A64: Synchronize with r17525.

src/a64/macro-assembler-a64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_A64
 
 #include "bootstrapper.h"
 #include "codegen.h"
 #include "cpu-profiler.h"
 #include "debug.h"
+#include "isolate-inl.h"
 #include "runtime.h"
 
 namespace v8 {
 namespace internal {
 
 // Define a fake double underscore to use with the ASM_UNIMPLEMENTED macros.
 #define __
 
 
 MacroAssembler::MacroAssembler(Isolate* arg_isolate,
@@ skipping 578 matching lines @@
     // but if we keep it matching StackPointer, the simulator can detect memory
     // accesses in the now-free part of the stack.
     Mov(csp, StackPointer());
   }
 }
 
 
 void MacroAssembler::PushMultipleTimes(int count, Register src) {
   int size = src.SizeInBytes();
 
+  // TODO(all): Use a loop when optimizing for size.
+  TODO_UNIMPLEMENTED("PushMultipleTimes: Support --optimize-for-size.");
+
   PrepareForPush(count, size);
   // Push up to four registers at a time if possible because if the current
   // stack pointer is csp and the register size is 32, registers must be pushed
   // in blocks of four in order to maintain the 16-byte alignment for csp.
   while (count >= 4) {
     PushHelper(4, size, src, src, src, src);
     count -= 4;
   }
   if (count >= 2) {
     PushHelper(2, size, src, src, NoReg, NoReg);
@@ skipping 1920 matching lines @@
   if (frame_mode == BUILD_STUB_FRAME) {
     ASSERT(StackPointer().Is(jssp));
     // TODO(jbramley): Does x1 contain a JSFunction here, or does it already
     // have the special STUB smi?
     __ Mov(Tmp0(), Operand(Smi::FromInt(StackFrame::STUB)));
     // Compiled stubs don't age, and so they don't need the predictable code
     // ageing sequence.
     __ Push(lr, fp, cp, Tmp0());
     __ Add(fp, jssp, 2 * kPointerSize);
   } else {
-    TODO_UNIMPLEMENTED("Prologue: Implement FLAG_optimize_for_size.");
+    TODO_UNIMPLEMENTED("Prologue: Support IsCodePreAgingActive().");
     __ EmitFrameSetupForCodeAgePatching();
   }
 }
 
 
 void MacroAssembler::EnterFrame(StackFrame::Type type) {
   ASSERT(jssp.Is(StackPointer()));
   Push(lr, fp, cp);
   Mov(Tmp1(), Operand(Smi::FromInt(type)));
   Mov(Tmp0(), Operand(CodeObject()));
@@ skipping 1478 matching lines @@
 
 void MacroAssembler::JumpIfBlack(Register object,
                                  Register scratch0,
                                  Register scratch1,
                                  Label* on_black) {
   ASSERT(strcmp(Marking::kBlackBitPattern, "10") == 0);
   HasColor(object, scratch0, scratch1, on_black, 1, 0);  // kBlackBitPattern.
 }
 
 
+void MacroAssembler::JumpIfDictionaryInPrototypeChain(
+    Register object,
+    Register scratch0,
+    Register scratch1,
+    Label* found) {
+  ASSERT(!AreAliased(object, scratch0, scratch1));
+  Factory* factory = isolate()->factory();
+  Register current = scratch0;
+  Label loop_again;
+
+  // Scratch contains elements pointer.
+  Mov(current, object);
+
+  // Loop based on the map going up the prototype chain.
+  Bind(&loop_again);
+  Ldr(current, FieldMemOperand(current, HeapObject::kMapOffset));
+  Ldrb(scratch1, FieldMemOperand(current, Map::kBitField2Offset));
+  Ubfx(scratch1, scratch1, Map::kElementsKindShift, Map::kElementsKindBitCount);
+  CompareAndBranch(scratch1, DICTIONARY_ELEMENTS, eq, found);
+  Ldr(current, FieldMemOperand(current, Map::kPrototypeOffset));
+  CompareAndBranch(current, Operand(factory->null_value()), ne, &loop_again);
+}
+
+
 void MacroAssembler::GetRelocatedValueLocation(Register ldr_location,
                                                Register result) {
   ASSERT(!result.Is(ldr_location));
   const uint32_t kLdrLitOffset_lsb = 5;
   const uint32_t kLdrLitOffset_width = 19;
   Ldr(result, MemOperand(ldr_location));
   if (emit_debug_code()) {
     And(result, result, LoadLiteralFMask);
     Cmp(result, LoadLiteralFixed);
     Check(eq, kTheInstructionToPatchShouldBeAnLdrLiteral);
@@ skipping 629 matching lines @@
   }
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64