PPC/s390: Inline Array.prototype.forEach in TurboFan

src/builtins/s390/builtins-s390.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_S390
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1676 matching lines @@
 }
 
 void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
   Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
 }
 
 void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
   Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
 }
 
+void Builtins::Generate_NotifyBuiltinContinuation(MacroAssembler* masm) {
+  {
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
+    // Preserve possible return result from lazy deopt.
+    __ push(r2);
+    // Pass the function and deoptimization type to the runtime system.
+    __ CallRuntime(Runtime::kNotifyStubFailure, false);
+    __ pop(r2);
+  }
+
+  __ AddP(sp, sp, Operand(kPointerSize));  // Ignore state
+  __ Ret();                                // Jump to ContinueToBuiltin stub
+}
+
+namespace {
+void Generate_ContinueToBuiltinHelper(MacroAssembler* masm,
+                                      bool java_script_builtin,
+                                      bool with_result) {
+  const RegisterConfiguration* config(RegisterConfiguration::Turbofan());
+  int allocatable_register_count = config->num_allocatable_general_registers();
+  if (with_result) {
+    // Overwrite the hole inserted by the deoptimizer with the return value from
+    // the LAZY deopt point.
+    __ StoreP(
+        r2, MemOperand(
+                sp, config->num_allocatable_general_registers() * kPointerSize +
+                        BuiltinContinuationFrameConstants::kFixedFrameSize));
+  }
+  for (int i = allocatable_register_count - 1; i >= 0; --i) {
+    int code = config->GetAllocatableGeneralCode(i);
+    __ Pop(Register::from_code(code));
+    if (java_script_builtin && code == kJavaScriptCallArgCountRegister.code()) {
+      __ SmiUntag(Register::from_code(code));
+    }
+  }
+  __ LoadP(
+      fp,
+      MemOperand(sp, BuiltinContinuationFrameConstants::kFixedFrameSizeFromFp));
+  __ Pop(ip);
+  __ AddP(sp, sp,
+          Operand(BuiltinContinuationFrameConstants::kFixedFrameSizeFromFp));
+  __ Pop(r0);
+  __ LoadRR(r14, r0);
+  __ AddP(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag));
+  __ Jump(ip);
+}
+}  // namespace
+
+void Builtins::Generate_ContinueToCodeStubBuiltin(MacroAssembler* masm) {
+  Generate_ContinueToBuiltinHelper(masm, false, false);
+}
+
+void Builtins::Generate_ContinueToCodeStubBuiltinWithResult(
+    MacroAssembler* masm) {
+  Generate_ContinueToBuiltinHelper(masm, false, true);
+}
+
+void Builtins::Generate_ContinueToJavaScriptBuiltin(MacroAssembler* masm) {
+  Generate_ContinueToBuiltinHelper(masm, true, false);
+}
+
+void Builtins::Generate_ContinueToJavaScriptBuiltinWithResult(
+    MacroAssembler* masm) {
+  Generate_ContinueToBuiltinHelper(masm, true, true);
+}
+
 static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
                                              Deoptimizer::BailoutType type) {
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
     // Pass the function and deoptimization type to the runtime system.
     __ LoadSmiLiteral(r2, Smi::FromInt(static_cast<int>(type)));
     __ push(r2);
     __ CallRuntime(Runtime::kNotifyDeoptimized);
   }
 
@@ skipping 1473 matching lines @@
   // Now jump to the instructions of the returned code object.
   __ Jump(ip);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390