Reduce space filter threshold to 128.

In order to get closer to our code increase limit.

Bug:21868508

(cherry picked from commit 432bf3d525dd0736c91238d69e29b4db6a2f7b80)

Change-Id: Iab19fe99a8a869b0fb841bac317016e4a3dc00e2
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index f1293b7..69c26f0 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -514,8 +514,8 @@
   }
 
   // Implementation of the space filter: do not compile a code item whose size in
-  // code units is bigger than 256.
-  static constexpr size_t kSpaceFilterOptimizingThreshold = 256;
+  // code units is bigger than 128.
+  static constexpr size_t kSpaceFilterOptimizingThreshold = 128;
   const CompilerOptions& compiler_options = compiler_driver->GetCompilerOptions();
   if ((compiler_options.GetCompilerFilter() == CompilerOptions::kSpace)
       && (code_item->insns_size_in_code_units_ > kSpaceFilterOptimizingThreshold)) {