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comparison gcc/config/nvptx/nvptx.h @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* Target Definitions for NVPTX.
2 Copyright (C) 2014-2017 Free Software Foundation, Inc.
3 Contributed by Bernd Schmidt <bernds@codesourcery.com>
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 #ifndef GCC_NVPTX_H
22 #define GCC_NVPTX_H
23
24 /* Run-time Target. */
25
26 #define STARTFILE_SPEC "%{mmainkernel:crt0.o}"
27
28 #define TARGET_CPU_CPP_BUILTINS() \
29 do \
30 { \
31 builtin_assert ("machine=nvptx"); \
32 builtin_assert ("cpu=nvptx"); \
33 builtin_define ("__nvptx__"); \
34 if (TARGET_SOFT_STACK) \
35 builtin_define ("__nvptx_softstack__"); \
36 if (TARGET_UNIFORM_SIMT) \
37 builtin_define ("__nvptx_unisimt__"); \
38 } while (0)
39
40 /* Avoid the default in ../../gcc.c, which adds "-pthread", which is not
41 supported for nvptx. */
42 #define GOMP_SELF_SPECS ""
43
44 /* Storage Layout. */
45
46 #define BITS_BIG_ENDIAN 0
47 #define BYTES_BIG_ENDIAN 0
48 #define WORDS_BIG_ENDIAN 0
49
50 /* Chosen such that we won't have to deal with multi-word subregs. */
51 #define UNITS_PER_WORD 8
52
53 /* Alignments in bits. */
54 #define PARM_BOUNDARY 32
55 #define STACK_BOUNDARY 128
56 #define FUNCTION_BOUNDARY 32
57 #define BIGGEST_ALIGNMENT 128
58 #define STRICT_ALIGNMENT 1
59
60 #define MAX_STACK_ALIGNMENT (1024 * 8)
61
62 #define DATA_ALIGNMENT nvptx_data_alignment
63
64 /* Copied from elf.h and other places. We'd otherwise use
65 BIGGEST_ALIGNMENT and fail a number of testcases. */
66 #define MAX_OFILE_ALIGNMENT (32768 * 8)
67
68 /* Type Layout. */
69
70 #define DEFAULT_SIGNED_CHAR 1
71
72 #define SHORT_TYPE_SIZE 16
73 #define INT_TYPE_SIZE 32
74 #define LONG_TYPE_SIZE (TARGET_ABI64 ? 64 : 32)
75 #define LONG_LONG_TYPE_SIZE 64
76 #define FLOAT_TYPE_SIZE 32
77 #define DOUBLE_TYPE_SIZE 64
78 #define LONG_DOUBLE_TYPE_SIZE 64
79 #define TARGET_SUPPORTS_WIDE_INT 1
80
81 #undef SIZE_TYPE
82 #define SIZE_TYPE (TARGET_ABI64 ? "long unsigned int" : "unsigned int")
83 #undef PTRDIFF_TYPE
84 #define PTRDIFF_TYPE (TARGET_ABI64 ? "long int" : "int")
85
86 #define POINTER_SIZE (TARGET_ABI64 ? 64 : 32)
87 #define Pmode (TARGET_ABI64 ? DImode : SImode)
88 #define STACK_SIZE_MODE Pmode
89
90 /* Registers. Since ptx is a virtual target, we just define a few
91 hard registers for special purposes and leave pseudos unallocated.
