[LLVM][RUNTIME] Fix RISC-V CodeModel propagation to ORCJIT runtime executor (#17347)

Author: cbalint13

src/target/llvm/llvm_instance.h

@@ -215,6 +215,16 @@ class LLVMTargetInfo {
    * \return `llvm::TargetOptions` object for this target
    */
   const llvm::TargetOptions& GetTargetOptions() const { return target_options_; }
+  /*!
+   * \brief Get the LLVM target reloc model
+   * \return `llvm::Reloc::Model` object for this target
+   */
+  const llvm::Reloc::Model& GetTargetRelocModel() const { return reloc_model_; }
+  /*!
+   * \brief Get the LLVM target code model
+   * \return `llvm::CodeModel::Model` object for this target
+   */
+  const llvm::CodeModel::Model& GetTargetCodeModel() const { return code_model_; }
   /*!
    * \brief Get fast math flags
    * \return `llvm::FastMathFlags` for this target

src/target/llvm/llvm_module.cc

@@ -482,6 +482,14 @@ void LLVMModuleNode::InitORCJIT() {
   tm_builder.setCodeGenOptLevel(llvm::CodeGenOptLevel::Aggressive);
 #endif
 
+  // Default is no explicit JIT code & reloc model
+  // Propagate instance code & reloc for RISCV case.
+  auto arch = tm_builder.getTargetTriple().getArch();
+  if (arch == llvm::Triple::riscv32 || arch == llvm::Triple::riscv64) {
+    tm_builder.setRelocationModel(llvm_target->GetTargetRelocModel());
+    tm_builder.setCodeModel(llvm_target->GetTargetCodeModel());
+  }
+
   // create the taget machine
   std::unique_ptr<llvm::TargetMachine> tm = llvm::cantFail(tm_builder.createTargetMachine());
   if (!IsCompatibleWithHost(tm.get())) {