Auto merge of #68414 - michaelwoerister:share-drop-glue, r=alexcrichton

[rust.git] / src / librustc_codegen_llvm / lib.rs

diff --git a/src/librustc_codegen_llvm/lib.rs b/src/librustc_codegen_llvm/lib.rs
index 349cff79c784399a9f9f5c92f76c7a24633d9ced..70e3874035b601953e9ca926736599c29dec39ba 100644 (file)
--- a/src/librustc_codegen_llvm/lib.rs
+++ b/src/librustc_codegen_llvm/lib.rs
@@ -19,6 +19,7 @@
 #![feature(link_args)]
 #![feature(static_nobundle)]
 #![feature(trusted_len)]
+#![recursion_limit = "256"]
 
 use back::write::{create_informational_target_machine, create_target_machine};
 use rustc_span::symbol::Symbol;
@@ -32,6 +33,7 @@
 use rustc_errors::{FatalError, Handler};
 use std::any::Any;
 use std::ffi::CStr;
+use std::fs;
 use std::sync::Arc;
 use syntax::expand::allocator::AllocatorKind;
 
@@ -43,6 +45,7 @@
 use rustc::util::common::ErrorReported;
 use rustc_codegen_ssa::ModuleCodegen;
 use rustc_codegen_utils::codegen_backend::CodegenBackend;
+use rustc_serialize::json;
 
 mod back {
     pub mod archive;
@@ -108,9 +111,8 @@ fn compile_codegen_unit(
         &self,
         tcx: TyCtxt<'_>,
         cgu_name: Symbol,
-        tx: &std::sync::mpsc::Sender<Box<dyn Any + Send>>,
-    ) {
-        base::compile_codegen_unit(tcx, cgu_name, tx);
+    ) -> (ModuleCodegen<ModuleLlvm>, u64) {
+        base::compile_codegen_unit(tcx, cgu_name)
     }
     fn target_machine_factory(
         &self,
@@ -283,7 +285,7 @@ fn join_codegen_and_link(
             rustc_codegen_ssa::back::write::dump_incremental_data(&codegen_results);
         }
 
-        sess.time("serialize work products", move || {
+        sess.time("serialize_work_products", move || {
             rustc_incremental::save_work_product_index(sess, &dep_graph, work_products)
         });
 
@@ -298,9 +300,21 @@ fn join_codegen_and_link(
             return Ok(());
         }
 
+        if sess.opts.debugging_opts.no_link {
+            // FIXME: use a binary format to encode the `.rlink` file
+            let rlink_data = json::encode(&codegen_results).map_err(|err| {
+                sess.fatal(&format!("failed to encode rlink: {}", err));
+            })?;
+            let rlink_file = outputs.with_extension("rlink");
+            fs::write(&rlink_file, rlink_data).map_err(|err| {
+                sess.fatal(&format!("failed to write file {}: {}", rlink_file.display(), err));
+            })?;
+            return Ok(());
+        }
+
         // Run the linker on any artifacts that resulted from the LLVM run.
         // This should produce either a finished executable or library.
-        sess.time("linking", || {
+        sess.time("link_crate", || {
             use crate::back::archive::LlvmArchiveBuilder;
             use rustc_codegen_ssa::back::link::link_binary;