MIPS: Inline Math.fround in optimized code.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index be130f64175937a72c38020f510f5e791d3f7f06..36bdff1fc4e1ac514d571324d0ab69de05baa987 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3824,6 +3824,14 @@ void LCodeGen::DoMathRound(LMathRound* instr) {
 }
 
 
+void LCodeGen::DoMathFround(LMathFround* instr) {
+  DoubleRegister input = ToDoubleRegister(instr->value());
+  DoubleRegister result = ToDoubleRegister(instr->result());
+  __ cvt_s_d(result.low(), input);
+  __ cvt_d_s(result, result.low());
+}
+
+
 void LCodeGen::DoMathSqrt(LMathSqrt* instr) {
   DoubleRegister input = ToDoubleRegister(instr->value());
   DoubleRegister result = ToDoubleRegister(instr->result());