Compile FastCloneShallowArrayStub using Crankshaft.

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 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 25 matching lines @@
 #include "regexp-macro-assembler.h"
 #include "runtime.h"
 #include "stub-cache.h"
 #include "codegen.h"
 #include "runtime.h"
 
 namespace v8 {
 namespace internal {
 
 
+void FastCloneShallowArrayStub::InitializeInterfaceDescriptor(
+    Isolate* isolate,
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { eax, ebx, ecx };
+  descriptor->register_param_count_ = 3;
+  descriptor->register_params_ = registers;
+  descriptor->stack_parameter_count_ = NULL;
+  descriptor->deoptimization_handler_ =
+      Runtime::FunctionForId(Runtime::kCreateArrayLiteralShallow)->entry;
+}
+
+
 void FastCloneShallowObjectStub::InitializeInterfaceDescriptor(
     Isolate* isolate,
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { eax, ebx, ecx, edx };
   descriptor->register_param_count_ = 4;
   descriptor->register_params_ = registers;
   descriptor->stack_parameter_count_ = NULL;
   descriptor->deoptimization_handler_ =
       Runtime::FunctionForId(Runtime::kCreateObjectLiteralShallow)->entry;
 }
@@ skipping 330 matching lines @@
   // Return and remove the on-stack parameters.
   __ mov(esi, eax);
   __ ret(2 * kPointerSize);
 
   // Need to collect. Call into runtime system.
   __ bind(&gc);
   __ TailCallRuntime(Runtime::kPushBlockContext, 2, 1);
 }
 
 
-static void GenerateFastCloneShallowArrayCommon(
-    MacroAssembler* masm,
-    int length,
-    FastCloneShallowArrayStub::Mode mode,
-    AllocationSiteMode allocation_site_mode,
-    Label* fail) {
-  // Registers on entry:
-  //
-  // ecx: boilerplate literal array.
-  ASSERT(mode != FastCloneShallowArrayStub::CLONE_ANY_ELEMENTS);
-
-  // All sizes here are multiples of kPointerSize.
-  int elements_size = 0;
-  if (length > 0) {
-    elements_size = mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS
-        ? FixedDoubleArray::SizeFor(length)
-        : FixedArray::SizeFor(length);
-  }
-  int size = JSArray::kSize;
-  int allocation_info_start = size;
-  if (allocation_site_mode == TRACK_ALLOCATION_SITE) {
-    size += AllocationSiteInfo::kSize;
-  }
-  size += elements_size;
-
-  // Allocate both the JS array and the elements array in one big
-  // allocation. This avoids multiple limit checks.
-  AllocationFlags flags = TAG_OBJECT;
-  if (mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS) {
-    flags = static_cast<AllocationFlags>(DOUBLE_ALIGNMENT | flags);
-  }
-  __ Allocate(size, eax, ebx, edx, fail, flags);
-
-  if (allocation_site_mode == TRACK_ALLOCATION_SITE) {
-    __ mov(FieldOperand(eax, allocation_info_start),
-           Immediate(Handle<Map>(masm->isolate()->heap()->
-                                 allocation_site_info_map())));
-    __ mov(FieldOperand(eax, allocation_info_start + kPointerSize), ecx);
-  }
-
-  // Copy the JS array part.
-  for (int i = 0; i < JSArray::kSize; i += kPointerSize) {
-    if ((i != JSArray::kElementsOffset) || (length == 0)) {
-      __ mov(ebx, FieldOperand(ecx, i));
-      __ mov(FieldOperand(eax, i), ebx);
-    }
-  }
-
-  if (length > 0) {
-    // Get hold of the elements array of the boilerplate and setup the
-    // elements pointer in the resulting object.
-    __ mov(ecx, FieldOperand(ecx, JSArray::kElementsOffset));
-    if (allocation_site_mode == TRACK_ALLOCATION_SITE) {
-      __ lea(edx, Operand(eax, JSArray::kSize + AllocationSiteInfo::kSize));
-    } else {
-      __ lea(edx, Operand(eax, JSArray::kSize));
-    }
-    __ mov(FieldOperand(eax, JSArray::kElementsOffset), edx);
-
-    // Copy the elements array.
-    if (mode == FastCloneShallowArrayStub::CLONE_ELEMENTS) {
-      for (int i = 0; i < elements_size; i += kPointerSize) {
-        __ mov(ebx, FieldOperand(ecx, i));
-        __ mov(FieldOperand(edx, i), ebx);
-      }
-    } else {
-      ASSERT(mode == FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS);
-      int i;
-      for (i = 0; i < FixedDoubleArray::kHeaderSize; i += kPointerSize) {
-        __ mov(ebx, FieldOperand(ecx, i));
-        __ mov(FieldOperand(edx, i), ebx);
-      }
-      while (i < elements_size) {
-        __ fld_d(FieldOperand(ecx, i));
-        __ fstp_d(FieldOperand(edx, i));
-        i += kDoubleSize;
-      }
-      ASSERT(i == elements_size);
-    }
-  }
-}
-
-
-void FastCloneShallowArrayStub::Generate(MacroAssembler* masm) {
-  // Stack layout on entry:
-  //
-  // [esp + kPointerSize]: constant elements.
-  // [esp + (2 * kPointerSize)]: literal index.
-  // [esp + (3 * kPointerSize)]: literals array.
-
-  // Load boilerplate object into ecx and check if we need to create a
-  // boilerplate.
-  __ mov(ecx, Operand(esp, 3 * kPointerSize));
-  __ mov(eax, Operand(esp, 2 * kPointerSize));
-  STATIC_ASSERT(kPointerSize == 4);
-  STATIC_ASSERT(kSmiTagSize == 1);
-  STATIC_ASSERT(kSmiTag == 0);
-  __ mov(ecx, FieldOperand(ecx, eax, times_half_pointer_size,
-                           FixedArray::kHeaderSize));
-  Factory* factory = masm->isolate()->factory();
-  __ cmp(ecx, factory->undefined_value());
-  Label slow_case;
-  __ j(equal, &slow_case);
-
-  FastCloneShallowArrayStub::Mode mode = mode_;
-  // ecx is boilerplate object.
-  if (mode == CLONE_ANY_ELEMENTS) {
-    Label double_elements, check_fast_elements;
-    __ mov(ebx, FieldOperand(ecx, JSArray::kElementsOffset));
-    __ CheckMap(ebx, factory->fixed_cow_array_map(),
-                &check_fast_elements, DONT_DO_SMI_CHECK);
-    GenerateFastCloneShallowArrayCommon(masm, 0, COPY_ON_WRITE_ELEMENTS,
-                                        allocation_site_mode_,
-                                        &slow_case);
-    __ ret(3 * kPointerSize);
-
-    __ bind(&check_fast_elements);
-    __ CheckMap(ebx, factory->fixed_array_map(),
-                &double_elements, DONT_DO_SMI_CHECK);
-    GenerateFastCloneShallowArrayCommon(masm, length_, CLONE_ELEMENTS,
-                                        allocation_site_mode_,
-                                        &slow_case);
-    __ ret(3 * kPointerSize);
-
-    __ bind(&double_elements);
-    mode = CLONE_DOUBLE_ELEMENTS;
-    // Fall through to generate the code to handle double elements.
-  }
-
-  if (FLAG_debug_code) {
-    const char* message;
-    Handle<Map> expected_map;
-    if (mode == CLONE_ELEMENTS) {
-      message = "Expected (writable) fixed array";
-      expected_map = factory->fixed_array_map();
-    } else if (mode == CLONE_DOUBLE_ELEMENTS) {
-      message = "Expected (writable) fixed double array";
-      expected_map = factory->fixed_double_array_map();
-    } else {
-      ASSERT(mode == COPY_ON_WRITE_ELEMENTS);
-      message = "Expected copy-on-write fixed array";
-      expected_map = factory->fixed_cow_array_map();
-    }
-    __ push(ecx);
-    __ mov(ecx, FieldOperand(ecx, JSArray::kElementsOffset));
-    __ cmp(FieldOperand(ecx, HeapObject::kMapOffset), expected_map);
-    __ Assert(equal, message);
-    __ pop(ecx);
-  }
-
-  GenerateFastCloneShallowArrayCommon(masm, length_, mode,
-                                      allocation_site_mode_,
-                                      &slow_case);
-
-  // Return and remove the on-stack parameters.
-  __ ret(3 * kPointerSize);
-
-  __ bind(&slow_case);
-  __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 3, 1);
-}
-
-
 // The stub expects its argument on the stack and returns its result in tos_:
 // zero for false, and a non-zero value for true.
 void ToBooleanStub::Generate(MacroAssembler* masm) {
   // This stub overrides SometimesSetsUpAFrame() to return false.  That means
   // we cannot call anything that could cause a GC from this stub.
   Label patch;
   Factory* factory = masm->isolate()->factory();
   const Register argument = eax;
   const Register map = edx;
 
