Get JIT/Interpreter working on Windows again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27037 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/Interpreter.h

@@ -0,0 +1,39 @@
+//===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Jeff Cohen and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file forces the interpreter to link in on certain operating systems.
+// (Windows).
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef EXECUTION_ENGINE_INTERPRETER_H
+#define EXECUTION_ENGINE_INTERPRETER_H
+
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+
+namespace llvm {
+  extern void LinkInInterpreter();
+}
+
+namespace {
+  struct ForceInterpreterLinking {
+    ForceInterpreterLinking() {
+      // We must reference the passes in such a way that compilers will not
+      // delete it all as dead code, even with whole program optimization,
+      // yet is effectively a NO-OP. As the compiler isn't smart enough
+      // to know that getenv() never returns -1, this will do the job.
+      if (std::getenv("bar") != (char*) -1)
+        return;
+
+      llvm::LinkInInterpreter();
+    }
+  } ForceInterpreterLinking;
+}
+
+#endif

include/llvm/ExecutionEngine/JIT.h

@@ -0,0 +1,39 @@
+//===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Jeff Cohen and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file forces the interpreter to link in on certain operating systems.
+// (Windows).
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef EXECUTION_ENGINE_JIT_H
+#define EXECUTION_ENGINE_JIT_H
+
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+
+namespace llvm {
+  extern void LinkInJIT();
+}
+
+namespace {
+  struct ForceJITLinking {
+    ForceJITLinking() {
+      // We must reference the passes in such a way that compilers will not
+      // delete it all as dead code, even with whole program optimization,
+      // yet is effectively a NO-OP. As the compiler isn't smart enough
+      // to know that getenv() never returns -1, this will do the job.
+      if (std::getenv("bar") != (char*) -1)
+        return;
+
+      llvm::LinkInJIT();
+    }
+  } ForceJITLinking;
+}
+
+#endif

lib/ExecutionEngine/Interpreter/Interpreter.cpp

@@ -24,6 +24,11 @@ static struct RegisterInterp {
   RegisterInterp() { Interpreter::Register(); }
 } InterpRegistrator;
 
+namespace llvm {
+  void LinkInInterpreter() {
+  }
+}
+
 /// create - Create a new interpreter object.  This can never fail.
 ///
 ExecutionEngine *Interpreter::create(ModuleProvider *MP) {

lib/ExecutionEngine/JIT/JIT.cpp

@@ -32,6 +32,11 @@ static struct RegisterJIT {
   RegisterJIT() { JIT::Register(); }
 } JITRegistrator;
 
+namespace llvm {
+  void LinkInJIT() {
+  }
+}
+
 JIT::JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji)
   : ExecutionEngine(MP), TM(tm), TJI(tji), state(MP) {
   setTargetData(TM.getTargetData());

tools/lli/lli.cpp

@@ -17,7 +17,8 @@
 #include "llvm/ModuleProvider.h"
 #include "llvm/Type.h"
 #include "llvm/Bytecode/Reader.h"
-#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/JIT.h"
+#include "llvm/ExecutionEngine/Interpreter.h"
 #include "llvm/ExecutionEngine/GenericValue.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/PluginLoader.h"