Added infrastructure for optimizing new CanvasArray types in WebGL...

src/ia32/codegen-ia32.cc

 // Copyright 2006-2009 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 755 matching lines @@
   // operand_1 in eax, operand_2 in edx; falls through on float
   // operands, jumps to the non_float label otherwise.
   static void CheckFloatOperands(MacroAssembler* masm,
                                  Label* non_float,
                                  Register scratch);
   // Test if operands are numbers (smi or HeapNumber objects), and load
   // them into xmm0 and xmm1 if they are.  Jump to label not_numbers if
   // either operand is not a number.  Operands are in edx and eax.
   // Leaves operands unchanged.
   static void LoadSse2Operands(MacroAssembler* masm, Label* not_numbers);
-  // Allocate a heap number in new space with undefined value.
-  // Returns tagged pointer in eax, or jumps to need_gc if new space is full.
-  static void AllocateHeapNumber(MacroAssembler* masm,
-                                 Label* need_gc,
-                                 Register scratch1,
-                                 Register scratch2,
-                                 Register result);
 };
 
 
 const char* GenericBinaryOpStub::GetName() {
   switch (op_) {
     case Token::ADD: return "GenericBinaryOpStub_ADD";
     case Token::SUB: return "GenericBinaryOpStub_SUB";
     case Token::MUL: return "GenericBinaryOpStub_MUL";
     case Token::DIV: return "GenericBinaryOpStub_DIV";
     case Token::BIT_OR: return "GenericBinaryOpStub_BIT_OR";
@@ skipping 4375 matching lines @@
   ASSERT(eax_reg.is_valid());
   __ fnstsw_ax();
   __ sahf();
   eax_reg.Unuse();
   call_runtime.Branch(parity_even, not_taken);
 
   // Allocate heap number for result if possible.
   Result scratch1 = allocator()->Allocate();
   Result scratch2 = allocator()->Allocate();
   Result heap_number = allocator()->Allocate();
-  FloatingPointHelper::AllocateHeapNumber(masm_,
-                                          call_runtime.entry_label(),
-                                          scratch1.reg(),
-                                          scratch2.reg(),
-                                          heap_number.reg());
+  __ AllocateHeapNumber(heap_number.reg(),
+                        scratch1.reg(),
+                        scratch2.reg(),
+                        call_runtime.entry_label());
   scratch1.Unuse();
   scratch2.Unuse();
 
   // Store the result in the allocated heap number.
   __ fstp_d(FieldOperand(heap_number.reg(), HeapNumber::kValueOffset));
   // Replace the extra copy of the argument with the result.
   frame_->SetElementAt(0, &heap_number);
   done.Jump();
 
   call_runtime.Bind();
@@ skipping 1636 matching lines @@
             // Fall through!
           case OVERWRITE_RIGHT:
             // If the argument in eax is already an object, we skip the
             // allocation of a heap number.
             __ test(eax, Immediate(kSmiTagMask));
             __ j(not_zero, &skip_allocation, not_taken);
             // Fall through!
           case NO_OVERWRITE: {
             // Allocate a heap number for the result. Keep eax and edx intact
             // for the possible runtime call.
-            FloatingPointHelper::AllocateHeapNumber(masm,
-                                                    &call_runtime,
-                                                    ecx,
-                                                    no_reg,
-                                                    ebx);
+            __ AllocateHeapNumber(ebx, ecx, no_reg, &call_runtime);
             // Now eax can be overwritten losing one of the arguments as we are
             // now done and will not need it any more.
             __ mov(eax, ebx);
             __ bind(&skip_allocation);
             break;
           }
           default: UNREACHABLE();
         }
         __ movdbl(FieldOperand(eax, HeapNumber::kValueOffset), xmm0);
         GenerateReturn(masm);
       } else {  // SSE2 not available, use FPU.
         FloatingPointHelper::CheckFloatOperands(masm, &call_runtime, ebx);
         // Allocate a heap number, if needed.
         Label skip_allocation;
         switch (mode_) {
           case OVERWRITE_LEFT:
             __ mov(eax, Operand(edx));
             // Fall through!
           case OVERWRITE_RIGHT:
             // If the argument in eax is already an object, we skip the
             // allocation of a heap number.
             __ test(eax, Immediate(kSmiTagMask));
             __ j(not_zero, &skip_allocation, not_taken);
             // Fall through!
           case NO_OVERWRITE:
             // Allocate a heap number for the result. Keep eax and edx intact
             // for the possible runtime call.
-            FloatingPointHelper::AllocateHeapNumber(masm,
-                                                    &call_runtime,
-                                                    ecx,
-                                                    no_reg,
-                                                    ebx);
+            __ AllocateHeapNumber(ebx, ecx, no_reg, &call_runtime);
             // Now eax can be overwritten losing one of the arguments as we are
             // now done and will not need it any more.
             __ mov(eax, ebx);
             __ bind(&skip_allocation);
             break;
           default: UNREACHABLE();
         }
         FloatingPointHelper::LoadFloatOperands(masm, ecx);
 
