Inline Math.sqrt in new compilers.

runtime/vm/opt_code_generator_ia32.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/opt_code_generator.h"
 
 #include "vm/assembler_macros.h"
@@ skipping 2723 matching lines @@
     }
   }
   return false;
 }
 
 
 // TODO(srdjan): For Math.sqrt read type feedback in Math.sqrt and decide
 // if the argument is double, smi or something else.
 bool OptimizingCodeGenerator::TryInlineStaticCall(StaticCallNode* node) {
   Recognizer::Kind recognized = Recognizer::RecognizeKind(node->function());
-  if (false && recognized == Recognizer::kMathSqrt) {
+  if (recognized == Recognizer::kMathSqrt) {
     Label smi_to_double, call_method, done;
     __ movl(EAX, Address(ESP, 0));
     CheckIfDoubleOrSmi(EAX, EBX, &smi_to_double, &call_method);
     __ movsd(XMM1, FieldAddress(EAX, Double::value_offset()));
     __ sqrtsd(XMM0, XMM1);
     AssemblerMacros::TryAllocate(assembler_,
                                  double_class_,
                                  &call_method,
                                  EAX);  // Result register.
     __ movsd(FieldAddress(EAX, Double::value_offset()), XMM0);
@@ skipping 132 matching lines @@
     }
   }
   // TODO(srdjan): Implement unary kSUB (negate) Mint.
   CodeGenerator::VisitUnaryOpNode(node);
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32