Revert experimental lambda feature.

This is a revert of the following changes :

30c475a2046951a81769c2db0b2dad66cd71e189.
lambda: Minor capture-variable/liberate-variable clean-up after post-merge reviews.

6918bf13eb855b3aa8ccdddda2d27ae8c60cec56.
lambda: Experimental support for capture-variable and liberate-variable

fc1ccd740b7c8e96dfac675cfc580122cd1b40a6.
lambda: Infrastructure to support capture/liberate-variable dex opcodes

e2facc5b18cd756a8b5500fb3d90da69c9ee0fb7.
runtime: Add lambda box/unbox object equality

2ee54e249ad21c74f29a161e248bebe7d22fddf1.
runtime: Partially implement box-lambda and unbox-lambda experimental opcodes

158f35c98e2ec0d40d2c032b8cdce5fb60944a7f.
interpreter: Add experimental lambda opcodes for invoke/create-lambda

a3bb72036f5454e410467f7151dc89f725ae1151.
Added format 25x to dexdump(2).

Plus surrounding cleanups.

Test: make test-art
Change-Id: Ic6f999ad17385ef933f763641049cf721510b202

1 files changed, 0 insertions, 210 deletions

diff --git a/runtime/lambda/closure_builder.cc b/runtime/lambda/closure_builder.cc
deleted file mode 100644
index 739e965238..0000000000
--- a/runtime/lambda/closure_builder.cc
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "lambda/closure_builder.h"
-
-#include "base/macros.h"
-#include "base/value_object.h"
-#include "lambda/art_lambda_method.h"
-#include "lambda/closure.h"
-#include "lambda/shorty_field_type.h"
-#include "runtime/mirror/object_reference.h"
-
-#include <stdint.h>
-#include <vector>
-
-namespace art {
-namespace lambda {
-
-/*
- * GC support TODOs:
- * (Although there's some code for storing objects, it is UNIMPLEMENTED(FATAL) because it is
- * incomplete).
- *
- * 1) GC needs to be able to traverse the Closure and visit any references.
- *    It might be possible to get away with global roots in the short term.
- *
- * 2) Add brooks read barrier support. We can store the black/gray/white bits
- *    in the lower 2 bits of the lambda art method pointer. Whenever a closure is copied
- *    [to the stack] we'd need to add a cold path to turn it black.
- *    (since there's only 3 colors, I can use the 4th value to indicate no-refs).
- *    e.g. 0x0 = gray, 0x1 = white, 0x2 = black, 0x3 = no-nested-references
- *    - Alternatively the GC can mark reference-less closures as always-black,
- *      although it would need extra work to check for references.
- */
-
-void ClosureBuilder::CaptureVariableObject(mirror::Object* object) {
-  auto compressed_reference = mirror::CompressedReference<mirror::Object>::FromMirrorPtr(object);
-  ShortyFieldTypeTraits::MaxType storage = 0;
-
-  static_assert(sizeof(storage) >= sizeof(compressed_reference),
-                "not enough room to store a compressed reference");
-  memcpy(&storage, &compressed_reference, sizeof(compressed_reference));
-
-  values_.push_back(storage);
-  size_ += kObjectReferenceSize;
-
-  static_assert(kObjectReferenceSize == sizeof(compressed_reference), "reference size mismatch");
-
-  // TODO: needs more work to support concurrent GC
-  if (kIsDebugBuild) {
-    if (kUseReadBarrier) {
-      UNIMPLEMENTED(FATAL) << "can't yet safely capture objects with read barrier";
-    }
-  }
-
-  shorty_types_ += ShortyFieldType::kObject;
-}
-
-void ClosureBuilder::CaptureVariableLambda(Closure* closure) {
-  DCHECK(closure != nullptr);  // null closures not allowed, target method must be null instead.
-  values_.push_back(reinterpret_cast<ShortyFieldTypeTraits::MaxType>(closure));
-
-  if (LIKELY(is_dynamic_size_ == false)) {
-    // Write in the extra bytes to store the dynamic size the first time.
-    is_dynamic_size_ = true;
-    size_ += sizeof(Closure::captured_[0].dynamic_.size_);
-  }
-
-  // A closure may be sized dynamically, so always query it for the true size.
-  size_ += closure->GetSize();
-
-  shorty_types_ += ShortyFieldType::kLambda;
-}
-
-size_t ClosureBuilder::GetSize() const {
-  return size_;
-}
-
-size_t ClosureBuilder::GetCaptureCount() const {
-  DCHECK_EQ(values_.size(), shorty_types_.size());
-  return values_.size();
-}
-
-const std::string& ClosureBuilder::GetCapturedVariableShortyTypes() const {
-  DCHECK_EQ(values_.size(), shorty_types_.size());
