Revert "Fix phis for non-sse2 double values"

src/ia32/lithium-codegen-ia32.h

 // 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 453 matching lines @@
         if (!stack_[i].is(other.stack_[i])) return false;
       }
       return true;
     }
     bool Contains(X87Register reg);
     void Fxch(X87Register reg, int other_slot = 0);
     void Free(X87Register reg);
     void PrepareToWrite(X87Register reg);
     void CommitWrite(X87Register reg);
     void FlushIfNecessary(LInstruction* instr, LCodeGen* cgen);
-    void LeavingBlock(int current_block_id, LGoto* goto_instr);
     int depth() const { return stack_depth_; }
     void pop() {
       ASSERT(is_mutable_);
       stack_depth_--;
     }
     void push(X87Register reg) {
       ASSERT(is_mutable_);
       ASSERT(stack_depth_ < X87Register::kNumAllocatableRegisters);
       stack_[stack_depth_] = reg;
       stack_depth_++;
@@ skipping 81 matching lines @@
   Label exit_;
   Label* external_exit_;
   Label done_;
   int instruction_index_;
   LCodeGen::X87Stack x87_stack_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_LITHIUM_CODEGEN_IA32_H_