Show files produced by --emit foo in json artifact notifications

Author: pacak

compiler/rustc_codegen_gcc/src/back/write.rs

@@ -78,14 +78,20 @@ pub(crate) unsafe fn codegen(
 
         if config.emit_ir {
             let out = cgcx.output_filenames.temp_path(OutputType::LlvmAssembly, module_name);
-            std::fs::write(out, "").expect("write file");
+            std::fs::write(&out, "").expect("write file");
+            if config.json_artifact_notifications {
+                dcx.emit_artifact_notification(&out, "llvm_ir");
+            }
         }
 
         if config.emit_asm {
             let _timer =
                 cgcx.prof.generic_activity_with_arg("GCC_module_codegen_emit_asm", &*module.name);
             let path = cgcx.output_filenames.temp_path(OutputType::Assembly, module_name);
             context.compile_to_file(OutputKind::Assembler, path.to_str().expect("path to str"));
+            if config.json_artifact_notifications {
+                dcx.emit_artifact_notification(&path, "asm");
+            }
         }
 
         match config.emit_obj {

compiler/rustc_codegen_llvm/src/back/write.rs

@@ -781,6 +781,10 @@ pub(crate) unsafe fn codegen(
             }
 
             result.into_result().map_err(|()| llvm_err(dcx, LlvmError::WriteIr { path: &out }))?;
+
+            if config.json_artifact_notifications {
+                dcx.emit_artifact_notification(&out, "llvm_ir");
+            }
         }
 
         if config.emit_asm {
@@ -809,6 +813,10 @@ pub(crate) unsafe fn codegen(
                     &cgcx.prof,
                 )
             })?;
+
+            if config.json_artifact_notifications {
+                dcx.emit_artifact_notification(&path, "asm");
+            }
         }
 
         match config.emit_obj {

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -106,6 +106,7 @@ pub struct ModuleConfig {
     pub emit_asm: bool,
     pub emit_obj: EmitObj,
     pub emit_thin_lto: bool,
+    pub json_artifact_notifications: bool,
     pub bc_cmdline: String,
 
     // Miscellaneous flags. These are mostly copied from command-line
@@ -276,6 +277,7 @@ impl ModuleConfig {
             inline_threshold: sess.opts.cg.inline_threshold,
             emit_lifetime_markers: sess.emit_lifetime_markers(),
             llvm_plugins: if_regular!(sess.opts.unstable_opts.llvm_plugins.clone(), vec![]),
+            json_artifact_notifications: sess.opts.json_artifact_notifications,
         }
     }
 

src/doc/rustc/src/json.md

@@ -229,6 +229,8 @@ flag][option-emit] documentation.
        - "link": The generated crate as specified by the crate-type.
        - "dep-info": The `.d` file with dependency information in a Makefile-like syntax.
        - "metadata": The Rust `.rmeta` file containing metadata about the crate.
+       - "asm": The `.s` file with generated assembly
+       - "llvm_ir": The `.ll` file with generated textual LLVM IR
     */
     "emit": "link"
 }