[turbofan] Switch passing of new.target to register.

src/arm64/builtins-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 270 matching lines @@
     __ CallRuntime(Runtime::kNewObject, 2);
     __ Pop(x2);
   }
   __ Str(x2, FieldMemOperand(x0, JSValue::kValueOffset));
   __ Ret();
 }
 
 
 static void CallRuntimePassFunction(MacroAssembler* masm,
                                     Runtime::FunctionId function_id) {
+  // ----------- S t a t e -------------
+  //  -- x1 : target function (preserved for callee)
+  //  -- x3 : new target (preserved for callee)
+  // -----------------------------------
+
   FrameScope scope(masm, StackFrame::INTERNAL);
-  //   - Push a copy of the function onto the stack.
-  //   - Push another copy as a parameter to the runtime call.
-  __ Push(x1, x1);
+  // Push a copy of the target function and the new target.
+  // Push another copy as a parameter to the runtime call.
+  __ Push(x1, x3, x1);
 
   __ CallRuntime(function_id, 1);
 
-  //   - Restore receiver.
-  __ Pop(x1);
+  // Restore target function and new target.
+  __ Pop(x3, x1);
 }
 
 
 static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
   __ Ldr(x2, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
   __ Ldr(x2, FieldMemOperand(x2, SharedFunctionInfo::kCodeOffset));
   __ Add(x2, x2, Code::kHeaderSize - kHeapObjectTag);
   __ Br(x2);
 }
 
@@ skipping 231 matching lines @@
     }
 
     // Set up pointer to last argument.
     __ Add(x2, fp, StandardFrameConstants::kCallerSPOffset);
 
     // Copy arguments and receiver to the expression stack.
     // Copy 2 values every loop to use ldp/stp.
     // x0: number of arguments
     // x1: constructor function
     // x2: address of last argument (caller sp)
+    // x3: new target
     // jssp[0]: receiver
     // jssp[1]: receiver
     // jssp[2]: new.target
     // jssp[3]: number of arguments (smi-tagged)
     // Compute the start address of the copy in x3.
-    __ Add(x3, x2, Operand(argc, LSL, kPointerSizeLog2));
+    __ Add(x4, x2, Operand(argc, LSL, kPointerSizeLog2));
     Label loop, entry, done_copying_arguments;
     __ B(&entry);
     __ Bind(&loop);
-    __ Ldp(x10, x11, MemOperand(x3, -2 * kPointerSize, PreIndex));
+    __ Ldp(x10, x11, MemOperand(x4, -2 * kPointerSize, PreIndex));
     __ Push(x11, x10);
     __ Bind(&entry);
-    __ Cmp(x3, x2);
+    __ Cmp(x4, x2);
     __ B(gt, &loop);
     // Because we copied values 2 by 2 we may have copied one extra value.
     // Drop it if that is the case.
     __ B(eq, &done_copying_arguments);
     __ Drop(1);
     __ Bind(&done_copying_arguments);
 
     // Call the function.
     // x0: number of arguments
     // x1: constructor function
+    // x3: new target
     if (is_api_function) {
       __ Ldr(cp, FieldMemOperand(constructor, JSFunction::kContextOffset));
       Handle<Code> code =
           masm->isolate()->builtins()->HandleApiCallConstruct();
       __ Call(code, RelocInfo::CODE_TARGET);
     } else {
       ParameterCount actual(argc);
-      __ InvokeFunction(constructor, actual, CALL_FUNCTION, NullCallWrapper());
+      __ InvokeFunction(constructor, new_target, actual, CALL_FUNCTION,
+                        NullCallWrapper());
     }
 
     // Store offset of return address for deoptimizer.
     if (create_implicit_receiver && !is_api_function) {
       masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset());
     }
 
     // Restore the context from the frame.
     // x0: result
     // jssp[0]: receiver
@@ skipping 347 matching lines @@
   // For now, we are relying on the fact that make_code_young doesn't do any
   // garbage collection which allows us to save/restore the registers without
   // worrying about which of them contain pointers. We also don't build an
   // internal frame to make the code fast, since we shouldn't have to do stack
   // crawls in MakeCodeYoung. This seems a bit fragile.
 
