X87: [interpreter] Change interpreter to use an BytecodeArray pointer and and offset.

port 597da503 (r29910).

original commit message:

    Changes the interpreter to use a BytecodeArray pointer and an offset to avoid
    having an inner pointer to a BytecodeArray object in registers during dispatch.

BUG=

Review URL: https://codereview.chromium.org/1267783002

Cr-Commit-Position: refs/heads/master@{#29942}

src/compiler/x87/linkage-x87.cc

@@ -17,7 +17,8 @@ struct X87LinkageHelperTraits {
   static Register ReturnValue2Reg() { return edx; }
   static Register JSCallFunctionReg() { return edi; }
   static Register ContextReg() { return esi; }
-  static Register InterpreterBytecodePointerReg() { return edi; }
+  static Register InterpreterBytecodeOffsetReg() { return ecx; }
+  static Register InterpreterBytecodeArrayReg() { return edi; }
   static Register InterpreterDispatchTableReg() { return ebx; }
   static Register RuntimeCallFunctionReg() { return ebx; }
   static Register RuntimeCallArgCountReg() { return eax; }