1 /*
   2  * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "c1/c1_Compilation.hpp"
  27 #include "c1/c1_Compiler.hpp"
  28 #include "c1/c1_FrameMap.hpp"
  29 #include "c1/c1_GraphBuilder.hpp"
  30 #include "c1/c1_LinearScan.hpp"
  31 #include "c1/c1_MacroAssembler.hpp"
  32 #include "c1/c1_Runtime1.hpp"
  33 #include "c1/c1_ValueType.hpp"
  34 #include "compiler/compileBroker.hpp"
  35 #include "interpreter/linkResolver.hpp"
  36 #include "memory/allocation.hpp"
  37 #include "memory/allocation.inline.hpp"
  38 #include "memory/resourceArea.hpp"
  39 #include "prims/nativeLookup.hpp"
  40 #include "runtime/arguments.hpp"
  41 #include "runtime/interfaceSupport.hpp"
  42 #include "runtime/sharedRuntime.hpp"
  43 
  44 
  45 Compiler::Compiler() : AbstractCompiler(compiler_c1) {
  46 }
  47 
  48 void Compiler::init_c1_runtime() {
  49   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
  50   Arena* arena = new (mtCompiler) Arena(mtCompiler);
  51   Runtime1::initialize(buffer_blob);
  52   FrameMap::initialize();
  53   // initialize data structures
  54   ValueType::initialize(arena);
  55   GraphBuilder::initialize();
  56   // note: to use more than one instance of LinearScan at a time this function call has to
  57   //       be moved somewhere outside of this constructor:
  58   Interval::initialize(arena);
  59 }
  60 
  61 
  62 void Compiler::initialize() {
  63   // Buffer blob must be allocated per C1 compiler thread at startup
  64   BufferBlob* buffer_blob = init_buffer_blob();
  65 
  66   if (should_perform_init()) {
  67     if (buffer_blob == NULL) {
  68       // When we come here we are in state 'initializing'; entire C1 compilation
  69       // can be shut down.
  70       set_state(failed);
  71     } else {
  72       init_c1_runtime();
  73       set_state(initialized);
  74     }
  75   }
  76 }
  77 
  78 int Compiler::code_buffer_size() {
  79   assert(SegmentedCodeCache, "Should be only used with a segmented code cache");
  80   return Compilation::desired_max_code_buffer_size() + Compilation::desired_max_constant_size();
  81 }
  82 
  83 BufferBlob* Compiler::init_buffer_blob() {
  84   // Allocate buffer blob once at startup since allocation for each
  85   // compilation seems to be too expensive (at least on Intel win32).
  86   assert (CompilerThread::current()->get_buffer_blob() == NULL, "Should initialize only once");
  87 
  88   // setup CodeBuffer.  Preallocate a BufferBlob of size
  89   // NMethodSizeLimit plus some extra space for constants.
  90   int code_buffer_size = Compilation::desired_max_code_buffer_size() +
  91     Compilation::desired_max_constant_size();
  92 
  93   BufferBlob* buffer_blob = BufferBlob::create("C1 temporary CodeBuffer", code_buffer_size);
  94   if (buffer_blob != NULL) {
  95     CompilerThread::current()->set_buffer_blob(buffer_blob);
  96   }
  97 
  98   return buffer_blob;
  99 }
 100 
 101 bool Compiler::is_intrinsic_supported(const methodHandle& method) {
 102   vmIntrinsics::ID id = method->intrinsic_id();
 103   assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
 104 
 105   if (method->is_synchronized()) {
 106     // C1 does not support intrinsification of synchronized methods.
 107     return false;
 108   }
 109 
 110   switch (id) {
 111   case vmIntrinsics::_compareAndSetLong:
 112     if (!VM_Version::supports_cx8()) return false;
 113     break;
 114   case vmIntrinsics::_getAndAddInt:
 115     if (!VM_Version::supports_atomic_getadd4()) return false;
 116     break;
 117   case vmIntrinsics::_getAndAddLong:
 118     if (!VM_Version::supports_atomic_getadd8()) return false;
 119     break;
 120   case vmIntrinsics::_getAndSetInt:
 121     if (!VM_Version::supports_atomic_getset4()) return false;
 122     break;
 123   case vmIntrinsics::_getAndSetLong:
 124     if (!VM_Version::supports_atomic_getset8()) return false;
 125     break;
 126   case vmIntrinsics::_getAndSetObject:
 127 #ifdef _LP64
 128     if (!UseCompressedOops && !VM_Version::supports_atomic_getset8()) return false;
 129     if (UseCompressedOops && !VM_Version::supports_atomic_getset4()) return false;
 130 #else
 131     if (!VM_Version::supports_atomic_getset4()) return false;
 132 #endif
 133     break;
 134   case vmIntrinsics::_onSpinWait:
 135     if (!VM_Version::supports_on_spin_wait()) return false;
 136     break;
 137   case vmIntrinsics::_arraycopy:
 138   case vmIntrinsics::_currentTimeMillis:
 139   case vmIntrinsics::_nanoTime:
 140   case vmIntrinsics::_Reference_get:
 141     // Use the intrinsic version of Reference.get() so that the value in
 142     // the referent field can be registered by the G1 pre-barrier code.
 143     // Also to prevent commoning reads from this field across safepoint
 144     // since GC can change its value.
 145   case vmIntrinsics::_loadFence:
 146   case vmIntrinsics::_storeFence:
 147   case vmIntrinsics::_fullFence:
 148   case vmIntrinsics::_floatToRawIntBits:
 149   case vmIntrinsics::_intBitsToFloat:
 150   case vmIntrinsics::_doubleToRawLongBits:
 151   case vmIntrinsics::_longBitsToDouble:
 152   case vmIntrinsics::_getClass:
 153   case vmIntrinsics::_isInstance:
 154   case vmIntrinsics::_isPrimitive:
 155   case vmIntrinsics::_currentThread:
 156   case vmIntrinsics::_dabs:
 157   case vmIntrinsics::_dsqrt:
 158   case vmIntrinsics::_dsin:
 159   case vmIntrinsics::_dcos:
 160   case vmIntrinsics::_dtan:
 161   case vmIntrinsics::_dlog:
 162   case vmIntrinsics::_dlog10:
 163   case vmIntrinsics::_dexp:
 164   case vmIntrinsics::_dpow:
 165   case vmIntrinsics::_fmaD:
 166   case vmIntrinsics::_fmaF:
 167   case vmIntrinsics::_getObject:
 168   case vmIntrinsics::_getBoolean:
 169   case vmIntrinsics::_getByte:
 170   case vmIntrinsics::_getShort:
 171   case vmIntrinsics::_getChar:
 172   case vmIntrinsics::_getInt:
 173   case vmIntrinsics::_getLong:
 174   case vmIntrinsics::_getFloat:
 175   case vmIntrinsics::_getDouble:
 176   case vmIntrinsics::_putObject:
 177   case vmIntrinsics::_putBoolean:
 178   case vmIntrinsics::_putByte:
 179   case vmIntrinsics::_putShort:
 180   case vmIntrinsics::_putChar:
 181   case vmIntrinsics::_putInt:
 182   case vmIntrinsics::_putLong:
 183   case vmIntrinsics::_putFloat:
 184   case vmIntrinsics::_putDouble:
 185   case vmIntrinsics::_getObjectVolatile:
 186   case vmIntrinsics::_getBooleanVolatile:
 187   case vmIntrinsics::_getByteVolatile:
 188   case vmIntrinsics::_getShortVolatile:
 189   case vmIntrinsics::_getCharVolatile:
 190   case vmIntrinsics::_getIntVolatile:
 191   case vmIntrinsics::_getLongVolatile:
 192   case vmIntrinsics::_getFloatVolatile:
 193   case vmIntrinsics::_getDoubleVolatile:
 194   case vmIntrinsics::_putObjectVolatile:
 195   case vmIntrinsics::_putBooleanVolatile:
 196   case vmIntrinsics::_putByteVolatile:
 197   case vmIntrinsics::_putShortVolatile:
 198   case vmIntrinsics::_putCharVolatile:
 199   case vmIntrinsics::_putIntVolatile:
 200   case vmIntrinsics::_putLongVolatile:
 201   case vmIntrinsics::_putFloatVolatile:
 202   case vmIntrinsics::_putDoubleVolatile:
 203   case vmIntrinsics::_getShortUnaligned:
 204   case vmIntrinsics::_getCharUnaligned:
 205   case vmIntrinsics::_getIntUnaligned:
 206   case vmIntrinsics::_getLongUnaligned:
 207   case vmIntrinsics::_putShortUnaligned:
 208   case vmIntrinsics::_putCharUnaligned:
 209   case vmIntrinsics::_putIntUnaligned:
 210   case vmIntrinsics::_putLongUnaligned:
 211   case vmIntrinsics::_checkIndex:
 212   case vmIntrinsics::_updateCRC32:
 213   case vmIntrinsics::_updateBytesCRC32:
 214   case vmIntrinsics::_updateByteBufferCRC32:
 215 #ifdef SPARC
 216   case vmIntrinsics::_updateBytesCRC32C:
 217   case vmIntrinsics::_updateDirectByteBufferCRC32C:
 218 #endif
 219   case vmIntrinsics::_vectorizedMismatch:
 220   case vmIntrinsics::_compareAndSetInt:
 221   case vmIntrinsics::_compareAndSetObject:
 222   case vmIntrinsics::_getCharStringU:
 223   case vmIntrinsics::_putCharStringU:
 224 #ifdef TRACE_HAVE_INTRINSICS
 225   case vmIntrinsics::_counterTime:
 226   case vmIntrinsics::_getBufferWriter:
 227 #if defined(_LP64) || !defined(TRACE_ID_CLASS_SHIFT)
 228   case vmIntrinsics::_getClassId:
 229 #endif
 230 #endif
 231     break;
 232   default:
 233     return false; // Intrinsics not on the previous list are not available.
 234   }
 235 
 236   return true;
 237 }
 238 
 239 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci, DirectiveSet* directive) {
 240   BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
 241   assert(buffer_blob != NULL, "Must exist");
 242   // invoke compilation
 243   {
 244     // We are nested here because we need for the destructor
 245     // of Compilation to occur before we release the any
 246     // competing compiler thread
 247     ResourceMark rm;
 248     Compilation c(this, env, method, entry_bci, buffer_blob, directive);
 249   }
 250 }
 251 
 252 
 253 void Compiler::print_timers() {
 254   Compilation::print_timers();
 255 }