Support inlining and crankshaft optimization of Math.random.

src/x64/lithium-x64.cc

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
@@ skipping 1396 matching lines @@
       UseFixed(instr->right(), rdx);
 #else
       UseFixed(instr->right(), rdi);
 #endif
   LPower* result = new LPower(left, right);
   return MarkAsCall(DefineFixedDouble(result, xmm3), instr,
                     CAN_DEOPTIMIZE_EAGERLY);
 }
 
 
+LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
+  ASSERT(instr->representation().IsDouble());
+  ASSERT(instr->global_object()->representation().IsTagged());
+#ifdef _WIN64
+  LOperand* global_object = UseFixed(instr->global_object(), rcx);
+#else
+  LOperand* global_object = UseFixed(instr->global_object(), rdi);
+#endif
+  LRandom* result = new LRandom(global_object);
+  return MarkAsCall(DefineFixedDouble(result, xmm1), instr);
+}
+
+
 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
   ASSERT(instr->left()->representation().IsTagged());
   ASSERT(instr->right()->representation().IsTagged());
   LOperand* left = UseFixed(instr->left(), rdx);
   LOperand* right = UseFixed(instr->right(), rax);
   LCmpT* result = new LCmpT(left, right);
   return MarkAsCall(DefineFixed(result, rax), instr);
 }
 
 
@@ skipping 824 matching lines @@
   LOperand* key = UseOrConstantAtStart(instr->key());
   LOperand* object = UseOrConstantAtStart(instr->object());
   LIn* result = new LIn(key, object);
   return MarkAsCall(DefineFixed(result, rax), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64