Fri, 25 Mar 2011 09:35:39 +0100
7029017: Additional architecture support for c2 compiler
Summary: Enables cross building of a c2 VM. Support masking of shift counts when the processor architecture mandates it.
Reviewed-by: kvn, never
duke@435 | 1 | /* |
kvn@2269 | 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "assembler_sparc.inline.hpp" |
stefank@2314 | 27 | #include "memory/resourceArea.hpp" |
stefank@2314 | 28 | #include "runtime/java.hpp" |
stefank@2314 | 29 | #include "runtime/stubCodeGenerator.hpp" |
stefank@2314 | 30 | #include "vm_version_sparc.hpp" |
stefank@2314 | 31 | #ifdef TARGET_OS_FAMILY_linux |
stefank@2314 | 32 | # include "os_linux.inline.hpp" |
stefank@2314 | 33 | #endif |
stefank@2314 | 34 | #ifdef TARGET_OS_FAMILY_solaris |
stefank@2314 | 35 | # include "os_solaris.inline.hpp" |
stefank@2314 | 36 | #endif |
duke@435 | 37 | |
duke@435 | 38 | int VM_Version::_features = VM_Version::unknown_m; |
duke@435 | 39 | const char* VM_Version::_features_str = ""; |
duke@435 | 40 | |
duke@435 | 41 | void VM_Version::initialize() { |
duke@435 | 42 | _features = determine_features(); |
duke@435 | 43 | PrefetchCopyIntervalInBytes = prefetch_copy_interval_in_bytes(); |
duke@435 | 44 | PrefetchScanIntervalInBytes = prefetch_scan_interval_in_bytes(); |
duke@435 | 45 | PrefetchFieldsAhead = prefetch_fields_ahead(); |
duke@435 | 46 | |
duke@435 | 47 | // Allocation prefetch settings |
duke@435 | 48 | intx cache_line_size = L1_data_cache_line_size(); |
duke@435 | 49 | if( cache_line_size > AllocatePrefetchStepSize ) |
duke@435 | 50 | AllocatePrefetchStepSize = cache_line_size; |
duke@435 | 51 | if( FLAG_IS_DEFAULT(AllocatePrefetchLines) ) |
duke@435 | 52 | AllocatePrefetchLines = 3; // Optimistic value |
duke@435 | 53 | assert( AllocatePrefetchLines > 0, "invalid value"); |
duke@435 | 54 | if( AllocatePrefetchLines < 1 ) // set valid value in product VM |
duke@435 | 55 | AllocatePrefetchLines = 1; // Conservative value |
duke@435 | 56 | |
duke@435 | 57 | AllocatePrefetchDistance = allocate_prefetch_distance(); |
duke@435 | 58 | AllocatePrefetchStyle = allocate_prefetch_style(); |
duke@435 | 59 | |
duke@435 | 60 | assert(AllocatePrefetchDistance % AllocatePrefetchStepSize == 0, "invalid value"); |
duke@435 | 61 | |
duke@435 | 62 | UseSSE = 0; // Only on x86 and x64 |
duke@435 | 63 | |
duke@435 | 64 | _supports_cx8 = has_v9(); |
duke@435 | 65 | |
kvn@2403 | 66 | if (is_niagara()) { |
duke@435 | 67 | // Indirect branch is the same cost as direct |
duke@435 | 68 | if (FLAG_IS_DEFAULT(UseInlineCaches)) { |
kvn@1110 | 69 | FLAG_SET_DEFAULT(UseInlineCaches, false); |
duke@435 | 70 | } |
kvn@2403 | 71 | // Align loops on a single instruction boundary. |
kvn@2403 | 72 | if (FLAG_IS_DEFAULT(OptoLoopAlignment)) { |
kvn@2403 | 73 | FLAG_SET_DEFAULT(OptoLoopAlignment, 4); |
kvn@2403 | 74 | } |
kvn@2403 | 75 | // When using CMS, we cannot use memset() in BOT updates because |
kvn@2403 | 76 | // the sun4v/CMT version in libc_psr uses BIS which exposes |
kvn@2403 | 77 | // "phantom zeros" to concurrent readers. See 6948537. |
kvn@2403 | 78 | if (FLAG_IS_DEFAULT(UseMemSetInBOT) && UseConcMarkSweepGC) { |
kvn@2403 | 79 | FLAG_SET_DEFAULT(UseMemSetInBOT, false); |
kvn@2403 | 80 | } |
coleenp@548 | 81 | #ifdef _LP64 |
kvn@1077 | 82 | // 32-bit oops don't make sense for the 64-bit VM on sparc |
kvn@1077 | 83 | // since the 32-bit VM has the same registers and smaller objects. |
