1 files changed, 0 insertions, 83 deletions
diff --git a/src/passes/DropReturnValues.cpp b/src/passes/DropReturnValues.cpp
deleted file mode 100644
index 8715f3f61..000000000
--- a/src/passes/DropReturnValues.cpp
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright 2016 WebAssembly Community Group participants
- *
- * 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.
- */
-
-//
-// Stops using return values from set_local and store nodes.
-//
-
-#include <wasm.h>
-#include <pass.h>
-#include <ast_utils.h>
-#include <wasm-builder.h>
-
-namespace wasm {
-
-struct DropReturnValues : public WalkerPass<PostWalker<DropReturnValues, Visitor<DropReturnValues>>> {
-  bool isFunctionParallel() override { return true; }
-
-  Pass* create() override { return new DropReturnValues; }
-
-  std::vector<Expression*> expressionStack;
-
-  void visitSetLocal(SetLocal* curr) {
-    if (ExpressionAnalyzer::isResultUsed(expressionStack, getFunction())) {
-      Builder builder(*getModule());
-      replaceCurrent(builder.makeSequence(
-        curr,
-        builder.makeGetLocal(curr->index, curr->type)
-      ));
-    }
-  }
-
-  void visitStore(Store* curr) {
-    if (ExpressionAnalyzer::isResultUsed(expressionStack, getFunction())) {
-      Index index = getFunction()->getNumLocals();
-      getFunction()->vars.emplace_back(curr->type);
-      Builder builder(*getModule());
-      replaceCurrent(builder.makeSequence(
-        builder.makeSequence(
-          builder.makeSetLocal(index, curr->value),
-          curr
-        ),
-        builder.makeGetLocal(index, curr->type)
-      ));
-      curr->value = builder.makeGetLocal(index, curr->type);
-    }
-  }
-
-  static void visitPre(DropReturnValues* self, Expression** currp) {
-    self->expressionStack.push_back(*currp);
-  }
-
-  static void visitPost(DropReturnValues* self, Expression** currp) {
-    self->expressionStack.pop_back();
-  }
-
-  static void scan(DropReturnValues* self, Expression** currp) {
-    self->pushTask(visitPost, currp);
-
-    WalkerPass<PostWalker<DropReturnValues, Visitor<DropReturnValues>>>::scan(self, currp);
-
-    self->pushTask(visitPre, currp);
-  }
-};
-
-Pass *createDropReturnValuesPass() {
-  return new DropReturnValues();
-}
-
-} // namespace wasm
-