Pass type argument vector to generic functions (if --reify-generic-functions is

runtime/vm/stub_code_arm64.cc

Index: runtime/vm/stub_code_arm64.cc
diff --git a/runtime/vm/stub_code_arm64.cc b/runtime/vm/stub_code_arm64.cc
index 53ee64b428a35ef0a1fd81535dac8d070f8b758c..4ee65866224b7d9c434b8fe15d91f1bc33a3f2bb 100644
--- a/runtime/vm/stub_code_arm64.cc
+++ b/runtime/vm/stub_code_arm64.cc
@@ -627,6 +627,13 @@ static void GenerateDispatcherCode(Assembler* assembler,
   __ Push(R6);  // Receiver.
   __ Push(R5);  // ICData/MegamorphicCache.
   __ Push(R4);  // Arguments descriptor.
+
+  // Adjust arguments count.
+  __ LoadFieldFromOffset(R3, R4, ArgumentsDescriptor::type_args_len_offset());
+  __ AddImmediate(TMP, R2, Smi::RawValue(1));  // Include the type arguments.
+  __ cmp(R3, Operand(0));
+  __ csinc(R2, R2, TMP, EQ);  // R2 <- (R3 == 0) ? R2 : TMP.
+
   // R2: Smi-tagged arguments array length.
   PushArgumentsArray(assembler);
   const intptr_t kNumArgs = 4;
@@ -1285,6 +1292,12 @@ void StubCode::GenerateCallClosureNoSuchMethodStub(Assembler* assembler) {
   __ Push(R6);
   __ Push(R4);
 
+  // Adjust arguments count.
+  __ LoadFieldFromOffset(R3, R4, ArgumentsDescriptor::type_args_len_offset());
+  __ AddImmediate(TMP, R2, Smi::RawValue(1));  // Include the type arguments.
+  __ cmp(R3, Operand(0));
+  __ csinc(R2, R2, TMP, EQ);  // R2 <- (R3 == 0) ? R2 : TMP.
+
   // R2: Smi-tagged arguments array length.
   PushArgumentsArray(assembler);