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, 17 insertions, 8 deletions

diff --git a/compiler/optimizing/code_generator_x86.cc b/compiler/optimizing/code_generator_x86.cc
index 04999bedb0..a037040ae4 100644
--- a/compiler/optimizing/code_generator_x86.cc
+++ b/compiler/optimizing/code_generator_x86.cc
@@ -3114,18 +3114,27 @@ void CodeGeneratorX86::GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke,
   // 3) app -> app
   //
   // Currently we implement the app -> app logic, which looks up in the resolve cache.
-  // temp = method;
-  LoadCurrentMethod(temp);
-  if (!invoke->IsRecursive()) {
-    // temp = temp->dex_cache_resolved_methods_;
-    __ movl(temp, Address(temp, mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value()));
-    // temp = temp[index_in_cache]
-    __ movl(temp, Address(temp, CodeGenerator::GetCacheOffset(invoke->GetDexMethodIndex())));
+
+  if (invoke->IsStringInit()) {
+    // temp = thread->string_init_entrypoint
+    __ fs()->movl(temp, Address::Absolute(invoke->GetStringInitOffset()));
     // (temp + offset_of_quick_compiled_code)()
     __ call(Address(
         temp, mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset(kX86WordSize).Int32Value()));
   } else {
-    __ call(GetFrameEntryLabel());
+    // temp = method;
+    LoadCurrentMethod(temp);
+    if (!invoke->IsRecursive()) {
+      // temp = temp->dex_cache_resolved_methods_;
+      __ movl(temp, Address(temp, mirror::ArtMethod::DexCacheResolvedMethodsOffset().Int32Value()));
+      // temp = temp[index_in_cache]
+      __ movl(temp, Address(temp, CodeGenerator::GetCacheOffset(invoke->GetDexMethodIndex())));
+      // (temp + offset_of_quick_compiled_code)()
+      __ call(Address(temp,
+          mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset(kX86WordSize).Int32Value()));
+    } else {
+      __ call(GetFrameEntryLabel());
+    }
   }
 
   DCHECK(!IsLeafMethod());