Remove dead CompilationInfo::DisableOptimization predicate.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/585443002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24030 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler.cc

@@ -259,18 +259,6 @@ Code::Flags CompilationInfo::flags() const {
 }
 
 
-// Disable optimization for the rest of the compilation pipeline.
-void CompilationInfo::DisableOptimization() {
-  bool is_optimizable_closure =
-    FLAG_optimize_closures &&
-    closure_.is_null() &&
-    !scope_->HasTrivialOuterContext() &&
-    !scope_->outer_scope_calls_sloppy_eval() &&
-    !scope_->inside_with();
-  SetMode(is_optimizable_closure ? BASE : NONOPT);
-}
-
-
 // Primitive functions are unlikely to be picked up by the stack-walking
 // profiler, so they trigger their own optimization when they're called
 // for the SharedFunctionInfo::kCallsUntilPrimitiveOptimization-th time.

src/compiler.h

@@ -279,7 +279,6 @@ class CompilationInfo {
     unoptimized_code_ = unoptimized;
     optimization_id_ = isolate()->NextOptimizationId();
   }
-  void DisableOptimization();
 
   // Deoptimization support.
   bool HasDeoptimizationSupport() const {

src/flag-definitions.h

@@ -291,7 +291,6 @@ DEFINE_BOOL(trace_dead_code_elimination, false, "trace dead code elimination")
 DEFINE_BOOL(unreachable_code_elimination, true, "eliminate unreachable code")
 DEFINE_BOOL(trace_osr, false, "trace on-stack replacement")
 DEFINE_INT(stress_runs, 0, "number of stress runs")
-DEFINE_BOOL(optimize_closures, true, "optimize closures")
 DEFINE_BOOL(lookup_sample_by_shared, true,
             "when picking a function to optimize, watch for shared function "
             "info, not JSFunction itself")