Replace String CharArray with internal uint16_t array.

Summary of high level changes:
  - Adds compiler inliner support to identify string init methods
  - Adds compiler support (quick & optimizing) with new invoke code path
    that calls method off the thread pointer
  - Adds thread entrypoints for all string init methods
  - Adds map to verifier to log when receiver of string init has been
    copied to other registers. used by compiler and interpreter

Change-Id: I797b992a8feb566f9ad73060011ab6f51eb7ce01

1 files changed, 131 insertions, 0 deletions

diff --git a/runtime/well_known_classes.cc b/runtime/well_known_classes.cc
index a2d0427..2843806 100644
--- a/runtime/well_known_classes.cc
+++ b/runtime/well_known_classes.cc
@@ -49,6 +49,7 @@ jclass WellKnownClasses::java_lang_reflect_Proxy;
 jclass WellKnownClasses::java_lang_RuntimeException;
 jclass WellKnownClasses::java_lang_StackOverflowError;
 jclass WellKnownClasses::java_lang_String;
+jclass WellKnownClasses::java_lang_StringFactory;
 jclass WellKnownClasses::java_lang_System;
 jclass WellKnownClasses::java_lang_Thread;
 jclass WellKnownClasses::java_lang_Thread__UncaughtExceptionHandler;
@@ -79,6 +80,38 @@ jmethodID WellKnownClasses::java_lang_ref_ReferenceQueue_add;
 jmethodID WellKnownClasses::java_lang_reflect_Proxy_invoke;
 jmethodID WellKnownClasses::java_lang_Runtime_nativeLoad;
 jmethodID WellKnownClasses::java_lang_Short_valueOf;
+jmethodID WellKnownClasses::java_lang_String_init;
+jmethodID WellKnownClasses::java_lang_String_init_B;
+jmethodID WellKnownClasses::java_lang_String_init_BI;
+jmethodID WellKnownClasses::java_lang_String_init_BII;
+jmethodID WellKnownClasses::java_lang_String_init_BIII;
+jmethodID WellKnownClasses::java_lang_String_init_BIIString;
+jmethodID WellKnownClasses::java_lang_String_init_BString;
+jmethodID WellKnownClasses::java_lang_String_init_BIICharset;
+jmethodID WellKnownClasses::java_lang_String_init_BCharset;
+jmethodID WellKnownClasses::java_lang_String_init_C;
+jmethodID WellKnownClasses::java_lang_String_init_CII;
+jmethodID WellKnownClasses::java_lang_String_init_IIC;
+jmethodID WellKnownClasses::java_lang_String_init_String;
+jmethodID WellKnownClasses::java_lang_String_init_StringBuffer;
+jmethodID WellKnownClasses::java_lang_String_init_III;
+jmethodID WellKnownClasses::java_lang_String_init_StringBuilder;
+jmethodID WellKnownClasses::java_lang_StringFactory_newEmptyString;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_B;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BI;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BII;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BIII;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BIIString;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BString;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BIICharset;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromBytes_BCharset;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromChars_C;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromChars_CII;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromChars_IIC;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromString;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromStringBuffer;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromCodePoints;
+jmethodID WellKnownClasses::java_lang_StringFactory_newStringFromStringBuilder;
 jmethodID WellKnownClasses::java_lang_System_runFinalization = nullptr;
 jmethodID WellKnownClasses::java_lang_Thread_init;
 jmethodID WellKnownClasses::java_lang_Thread_run;
@@ -188,6 +221,7 @@ void WellKnownClasses::Init(JNIEnv* env) {
   java_lang_RuntimeException = CacheClass(env, "java/lang/RuntimeException");
   java_lang_StackOverflowError = CacheClass(env, "java/lang/StackOverflowError");
   java_lang_String = CacheClass(env, "java/lang/String");
+  java_lang_StringFactory = CacheClass(env, "java/lang/StringFactory");
   java_lang_System = CacheClass(env, "java/lang/System");
   java_lang_Thread = CacheClass(env, "java/lang/Thread");
   java_lang_Thread__UncaughtExceptionHandler = CacheClass(env,
@@ -223,6 +257,62 @@ void WellKnownClasses::Init(JNIEnv* env) {
   org_apache_harmony_dalvik_ddmc_DdmServer_broadcast = CacheMethod(env, org_apache_harmony_dalvik_ddmc_DdmServer, true, "broadcast", "(I)V");
   org_apache_harmony_dalvik_ddmc_DdmServer_dispatch = CacheMethod(env, org_apache_harmony_dalvik_ddmc_DdmServer, true, "dispatch", "(I[BII)Lorg/apache/harmony/dalvik/ddmc/Chunk;");
 
+  java_lang_String_init = CacheMethod(env, java_lang_String, false, "<init>", "()V");
+  java_lang_String_init_B = CacheMethod(env, java_lang_String, false, "<init>", "([B)V");
+  java_lang_String_init_BI = CacheMethod(env, java_lang_String, false, "<init>", "([BI)V");
+  java_lang_String_init_BII = CacheMethod(env, java_lang_String, false, "<init>", "([BII)V");
+  java_lang_String_init_BIII = CacheMethod(env, java_lang_String, false, "<init>", "([BIII)V");
+  java_lang_String_init_BIIString = CacheMethod(env, java_lang_String, false, "<init>",
+      "([BIILjava/lang/String;)V");
+  java_lang_String_init_BString = CacheMethod(env, java_lang_String, false, "<init>",
+      "([BLjava/lang/String;)V");
+  java_lang_String_init_BIICharset = CacheMethod(env, java_lang_String, false, "<init>",
+      "([BIILjava/nio/charset/Charset;)V");
+  java_lang_String_init_BCharset = CacheMethod(env, java_lang_String, false, "<init>",
+      "([BLjava/nio/charset/Charset;)V");
+  java_lang_String_init_C = CacheMethod(env, java_lang_String, false, "<init>", "([C)V");
+  java_lang_String_init_CII = CacheMethod(env, java_lang_String, false, "<init>", "([CII)V");
+  java_lang_String_init_IIC = CacheMethod(env, java_lang_String, false, "<init>", "(II[C)V");
+  java_lang_String_init_String = CacheMethod(env, java_lang_String, false, "<init>",
+      "(Ljava/lang/String;)V");
+  java_lang_String_init_StringBuffer = CacheMethod(env, java_lang_String, false, "<init>",
+      "(Ljava/lang/StringBuffer;)V");
+  java_lang_String_init_III = CacheMethod(env, java_lang_String, false, "<init>", "([III)V");
+  java_lang_String_init_StringBuilder = CacheMethod(env, java_lang_String, false, "<init>",
+       "(Ljava/lang/StringBuilder;)V");
+  java_lang_StringFactory_newEmptyString = CacheMethod(env, java_lang_StringFactory, true,
+       "newEmptyString", "()Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_B = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromBytes", "([B)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BI = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromBytes", "([BI)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BII = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromBytes", "([BII)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BIII = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromBytes", "([BIII)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BIIString = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromBytes", "([BIILjava/lang/String;)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BString = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromBytes", "([BLjava/lang/String;)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BIICharset = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromBytes", "([BIILjava/nio/charset/Charset;)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromBytes_BCharset = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromBytes", "([BLjava/nio/charset/Charset;)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromChars_C = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromChars", "([C)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromChars_CII = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromChars", "([CII)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromChars_IIC = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromChars", "(II[C)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromString = CacheMethod(env, java_lang_StringFactory, true,
+       "newStringFromString", "(Ljava/lang/String;)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromStringBuffer = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromStringBuffer", "(Ljava/lang/StringBuffer;)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromCodePoints = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromCodePoints", "([III)Ljava/lang/String;");
+  java_lang_StringFactory_newStringFromStringBuilder = CacheMethod(env, java_lang_StringFactory,
+       true, "newStringFromStringBuilder", "(Ljava/lang/StringBuilder;)Ljava/lang/String;");
+
   dalvik_system_DexFile_cookie = CacheField(env, dalvik_system_DexFile, false, "mCookie", "Ljava/lang/Object;");
   dalvik_system_PathClassLoader_pathList = CacheField(env, dalvik_system_PathClassLoader, false, "pathList", "Ldalvik/system/DexPathList;");
   dalvik_system_DexPathList_dexElements = CacheField(env, dalvik_system_DexPathList, false, "dexElements", "[Ldalvik/system/DexPathList$Element;");
@@ -265,6 +355,8 @@ void WellKnownClasses::Init(JNIEnv* env) {
   java_lang_Integer_valueOf = CachePrimitiveBoxingMethod(env, 'I', "java/lang/Integer");
   java_lang_Long_valueOf = CachePrimitiveBoxingMethod(env, 'J', "java/lang/Long");
   java_lang_Short_valueOf = CachePrimitiveBoxingMethod(env, 'S', "java/lang/Short");
+
+  Thread::Current()->InitStringEntryPoints();
 }
 
 void WellKnownClasses::LateInit(JNIEnv* env) {
@@ -276,4 +368,43 @@ mirror::Class* WellKnownClasses::ToClass(jclass global_jclass) {
   return reinterpret_cast<mirror::Class*>(Thread::Current()->DecodeJObject(global_jclass));
 }
 
+jmethodID WellKnownClasses::StringInitToStringFactoryMethodID(jmethodID string_init) {
+  // TODO: Prioritize ordering.
+  if (string_init == java_lang_String_init) {
+    return java_lang_StringFactory_newEmptyString;
+  } else if (string_init == java_lang_String_init_B) {
+    return java_lang_StringFactory_newStringFromBytes_B;
+  } else if (string_init == java_lang_String_init_BI) {
+    return java_lang_StringFactory_newStringFromBytes_BI;
+  } else if (string_init == java_lang_String_init_BII) {
+    return java_lang_StringFactory_newStringFromBytes_BII;
+  } else if (string_init == java_lang_String_init_BIII) {
+    return java_lang_StringFactory_newStringFromBytes_BIII;
+  } else if (string_init == java_lang_String_init_BIIString) {
+    return java_lang_StringFactory_newStringFromBytes_BIIString;
+  } else if (string_init == java_lang_String_init_BString) {
+    return java_lang_StringFactory_newStringFromBytes_BString;
+  } else if (string_init == java_lang_String_init_BIICharset) {
+    return java_lang_StringFactory_newStringFromBytes_BIICharset;
+  } else if (string_init == java_lang_String_init_BCharset) {
+    return java_lang_StringFactory_newStringFromBytes_BCharset;
+  } else if (string_init == java_lang_String_init_C) {
+    return java_lang_StringFactory_newStringFromChars_C;
+  } else if (string_init == java_lang_String_init_CII) {
+    return java_lang_StringFactory_newStringFromChars_CII;
+  } else if (string_init == java_lang_String_init_IIC) {
+    return java_lang_StringFactory_newStringFromChars_IIC;
+  } else if (string_init == java_lang_String_init_String) {
+    return java_lang_StringFactory_newStringFromString;
+  } else if (string_init == java_lang_String_init_StringBuffer) {
+    return java_lang_StringFactory_newStringFromStringBuffer;
+  } else if (string_init == java_lang_String_init_III) {
+    return java_lang_StringFactory_newStringFromCodePoints;
+  } else if (string_init == java_lang_String_init_StringBuilder) {
+    return java_lang_StringFactory_newStringFromStringBuilder;
+  }
+  LOG(FATAL) << "Could not find StringFactory method for String.<init>";
+  return nullptr;
+}
+
 }  // namespace art