[strong] Check arity of functions

src/arm64/builtins-arm64.cc

Index: src/arm64/builtins-arm64.cc
diff --git a/src/arm64/builtins-arm64.cc b/src/arm64/builtins-arm64.cc
index 3df8896576278835e77061408133ea318ae9c865..8d2a67af8cd0dfc0123abbb7de321f96b56c3933 100644
--- a/src/arm64/builtins-arm64.cc
+++ b/src/arm64/builtins-arm64.cc
@@ -1733,13 +1733,31 @@ void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
 
   {  // Too few parameters: Actual < expected
     __ Bind(&too_few);
-    EnterArgumentsAdaptorFrame(masm);
 
     Register copy_from = x10;
     Register copy_end = x11;
     Register copy_to = x12;
     Register scratch1 = x13, scratch2 = x14;
 
+    // If the function is strong we need to throw an error.
+    Label weak_function;
+    __ Ldr(scratch1,
+           FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset));
+    __ Ldr(scratch2.W(),
+           FieldMemOperand(scratch1, SharedFunctionInfo::kCompilerHintsOffset));
+    __ TestAndBranchIfAllClear(scratch2.W(),
+                               (1 << SharedFunctionInfo::kStrongModeFunction),
+                               &weak_function);
+
+    {
+      FrameScope frame(masm, StackFrame::MANUAL);
+      EnterArgumentsAdaptorFrame(masm);
+      __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments, 0);
+    }
+
+    __ bind(&weak_function);
+    EnterArgumentsAdaptorFrame(masm);
+
     __ Lsl(argc_expected, argc_expected, kPointerSizeLog2);
     __ Lsl(argc_actual, argc_actual, kPointerSizeLog2);