Emit VMLA for multiply-add on ARM

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index 0ba5e45a8fe1c67b99c9e197d89c53a088410fc5..c9819a16765ed0d6573ad6c7d671eaba8ec36805 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -135,6 +135,7 @@ class LCodeGen;
   V(MathMinMax)                                 \
   V(ModI)                                       \
   V(MulI)                                       \
+  V(MultiplyAdd)                                \
   V(NumberTagD)                                 \
   V(NumberTagI)                                 \
   V(NumberTagU)                                 \
@@ -621,6 +622,23 @@ class LMulI: public LTemplateInstruction<1, 2, 1> {
 };
 
 
+class LMultiplyAdd: public LTemplateInstruction<1, 3, 0> { // FIXME: Do we need a tmp?

[ulan_google, 2012/11/07 09:54:03]

Nope, we don't use tmp register in the implementation of the instruction.

+ public:
+  LMultiplyAdd(LOperand* c, LOperand *a, LOperand* b) {
+    inputs_[0] = c;
+    inputs_[1] = a;
+    inputs_[2] = b;
+  }
+
+  LOperand* c() { return inputs_[0]; }
+  LOperand* a() { return inputs_[1]; }
+  LOperand* b() { return inputs_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MultiplyAdd, "multiplyadd")
+  DECLARE_HYDROGEN_ACCESSOR(MultiplyAdd)
+};
+
+
 class LCmpIDAndBranch: public LControlInstruction<2, 0> {
  public:
   LCmpIDAndBranch(LOperand* left, LOperand* right) {