Bug 948241 - IonMonkey: Use FixedList in MAsmJSCall. r=luke

js/src/jit/MIR.cpp

@@ -2767,21 +2767,17 @@ MAsmJSCall::New(TempAllocator &alloc, Callee callee, const Args &args, MIRType r
     call->callee_ = callee;
     call->setResultType(resultType);
 
-    call->numArgs_ = args.length();
-    call->argRegs_ = (AnyRegister *)GetIonContext()->temp->allocate(call->numArgs_ * sizeof(AnyRegister));
-    if (!call->argRegs_)
+    if (!call->argRegs_.init(alloc, args.length()))
         return nullptr;
-    for (size_t i = 0; i < call->numArgs_; i++)
+    for (size_t i = 0; i < call->argRegs_.length(); i++)
         call->argRegs_[i] = args[i].reg;
 
-    call->numOperands_ = call->numArgs_ + (callee.which() == Callee::Dynamic ? 1 : 0);
-    call->operands_ = (MUse *)GetIonContext()->temp->allocate(call->numOperands_ * sizeof(MUse));
-    if (!call->operands_)
+    if (!call->operands_.init(alloc, call->argRegs_.length() + (callee.which() == Callee::Dynamic ? 1 : 0)))
         return nullptr;
-    for (size_t i = 0; i < call->numArgs_; i++)
+    for (size_t i = 0; i < call->argRegs_.length(); i++)
         call->setOperand(i, args[i].def);
     if (callee.which() == Callee::Dynamic)
-        call->setOperand(call->numArgs_, callee.dynamic());
+        call->setOperand(call->argRegs_.length(), callee.dynamic());
 
     return call;
 }

js/src/jit/MIR.h

@@ -9484,10 +9484,8 @@ class MAsmJSCall MOZ_FINAL : public MInstruction
     };
 
     Callee callee_;
-    size_t numOperands_;
-    MUse *operands_;
-    size_t numArgs_;
-    AnyRegister *argRegs_;
+    FixedList<MUse> operands_;
+    FixedList<AnyRegister> argRegs_;
     size_t spIncrement_;
 
   protected:
@@ -9513,17 +9511,17 @@ class MAsmJSCall MOZ_FINAL : public MInstruction
                            MIRType resultType, size_t spIncrement);
 
     size_t numOperands() const {
-        return numOperands_;
+        return operands_.length();
     }
     MDefinition *getOperand(size_t index) const {
-        JS_ASSERT(index < numOperands_);
+        JS_ASSERT(index < numOperands());
         return operands_[index].producer();
     }
     size_t numArgs() const {
-        return numArgs_;
+        return argRegs_.length();
     }
     AnyRegister registerForArg(size_t index) const {
-        JS_ASSERT(index < numArgs_);
+        JS_ASSERT(index < numArgs());
         return argRegs_[index];
     }
     Callee callee() const {
@@ -9531,8 +9529,8 @@ class MAsmJSCall MOZ_FINAL : public MInstruction
     }
     size_t dynamicCalleeOperandIndex() const {
         JS_ASSERT(callee_.which() == Callee::Dynamic);
-        JS_ASSERT(numArgs_ == numOperands_ - 1);
-        return numArgs_;
+        JS_ASSERT(numArgs() == numOperands() - 1);
+        return numArgs();
     }
     size_t spIncrement() const {
         return spIncrement_;