92 We have to have some available hard registers, to keep gcc setup
93 happy. */
94 #define FIRST_PSEUDO_REGISTER 16
95 #define FIXED_REGISTERS { 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
96 #define CALL_USED_REGISTERS { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
97
98 /* Register Classes. */
99 enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES };
100 #define REG_CLASS_NAMES { "NO_REGS", "ALL_REGS" }
101 #define REG_CLASS_CONTENTS { { 0x0000 }, { 0xFFFF } }
102 #define N_REG_CLASSES (int) LIM_REG_CLASSES
103
104 #define GENERAL_REGS ALL_REGS
105 #define REGNO_REG_CLASS(R) ((void)(R), ALL_REGS)
106 #define BASE_REG_CLASS ALL_REGS
107 #define INDEX_REG_CLASS NO_REGS
108
109 #define REGNO_OK_FOR_BASE_P(X) true
110 #define REGNO_OK_FOR_INDEX_P(X) false
111
112 #define CLASS_MAX_NREGS(class, mode) \
113 ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
114
115 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
116 if ((MODE) == QImode || (MODE) == HImode) \
117 { \
118 (MODE) = SImode; \
119 (void)(UNSIGNEDP); \
120 (void)(TYPE); \
121 }
122
123 /* Stack and Calling. */
124
125 #define FRAME_GROWS_DOWNWARD 0
126 #define STACK_GROWS_DOWNWARD 1
127
128 #define NVPTX_RETURN_REGNUM 0
129 #define STACK_POINTER_REGNUM 1
130 #define FRAME_POINTER_REGNUM 2
131 #define ARG_POINTER_REGNUM 3
132 #define STATIC_CHAIN_REGNUM 4
133 /* This register points to the shared memory location with the current warp's
134 soft stack pointer (__nvptx_stacks[tid.y]). */
135 #define SOFTSTACK_SLOT_REGNUM 5
136 /* This register is used to save the previous value of the soft stack pointer
137 in the prologue and restore it when returning. */
138 #define SOFTSTACK_PREV_REGNUM 6
139
140 #define REGISTER_NAMES \
141 { \
142 "%value", "%stack", "%frame", "%args", \
143 "%chain", "%sspslot", "%sspprev", "%hr7", \
144 "%hr8", "%hr9", "%hr10", "%hr11", "%hr12", "%hr13", "%hr14", "%hr15" \
145 }
146
147 #define FIRST_PARM_OFFSET(FNDECL) ((void)(FNDECL), 0)
148 #define PUSH_ARGS_REVERSED 1
149 #define ACCUMULATE_OUTGOING_ARGS 1
150
151 /* Avoid using the argument pointer for frame-related things. */
152 #define FRAME_POINTER_CFA_OFFSET(FNDECL) ((void)(FNDECL), 0)
153
154 #ifdef HOST_WIDE_INT
155 struct nvptx_args {
156 tree fntype;
157 /* Number of arguments passed in registers so far. */
158 int count;
159 };
160 #endif
161
162 #define CUMULATIVE_ARGS struct nvptx_args
163
164 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
165 ((CUM).fntype = (FNTYPE), (CUM).count = 0, (void)0)
166
167 #define FUNCTION_ARG_REGNO_P(r) 0
168
169 #define DEFAULT_PCC_STRUCT_RETURN 0
170
171 #define FUNCTION_PROFILER(file, labelno) \
172 fatal_error (input_location, \
173 "profiling is not yet implemented for this architecture")
174
175 #define TRAMPOLINE_SIZE 32
176 #define TRAMPOLINE_ALIGNMENT 256
177
178 /* We don't run reload, so this isn't actually used, but it still needs to be
179 defined. Showing an argp->fp elimination also stops
180 expand_builtin_setjmp_receiver from generating invalid insns. */
181 #define ELIMINABLE_REGS \
182 { \
183 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM} \
184 }
185
186 /* Define the offset between two registers, one to be eliminated, and the other
187 its replacement, at the start of a routine. */
188
189 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
190 ((OFFSET) = 0)
191
192 /* Addressing Modes. */
193
194 #define MAX_REGS_PER_ADDRESS 1
195
196 #define LEGITIMATE_PIC_OPERAND_P(X) 1
197
198
199 #if defined HOST_WIDE_INT
200 struct GTY(()) machine_function
201 {
202 rtx_expr_list *call_args; /* Arg list for the current call. */
203 bool doing_call; /* Within a CALL_ARGS ... CALL_ARGS_END sequence. */
204 bool is_varadic; /* This call is varadic */
205 bool has_varadic; /* Current function has a varadic call. */
206 bool has_chain; /* Current function has outgoing static chain. */
207 bool has_softstack; /* Current function has a soft stack frame. */
208 bool has_simtreg; /* Current function has an OpenMP SIMD region. */
209 int num_args; /* Number of args of current call. */
210 int return_mode; /* Return mode of current fn.
