[crankshaft] Pass new.target to direct function calls.

src/crankshaft/mips64/lithium-codegen-mips64.cc

Index: src/crankshaft/mips64/lithium-codegen-mips64.cc
diff --git a/src/crankshaft/mips64/lithium-codegen-mips64.cc b/src/crankshaft/mips64/lithium-codegen-mips64.cc
index ca809bd69512b2f1ae39918fe3a9070549c6b4dd..22650ee9fec1447691c561fcb4c4e0ddce8779a6 100644
--- a/src/crankshaft/mips64/lithium-codegen-mips64.cc
+++ b/src/crankshaft/mips64/lithium-codegen-mips64.cc
@@ -3533,7 +3533,8 @@ void LCodeGen::CallKnownFunction(Handle<JSFunction> function,
     // Change context.
     __ ld(cp, FieldMemOperand(function_reg, JSFunction::kContextOffset));
 
-    // Always initialize a0 to the number of actual arguments.
+    // Always initialize new target and number of actual arguments.
+    __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
     __ li(a0, Operand(arity));
 
     // Invoke function.
@@ -3960,11 +3961,13 @@ void LCodeGen::DoCallJSFunction(LCallJSFunction* instr) {
   DCHECK(ToRegister(instr->function()).is(a1));
   DCHECK(ToRegister(instr->result()).is(v0));
 
-  __ li(a0, Operand(instr->arity()));
-
   // Change context.
   __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
 
+  // Always initialize new target and number of actual arguments.
+  __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
+  __ li(a0, Operand(instr->arity()));
+
   // Load the code entry address
   __ ld(at, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
   __ Call(at);