Cleanup the JIT as per PR176. This renames the VM class to JIT, and merges the

VM.cpp and JIT.cpp files into JIT.cpp.  This also splits some nasty code out
into TargetSelect.cpp so that people hopefully won't notice it.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10544 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 114 deletions

diff --git a/lib/ExecutionEngine/JIT/VM.cpp b/lib/ExecutionEngine/JIT/VM.cpp
deleted file mode 100644
index 5dffa5c913..0000000000
--- a/lib/ExecutionEngine/JIT/VM.cpp
+++ /dev/null
@@ -1,114 +0,0 @@
-//===-- VM.cpp - LLVM Just in Time Compiler -------------------------------===//
-// 
-//                     The LLVM Compiler Infrastructure
-//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
-//===----------------------------------------------------------------------===//
-//
-// This tool implements a just-in-time compiler for LLVM, allowing direct
-// execution of LLVM bytecode in an efficient manner.
-//
-//===----------------------------------------------------------------------===//
-
-#include "VM.h"
-#include "llvm/Function.h"
-#include "llvm/ModuleProvider.h"
-#include "llvm/CodeGen/MachineCodeEmitter.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetJITInfo.h"
-using namespace llvm;
-
-VM::~VM() {
-  delete MCE;
-  delete &TM;
-}
-
-/// setupPassManager - Initialize the VM PassManager object with all of the
-/// passes needed for the target to generate code.
-///
-void VM::setupPassManager() {
-  // Compile LLVM Code down to machine code in the intermediate representation
-  TJI.addPassesToJITCompile(PM);
-
-  // Turn the machine code intermediate representation into bytes in memory that
-  // may be executed.
-  if (TM.addPassesToEmitMachineCode(PM, *MCE)) {
-    std::cerr << "lli: target '" << TM.getName()
-              << "' doesn't support machine code emission!\n";
-    abort();
-  }
-}
-
-/// runJITOnFunction - Run the FunctionPassManager full of
-/// just-in-time compilation passes on F, hopefully filling in
-/// GlobalAddress[F] with the address of F's machine code.
-///
-void VM::runJITOnFunction(Function *F) {
-  static bool isAlreadyCodeGenerating = false;
-  assert(!isAlreadyCodeGenerating && "Error: Recursive compilation detected!");
-
-  // JIT the function
-  isAlreadyCodeGenerating = true;
-  PM.run(*F);
-  isAlreadyCodeGenerating = false;
-}
-
-/// getPointerToFunction - This method is used to get the address of the
-/// specified function, compiling it if neccesary.
-///
-void *VM::getPointerToFunction(Function *F) {
-  void *&Addr = GlobalAddress[F];   // Check if function already code gen'd
-  if (Addr) return Addr;
-
-  // Make sure we read in the function if it exists in this Module
-  MP->materializeFunction(F);
-
-  if (F->isExternal())
-    return Addr = getPointerToNamedFunction(F->getName());
-
-  runJITOnFunction(F);
-  assert(Addr && "Code generation didn't add function to GlobalAddress table!");
-  return Addr;
-}
-
-// getPointerToFunctionOrStub - If the specified function has been
-// code-gen'd, return a pointer to the function.  If not, compile it, or use
-// a stub to implement lazy compilation if available.
-//
-void *VM::getPointerToFunctionOrStub(Function *F) {
-  // If we have already code generated the function, just return the address.
-  std::map<const GlobalValue*, void *>::iterator I = GlobalAddress.find(F);
-  if (I != GlobalAddress.end()) return I->second;
-
-  // If the target supports "stubs" for functions, get a stub now.
-  if (void *Ptr = TJI.getJITStubForFunction(F, *MCE))
-    return Ptr;
-
-  // Otherwise, if the target doesn't support it, just codegen the function.
-  return getPointerToFunction(F);
-}
-
-/// recompileAndRelinkFunction - This method is used to force a function
-/// which has already been compiled, to be compiled again, possibly
-/// after it has been modified. Then the entry to the old copy is overwritten
-/// with a branch to the new copy. If there was no old copy, this acts
-/// just like VM::getPointerToFunction().
-///
-void *VM::recompileAndRelinkFunction(Function *F) {
-  void *&Addr = GlobalAddress[F];   // Check if function already code gen'd
-
-  // If it's not already compiled (this is kind of weird) there is no
-  // reason to patch it up.
-  if (!Addr) { return getPointerToFunction (F); }
-
-  void *OldAddr = Addr;
-  Addr = 0;
-  MachineFunction::destruct(F);
-  runJITOnFunction(F);
-  assert(Addr && "Code generation didn't add function to GlobalAddress table!");
-  TJI.replaceMachineCodeForFunction(OldAddr, Addr);
-  return Addr;
-}