211 (machine_mode not defined yet.) */
212 rtx axis_predicate[2]; /* Neutering predicates. */
213 rtx unisimt_master; /* 'Master lane index' for -muniform-simt. */
214 rtx unisimt_predicate; /* Predicate for -muniform-simt. */
215 rtx unisimt_location; /* Mask location for -muniform-simt. */
216 /* The following two fields hold the maximum size resp. alignment required
217 for per-lane storage in OpenMP SIMD regions. */
218 unsigned HOST_WIDE_INT simt_stack_size;
219 unsigned HOST_WIDE_INT simt_stack_align;
220 };
221 #endif
222
223 /* Costs. */
224
225 #define NO_FUNCTION_CSE 1
226 #define SLOW_BYTE_ACCESS 0
227 #define BRANCH_COST(speed_p, predictable_p) 6
228
229 /* Assembler Format. */
230
231 #undef ASM_DECLARE_FUNCTION_NAME
232 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
233 nvptx_declare_function_name (FILE, NAME, DECL)
234
235 #undef ASM_DECLARE_FUNCTION_SIZE
236 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
237 nvptx_function_end (STREAM)
238
239 #define DWARF2_ASM_LINE_DEBUG_INFO 1
240
241 #undef ASM_APP_ON
242 #define ASM_APP_ON "\t// #APP \n"
243 #undef ASM_APP_OFF
244 #define ASM_APP_OFF "\t// #NO_APP \n"
245
246 #define DBX_REGISTER_NUMBER(N) N
247
248 #define TEXT_SECTION_ASM_OP ""
249 #define DATA_SECTION_ASM_OP ""
250
251 #undef ASM_GENERATE_INTERNAL_LABEL
252 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
253 do \
254 { \
255 char *__p; \
256 __p = stpcpy (&(LABEL)[1], PREFIX); \
257 (LABEL)[0] = '$'; \
258 sprint_ul (__p, (unsigned long) (NUM)); \
259 } \
260 while (0)
261
262 #define ASM_OUTPUT_ALIGN(FILE, POWER) \
263 do \
264 { \
265 (void) (FILE); \
266 (void) (POWER); \
267 } \
268 while (0)
269
270 #define ASM_OUTPUT_SKIP(FILE, N) \
271 nvptx_output_skip (FILE, N)
272
273 #undef ASM_OUTPUT_ASCII
274 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
275 nvptx_output_ascii (FILE, STR, LENGTH);
276
277 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
278 nvptx_declare_object_name (FILE, NAME, DECL)
279
280 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON
281 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
282 nvptx_output_aligned_decl (FILE, NAME, DECL, SIZE, ALIGN)
283
284 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
285 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
286 nvptx_output_aligned_decl (FILE, NAME, DECL, SIZE, ALIGN)
287
288 #define CASE_VECTOR_PC_RELATIVE flag_pic
289 #define JUMP_TABLES_IN_TEXT_SECTION flag_pic
290
291 #define ADDR_VEC_ALIGN(VEC) (JUMP_TABLES_IN_TEXT_SECTION ? 5 : 2)
292
293 /* Misc. */
294
295 #define DWARF2_LINENO_DEBUGGING_INFO 1
296
297 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \
298 ((VALUE) = GET_MODE_BITSIZE ((MODE)), 2)
299 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \
300 ((VALUE) = GET_MODE_BITSIZE ((MODE)), 2)
301
302 #define SUPPORTS_WEAK 1
303 #define NO_DOT_IN_LABEL
304 #define ASM_COMMENT_START "//"
305
306 #define STORE_FLAG_VALUE -1
307 #define FLOAT_STORE_FLAG_VALUE(MODE) REAL_VALUE_ATOF("1.0", (MODE))
308
309 #define CASE_VECTOR_MODE SImode
310 #define MOVE_MAX 8
311 #define MOVE_RATIO(SPEED) 4
312 #define FUNCTION_MODE QImode
313 #define HAS_INIT_SECTION 1
314
315 /* The C++ front end insists to link against libstdc++ -- which we don't build.
316 Tell it to instead link against the innocuous libgcc. */
317 #define LIBSTDCXX "gcc"
318
319 #endif /* GCC_NVPTX_H */