FLOAT. */
|
|
|
233 opts->x_rs6000_double_float = 0;
|
|
|
234 opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
|
|
|
235 opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
|
|
|
236 break;
|
|
|
237
|
|
|
238 case OPT_mdouble_float:
|
|
|
239 /* -mdouble-float implies -msingle-float and TARGET_HARD_FLOAT. */
|
|
|
240 opts->x_rs6000_single_float = 1;
|
|
|
241 opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
|
|
|
242 opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
|
|
|
243 break;
|
|
|
244
|
|
|
245 case OPT_msimple_fpu:
|
|
|
246 if (!TARGET_SINGLE_FPU)
|
|
|
247 warning_at (loc, 0, "-msimple-fpu option ignored");
|
|
|
248 break;
|
|
|
249
|
|
|
250 case OPT_mhard_float:
|
|
|
251 /* -mhard_float implies -msingle-float and -mdouble-float. */
|
|
|
252 opts->x_rs6000_single_float = opts->x_rs6000_double_float = 1;
|
|
|
253 break;
|
|
|
254
|
|
|
255 case OPT_msoft_float:
|
|
|
256 /* -msoft_float implies -mnosingle-float and -mnodouble-float. */
|
|
|
257 opts->x_rs6000_single_float = opts->x_rs6000_double_float = 0;
|
|
|
258 break;
|
|
|
259
|
|
|
260 case OPT_mfpu_:
|
|
|
261 fpu_type = (enum fpu_type_t) value;
|
|
|
262 if (fpu_type != FPU_NONE)
|
|
|
263 {
|
|
|
264 /* If -mfpu is not none, then turn off SOFT_FLOAT, turn on
|
|
|
265 HARD_FLOAT. */
|
|
|
266 opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
|
|
|
267 opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
|
|
|
268 opts->x_rs6000_xilinx_fpu = 1;
|
|
|
269 if (fpu_type == FPU_SF_LITE || fpu_type == FPU_SF_FULL)
|
|
|
270 opts->x_rs6000_single_float = 1;
|
|
|
271 if (fpu_type == FPU_DF_LITE || fpu_type == FPU_DF_FULL)
|
|
|
272 opts->x_rs6000_single_float = opts->x_rs6000_double_float = 1;
|
|
|
273 if (fpu_type == FPU_SF_LITE || fpu_type == FPU_DF_LITE)
|
|
|
274 opts->x_rs6000_simple_fpu = 1;
|
|
|
275 }
|
|
|
276 else
|
|
|
277 {
|
|
|
278 /* -mfpu=none is equivalent to -msoft-float. */
|
|
|
279 opts->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
|
|
|
280 opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
|
|
|
281 opts->x_rs6000_single_float = opts->x_rs6000_double_float = 0;
|
|
|
282 }
|
|
|
283 break;
|
|
|
284
|
|
|
285 case OPT_mrecip:
|
|
|
286 opts->x_rs6000_recip_name = (value) ? "default" : "none";
|
|
|
287 break;
|
|
|
288 }
|
|
|
289 return true;
|
|
|
290 }
|
|
|
291
|
|
|
292 /* -fsplit-stack uses a field in the TCB, available with glibc-2.19.
|
|
|
293 We also allow 2.18 because alignment padding guarantees that the
|
|
|
294 space is available there too. */
|
|
|
295
|
|
|
296 static bool
|
|
|
297 rs6000_supports_split_stack (bool report,
|
|
|
298 struct gcc_options *opts ATTRIBUTE_UNUSED)
|
|
|
299 {
|
|
|
300 #ifndef TARGET_GLIBC_MAJOR
|
|
|
301 #define TARGET_GLIBC_MAJOR 0
|
|
|
302 #endif
|
|
|
303 #ifndef TARGET_GLIBC_MINOR
|
|
|
304 #define TARGET_GLIBC_MINOR 0
|
|
|
305 #endif
|
|
|
306 /* Note: Can't test DEFAULT_ABI here, it isn't set until later. */
|
|
|
307 if (TARGET_GLIBC_MAJOR * 1000 + TARGET_GLIBC_MINOR >= 2018
|
|
|
308 && TARGET_64BIT
|
|
|
309 && TARGET_ELF)
|
|
|
310 return true;
|
|
|
311
|
|
|
312 if (report)
|
|
|
313 error ("%<-fsplit-stack%> currently only supported on PowerPC64 GNU/Linux with glibc-2.18 or later");
|
|
|
314 return false;
|
|
|
315 }
|
|
|
316
|
|
|
317 #undef TARGET_HANDLE_OPTION
|
|
|
318 #define TARGET_HANDLE_OPTION rs6000_handle_option
|
|
|
319
|
|
|
320 #undef TARGET_OPTION_INIT_STRUCT
|
|
|
321 #define TARGET_OPTION_INIT_STRUCT rs6000_option_init_struct
|
|
|
322
|
|
|
323 #undef TARGET_OPTION_DEFAULT_PARAMS
|
|
|
324 #define TARGET_OPTION_DEFAULT_PARAMS rs6000_option_default_params
|
|
|
325
|
|
|
326 #undef TARGET_OPTION_OPTIMIZATION_TABLE
|
|
|
327 #define TARGET_OPTION_OPTIMIZATION_TABLE rs6000_option_optimization_table
|
|
|
328
|
|
|
329 #undef TARGET_SUPPORTS_SPLIT_STACK
|
|
|
330 #define TARGET_SUPPORTS_SPLIT_STACK rs6000_supports_split_stack
|
|
|
331
|
|
|
332 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
|
