[llvm-exegesis] Move native target initialization code to a separate file.
Summary: This helps building internal tools on top of the library.
Reviewers: gchatelet
Subscribers: tschuett, llvm-commits, bdb, ondrasej
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62239
llvm-svn: 361385
diff --git a/llvm/tools/llvm-exegesis/lib/TargetSelect.h b/llvm/tools/llvm-exegesis/lib/TargetSelect.h
new file mode 100644
index 0000000..003d12e
--- /dev/null
+++ b/llvm/tools/llvm-exegesis/lib/TargetSelect.h
@@ -0,0 +1,40 @@
+//===-- TargetSelect.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+///
+/// Utilities to handle the creation of the native exegesis target.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_EXEGESIS_TARGET_SELECT_H
+#define LLVM_TOOLS_LLVM_EXEGESIS_TARGET_SELECT_H
+
+namespace llvm {
+namespace exegesis {
+
+#ifdef LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET
+void LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET();
+#endif
+
+// Initializes the native exegesis target, or returns false if there is no
+// native target (either because llvm-exegesis does not support the target or
+// because it's not linked in).
+inline bool InitializeNativeExegesisTarget() {
+#ifdef LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET
+ LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET();
+ return true;
+#else
+ return false;
+#endif
+}
+
+} // namespace exegesis
+} // namespace llvm
+
+#endif // LLVM_TOOLS_LLVM_EXEGESIS_TARGET_SELECT_H