163 // Fujitsu SPARC64
164 static bool is_sparc64() { return (_features & sparc64_family_m) != 0; }
165
166 static bool is_sun4v() { return (_features & sun4v_m) != 0; }
167 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m && !is_sun4v() && !is_sparc64(); }
168
169 static bool has_fast_fxtof() { return is_niagara() || is_sparc64() || has_v9() && !is_ultra3(); }
170 static bool has_fast_idiv() { return is_niagara_plus() || is_sparc64(); }
171
172 // T4 and newer Sparc have fast RDPC instruction.
173 static bool has_fast_rdpc() { return is_T4(); }
174
175 // On T4 and newer Sparc BIS to the beginning of cache line always zeros it.
176 static bool has_block_zeroing() { return has_blk_init() && is_T4(); }
177
178 // default prefetch block size on sparc
179 static intx prefetch_data_size() { return L2_data_cache_line_size(); }
180
181 // Prefetch
182 static intx prefetch_copy_interval_in_bytes() {
183 intx interval = PrefetchCopyIntervalInBytes;
184 return interval >= 0 ? interval : (has_v9() ? 512 : 0);
185 }
186 static intx prefetch_scan_interval_in_bytes() {
187 intx interval = PrefetchScanIntervalInBytes;
188 return interval >= 0 ? interval : (has_v9() ? 512 : 0);
189 }
190 static intx prefetch_fields_ahead() {
191 intx count = PrefetchFieldsAhead;
192 return count >= 0 ? count : (is_ultra3() ? 1 : 0);
193 }
194
195 static intx allocate_prefetch_distance() {
196 // This method should be called before allocate_prefetch_style().
197 intx count = AllocatePrefetchDistance;
198 if (count < 0) { // default is not defined ?
199 count = 512;
200 }
201 return count;
202 }
203 static intx allocate_prefetch_style() {
204 assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
205 // Return 0 if AllocatePrefetchDistance was not defined.
206 return AllocatePrefetchDistance > 0 ? AllocatePrefetchStyle : 0;
207 }
208
209 // Assembler testing
210 static void allow_all();
211 static void revert();
212
213 // Override the Abstract_VM_Version implementation.
214 static uint page_size_count() { return is_sun4v() ? 4 : 2; }
215
216 // Calculates the number of parallel threads
217 static unsigned int calc_parallel_worker_threads();
218 };
219
220 #endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP
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163 // Fujitsu SPARC64
164 static bool is_sparc64() { return (_features & sparc64_family_m) != 0; }
165
166 static bool is_sun4v() { return (_features & sun4v_m) != 0; }
167 static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m && !is_sun4v() && !is_sparc64(); }
168
169 static bool has_fast_fxtof() { return is_niagara() || is_sparc64() || has_v9() && !is_ultra3(); }
170 static bool has_fast_idiv() { return is_niagara_plus() || is_sparc64(); }
171
172 // T4 and newer Sparc have fast RDPC instruction.
173 static bool has_fast_rdpc() { return is_T4(); }
174
175 // On T4 and newer Sparc BIS to the beginning of cache line always zeros it.
176 static bool has_block_zeroing() { return has_blk_init() && is_T4(); }
177
178 // default prefetch block size on sparc
179 static intx prefetch_data_size() { return L2_data_cache_line_size(); }
180
181 // Prefetch
182 static intx prefetch_copy_interval_in_bytes() {
183 return (has_v9() ? 512 : 0);
184 }
185 static intx prefetch_scan_interval_in_bytes() {
186 return (has_v9() ? 512 : 0);
187 }
188 static intx prefetch_fields_ahead() {
189 return (is_ultra3() ? 1 : 0);
190 }
191
192 // Assembler testing
193 static void allow_all();
194 static void revert();
195
196 // Override the Abstract_VM_Version implementation.
197 static uint page_size_count() { return is_sun4v() ? 4 : 2; }
198
199 // Calculates the number of parallel threads
200 static unsigned int calc_parallel_worker_threads();
201 };
202
203 #endif // CPU_SPARC_VM_VM_VERSION_SPARC_HPP
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