   // The following caller-saved registers must be saved and restored when
   // calling through to the runtime:
   //   x0 - The address from which to resume execution.
   //   x1 - isolate
+  //   x3 - new target
   //   lr - The return address for the JSFunction itself. It has not yet been
   //        preserved on the stack because the frame setup code was replaced
   //        with a call to this stub, to handle code ageing.
   {
     FrameScope scope(masm, StackFrame::MANUAL);
-    __ Push(x0, x1, fp, lr);
+    __ Push(x0, x1, x3, fp, lr);
     __ Mov(x1, ExternalReference::isolate_address(masm->isolate()));
     __ CallCFunction(
         ExternalReference::get_make_code_young_function(masm->isolate()), 2);
-    __ Pop(lr, fp, x1, x0);
+    __ Pop(lr, fp, x3, x1, x0);
   }
 
   // The calling function has been made young again, so return to execute the
   // real frame set-up code.
   __ Br(x0);
 }
 
 #define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C)                 \
 void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking(  \
     MacroAssembler* masm) {                                  \
@@ skipping 10 matching lines @@
 void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) {
   // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact
   // that make_code_young doesn't do any garbage collection which allows us to
   // save/restore the registers without worrying about which of them contain
   // pointers.
 
   // The following caller-saved registers must be saved and restored when
   // calling through to the runtime:
   //   x0 - The address from which to resume execution.
   //   x1 - isolate
+  //   x3 - new target
   //   lr - The return address for the JSFunction itself. It has not yet been
   //        preserved on the stack because the frame setup code was replaced
   //        with a call to this stub, to handle code ageing.
   {
     FrameScope scope(masm, StackFrame::MANUAL);
-    __ Push(x0, x1, fp, lr);
+    __ Push(x0, x1, x3, fp, lr);
     __ Mov(x1, ExternalReference::isolate_address(masm->isolate()));
     __ CallCFunction(
         ExternalReference::get_mark_code_as_executed_function(
             masm->isolate()), 2);
-    __ Pop(lr, fp, x1, x0);
+    __ Pop(lr, fp, x3, x1, x0);
 
     // Perform prologue operations usually performed by the young code stub.
     __ EmitFrameSetupForCodeAgePatching(masm);
   }
 
   // Jump to point after the code-age stub.
   __ Add(x0, x0, kNoCodeAgeSequenceLength);
   __ Br(x0);
 }
 
@@ skipping 524 matching lines @@
 
   // ----------- S t a t e -------------
   //  -- x0 : the number of arguments (not including the receiver)
   //  -- x1 : the function to call (checked to be a JSFunction)
   //  -- x2 : the shared function info.
   //  -- cp : the function context.
   // -----------------------------------
 
   __ Ldrsw(
       x2, FieldMemOperand(x2, SharedFunctionInfo::kFormalParameterCountOffset));
-  __ Ldr(x3, FieldMemOperand(x1, JSFunction::kCodeEntryOffset));
+  __ Ldr(x4, FieldMemOperand(x1, JSFunction::kCodeEntryOffset));
   ParameterCount actual(x0);
   ParameterCount expected(x2);
-  __ InvokeCode(x3, expected, actual, JUMP_FUNCTION, NullCallWrapper());
+  __ InvokeCode(x4, no_reg, expected, actual, JUMP_FUNCTION, NullCallWrapper());
 
   // The function is a "classConstructor", need to raise an exception.
   __ bind(&class_constructor);
   {
     FrameScope frame(masm, StackFrame::INTERNAL);
     __ CallRuntime(Runtime::kThrowConstructorNonCallableError, 0);
   }
 }
 
 
@@ skipping 366 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM