xo-jit: + llvm module instrumentation methods

include/xo/jit/Jit.hpp

@@ -75,6 +75,17 @@ namespace xo {
             static llvm::Expected<std::unique_ptr<Jit>> make_aux();
             static xo::ref::rp<Jit> make();
 
+            // ----- module access -----
+
+            /** target triple = string describing target host for codegen **/
+            const std::string & target_triple() const;
+            /** append function names defined in attached module to *p_v **/
+            std::vector<std::string> get_function_name_v();
+
+            /** write state of execution session (all the associated dynamic libraries) **/
+            void dump_execution_session();
+
+            // ----- jit code generation -----
 
             llvm::Value * codegen_constant(ref::brw<xo::ast::ConstantInterface> expr);
             llvm::Function * codegen_primitive(ref::brw<xo::ast::PrimitiveInterface> expr);

include/xo/jit/KaleidoscopeJit.hpp

@@ -50,6 +50,7 @@ namespace xo {
             using SelfExecutorProcessControl = llvm::orc::SelfExecutorProcessControl;
 
         private:
+            /* execution session - represents a currenlty-running jit program */
             std::unique_ptr<ExecutionSession> ES;
 
             DataLayout DL;
@@ -118,6 +119,11 @@ namespace xo {
             llvm::Expected<ExecutorSymbolDef> lookup(StringRef Name) {
                 return ES->lookup({&MainJD}, Mangle(Name.str()));
             }
+
+            /* dump */
+            void dump_execution_session() {
+                ES->dump(llvm::errs());
+            }
         };
 
     } // end namespace jit

src/jit/Jit.cpp

@@ -127,6 +127,23 @@ namespace xo {
                 jit_object_layer_.setAutoClaimResponsibilityForObjectSymbols(true);
             }
 #endif
+        const std::string &
+        Jit::target_triple() const {
+            return llvm_module_->getTargetTriple();
+        }
+
+        std::vector<std::string>
+        Jit::get_function_name_v() {
+            std::vector<std::string> retval;
+            for (const auto & fn_name : *llvm_module_)
+                retval.push_back(fn_name.getName().str());
+
+            return retval;
+        } /*get_function_names*/
+
+        void
+        Jit::dump_execution_session() {
+            kal_jit_->dump_execution_session();
         }
 
         llvm::Value *