[llvm] r361385 - [llvm-exegesis] Move native target initialization code to a separate file.

[Clement Courbet via llvm-commits]

Author: courbet
Date: Wed May 22 06:50:16 2019
New Revision: 361385

URL: http://llvm.org/viewvc/llvm-project?rev=361385&view=rev
Log:
[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

Added:
    llvm/trunk/tools/llvm-exegesis/lib/TargetSelect.h
Modified:
    llvm/trunk/tools/llvm-exegesis/llvm-exegesis.cpp

Added: llvm/trunk/tools/llvm-exegesis/lib/TargetSelect.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-exegesis/lib/TargetSelect.h?rev=361385&view=auto
==============================================================================
--- llvm/trunk/tools/llvm-exegesis/lib/TargetSelect.h (added)
+++ llvm/trunk/tools/llvm-exegesis/lib/TargetSelect.h Wed May 22 06:50:16 2019
@@ -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

Modified: llvm/trunk/tools/llvm-exegesis/llvm-exegesis.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-exegesis/llvm-exegesis.cpp?rev=361385&r1=361384&r2=361385&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-exegesis/llvm-exegesis.cpp (original)
+++ llvm/trunk/tools/llvm-exegesis/llvm-exegesis.cpp Wed May 22 06:50:16 2019
@@ -18,6 +18,7 @@
 #include "lib/LlvmState.h"
 #include "lib/PerfHelper.h"
 #include "lib/Target.h"
+#include "lib/TargetSelect.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/MC/MCInstBuilder.h"
@@ -145,10 +146,6 @@ static cl::opt<bool>
 
 static ExitOnError ExitOnErr;
 
-#ifdef LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET
-void LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET();
-#endif
-
 // Checks that only one of OpcodeNames, OpcodeIndex or SnippetsFile is provided,
 // and returns the opcode indices or {} if snippets should be read from
 // `SnippetsFile`.
@@ -370,9 +367,7 @@ void benchmarkMain() {
   llvm::InitializeNativeTarget();
   llvm::InitializeNativeTargetAsmPrinter();
   llvm::InitializeNativeTargetAsmParser();
-#ifdef LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET
-  LLVM_EXEGESIS_INITIALIZE_NATIVE_TARGET();
-#endif
+  InitializeNativeExegesisTarget();
 
   const LLVMState State(CpuName);
   const auto Opcodes = getOpcodesOrDie(State.getInstrInfo());