src/test/run-make/llvm-phase/test.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![feature(plugin, rustc_private, box_syntax)]
  12
  13 extern crate rustc;
  14 extern crate rustc_driver;
  15 extern crate rustc_llvm;
  16 #[macro_use] extern crate syntax;
  17 extern crate getopts;
  18
  19 use rustc_driver::{CompilerCalls, Compilation};
  20 use rustc_driver::driver::CompileController;
  21 use rustc::session::Session;
  22 use syntax::codemap::FileLoader;
  23 use std::io;
  24 use std::path::{PathBuf, Path};
  25
  26 struct JitLoader;
  27
  28 impl FileLoader for JitLoader {
  29     fn file_exists(&self, _: &Path) -> bool { true }
  30     fn abs_path(&self, _: &Path) -> Option<PathBuf> { None }
  31     fn read_file(&self, _: &Path) -> io::Result<String> {
  32         Ok(r#"
  33 #[no_mangle]
  34 pub fn test_add(a: i32, b: i32) -> i32 { a + b }
  35 "#.to_string())
  36     }
  37 }
  38
  39 #[derive(Copy, Clone)]
  40 struct JitCalls;
  41
  42 impl<'a> CompilerCalls<'a> for JitCalls {
  43     fn build_controller(&mut self,
  44                         _: &Session,
  45                         _: &getopts::Matches)
  46                         -> CompileController<'a> {
  47         let mut cc = CompileController::basic();
  48         cc.after_llvm.stop = Compilation::Stop;
  49         cc.after_llvm.run_callback_on_error = true;
  50         cc.after_llvm.callback = Box::new(|state| {
  51             state.session.abort_if_errors();
  52             let trans = state.trans.unwrap();
  53             assert_eq!(trans.modules.len(), 1);
  54             let rs_llmod = trans.modules[0].llmod;
  55             unsafe { rustc_llvm::LLVMDumpModule(rs_llmod) };
  56         });
  57         cc
  58     }
  59 }
  60
  61 fn main() {
  62     use rustc_driver;
  63
  64     let mut path = match std::env::args().nth(2) {
  65         Some(path) => PathBuf::from(&path),
  66         None => panic!("missing rustc path")
  67     };
  68
  69     // Remove two segments from rustc path to get sysroot.
  70     path.pop();
  71     path.pop();
  72
  73     let args: Vec<String> =
  74         format!("_ _ --sysroot {} --crate-type dylib", path.to_str().unwrap())
  75         .split(' ').map(|s| s.to_string()).collect();
  76
  77     let (result, _) = rustc_driver::run_compiler_with_file_loader(
  78         &args, &mut JitCalls, box JitLoader);
  79     if let Err(n) = result {
  80         panic!("Error {}", n);
  81     }
  82 }