@@ skipping 4501 matching lines @@
 
 bool CEntryStub::IsPregenerated() {
   return (!save_doubles_ || ISOLATE->fp_stubs_generated()) &&
           result_size_ == 1;
 }
 
 
 void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
   CEntryStub::GenerateAheadOfTime(isolate);
   StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate);
+  StubFailureTrampolineStub::GenerateAheadOfTime(isolate);
   // It is important that the store buffer overflow stubs are generated first.
   RecordWriteStub::GenerateFixedRegStubsAheadOfTime(isolate);
 }
 
 
 void CodeStub::GenerateFPStubs(Isolate* isolate) {
   if (CpuFeatures::IsSupported(SSE2)) {
     CEntryStub save_doubles(1, kSaveFPRegs);
     // Stubs might already be in the snapshot, detect that and don't regenerate,
     // which would lead to code stub initialization state being messed up.
@@ skipping 2690 matching lines @@
                                  edi,
                                  xmm0,
                                  &slow_elements_from_double,
                                  false);
   __ pop(edx);
   __ ret(0);
 }
 
 
 void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
-  ASSERT(!Serializer::enabled());
-  bool save_fp_regs = CpuFeatures::IsSupported(SSE2);
-  CEntryStub ces(1, save_fp_regs ? kSaveFPRegs : kDontSaveFPRegs);
+  CEntryStub ces(1, fp_registers_ ? kSaveFPRegs : kDontSaveFPRegs);
   __ call(ces.GetCode(masm->isolate()), RelocInfo::CODE_TARGET);
   int parameter_count_offset =
       StubFailureTrampolineFrame::kCallerStackParameterCountFrameOffset;
   __ mov(ebx, MemOperand(ebp, parameter_count_offset));
   masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
   __ pop(ecx);
   int additional_offset = function_mode_ == JS_FUNCTION_STUB_MODE
       ? kPointerSize
       : 0;
   __ lea(esp, MemOperand(esp, ebx, times_pointer_size, additional_offset));
@@ skipping 30 matching lines @@
   // Restore ecx.
   __ pop(ecx);
   __ ret(0);
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32