Allow bailing out of the register allocator when running out of virtual registers.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
===================================================================
--- src/ia32/lithium-ia32.cc	(revision 10595)
+++ src/ia32/lithium-ia32.cc	(working copy)
@@ -670,7 +670,7 @@
     HInstruction* instr = HInstruction::cast(value);
     VisitInstruction(instr);
   }
-  allocator_->RecordUse(value, operand);
+  operand->set_virtual_register(value->id());
   return operand;
 }
 
@@ -678,7 +678,7 @@
 template<int I, int T>
 LInstruction* LChunkBuilder::Define(LTemplateInstruction<1, I, T>* instr,
                                     LUnallocated* result) {
-  allocator_->RecordDefinition(current_instruction_, result);
+  result->set_virtual_register(current_instruction_->id());
   instr->set_result(result);
   return instr;
 }
@@ -796,21 +796,22 @@
 LUnallocated* LChunkBuilder::TempRegister() {
   LUnallocated* operand =
       new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER);
-  allocator_->RecordTemporary(operand);
+  operand->set_virtual_register(allocator_->GetVirtualRegister());
+  if (!allocator_->AllocationOk()) Abort("Not enough virtual registers (temps).");
   return operand;
 }
 
 
 LOperand* LChunkBuilder::FixedTemp(Register reg) {
   LUnallocated* operand = ToUnallocated(reg);
-  allocator_->RecordTemporary(operand);
+  ASSERT(operand->HasFixedPolicy());
   return operand;
 }
 
 
 LOperand* LChunkBuilder::FixedTemp(XMMRegister reg) {
   LUnallocated* operand = ToUnallocated(reg);
-  allocator_->RecordTemporary(operand);
+  ASSERT(operand->HasFixedPolicy());
   return operand;
 }