Change .ir file extension to .ll (PLC-lang#825)

Author: volsa

.gitignore

@@ -4,7 +4,7 @@
 **/*.rs.bk
 **/*.un~
 **/*.toml~
-*.ir
+*.ll
 *.o
 *.bc
 *.a

src/cli.rs

@@ -344,7 +344,7 @@ mod cli_tests {
     #[test]
     fn test_default_output_names() {
         let parameters = CompileParameters::parse(vec_of_strings!("alpha.st", "--ir")).unwrap();
-        assert_eq!(parameters.output_name(), "alpha.ir".to_string());
+        assert_eq!(parameters.output_name(), "alpha.ll".to_string());
 
         let parameters = CompileParameters::parse(vec_of_strings!("bravo", "--shared")).unwrap();
         assert_eq!(parameters.output_name(), "bravo.so".to_string());

src/lib.rs

@@ -1112,7 +1112,7 @@ pub fn get_output_name(output_name: Option<&str>, out_format: FormatOption, inpu
                 FormatOption::Relocatable => ".o",
                 FormatOption::Object => ".o",
                 FormatOption::Shared | FormatOption::PIC => ".so",
-                FormatOption::IR => ".ir",
+                FormatOption::IR => ".ll",
                 FormatOption::Static | FormatOption::None => "",
             };
             format!("{input}{ending}")