Emit VMLA for multiply-add on ARM

src/arm/simulator-arm.cc

Index: src/arm/simulator-arm.cc
diff --git a/src/arm/simulator-arm.cc b/src/arm/simulator-arm.cc
index 5cdba9c467a65c1b23862ccbf3638837784152a6..1dff93fccdd2ab02c1f1250d62fbd08ca442915c 100644
--- a/src/arm/simulator-arm.cc
+++ b/src/arm/simulator-arm.cc
@@ -2771,6 +2771,17 @@ void Simulator::DecodeTypeVFP(Instruction* instr) {
       double dm_value = get_double_from_d_register(vm);
       double dd_value = dn_value * dm_value;
       set_d_register_from_double(vd, dd_value);
+    } else if ((instr->Opc1Value() == 0x0) && !(instr->Opc3Value() & 0x1)) {
+      // vmla
+      if (instr->SzValue() != 0x1) {
+        UNREACHABLE();  // Not used by V8.
+      }
+
+      //printf("SIMULATING VMLA!!\n");
+      double dd_value = get_double_from_d_register(vd);
+      double dn_value = get_double_from_d_register(vn);
+      double dm_value = get_double_from_d_register(vm);
+      set_d_register_from_double(vd, dd_value + dn_value * dm_value);
     } else if ((instr->Opc1Value() == 0x4) && !(instr->Opc3Value() & 0x1)) {
       // vdiv
       if (instr->SzValue() != 0x1) {