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comparison src/share/vm/runtime/stubRoutines.cpp @ 1763:d6f45b55c972

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4809552: Optimize Arrays.fill(...) Reviewed-by: kvn
author never
date Fri, 27 Aug 2010 17:33:49 -0700
parents d93949c5bdcc
children 14197af1010e
comparison
equal deleted inserted replaced
1731:ee5cc9e78493 1763:d6f45b55c972
95 95
96 address StubRoutines::_checkcast_arraycopy = NULL; 96 address StubRoutines::_checkcast_arraycopy = NULL;
97 address StubRoutines::_unsafe_arraycopy = NULL; 97 address StubRoutines::_unsafe_arraycopy = NULL;
98 address StubRoutines::_generic_arraycopy = NULL; 98 address StubRoutines::_generic_arraycopy = NULL;
99 99
100
101 address StubRoutines::_jbyte_fill;
102 address StubRoutines::_jshort_fill;
103 address StubRoutines::_jint_fill;
104 address StubRoutines::_arrayof_jbyte_fill;
105 address StubRoutines::_arrayof_jshort_fill;
106 address StubRoutines::_arrayof_jint_fill;
107
108
100 double (* StubRoutines::_intrinsic_log )(double) = NULL; 109 double (* StubRoutines::_intrinsic_log )(double) = NULL;
101 double (* StubRoutines::_intrinsic_log10 )(double) = NULL; 110 double (* StubRoutines::_intrinsic_log10 )(double) = NULL;
102 double (* StubRoutines::_intrinsic_exp )(double) = NULL; 111 double (* StubRoutines::_intrinsic_exp )(double) = NULL;
103 double (* StubRoutines::_intrinsic_pow )(double, double) = NULL; 112 double (* StubRoutines::_intrinsic_pow )(double, double) = NULL;
104 double (* StubRoutines::_intrinsic_sin )(double) = NULL; 113 double (* StubRoutines::_intrinsic_sin )(double) = NULL;
193 TEST_ARRAYCOPY(jint); 202 TEST_ARRAYCOPY(jint);
194 TEST_ARRAYCOPY(jlong); 203 TEST_ARRAYCOPY(jlong);
195 204
196 #undef TEST_ARRAYCOPY 205 #undef TEST_ARRAYCOPY
197 206
207 #define TEST_FILL(type) \
208 if (_##type##_fill != NULL) { \
209 union { \
210 double d; \
211 type body[96]; \
212 } s; \
213 \
214 int v = 32; \
215 for (int offset = -2; offset <= 2; offset++) { \
216 for (int i = 0; i < 96; i++) { \
217 s.body[i] = 1; \
218 } \
219 type* start = s.body + 8 + offset; \
220 for (int aligned = 0; aligned < 2; aligned++) { \
221 if (aligned) { \
222 if (((intptr_t)start) % HeapWordSize == 0) { \
223 ((void (*)(type*, int, int))StubRoutines::_arrayof_##type##_fill)(start, v, 80); \
224 } else { \
225 continue; \
226 } \
227 } else { \
228 ((void (*)(type*, int, int))StubRoutines::_##type##_fill)(start, v, 80); \
229 } \
230 for (int i = 0; i < 96; i++) { \
231 if (i < (8 + offset) || i >= (88 + offset)) { \
232 assert(s.body[i] == 1, "what?"); \
233 } else { \
234 assert(s.body[i] == 32, "what?"); \
235 } \
236 } \
237 } \
238 } \
239 } \
240
241 TEST_FILL(jbyte);
242 TEST_FILL(jshort);
243 TEST_FILL(jint);
244
245 #undef TEST_FILL
246
198 #define TEST_COPYRTN(type) \ 247 #define TEST_COPYRTN(type) \
199 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \ 248 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_##type##s_atomic), sizeof(type)); \
200 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type))) 249 test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::arrayof_conjoint_##type##s), (int)MAX2(sizeof(HeapWord), sizeof(type)))
201 250
202 // Make sure all the copy runtime routines properly handle zero count 251 // Make sure all the copy runtime routines properly handle zero count
313 assert(count != 0, "count should be non-zero"); 362 assert(count != 0, "count should be non-zero");
314 gen_arraycopy_barrier_pre((oop *) dest, count); 363 gen_arraycopy_barrier_pre((oop *) dest, count);
315 Copy::arrayof_conjoint_oops(src, dest, count); 364 Copy::arrayof_conjoint_oops(src, dest, count);
316 gen_arraycopy_barrier((oop *) dest, count); 365 gen_arraycopy_barrier((oop *) dest, count);
317 JRT_END 366 JRT_END
367
368
369 address StubRoutines::select_fill_function(BasicType t, bool aligned, const char* &name) {
370 #define RETURN_STUB(xxx_fill) { \
371 name = #xxx_fill; \
372 return StubRoutines::xxx_fill(); }
373
374 switch (t) {
375 case T_BYTE:
376 case T_BOOLEAN:
377 if (!aligned) RETURN_STUB(jbyte_fill);
378 RETURN_STUB(arrayof_jbyte_fill);
379 case T_CHAR:
380 case T_SHORT:
381 if (!aligned) RETURN_STUB(jshort_fill);
382 RETURN_STUB(arrayof_jshort_fill);
383 case T_INT:
384 case T_FLOAT:
385 if (!aligned) RETURN_STUB(jint_fill);
386 RETURN_STUB(arrayof_jint_fill);
387 case T_DOUBLE:
388 case T_LONG:
389 case T_ARRAY:
390 case T_OBJECT:
391 case T_NARROWOOP:
392 case T_ADDRESS:
393 // Currently unsupported
394 return NULL;
395
396 default:
397 ShouldNotReachHere();
398 return NULL;
399 }
400
401 #undef RETURN_STUB
402 }