kvn@1077 | 84 | Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes); |
coleenp@548 | 85 | #endif // _LP64 |
duke@435 | 86 | #ifdef COMPILER2 |
duke@435 | 87 | // Indirect branch is the same cost as direct |
duke@435 | 88 | if (FLAG_IS_DEFAULT(UseJumpTables)) { |
kvn@1110 | 89 | FLAG_SET_DEFAULT(UseJumpTables, true); |
duke@435 | 90 | } |
duke@435 | 91 | // Single-issue, so entry and loop tops are |
duke@435 | 92 | // aligned on a single instruction boundary |
duke@435 | 93 | if (FLAG_IS_DEFAULT(InteriorEntryAlignment)) { |
kvn@1110 | 94 | FLAG_SET_DEFAULT(InteriorEntryAlignment, 4); |
duke@435 | 95 | } |
kvn@2403 | 96 | if (is_niagara_plus()) { |
kvn@2269 | 97 | if (has_blk_init() && AllocatePrefetchStyle > 0 && |
kvn@2269 | 98 | FLAG_IS_DEFAULT(AllocatePrefetchStyle)) { |
kvn@1802 | 99 | // Use BIS instruction for allocation prefetch. |
kvn@1802 | 100 | FLAG_SET_DEFAULT(AllocatePrefetchStyle, 3); |
kvn@1802 | 101 | if (FLAG_IS_DEFAULT(AllocatePrefetchDistance)) { |
kvn@1802 | 102 | // Use smaller prefetch distance on N2 with BIS |
kvn@1802 | 103 | FLAG_SET_DEFAULT(AllocatePrefetchDistance, 64); |
kvn@1802 | 104 | } |
kvn@1802 | 105 | } |
kvn@1802 | 106 | if (AllocatePrefetchStyle != 3 && FLAG_IS_DEFAULT(AllocatePrefetchDistance)) { |
kvn@1802 | 107 | // Use different prefetch distance without BIS |
kvn@1802 | 108 | FLAG_SET_DEFAULT(AllocatePrefetchDistance, 256); |
kvn@1802 | 109 | } |
duke@435 | 110 | } |
duke@435 | 111 | #endif |
duke@435 | 112 | } |
duke@435 | 113 | |
twisti@1078 | 114 | // Use hardware population count instruction if available. |
twisti@1078 | 115 | if (has_hardware_popc()) { |
twisti@1078 | 116 | if (FLAG_IS_DEFAULT(UsePopCountInstruction)) { |
kvn@1110 | 117 | FLAG_SET_DEFAULT(UsePopCountInstruction, true); |
twisti@1078 | 118 | } |
twisti@1078 | 119 | } |
twisti@1078 | 120 | |
never@2085 | 121 | #ifdef COMPILER2 |
never@2085 | 122 | // Currently not supported anywhere. |
never@2085 | 123 | FLAG_SET_DEFAULT(UseFPUForSpilling, false); |
never@2085 | 124 | #endif |
never@2085 | 125 | |
duke@435 | 126 | char buf[512]; |
kvn@2403 | 127 | jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", |
duke@435 | 128 | (has_v8() ? ", has_v8" : ""), |
duke@435 | 129 | (has_v9() ? ", has_v9" : ""), |
twisti@1078 | 130 | (has_hardware_popc() ? ", popc" : ""), |
duke@435 | 131 | (has_vis1() ? ", has_vis1" : ""), |
duke@435 | 132 | (has_vis2() ? ", has_vis2" : ""), |
kvn@2403 | 133 | (has_vis3() ? ", has_vis3" : ""), |
kvn@2269 | 134 | (has_blk_init() ? ", has_blk_init" : ""), |
duke@435 | 135 | (is_ultra3() ? ", is_ultra3" : ""), |
duke@435 | 136 | (is_sun4v() ? ", is_sun4v" : ""), |
kvn@2403 | 137 | (is_niagara() ? ", is_niagara" : ""), |
kvn@2403 | 138 | (is_niagara_plus() ? ", is_niagara_plus" : ""), |
kvn@2269 | 139 | (is_sparc64() ? ", is_sparc64" : ""), |
twisti@1076 | 140 | (!has_hardware_mul32() ? ", no-mul32" : ""), |
twisti@1076 | 141 | (!has_hardware_div32() ? ", no-div32" : ""), |
duke@435 | 142 | (!has_hardware_fsmuld() ? ", no-fsmuld" : "")); |
duke@435 | 143 | |
duke@435 | 144 | // buf is started with ", " or is empty |
duke@435 | 145 | _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf); |
duke@435 | 146 | |
duke@435 | 147 | #ifndef PRODUCT |
duke@435 | 148 | if (PrintMiscellaneous && Verbose) { |
duke@435 | 149 | tty->print("Allocation: "); |
duke@435 | 150 | if (AllocatePrefetchStyle <= 0) { |
duke@435 | 151 | tty->print_cr("no prefetching"); |
duke@435 | 152 | } else { |
