Inline Math.fround in optimized code.

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/double.h"
 #include "src/factory.h"
 #include "src/hydrogen-infer-representation.h"
 #include "src/property-details-inl.h"
@@ skipping 1185 matching lines @@
     os << " [true]";
   } else if (known_successor_index() == 1) {
     os << " [false]";
   }
   return os;
 }
 
 
 const char* HUnaryMathOperation::OpName() const {
   switch (op()) {
-    case kMathFloor: return "floor";
-    case kMathRound: return "round";
-    case kMathAbs: return "abs";
-    case kMathLog: return "log";
-    case kMathExp: return "exp";
-    case kMathSqrt: return "sqrt";
-    case kMathPowHalf: return "pow-half";
-    case kMathClz32: return "clz32";
+    case kMathFloor:
+      return "floor";
+    case kMathFround:
+      return "fround";
+    case kMathRound:
+      return "round";
+    case kMathAbs:
+      return "abs";
+    case kMathLog:
+      return "log";
+    case kMathExp:
+      return "exp";
+    case kMathSqrt:
+      return "sqrt";
+    case kMathPowHalf:
+      return "pow-half";
+    case kMathClz32:
+      return "clz32";
     default:
       UNREACHABLE();
       return NULL;
   }
 }
 
 
 Range* HUnaryMathOperation::InferRange(Zone* zone) {
   Representation r = representation();
   if (op() == kMathClz32) return new(zone) Range(0, 32);
@@ skipping 2904 matching lines @@
       switch (op) {
         case kMathExp:
           return H_CONSTANT_DOUBLE((d > 0.0) ? d : 0.0);
         case kMathLog:
         case kMathSqrt:
           return H_CONSTANT_DOUBLE((d > 0.0) ? d : base::OS::nan_value());
         case kMathPowHalf:
         case kMathAbs:
           return H_CONSTANT_DOUBLE((d > 0.0) ? d : -d);
         case kMathRound:
+        case kMathFround:
         case kMathFloor:
           return H_CONSTANT_DOUBLE(d);
         case kMathClz32:
           return H_CONSTANT_INT(32);
         default:
           UNREACHABLE();
           break;
       }
     }
     switch (op) {
       case kMathExp:
         return H_CONSTANT_DOUBLE(fast_exp(d));
       case kMathLog:
         return H_CONSTANT_DOUBLE(std::log(d));
       case kMathSqrt:
         return H_CONSTANT_DOUBLE(fast_sqrt(d));
       case kMathPowHalf:
         return H_CONSTANT_DOUBLE(power_double_double(d, 0.5));
       case kMathAbs:
         return H_CONSTANT_DOUBLE((d >= 0.0) ? d + 0.0 : -d);
       case kMathRound:
         // -0.5 .. -0.0 round to -0.0.
         if ((d >= -0.5 && Double(d).Sign() < 0)) return H_CONSTANT_DOUBLE(-0.0);
         // Doubles are represented as Significant * 2 ^ Exponent. If the
         // Exponent is not negative, the double value is already an integer.
         if (Double(d).Exponent() >= 0) return H_CONSTANT_DOUBLE(d);
         return H_CONSTANT_DOUBLE(std::floor(d + 0.5));
+      case kMathFround:
+        return H_CONSTANT_DOUBLE(static_cast<double>(static_cast<float>(d)));
       case kMathFloor:
         return H_CONSTANT_DOUBLE(std::floor(d));
       case kMathClz32: {
         uint32_t i = DoubleToUint32(d);
         return H_CONSTANT_INT(
             (i == 0) ? 32 : CompilerIntrinsics::CountLeadingZeros(i));
       }
       default:
         UNREACHABLE();
         break;
@@ skipping 595 matching lines @@
       break;
     case HObjectAccess::kExternalMemory:
       os << "[external-memory]";
       break;
   }
 
   return os << "@" << access.offset();
 }
 
 } }  // namespace v8::internal