examples/LLJITExamples/ExampleModules.h

   1 //===----- ExampleModules.h - IR modules for LLJIT examples -----*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // Example modules for LLJIT examples
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_EXAMPLES_HOWTOUSELLJIT_EXAMPLEMODULES_H
  14 #define LLVM_EXAMPLES_HOWTOUSELLJIT_EXAMPLEMODULES_H
  15
  16 #include "llvm/ADT/StringRef.h"
  17 #include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h"
  18 #include "llvm/IR/LLVMContext.h"
  19 #include "llvm/IR/Module.h"
  20 #include "llvm/IRReader/IRReader.h"
  21 #include "llvm/Support/Error.h"
  22 #include "llvm/Support/SourceMgr.h"
  23
  24 const llvm::StringRef Add1Example =
  25     R"(
  26   define i32 @add1(i32 %x) {
  27   entry:
  28     %r = add nsw i32 %x, 1
  29     ret i32 %r
  30   }
  31 )";
  32
  33 inline llvm::Expected<llvm::orc::ThreadSafeModule>
  34 parseExampleModule(llvm::StringRef Source, llvm::StringRef Name) {
  35   using namespace llvm;
  36   using namespace llvm::orc;
  37
  38   auto Ctx = std::make_unique<LLVMContext>();
  39   SMDiagnostic Err;
  40   auto M = parseIR(MemoryBufferRef(Source, Name), Err, *Ctx);
  41
  42   if (!M) {
  43     std::string ErrMsg;
  44     {
  45       raw_string_ostream ErrStream(ErrMsg);
  46       Err.print("", ErrStream);
  47     }
  48     return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode());
  49   }
  50
  51   return ThreadSafeModule(std::move(M), std::move(Ctx));
  52 }
  53
  54 #endif // LLVM_EXAMPLES_HOWTOUSELLJIT_EXAMPLEMODULES_H