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

runtime/vm/stub_code_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
@@ skipping 546 matching lines @@
   __ j(NOT_EQUAL, call_target_function);
   __ EnterStubFrame();
   // Load the receiver.
   __ movq(RDI, FieldAddress(R10, ArgumentsDescriptor::count_offset()));
   __ movq(RAX, Address(RBP, RDI, TIMES_HALF_WORD_SIZE,
                        kParamEndSlotFromFp * kWordSize));
   __ pushq(Immediate(0));  // Setup space on stack for result.
   __ pushq(RAX);           // Receiver.
   __ pushq(RBX);           // ICData/MegamorphicCache.
   __ pushq(R10);           // Arguments descriptor array.
+
+  // Adjust arguments count.
+  __ cmpq(FieldAddress(R10, ArgumentsDescriptor::type_args_len_offset()),
+          Immediate(0));
   __ movq(R10, RDI);
-  // EDX: Smi-tagged arguments array length.
+  Label args_count_ok;
+  __ j(EQUAL, &args_count_ok, Assembler::kNearJump);
+  __ addq(R10, Immediate(Smi::RawValue(1)));  // Include the type arguments.
+  __ Bind(&args_count_ok);
+
+  // R10: Smi-tagged arguments array length.
   PushArgumentsArray(assembler);
   const intptr_t kNumArgs = 4;
   __ CallRuntime(kInvokeNoSuchMethodDispatcherRuntimeEntry, kNumArgs);
   __ Drop(4);
   __ popq(RAX);  // Return value.
   __ LeaveStubFrame();
   __ ret();
 }
 
 
@@ skipping 628 matching lines @@
   __ EnterStubFrame();
 
   // Load the receiver.
   __ movq(R13, FieldAddress(R10, ArgumentsDescriptor::count_offset()));
   __ movq(RAX, Address(RBP, R13, TIMES_4, kParamEndSlotFromFp * kWordSize));
 
   __ pushq(Immediate(0));  // Result slot.
   __ pushq(RAX);           // Receiver.
   __ pushq(R10);           // Arguments descriptor array.
 
-  __ movq(R10, R13);  // Smi-tagged arguments array length.
+  // Adjust arguments count.
+  __ cmpq(FieldAddress(R10, ArgumentsDescriptor::type_args_len_offset()),
+          Immediate(0));
+  __ movq(R10, R13);
+  Label args_count_ok;
+  __ j(EQUAL, &args_count_ok, Assembler::kNearJump);
+  __ addq(R10, Immediate(Smi::RawValue(1)));  // Include the type arguments.
+  __ Bind(&args_count_ok);
+
+  // R10: Smi-tagged arguments array length.
   PushArgumentsArray(assembler);
 
   const intptr_t kNumArgs = 3;
   __ CallRuntime(kInvokeClosureNoSuchMethodRuntimeEntry, kNumArgs);
   // noSuchMethod on closures always throws an error, so it will never return.
   __ int3();
 }
 
 
 // Cannot use function object from ICData as it may be the inlined
@@ skipping 1070 matching lines @@
 }
 
 
 void StubCode::GenerateAsynchronousGapMarkerStub(Assembler* assembler) {
   __ int3();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64