duke@435 | 153 | if (AllocatePrefetchLines > 1) { |
duke@435 | 154 | tty->print_cr("PREFETCH %d, %d lines of size %d bytes", AllocatePrefetchDistance, AllocatePrefetchLines, AllocatePrefetchStepSize); |
duke@435 | 155 | } else { |
duke@435 | 156 | tty->print_cr("PREFETCH %d, one line", AllocatePrefetchDistance); |
duke@435 | 157 | } |
duke@435 | 158 | } |
duke@435 | 159 | if (PrefetchCopyIntervalInBytes > 0) { |
duke@435 | 160 | tty->print_cr("PrefetchCopyIntervalInBytes %d", PrefetchCopyIntervalInBytes); |
duke@435 | 161 | } |
duke@435 | 162 | if (PrefetchScanIntervalInBytes > 0) { |
duke@435 | 163 | tty->print_cr("PrefetchScanIntervalInBytes %d", PrefetchScanIntervalInBytes); |
duke@435 | 164 | } |
duke@435 | 165 | if (PrefetchFieldsAhead > 0) { |
duke@435 | 166 | tty->print_cr("PrefetchFieldsAhead %d", PrefetchFieldsAhead); |
duke@435 | 167 | } |
duke@435 | 168 | } |
duke@435 | 169 | #endif // PRODUCT |
duke@435 | 170 | } |
duke@435 | 171 | |
duke@435 | 172 | void VM_Version::print_features() { |
duke@435 | 173 | tty->print_cr("Version:%s", cpu_features()); |
duke@435 | 174 | } |
duke@435 | 175 | |
duke@435 | 176 | int VM_Version::determine_features() { |
duke@435 | 177 | if (UseV8InstrsOnly) { |
duke@435 | 178 | NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-V8");) |
duke@435 | 179 | return generic_v8_m; |
duke@435 | 180 | } |
duke@435 | 181 | |
duke@435 | 182 | int features = platform_features(unknown_m); // platform_features() is os_arch specific |
duke@435 | 183 | |
duke@435 | 184 | if (features == unknown_m) { |
duke@435 | 185 | features = generic_v9_m; |
duke@435 | 186 | warning("Cannot recognize SPARC version. Default to V9"); |
duke@435 | 187 | } |
duke@435 | 188 | |
kvn@2403 | 189 | assert(is_T_family(features) == is_niagara(features), "Niagara should be T series"); |
kvn@2403 | 190 | if (UseNiagaraInstrs) { // Force code generation for Niagara |
kvn@2403 | 191 | if (is_T_family(features)) { |
duke@435 | 192 | // Happy to accomodate... |
duke@435 | 193 | } else { |
duke@435 | 194 | NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");) |
kvn@2403 | 195 | features |= T_family_m; |
duke@435 | 196 | } |
duke@435 | 197 | } else { |
kvn@2403 | 198 | if (is_T_family(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) { |
duke@435 | 199 | NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Not-Niagara");) |
kvn@2403 | 200 | features &= ~(T_family_m | T1_model_m); |
duke@435 | 201 | } else { |
duke@435 | 202 | // Happy to accomodate... |
duke@435 | 203 | } |
duke@435 | 204 | } |
duke@435 | 205 | |
duke@435 | 206 | return features; |
duke@435 | 207 | } |
duke@435 | 208 | |
duke@435 | 209 | static int saved_features = 0; |
duke@435 | 210 | |
duke@435 | 211 | void VM_Version::allow_all() { |
duke@435 | 212 | saved_features = _features; |
duke@435 | 213 | _features = all_features_m; |
duke@435 | 214 | } |
duke@435 | 215 | |
duke@435 | 216 | void VM_Version::revert() { |
duke@435 | 217 | _features = saved_features; |
duke@435 | 218 | } |
jmasa@445 | 219 | |
jmasa@445 | 220 | unsigned int VM_Version::calc_parallel_worker_threads() { |
jmasa@445 | 221 | unsigned int result; |
kvn@2403 | 222 | if (is_niagara_plus()) { |
jmasa@445 | 223 | result = nof_parallel_worker_threads(5, 16, 8); |
jmasa@445 | 224 | } else { |
jmasa@445 | 225 | result = nof_parallel_worker_threads(5, 8, 8); |
jmasa@445 | 226 | } |
jmasa@445 | 227 | return result; |
jmasa@445 | 228 | } |