1 files changed, 29 insertions, 12 deletions
diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs
index 64fedb7bc1a..f0612eaba80 100644
--- a/compiler/rustc_codegen_llvm/src/lib.rs
+++ b/compiler/rustc_codegen_llvm/src/lib.rs
@@ -6,11 +6,9 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(bool_to_option)]
-#![feature(const_cstr_unchecked)]
 #![feature(crate_visibility_modifier)]
+#![feature(let_else)]
 #![feature(extern_types)]
-#![feature(in_band_lifetimes)]
-#![feature(iter_zip)]
 #![feature(nll)]
 #![recursion_limit = "256"]
 
@@ -102,14 +100,6 @@ impl ExtraBackendMethods for LlvmCodegenBackend {
         ModuleLlvm::new_metadata(tcx, mod_name)
     }
 
-    fn write_compressed_metadata<'tcx>(
-        &self,
-        tcx: TyCtxt<'tcx>,
-        metadata: &EncodedMetadata,
-        llvm_module: &mut ModuleLlvm,
-    ) {
-        base::write_compressed_metadata(tcx, metadata, llvm_module)
-    }
     fn codegen_allocator<'tcx>(
         &self,
         tcx: TyCtxt<'tcx>,
@@ -288,6 +278,31 @@ impl CodegenBackend for LlvmCodegenBackend {
                 }
                 println!();
             }
+            PrintRequest::StackProtectorStrategies => {
+                println!(
+                    r#"Available stack protector strategies:
+    all
+        Generate stack canaries in all functions.
+
+    strong
+        Generate stack canaries in a function if it either:
+        - has a local variable of `[T; N]` type, regardless of `T` and `N`
+        - takes the address of a local variable.
+
+          (Note that a local variable being borrowed is not equivalent to its
+          address being taken: e.g. some borrows may be removed by optimization,
+          while by-value argument passing may be implemented with reference to a
+          local stack variable in the ABI.)
+
+    basic
+        Generate stack canaries in functions with:
+        - local variables of `[T; N]` type, where `T` is byte-sized and `N` > 8.
+
+    none
+        Do not generate stack canaries.
+"#
+                );
+            }
             req => llvm_util::print(req, sess),
         }
     }
@@ -323,6 +338,7 @@ impl CodegenBackend for LlvmCodegenBackend {
         &self,
         ongoing_codegen: Box<dyn Any>,
         sess: &Session,
+        outputs: &OutputFilenames,
     ) -> Result<(CodegenResults, FxHashMap<WorkProductId, WorkProduct>), ErrorReported> {
         let (codegen_results, work_products) = ongoing_codegen
             .downcast::<rustc_codegen_ssa::back::write::OngoingCodegen<LlvmCodegenBackend>>()
@@ -331,7 +347,8 @@ impl CodegenBackend for LlvmCodegenBackend {
 
         sess.time("llvm_dump_timing_file", || {
             if sess.opts.debugging_opts.llvm_time_trace {
-                llvm_util::time_trace_profiler_finish("llvm_timings.json");
+                let file_name = outputs.with_extension("llvm_timings.json");
+                llvm_util::time_trace_profiler_finish(&file_name);
             }
         });