Register promotion support for 64-bit targets
Not sufficiently tested for 64-bit targets, but should be
fairly close.
A significant amount of refactoring could stil be done, (in
later CLs).
With this change we are not making any changes to the vmap
scheme. As a result, it is a requirement that if a vreg
is promoted to both a 32-bit view and the low half of a
64-bit view it must share the same physical register. We
may change this restriction later on to allow for more flexibility
for 32-bit Arm.
For example, if v4, v5, v4/v5 and v5/v6 are all hot enough to
promote, we'd end up with something like:
v4 (as an int) -> r10
v4/v5 (as a long) -> r10
v5 (as an int) -> r11
v5/v6 (as a long) -> r11
Fix a couple of ARM64 bugs on the way...
Change-Id: I6a152b9c164d9f1a053622266e165428045362f3
diff --git a/compiler/dex/reg_storage_eq.h b/compiler/dex/reg_storage_eq.h
new file mode 100644
index 0000000..b688dac
--- /dev/null
+++ b/compiler/dex/reg_storage_eq.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2014 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_COMPILER_DEX_REG_STORAGE_EQ_H_
+#define ART_COMPILER_DEX_REG_STORAGE_EQ_H_
+
+#include "reg_storage.h"
+
+namespace art {
+
+// Define == and != operators for RegStorage. These are based on exact equality of the reg storage,
+// that is, 32b and 64b views of the same physical register won't match. This is often not the
+// intended behavior, so be careful when including this header.
+
+inline bool operator==(const RegStorage& lhs, const RegStorage& rhs) {
+ return lhs.ExactlyEquals(rhs);
+}
+
+inline bool operator!=(const RegStorage& lhs, const RegStorage& rhs) {
+ return lhs.NotExactlyEquals(rhs);
+}
+
+} // namespace art
+
+#endif // ART_COMPILER_DEX_REG_STORAGE_EQ_H_
+