Emit VMLA for multiply-add on ARM

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 17f3325b754c3449f682425313062cf438c8d581..c7bb6ec9a6491281b7bd0836ed9e6e911a081ebf 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1311,6 +1311,20 @@ LInstruction* LChunkBuilder::DoMul(HMul* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoMultiplyAddD(HMultiplyAddD* instr) {
+  ASSERT(instr->representation().IsDouble());
+  ASSERT(instr->a()->representation().IsDouble());
+  ASSERT(instr->b()->representation().IsDouble());
+  ASSERT(instr->c()->representation().IsDouble());
+
+  LOperand* a = UseRegisterAtStart(instr->a());
+  LOperand* b = UseRegisterAtStart(instr->b());
+  LOperand* c = UseRegisterAtStart(instr->c());
+  LMultiplyAddD* result = new(zone()) LMultiplyAddD(c, a, b);
+  return DefineSameAsFirst(result);
+}
+
+
 LInstruction* LChunkBuilder::DoSub(HSub* instr) {
   if (instr->representation().IsInteger32()) {
     ASSERT(instr->left()->representation().IsInteger32());