Improve jitmap-ir ergonomics

src/jitmap/query/compiler.cc

@@ -160,6 +160,11 @@ class JitEngineImpl {
  auto module_ctx = ExpressionCodeGen("jitmap_ir").Compile(n, e).Finish();
  auto module = std::move(module_ctx.first);
 
+ // By default, the TargetTriple is not part of the module. This ensure that
+ // callers of `jitmap-ir` don't need to explicit the tripple in the command
+ // line chain, e.g. via `opt` or `llc` utility.
+ module->setTargetTriple(GetTargetTriple());
+
  std::string ir;
  llvm::raw_string_ostream ss{ir};
  module->print(ss, nullptr);