X87: [compiler] Mark shared functions for optimization.

  port 4a31323e (r40506)

  original commit message:
  The current method of marking functions for optimization, which replaces
  the JSFunction's code object with one that triggers optimization, would
  never allow unnamed functions to be optimized. This is an issue for a
  style of programming which heavily relies on passing around closures.

  This patch sets a bit on the SharedFunctionInfo when a JSFunction is
  marked. When another JSFunction referring to the same SharedFunctionInfo
  is lazily compiled, it immediately triggers a non-concurrent optimize.

BUG=

Review-Url: https://codereview.chromium.org/2439393002
Cr-Commit-Position: refs/heads/master@{#40520}

src/builtins/x87/builtins-x87.cc

@@ -1163,7 +1163,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ pop(argument_count);
   __ mov(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   // Is the shared function marked for optimization?
-  __ testb(
+  __ test_b(
       FieldOperand(entry,
                    SharedFunctionInfo::kWasMarkedForOptimizationByteOffset),
       Immediate(