Compiler kernel fusion for RenderScript.
This was started by Tobias Grosser during his internship at Google in 2013.
This CL includes his original changes and generalization to make it work with
the new proposed ScriptGroup API and made the ImageProcessing processing work
with this.
An enabling CL is needed in the RenderScript runtime, which I will post
seperately.
Change-Id: Ia73ea917a126a5055ec97f13d90a5feaafd6a2f5
diff --git a/lib/Renderscript/RSMetadata.cpp b/lib/Renderscript/RSMetadata.cpp
new file mode 100644
index 0000000..841ade7
--- /dev/null
+++ b/lib/Renderscript/RSMetadata.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright 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 "bcc/Renderscript/RSMetadata.h"
+
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/IR/Module.h"
+
+// Name of metadata node where pragma info resides (should be synced with
+// slang.cpp)
+const llvm::StringRef pragma_metadata_name("#pragma");
+
+/*
+ * The following names should be synced with the one appeared in
+ * slang_rs_metadata.h.
+ */
+
+// Name of metadata node where exported variable names reside
+static const llvm::StringRef
+export_var_metadata_name("#rs_export_var");
+
+// Name of metadata node where exported function names reside
+static const llvm::StringRef
+export_func_metadata_name("#rs_export_func");
+
+// Name of metadata node where exported ForEach name information resides
+static const llvm::StringRef
+export_foreach_name_metadata_name("#rs_export_foreach_name");
+
+// Name of metadata node where exported ForEach signature information resides
+static const llvm::StringRef
+export_foreach_metadata_name("#rs_export_foreach");
+
+// Name of metadata node where RS object slot info resides (should be
+static const llvm::StringRef
+object_slot_metadata_name("#rs_object_slots");
+
+bcc::RSMetadata::RSMetadata(llvm::Module &Module) : Module(Module) {}
+
+void bcc::RSMetadata::deleteAll() {
+ std::vector<llvm::StringRef> MDNames;
+ MDNames.push_back(pragma_metadata_name);
+ MDNames.push_back(export_var_metadata_name);
+ MDNames.push_back(export_func_metadata_name);
+ MDNames.push_back(export_foreach_name_metadata_name);
+ MDNames.push_back(export_foreach_metadata_name);
+ MDNames.push_back(object_slot_metadata_name);
+
+ for (std::vector<llvm::StringRef>::iterator MI = MDNames.begin(),
+ ME = MDNames.end();
+ MI != ME; ++MI) {
+ llvm::NamedMDNode *MDNode = Module.getNamedMetadata(*MI);
+ if (MDNode) {
+ MDNode->eraseFromParent();
+ }
+ }
+}
+
+void bcc::RSMetadata::markForEachFunction(llvm::Function &Function,
+ uint32_t Signature) {
+ llvm::NamedMDNode *ExportForEachNameMD;
+ llvm::NamedMDNode *ExportForEachMD;
+
+ llvm::MDString *MDString;
+ llvm::MDNode *MDNode;
+
+ ExportForEachNameMD =
+ Module.getOrInsertNamedMetadata(export_foreach_name_metadata_name);
+ MDString = llvm::MDString::get(Module.getContext(), Function.getName());
+ MDNode = llvm::MDNode::get(Module.getContext(), MDString);
+ ExportForEachNameMD->addOperand(MDNode);
+
+ ExportForEachMD =
+ Module.getOrInsertNamedMetadata(export_foreach_metadata_name);
+ MDString = llvm::MDString::get(Module.getContext(),
+ llvm::utostr_32(Signature));
+ MDNode = llvm::MDNode::get(Module.getContext(), MDString);
+ ExportForEachMD->addOperand(MDNode);
+}