Create separate Android.mk for main build targets

The runtime, compiler, dex2oat, and oatdump now are in seperate trees
to prevent dependency creep.  They can now be individually built
without rebuilding the rest of the art projects. dalvikvm and jdwpspy
were already this way. Builds in the art directory should behave as
before, building everything including tests.

Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81

1 files changed, 71 insertions, 0 deletions

diff --git a/compiler/llvm/md_builder.h b/compiler/llvm/md_builder.h
new file mode 100644
index 0000000000..79a7caa04c
--- /dev/null
+++ b/compiler/llvm/md_builder.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef ART_SRC_COMPILER_LLVM_MD_BUILDER_H_
+#define ART_SRC_COMPILER_LLVM_MD_BUILDER_H_
+
+#include "backend_types.h"
+
+#include "llvm/IR/MDBuilder.h"
+
+#include <cstring>
+
+namespace llvm {
+  class LLVMContext;
+  class MDNode;
+}
+
+namespace art {
+namespace llvm {
+
+typedef ::llvm::MDBuilder LLVMMDBuilder;
+
+class MDBuilder : public LLVMMDBuilder {
+ public:
+  MDBuilder(::llvm::LLVMContext& context)
+     : LLVMMDBuilder(context), tbaa_root_(createTBAARoot("Art TBAA Root")) {
+    std::memset(tbaa_special_type_, 0, sizeof(tbaa_special_type_));
+    std::memset(tbaa_memory_jtype_, 0, sizeof(tbaa_memory_jtype_));
+
+    // Pre-generate the MDNode for static branch prediction
+    // 64 and 4 are the llvm.expect's default values
+    expect_cond_[kLikely] = createBranchWeights(64, 4);
+    expect_cond_[kUnlikely] = createBranchWeights(4, 64);
+  }
+
+  ::llvm::MDNode* GetTBAASpecialType(TBAASpecialType special_ty);
+  ::llvm::MDNode* GetTBAAMemoryJType(TBAASpecialType special_ty, JType j_ty);
+
+  ::llvm::MDNode* GetBranchWeights(ExpectCond expect) {
+    DCHECK_LT(expect, MAX_EXPECT) << "MAX_EXPECT is not for branch weight";
+    return expect_cond_[expect];
+  }
+
+ private:
+  ::llvm::MDNode* const tbaa_root_;
+  ::llvm::MDNode* tbaa_special_type_[MAX_TBAA_SPECIAL_TYPE];
+  // There are 3 categories of memory types will not alias: array element, instance field, and
+  // static field.
+  ::llvm::MDNode* tbaa_memory_jtype_[3][MAX_JTYPE];
+
+  ::llvm::MDNode* expect_cond_[MAX_EXPECT];
+};
+
+
+} // namespace llvm
+} // namespace art
+
+#endif // ART_SRC_COMPILER_LLVM_MD_BUILDER_H_