         switch (op_) {
@@ skipping 89 matching lines @@
           case OVERWRITE_LEFT:
           case OVERWRITE_RIGHT:
             // If the operand was an object, we skip the
             // allocation of a heap number.
             __ mov(eax, Operand(esp, mode_ == OVERWRITE_RIGHT ?
                                 1 * kPointerSize : 2 * kPointerSize));
             __ test(eax, Immediate(kSmiTagMask));
             __ j(not_zero, &skip_allocation, not_taken);
             // Fall through!
           case NO_OVERWRITE:
-            FloatingPointHelper::AllocateHeapNumber(masm, &call_runtime,
-                                                    ecx, edx, eax);
+            __ AllocateHeapNumber(eax, ecx, edx, &call_runtime);
             __ bind(&skip_allocation);
             break;
           default: UNREACHABLE();
         }
         // Store the result in the HeapNumber and return.
         __ mov(Operand(esp, 1 * kPointerSize), ebx);
         __ fild_s(Operand(esp, 1 * kPointerSize));
         __ fstp_d(FieldOperand(eax, HeapNumber::kValueOffset));
         __ ret(2 * kPointerSize);
       }
@@ skipping 129 matching lines @@
   // If arguments are not passed in registers remove them from the stack before
   // returning.
   if (!HasArgumentsInRegisters()) {
     __ ret(2 * kPointerSize);  // Remove both operands
   } else {
     __ ret(0);
   }
 }
 
 
-void FloatingPointHelper::AllocateHeapNumber(MacroAssembler* masm,
-                                             Label* need_gc,
-                                             Register scratch1,
-                                             Register scratch2,
-                                             Register result) {
-  // Allocate heap number in new space.
-  __ AllocateInNewSpace(HeapNumber::kSize,
-                        result,
-                        scratch1,
-                        scratch2,
-                        need_gc,
-                        TAG_OBJECT);
-
-  // Set the map.
-  __ mov(FieldOperand(result, HeapObject::kMapOffset),
-         Immediate(Factory::heap_number_map()));
-}
-
-
 void FloatingPointHelper::LoadFloatOperand(MacroAssembler* masm,
                                            Register number) {
   Label load_smi, done;
 
   __ test(number, Immediate(kSmiTagMask));
   __ j(zero, &load_smi, not_taken);
   __ fld_d(FieldOperand(number, HeapNumber::kValueOffset));
   __ jmp(&done);
 
   __ bind(&load_smi);
@@ skipping 136 matching lines @@
   __ mov(edx, FieldOperand(eax, HeapObject::kMapOffset));
   __ cmp(edx, Factory::heap_number_map());
   __ j(not_equal, &slow);
   if (overwrite_) {
     __ mov(edx, FieldOperand(eax, HeapNumber::kExponentOffset));
     __ xor_(edx, HeapNumber::kSignMask);  // Flip sign.
     __ mov(FieldOperand(eax, HeapNumber::kExponentOffset), edx);
   } else {
     __ mov(edx, Operand(eax));
     // edx: operand
-    FloatingPointHelper::AllocateHeapNumber(masm, &undo, ebx, ecx, eax);
+    __ AllocateHeapNumber(eax, ebx, ecx, &undo);
     // eax: allocated 'empty' number
     __ mov(ecx, FieldOperand(edx, HeapNumber::kExponentOffset));
     __ xor_(ecx, HeapNumber::kSignMask);  // Flip sign.
     __ mov(FieldOperand(eax, HeapNumber::kExponentOffset), ecx);
     __ mov(ecx, FieldOperand(edx, HeapNumber::kMantissaOffset));
     __ mov(FieldOperand(eax, HeapNumber::kMantissaOffset), ecx);
   }
 
   __ bind(&done);
 
@@ skipping 804 matching lines @@
 
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) < (1 << 15));
   return (static_cast<unsigned>(cc_) << 1) | (strict_ ? 1 : 0);
 }
 
 #undef __
 
 } }  // namespace v8::internal