Remove DI stat tracking from redex PrintKotlinStats

Summary:
Remove the di_generated_class stat tracking from PrintKotlinStats across
all redex variants (redex, redex-frozen, redex-stable, redex-staging).
This stat tracked classes extending the DI base module class, but DI
modules no longer use base class inheritance - they use InjectorModule
annotations instead. The stat hasn't been used for years.

Reviewed By: wsanville

Differential Revision: D96128032

fbshipit-source-id: f0341d04cebbdad4cf21425c060611982f85c92b

Author: Rick Ratmansky

opt/print-kotlin-stats/PrintKotlinStats.cpp

@@ -23,7 +23,6 @@ constexpr const char* RW_PROP_SIGNATURE =
     "Lkotlin/properties/ReadWriteProperty;";
 constexpr const char* KPROPERTY_ARRAY = "[Lkotlin/reflect/KProperty;";
 constexpr const char* KOTLIN_LAMBDA = "Lkotlin/jvm/internal/Lambda;";
-constexpr const char* DI_BASE = "Lcom/facebook/inject/AbstractLibraryModule;";
 constexpr const char* CONTINUATION_IMPL =
     "Lkotlin/coroutines/jvm/internal/ContinuationImpl;";
 // A lambda like { true } has 4 instructions.
@@ -119,7 +118,6 @@ void PrintKotlinStats::setup() {
       kotlin_nullcheck_wrapper::get_kotlin_null_assertions();
   m_kotlin_lambdas_base = DexType::get_type(KOTLIN_LAMBDA);
   m_kotlin_coroutin_continuation_base = DexType::get_type(CONTINUATION_IMPL);
-  m_di_base = DexType::get_type(DI_BASE);
   m_instance = DexString::make_string("INSTANCE");
 }
 
@@ -192,10 +190,6 @@ PrintKotlinStats::Stats PrintKotlinStats::handle_class(
     stats.kotlin_coroutine_continuation_base++;
   }
 
-  if (cls->get_super_class() == m_di_base) {
-    stats.di_generated_class++;
-  }
-
   for (auto* field : cls->get_sfields()) {
     if (field->get_name() == m_instance &&
         field->get_type() == cls->get_type()) {
@@ -366,7 +360,6 @@ void PrintKotlinStats::Stats::report(PassManager& mgr) const {
   mgr.incr_metric("kotlin_class", kotlin_class);
   mgr.incr_metric("Kotlin_anonymous_classes", kotlin_anonymous_class);
   mgr.incr_metric("kotlin_companion_class", kotlin_companion_class);
-  mgr.incr_metric("di_generated_class", di_generated_class);
   mgr.incr_metric("kotlin_default_arg_method", kotlin_default_arg_method);
   mgr.incr_metric("kotlin_homonym_default_arg_method",
                   kotlin_homonym_default_arg_method);
@@ -410,8 +403,6 @@ void PrintKotlinStats::Stats::report(PassManager& mgr) const {
         kotlin_anonymous_class);
   TRACE(KOTLIN_STATS, 1, "KOTLIN_STATS: kotlin_companion_class = %zu",
         kotlin_companion_class);
-  TRACE(KOTLIN_STATS, 1, "KOTLIN_STATS: di_generated_class = %zu",
-        di_generated_class);
   TRACE(KOTLIN_STATS, 1, "KOTLIN_STATS: kotlin_default_arg_method = %zu",
         kotlin_default_arg_method);
   TRACE(KOTLIN_STATS, 1,

opt/print-kotlin-stats/PrintKotlinStats.h

@@ -41,7 +41,6 @@ class PrintKotlinStats : public Pass {
     size_t kotlin_class{0};
     size_t kotlin_anonymous_class{0};
     size_t kotlin_companion_class{0};
-    size_t di_generated_class{0};
     size_t kotlin_default_arg_method{0};
     // Methods that end with $default but are not Kotlin default arg methods.
     size_t kotlin_homonym_default_arg_method{0};
@@ -78,7 +77,6 @@ class PrintKotlinStats : public Pass {
       kotlin_class += that.kotlin_class;
       kotlin_anonymous_class += that.kotlin_anonymous_class;
       kotlin_companion_class += that.kotlin_companion_class;
-      di_generated_class += that.di_generated_class;
       kotlin_default_arg_method += that.kotlin_default_arg_method;
       kotlin_homonym_default_arg_method +=
           that.kotlin_homonym_default_arg_method;
@@ -125,6 +123,5 @@ class PrintKotlinStats : public Pass {
   DexType* m_kotlin_lambdas_base = nullptr;
   DexType* m_kotlin_coroutin_continuation_base = nullptr;
   const DexString* m_instance = nullptr;
-  DexType* m_di_base = nullptr;
   Stats m_stats;
 };