PPC/s390: [Interpreter] Collect type feedback for 'new' in the bytecode handler

src/builtins/ppc/builtins-ppc.cc

 // Copyright 2014 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_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1195 matching lines @@
   //  -- r3 : the number of arguments (not including the receiver)
   //  -- r5 : the address of the first argument to be pushed. Subsequent
   //          arguments should be consecutive above this, in the same order as
   //          they are to be pushed onto the stack.
   //  -- r4 : the target to call (can be any Object).
   // -----------------------------------
 
   // Calculate number of arguments (add one for receiver).
   __ addi(r6, r3, Operand(1));
 
+  // TODO(mythria): Add a stack check before pushing arguments.
   // Push the arguments.
   Generate_InterpreterPushArgs(masm, r5, r6, r7);
 
   // Call the target.
   if (function_type == CallableType::kJSFunction) {
     __ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
                                                       tail_call_mode),
             RelocInfo::CODE_TARGET);
   } else {
     DCHECK_EQ(function_type, CallableType::kAny);
     __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
                                               tail_call_mode),
             RelocInfo::CODE_TARGET);
   }
 }
 
 // static
-void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
+void Builtins::Generate_InterpreterPushArgsAndConstructImpl(
+    MacroAssembler* masm, CallableType construct_type) {
   // ----------- S t a t e -------------
   // -- r3 : argument count (not including receiver)
   // -- r6 : new target
   // -- r4 : constructor to call
-  // -- r5 : address of the first argument
+  // -- r5 : allocation site feedback if available, undefined otherwise.
+  // -- r7 : address of the first argument
   // -----------------------------------
 
   // Push a slot for the receiver to be constructed.
   __ li(r0, Operand::Zero());
   __ push(r0);
 
   // Push the arguments (skip if none).
   Label skip;
   __ cmpi(r3, Operand::Zero());
   __ beq(&skip);
-  Generate_InterpreterPushArgs(masm, r5, r3, r7);
+  Generate_InterpreterPushArgs(masm, r7, r3, r8);
   __ bind(&skip);
 
-  // Call the constructor with r3, r4, and r6 unmodified.
-  __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
+  __ AssertUndefinedOrAllocationSite(r5, r8);
+  if (construct_type == CallableType::kJSFunction) {
+    __ AssertFunction(r4);
+
+    // Tail call to the function-specific construct stub (still in the caller
+    // context at this point).
+    __ LoadP(r7, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
+    __ LoadP(r7, FieldMemOperand(r7, SharedFunctionInfo::kConstructStubOffset));
+    // Jump to the construct function.
+    __ addi(ip, r7, Operand(Code::kHeaderSize - kHeapObjectTag));
+    __ Jump(ip);
+
+  } else {
+    DCHECK_EQ(construct_type, CallableType::kAny);
+    // Call the constructor with r3, r4, and r6 unmodified.
+    __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
+  }
 }
 
 void Builtins::Generate_InterpreterEnterBytecodeDispatch(MacroAssembler* masm) {
   // Set the return address to the correct point in the interpreter entry
   // trampoline.
   Smi* interpreter_entry_return_pc_offset(
       masm->isolate()->heap()->interpreter_entry_return_pc_offset());
   DCHECK_NE(interpreter_entry_return_pc_offset, Smi::FromInt(0));
   __ Move(r5, masm->isolate()->builtins()->InterpreterEntryTrampoline());
   __ addi(r0, r5, Operand(interpreter_entry_return_pc_offset->value() +
@@ skipping 1753 matching lines @@
     __ CallRuntime(Runtime::kThrowStackOverflow);
     __ bkpt(0);
   }
 }
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC