Embedded constant pools.

src/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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug.h"
@@ skipping 215 matching lines @@
   __ bne(&convert_argument, cr0);
   __ mr(argument, r3);
   __ IncrementCounter(counters->string_ctor_conversions(), 1, r6, r7);
   __ b(&argument_is_string);
 
   // Invoke the conversion builtin and put the result into r5.
   __ bind(&convert_argument);
   __ push(function);  // Preserve the function.
   __ IncrementCounter(counters->string_ctor_conversions(), 1, r6, r7);
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     __ push(r3);
     __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION);
   }
   __ pop(function);
   __ mr(argument, r3);
   __ b(&argument_is_string);
 
   // Load the empty string into r5, remove the receiver from the
   // stack, and jump back to the case where the argument is a string.
   __ bind(&no_arguments);
   __ LoadRoot(argument, Heap::kempty_stringRootIndex);
   __ Drop(1);
   __ b(&argument_is_string);
 
   // At this point the argument is already a string. Call runtime to
   // create a string wrapper.
   __ bind(&gc_required);
   __ IncrementCounter(counters->string_ctor_gc_required(), 1, r6, r7);
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     __ push(argument);
     __ CallRuntime(Runtime::kNewStringWrapper, 1);
   }
   __ Ret();
 }
 
 
 static void CallRuntimePassFunction(MacroAssembler* masm,
                                     Runtime::FunctionId function_id) {
-  FrameScope scope(masm, StackFrame::INTERNAL);
+  FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
   // Push a copy of the function onto the stack.
   // Push function as parameter to the runtime call.
   __ Push(r4, r4);
 
   __ CallRuntime(function_id, 1);
   // Restore reciever.
   __ Pop(r4);
 }
 
 
@@ skipping 70 matching lines @@
   //  -- sp[...]: constructor arguments
   // -----------------------------------
 
   // Should never create mementos for api functions.
   DCHECK(!is_api_function || !create_memento);
 
   Isolate* isolate = masm->isolate();
 
   // Enter a construct frame.
   {
-    FrameScope scope(masm, StackFrame::CONSTRUCT);
+    FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT);
 
     if (create_memento) {
       __ AssertUndefinedOrAllocationSite(r5, r7);
       __ push(r5);
     }
 
     // Preserve the two incoming parameters on the stack.
     __ SmiTag(r3);
     __ Push(r3, r4);
 
@@ skipping 378 matching lines @@
   //  -- r5     : allocation site or undefined
   //  -- r6     : original constructor
   //  -- lr     : return address
   //  -- sp[...]: constructor arguments
   // -----------------------------------
 
   // TODO(dslomov): support pretenuring
   CHECK(!FLAG_pretenuring_call_new);
 
   {
-    FrameScope scope(masm, StackFrame::CONSTRUCT);
+    FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT);
 
     // Smi-tagged arguments count.
     __ mr(r7, r3);
     __ SmiTag(r7, SetRC);
 
     // receiver is the hole.
     __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
 
     // smi arguments count, new.target, receiver
     __ Push(r7, r6, ip);
@@ skipping 188 matching lines @@
 }
 
 
 void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   CallRuntimePassFunction(masm, Runtime::kCompileLazy);
   GenerateTailCallToReturnedCode(masm);
 }
 
 
 static void CallCompileOptimized(MacroAssembler* masm, bool concurrent) {
-  FrameScope scope(masm, StackFrame::INTERNAL);
+  FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
   // Push a copy of the function onto the stack.
   // Push function as parameter to the runtime call.
   __ Push(r4, r4);
   // Whether to compile in a background thread.
   __ LoadRoot(
       r0, concurrent ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex);
   __ push(r0);
 
   __ CallRuntime(Runtime::kCompileOptimized, 2);
   // Restore receiver.
@@ skipping 97 matching lines @@
 
 
 void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) {
   Generate_MarkCodeAsExecutedOnce(masm);
 }
 
 
 static void Generate_NotifyStubFailureHelper(MacroAssembler* masm,
                                              SaveFPRegsMode save_doubles) {
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
 
     // Preserve registers across notification, this is important for compiled
     // stubs that tail call the runtime on deopts passing their parameters in
     // registers.
     __ MultiPush(kJSCallerSaved | kCalleeSaved);
     // Pass the function and deoptimization type to the runtime system.
     __ CallRuntime(Runtime::kNotifyStubFailure, 0, save_doubles);
     __ MultiPop(kJSCallerSaved | kCalleeSaved);
   }
 
   __ addi(sp, sp, Operand(kPointerSize));  // Ignore state
   __ blr();                                // Jump to miss handler
 }
 
 
 void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
   Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
 }
 
 
 void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
   Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
 }
 
 
 static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
                                              Deoptimizer::BailoutType type) {
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     // Pass the function and deoptimization type to the runtime system.
     __ LoadSmiLiteral(r3, Smi::FromInt(static_cast<int>(type)));
     __ push(r3);
     __ CallRuntime(Runtime::kNotifyDeoptimized, 1);
   }
 
   // Get the full codegen state from the stack and untag it -> r9.
   __ LoadP(r9, MemOperand(sp, 0 * kPointerSize));
   __ SmiUntag(r9);
   // Switch on the state.
@@ skipping 27 matching lines @@
 
 void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) {
   Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
 }
 
 
 void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
   // Lookup the function in the JavaScript frame.
   __ LoadP(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     // Pass function as argument.
     __ push(r3);
     __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1);
   }
 
   // If the code object is null, just return to the unoptimized code.
   Label skip;
   __ CmpSmiLiteral(r3, Smi::FromInt(0), r0);
   __ bne(&skip);
   __ Ret();
 
   __ bind(&skip);
 
   // Load deoptimization data from the code object.
   // <deopt_data> = <code>[#deoptimization_data_offset]
   __ LoadP(r4, FieldMemOperand(r3, Code::kDeoptimizationDataOffset));
 
   {
+    ConstantPoolUnavailableScope constant_pool_unavailable(masm);
     __ addi(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag));  // Code start
 
+    if (FLAG_enable_embedded_constant_pool) {
+      __ LoadConstantPoolPointerRegisterFromCodeTargetAddress(r3);
+    }
+
     // Load the OSR entrypoint offset from the deoptimization data.
     // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset]
     __ LoadP(r4, FieldMemOperand(
                      r4, FixedArray::OffsetOfElementAt(
                              DeoptimizationInputData::kOsrPcOffsetIndex)));
     __ SmiUntag(r4);
 
     // Compute the target address = code start + osr_offset
     __ add(r0, r3, r4);
 
     // And "return" to the OSR entry point of the function.
     __ mtlr(r0);
     __ blr();
   }
 }
 
 
 void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) {
   // We check the stack limit as indicator that recompilation might be done.
   Label ok;
   __ LoadRoot(ip, Heap::kStackLimitRootIndex);
   __ cmpl(sp, ip);
   __ bge(&ok);
   {
-    FrameScope scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     __ CallRuntime(Runtime::kStackGuard, 0);
   }
   __ Jump(masm->isolate()->builtins()->OnStackReplacement(),
           RelocInfo::CODE_TARGET);
 
   __ bind(&ok);
   __ Ret();
 }
 
 
@@ skipping 70 matching lines @@
     __ beq(&use_global_proxy);
 
     STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
     __ CompareObjectType(r5, r6, r6, FIRST_SPEC_OBJECT_TYPE);
     __ bge(&shift_arguments);
 
     __ bind(&convert_to_object);
 
     {
       // Enter an internal frame in order to preserve argument count.
-      FrameScope scope(masm, StackFrame::INTERNAL);
+      FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
       __ SmiTag(r3);
       __ Push(r3, r5);
       __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
       __ mr(r5, r3);
 
       __ pop(r3);
       __ SmiUntag(r3);
 
       // Exit the internal frame.
     }
@@ skipping 146 matching lines @@
   __ SmiUntag(r3, key);
 }
 
 
 // Used by FunctionApply and ReflectApply
 static void Generate_ApplyHelper(MacroAssembler* masm, bool targetIsArgument) {
   const int kFormalParameters = targetIsArgument ? 3 : 2;
   const int kStackSize = kFormalParameters + 1;
 
   {
-    FrameScope frame_scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL);
     const int kArgumentsOffset = kFPOnStackSize + kPCOnStackSize;
     const int kReceiverOffset = kArgumentsOffset + kPointerSize;
     const int kFunctionOffset = kReceiverOffset + kPointerSize;
 
     __ LoadP(r3, MemOperand(fp, kFunctionOffset));  // get the function
     __ push(r3);
     __ LoadP(r3, MemOperand(fp, kArgumentsOffset));  // get the args array
     __ push(r3);
     if (targetIsArgument) {
       __ InvokeBuiltin(Builtins::REFLECT_APPLY_PREPARE, CALL_FUNCTION);
@@ skipping 108 matching lines @@
   __ addi(sp, sp, Operand(kStackSize * kPointerSize));
   __ blr();
 }
 
 
 static void Generate_ConstructHelper(MacroAssembler* masm) {
   const int kFormalParameters = 3;
   const int kStackSize = kFormalParameters + 1;
 
   {
-    FrameScope frame_scope(masm, StackFrame::INTERNAL);
+    FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL);
     const int kNewTargetOffset = kFPOnStackSize + kPCOnStackSize;
     const int kArgumentsOffset = kNewTargetOffset + kPointerSize;
     const int kFunctionOffset = kArgumentsOffset + kPointerSize;
 
     // If newTarget is not supplied, set it to constructor
     Label validate_arguments;
     __ LoadP(r3, MemOperand(fp, kNewTargetOffset));
     __ CompareRoot(r3, Heap::kUndefinedValueRootIndex);
     __ bne(&validate_arguments);
     __ LoadP(r3, MemOperand(fp, kFunctionOffset));
@@ skipping 79 matching lines @@
   __ cmp(r8, r0);
   __ ble(stack_overflow);  // Signed comparison.
 }
 
 
 static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) {
   __ SmiTag(r3);
   __ LoadSmiLiteral(r7, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
   __ mflr(r0);
   __ push(r0);
-  __ Push(fp, r7, r4, r3);
+  if (FLAG_enable_embedded_constant_pool) {
+    __ Push(fp, kConstantPoolRegister, r7, r4, r3);
+  } else {
+    __ Push(fp, r7, r4, r3);
+  }
   __ addi(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp +
                           kPointerSize));
 }
 
 
 static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- r3 : result being passed through
   // -----------------------------------
   // Get the number of arguments passed (as a smi), tear down the frame and
@@ skipping 160 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC