Revert "TargetMachine: Merge TargetMachine and LLVMTargetMachine"

Reverting to investigate layering effects of MCJIT not linking
libCodeGen but using TargetMachine::getNameWithPrefix() breaking the
lldb bots.

This reverts commit r315633.

llvm-svn: 315637

1 files changed, 244 insertions, 0 deletions

diff --git a/llvm/lib/Target/TargetMachineC.cpp b/llvm/lib/Target/TargetMachineC.cpp
new file mode 100644
index 00000000000..210375ff828
--- /dev/null
+++ b/llvm/lib/Target/TargetMachineC.cpp
@@ -0,0 +1,244 @@
+//===-- TargetMachine.cpp -------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the LLVM-C part of TargetMachine.h
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/Core.h"
+#include "llvm-c/Target.h"
+#include "llvm-c/TargetMachine.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/CodeGenCWrappers.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
+#include <cassert>
+#include <cstdlib>
+#include <cstring>
+
+using namespace llvm;
+
+static TargetMachine *unwrap(LLVMTargetMachineRef P) {
+  return reinterpret_cast<TargetMachine *>(P);
+}
+static Target *unwrap(LLVMTargetRef P) {
+  return reinterpret_cast<Target*>(P);
+}
+static LLVMTargetMachineRef wrap(const TargetMachine *P) {
+  return reinterpret_cast<LLVMTargetMachineRef>(const_cast<TargetMachine *>(P));
+}
+static LLVMTargetRef wrap(const Target * P) {
+  return reinterpret_cast<LLVMTargetRef>(const_cast<Target*>(P));
+}
+
+LLVMTargetRef LLVMGetFirstTarget() {
+  if (TargetRegistry::targets().begin() == TargetRegistry::targets().end()) {
+    return nullptr;
+  }
+
+  const Target *target = &*TargetRegistry::targets().begin();
+  return wrap(target);
+}
+LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T) {
+  return wrap(unwrap(T)->getNext());
+}
+
+LLVMTargetRef LLVMGetTargetFromName(const char *Name) {
+  StringRef NameRef = Name;
+  auto I = find_if(TargetRegistry::targets(),
+                   [&](const Target &T) { return T.getName() == NameRef; });
+  return I != TargetRegistry::targets().end() ? wrap(&*I) : nullptr;
+}
+
+LLVMBool LLVMGetTargetFromTriple(const char* TripleStr, LLVMTargetRef *T,
+                                 char **ErrorMessage) {
+  std::string Error;
+
+  *T = wrap(TargetRegistry::lookupTarget(TripleStr, Error));
+
+  if (!*T) {
+    if (ErrorMessage)
+      *ErrorMessage = strdup(Error.c_str());
+
+    return 1;
+  }
+
+  return 0;
+}
+
+const char * LLVMGetTargetName(LLVMTargetRef T) {
+  return unwrap(T)->getName();
+}
+
+const char * LLVMGetTargetDescription(LLVMTargetRef T) {
+  return unwrap(T)->getShortDescription();
+}
+
+LLVMBool LLVMTargetHasJIT(LLVMTargetRef T) {
+  return unwrap(T)->hasJIT();
+}
+
+LLVMBool LLVMTargetHasTargetMachine(LLVMTargetRef T) {
+  return unwrap(T)->hasTargetMachine();
+}
+
+LLVMBool LLVMTargetHasAsmBackend(LLVMTargetRef T) {
+  return unwrap(T)->hasMCAsmBackend();
+}
+
+LLVMTargetMachineRef LLVMCreateTargetMachine(LLVMTargetRef T,
+        const char *Triple, const char *CPU, const char *Features,
+        LLVMCodeGenOptLevel Level, LLVMRelocMode Reloc,
+        LLVMCodeModel CodeModel) {
+  Optional<Reloc::Model> RM;
+  switch (Reloc){
+    case LLVMRelocStatic:
+      RM = Reloc::Static;
+      break;
+    case LLVMRelocPIC:
+      RM = Reloc::PIC_;
+      break;
+    case LLVMRelocDynamicNoPic:
+      RM = Reloc::DynamicNoPIC;
+      break;
+    default:
+      break;
+  }
+
+  bool JIT;
+  Optional<CodeModel::Model> CM = unwrap(CodeModel, JIT);
+
+  CodeGenOpt::Level OL;
+  switch (Level) {
+    case LLVMCodeGenLevelNone:
+      OL = CodeGenOpt::None;
+      break;
+    case LLVMCodeGenLevelLess:
+      OL = CodeGenOpt::Less;
+      break;
+    case LLVMCodeGenLevelAggressive:
+      OL = CodeGenOpt::Aggressive;
+      break;
+    default:
+      OL = CodeGenOpt::Default;
+      break;
+  }
+
+  TargetOptions opt;
+  return wrap(unwrap(T)->createTargetMachine(Triple, CPU, Features, opt, RM, CM,
+                                             OL, JIT));
+}
+
+void LLVMDisposeTargetMachine(LLVMTargetMachineRef T) { delete unwrap(T); }
+
+LLVMTargetRef LLVMGetTargetMachineTarget(LLVMTargetMachineRef T) {
+  const Target* target = &(unwrap(T)->getTarget());
+  return wrap(target);
+}
+
+char* LLVMGetTargetMachineTriple(LLVMTargetMachineRef T) {
+  std::string StringRep = unwrap(T)->getTargetTriple().str();
+  return strdup(StringRep.c_str());
+}
+
+char* LLVMGetTargetMachineCPU(LLVMTargetMachineRef T) {
+  std::string StringRep = unwrap(T)->getTargetCPU();
+  return strdup(StringRep.c_str());
+}
+
+char* LLVMGetTargetMachineFeatureString(LLVMTargetMachineRef T) {
+  std::string StringRep = unwrap(T)->getTargetFeatureString();
+  return strdup(StringRep.c_str());
+}
+
+void LLVMSetTargetMachineAsmVerbosity(LLVMTargetMachineRef T,
+                                      LLVMBool VerboseAsm) {
+  unwrap(T)->Options.MCOptions.AsmVerbose = VerboseAsm;
+}
+
+LLVMTargetDataRef LLVMCreateTargetDataLayout(LLVMTargetMachineRef T) {
+  return wrap(new DataLayout(unwrap(T)->createDataLayout()));
+}
+
+static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
+                                      raw_pwrite_stream &OS,
+                                      LLVMCodeGenFileType codegen,
+                                      char **ErrorMessage) {
+  TargetMachine* TM = unwrap(T);
+  Module* Mod = unwrap(M);
+
+  legacy::PassManager pass;
+
+  std::string error;
+
+  Mod->setDataLayout(TM->createDataLayout());
+
+  TargetMachine::CodeGenFileType ft;
+  switch (codegen) {
+    case LLVMAssemblyFile:
+      ft = TargetMachine::CGFT_AssemblyFile;
+      break;
+    default:
+      ft = TargetMachine::CGFT_ObjectFile;
+      break;
+  }
+  if (TM->addPassesToEmitFile(pass, OS, ft)) {
+    error = "TargetMachine can't emit a file of this type";
+    *ErrorMessage = strdup(error.c_str());
+    return true;
+  }
+
+  pass.run(*Mod);
+
+  OS.flush();
+  return false;
+}
+
+LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
+  char* Filename, LLVMCodeGenFileType codegen, char** ErrorMessage) {
+  std::error_code EC;
+  raw_fd_ostream dest(Filename, EC, sys::fs::F_None);
+  if (EC) {
+    *ErrorMessage = strdup(EC.message().c_str());
+    return true;
+  }
+  bool Result = LLVMTargetMachineEmit(T, M, dest, codegen, ErrorMessage);
+  dest.flush();
+  return Result;
+}
+
+LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
+  LLVMModuleRef M, LLVMCodeGenFileType codegen, char** ErrorMessage,
+  LLVMMemoryBufferRef *OutMemBuf) {
+  SmallString<0> CodeString;
+  raw_svector_ostream OStream(CodeString);
+  bool Result = LLVMTargetMachineEmit(T, M, OStream, codegen, ErrorMessage);
+
+  StringRef Data = OStream.str();
+  *OutMemBuf =
+      LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
+  return Result;
+}
+
+char *LLVMGetDefaultTargetTriple(void) {
+  return strdup(sys::getDefaultTargetTriple().c_str());
+}
+
+void LLVMAddAnalysisPasses(LLVMTargetMachineRef T, LLVMPassManagerRef PM) {
+  unwrap(PM)->add(
+      createTargetTransformInfoWrapperPass(unwrap(T)->getTargetIRAnalysis()));
+}