-  return shorty_types_;
-}
-
-Closure* ClosureBuilder::CreateInPlace(void* memory, ArtLambdaMethod* target_method) const {
-  DCHECK(memory != nullptr);
-  DCHECK(target_method != nullptr);
-  DCHECK_EQ(is_dynamic_size_, target_method->IsDynamicSize());
-
-  CHECK_EQ(target_method->GetNumberOfCapturedVariables(), values_.size())
-    << "number of variables captured at runtime does not match "
-    << "number of variables captured at compile time";
-
-  Closure* closure = new (memory) Closure;
-  closure->lambda_info_ = target_method;
-
-  static_assert(offsetof(Closure, captured_) == kInitialSize, "wrong initial size");
-
-  size_t written_size;
-  if (UNLIKELY(is_dynamic_size_)) {
-    // The closure size must be set dynamically (i.e. nested lambdas).
-    closure->captured_[0].dynamic_.size_ = GetSize();
-    size_t header_size = offsetof(Closure, captured_[0].dynamic_.variables_);
-    DCHECK_LE(header_size, GetSize());
-    size_t variables_size = GetSize() - header_size;
-    written_size =
-        WriteValues(target_method,
-                    closure->captured_[0].dynamic_.variables_,
-                    header_size,
-                    variables_size);
-  } else {
-    // The closure size is known statically (i.e. no nested lambdas).
-    DCHECK(GetSize() == target_method->GetStaticClosureSize());
-    size_t header_size = offsetof(Closure, captured_[0].static_variables_);
-    DCHECK_LE(header_size, GetSize());
-    size_t variables_size = GetSize() - header_size;
-    written_size =
-        WriteValues(target_method,
-                    closure->captured_[0].static_variables_,
-                    header_size,
-                    variables_size);
-  }
-
-  DCHECK_EQ(written_size, closure->GetSize());
-
-  return closure;
-}
-
-size_t ClosureBuilder::WriteValues(ArtLambdaMethod* target_method,
-                                   uint8_t variables[],
-                                   size_t header_size,
-                                   size_t variables_size) const {
-  size_t total_size = header_size;
-  const char* shorty_types = target_method->GetCapturedVariablesShortyTypeDescriptor();
-  DCHECK_STREQ(shorty_types, shorty_types_.c_str());
-
-  size_t variables_offset = 0;
-  size_t remaining_size = variables_size;
-
-  const size_t shorty_count = target_method->GetNumberOfCapturedVariables();
-  DCHECK_EQ(shorty_count, GetCaptureCount());
-
-  for (size_t i = 0; i < shorty_count; ++i) {
-    ShortyFieldType shorty{shorty_types[i]};  // NOLINT [readability/braces] [4]
-
-    size_t var_size;
-    if (LIKELY(shorty.IsStaticSize())) {
-      // TODO: needs more work to support concurrent GC, e.g. read barriers
-      if (kUseReadBarrier == false) {
-        if (UNLIKELY(shorty.IsObject())) {
-          UNIMPLEMENTED(FATAL) << "can't yet safely write objects with read barrier";
-        }
-      } else {
-        if (UNLIKELY(shorty.IsObject())) {
-          UNIMPLEMENTED(FATAL) << "writing objects not yet supported, no GC support";
-        }
-      }
-
-      var_size = shorty.GetStaticSize();
-      DCHECK_LE(var_size, sizeof(values_[i]));
-
-      // Safe even for objects (non-read barrier case) if we never suspend
-      // while the ClosureBuilder is live.
-      // FIXME: Need to add GC support for references in a closure.
-      memcpy(&variables[variables_offset], &values_[i], var_size);
-    } else {
-      DCHECK(shorty.IsLambda())
-          << " don't support writing dynamically sized types other than lambda";
-
-      ShortyFieldTypeTraits::MaxType closure_raw = values_[i];
-      Closure* nested_closure = reinterpret_cast<Closure*>(closure_raw);
-
-      DCHECK(nested_closure != nullptr);
-      nested_closure->CopyTo(&variables[variables_offset], remaining_size);
-
-      var_size = nested_closure->GetSize();
-    }
-
-    total_size += var_size;
-    DCHECK_GE(remaining_size, var_size);
-    remaining_size -= var_size;
-
-    variables_offset += var_size;
-  }
-
-  DCHECK_EQ('\0', shorty_types[shorty_count]);
-  DCHECK_EQ(variables_offset, variables_size);
-
-  return total_size;
-}
-
-
-}  // namespace lambda
-}  // namespace art