Mercurial > hg > CbC > CbC_gcc

comparison gcc/config/spu/spu-c.c @ 0:a06113de4d67

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children 58ad6c70ea60
comparison
equal deleted inserted replaced
-1:000000000000 0:a06113de4d67
1 /* Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
2
3 This file is free software; you can redistribute it and/or modify it under
4 the terms of the GNU General Public License as published by the Free
5 Software Foundation; either version 3 of the License, or (at your option)
6 any later version.
7
8 This file is distributed in the hope that it will be useful, but WITHOUT
9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with GCC; see the file COPYING3. If not see
15 <http://www.gnu.org/licenses/>. */
16
17 #include "config.h"
18 #include "system.h"
19 #include "coretypes.h"
20 #include "tm.h"
21 #include "cpplib.h"
22 #include "tree.h"
23 #include "c-tree.h"
24 #include "c-pragma.h"
25 #include "function.h"
26 #include "rtl.h"
27 #include "expr.h"
28 #include "errors.h"
29 #include "tm_p.h"
30 #include "langhooks.h"
31 #include "insn-config.h"
32 #include "insn-codes.h"
33 #include "recog.h"
34 #include "optabs.h"
35 #include "spu-builtins.h"
36
37
38 /* Keep the vector keywords handy for fast comparisons. */
39 static GTY(()) tree __vector_keyword;
40 static GTY(()) tree vector_keyword;
41
42 static cpp_hashnode *
43 spu_categorize_keyword (const cpp_token *tok)
44 {
45 if (tok->type == CPP_NAME)
46 {
47 cpp_hashnode *ident = tok->val.node;
48
49 if (ident == C_CPP_HASHNODE (vector_keyword)
50 || ident == C_CPP_HASHNODE (__vector_keyword))
51 return C_CPP_HASHNODE (__vector_keyword);
52 else
53 return ident;
54 }
55 return 0;
56 }
57
58 /* Called to decide whether a conditional macro should be expanded.
59 Since we have exactly one such macro (i.e, 'vector'), we do not
60 need to examine the 'tok' parameter. */
61
62 static cpp_hashnode *
63 spu_macro_to_expand (cpp_reader *pfile, const cpp_token *tok)
64 {
65 cpp_hashnode *expand_this = tok->val.node;
66 cpp_hashnode *ident;
67
68 ident = spu_categorize_keyword (tok);
69 if (ident == C_CPP_HASHNODE (__vector_keyword))
70 {
71 tok = cpp_peek_token (pfile, 0);
72 ident = spu_categorize_keyword (tok);
73
74 if (ident)
75 {
76 enum rid rid_code = (enum rid)(ident->rid_code);
77 if (ident->type == NT_MACRO)
78 {
79 (void) cpp_get_token (pfile);
80 tok = cpp_peek_token (pfile, 0);
81 ident = spu_categorize_keyword (tok);
82 if (ident)
83 rid_code = (enum rid)(ident->rid_code);
84 }
85
86 if (rid_code == RID_UNSIGNED || rid_code == RID_LONG
87 || rid_code == RID_SHORT || rid_code == RID_SIGNED
88 || rid_code == RID_INT || rid_code == RID_CHAR
89 || rid_code == RID_FLOAT || rid_code == RID_DOUBLE)
90 expand_this = C_CPP_HASHNODE (__vector_keyword);
91 }
92 }
93 return expand_this;
94 }
95
96 /* target hook for resolve_overloaded_builtin(). Returns a function call
97 RTX if we can resolve the overloaded builtin */
98 tree
99 spu_resolve_overloaded_builtin (tree fndecl, tree fnargs)
100 {
101 #define SCALAR_TYPE_P(t) (INTEGRAL_TYPE_P (t) \
102 || SCALAR_FLOAT_TYPE_P (t) \
103 || POINTER_TYPE_P (t))
104 spu_function_code new_fcode, fcode =
105 DECL_FUNCTION_CODE (fndecl) - END_BUILTINS;
106 struct spu_builtin_description *desc;
107 tree match = NULL_TREE;
108
109 /* The vector types are not available if the backend is not initialized. */
