Emit VMLA for multiply-add on ARM

src/arm/disasm-arm.cc

Index: src/arm/disasm-arm.cc
diff --git a/src/arm/disasm-arm.cc b/src/arm/disasm-arm.cc
index af2ed52ad79db3758dda17508de220a69caa94b1..fde1dca2ecd5ec90e475a751f45420b4b8532954 100644
--- a/src/arm/disasm-arm.cc
+++ b/src/arm/disasm-arm.cc
@@ -1098,6 +1098,7 @@ int Decoder::DecodeType7(Instruction* instr) {
 // Dd = vadd(Dn, Dm)
 // Dd = vsub(Dn, Dm)
 // Dd = vmul(Dn, Dm)
+// FIXME: vmla comment
 // Dd = vdiv(Dn, Dm)
 // vcmp(Dd, Dm)
 // vmrs
@@ -1160,6 +1161,13 @@ void Decoder::DecodeTypeVFP(Instruction* instr) {
       } else {
         Unknown(instr);  // Not used by V8.
       }
+    } else if ((instr->Opc1Value() == 0x0) && !(instr->Opc3Value() & 0x1)) {
+      printf("DISASM VFMA\n");
+      if (instr->SzValue() == 0x1) {
+        Format(instr, "vmla.f64'cond 'Dd, 'Dn, 'Dm");
+      } else {
+        Unknown(instr);  // Not used by V8.
+      }
     } else if ((instr->Opc1Value() == 0x4) && !(instr->Opc3Value() & 0x1)) {
       if (instr->SzValue() == 0x1) {
         Format(instr, "vdiv.f64'cond 'Dd, 'Dn, 'Dm");