110 gcc_assert (!flag_preprocess_only);
111
112 desc = &spu_builtins[fcode];
113 if (desc->type != B_OVERLOAD)
114 return NULL_TREE;
115
116 /* Compare the signature of each internal builtin function with the
117 function arguments until a match is found. */
118
119 for (new_fcode = fcode + 1; spu_builtins[new_fcode].type == B_INTERNAL;
120 new_fcode++)
121 {
122 tree decl = spu_builtins[new_fcode].fndecl;
123 tree params = TYPE_ARG_TYPES (TREE_TYPE (decl));
124 tree arg, param;
125 int p;
126
127 for (param = params, arg = fnargs, p = 0;
128 param != void_list_node;
129 param = TREE_CHAIN (param), arg = TREE_CHAIN (arg), p++)
130 {
131 tree var, arg_type, param_type = TREE_VALUE (param);
132
133 if (!arg)
134 {
135 error ("insufficient arguments to overloaded function %s",
136 desc->name);
137 return error_mark_node;
138 }
139
140 var = TREE_VALUE (arg);
141
142 if (TREE_CODE (var) == NON_LVALUE_EXPR)
143 var = TREE_OPERAND (var, 0);
144
145 if (TREE_CODE (var) == ERROR_MARK)
146 return NULL_TREE; /* Let somebody else deal with the problem. */
147
148 arg_type = TREE_TYPE (var);
149
150 /* The intrinsics spec does not specify precisely how to
151 resolve generic intrinsics. We require an exact match
152 for vector types and let C do it's usual parameter type
153 checking/promotions for scalar arguments, except for the
154 first argument of intrinsics which don't have a vector
155 parameter. */
156 if ((!SCALAR_TYPE_P (param_type)
157 || !SCALAR_TYPE_P (arg_type)
158 || ((fcode == SPU_SPLATS || fcode == SPU_PROMOTE
159 || fcode == SPU_HCMPEQ || fcode == SPU_HCMPGT
160 || fcode == SPU_MASKB || fcode == SPU_MASKH
161 || fcode == SPU_MASKW) && p == 0))
162 && !comptypes (TYPE_MAIN_VARIANT (param_type),
163 TYPE_MAIN_VARIANT (arg_type)))
164 break;
165 }
166 if (param == void_list_node)
167 {
168 if (arg)
169 {
170 error ("too many arguments to overloaded function %s",
171 desc->name);
172 return error_mark_node;
173 }
174
175 match = decl;
176 break;
177 }
178 }
179
180 if (match == NULL_TREE)
181 {
182 error ("parameter list does not match a valid signature for %s()",
183 desc->name);
184 return error_mark_node;
185 }
186
187 return build_function_call (match, fnargs);
188 #undef SCALAR_TYPE_P
189 }
190
191
192 void
193 spu_cpu_cpp_builtins (struct cpp_reader *pfile)
194 {
195 builtin_define_std ("__SPU__");
196 cpp_assert (pfile, "cpu=spu");
197 cpp_assert (pfile, "machine=spu");
198 if (spu_arch == PROCESSOR_CELLEDP)
199 builtin_define_std ("__SPU_EDP__");
200 builtin_define_std ("__vector=__attribute__((__spu_vector__))");
201
202 if (!flag_iso)
203 {
204 /* Define this when supporting context-sensitive keywords. */
205 cpp_define (pfile, "__VECTOR_KEYWORD_SUPPORTED__");
206 cpp_define (pfile, "vector=vector");
207
208 /* Initialize vector keywords. */
209 __vector_keyword = get_identifier ("__vector");
210 C_CPP_HASHNODE (__vector_keyword)->flags |= NODE_CONDITIONAL;
211 vector_keyword = get_identifier ("vector");
212 C_CPP_HASHNODE (vector_keyword)->flags |= NODE_CONDITIONAL;
213
214 /* Enable context-sensitive macros. */
215 cpp_get_callbacks (pfile)->macro_to_expand = spu_macro_to_expand;
216 }
217 }
218
219 void
220 spu_c_common_override_options (void)
221 {
222 if (!TARGET_STD_MAIN)
223 {
224 /* Don't give warnings about the main() function. */
225 warn_main = 0;
226 }
227 }