From f9275e1092232fcb8ec117fc4acca990f57cba15 Mon Sep 17 00:00:00 2001
From: Miguel Ojeda <ojeda@kernel.org>
Date: Sun, 17 Jan 2021 15:06:47 +0100
Subject: Skip linking if it is not required

This allows to use `--emit=metadata,obj` and other metadata
+ non-link combinations.

Fixes #81117.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 compiler/rustc_session/src/config.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'compiler/rustc_session/src')

diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 0cafdec1495..49833601c9e 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -403,6 +403,20 @@ impl OutputTypes {
             OutputType::Metadata | OutputType::DepInfo => false,
         })
     }
+
+    // Returns `true` if any of the output types require linking.
+    pub fn should_link(&self) -> bool {
+        self.0.keys().any(|k| match *k {
+            OutputType::Bitcode
+            | OutputType::Assembly
+            | OutputType::LlvmAssembly
+            | OutputType::Mir
+            | OutputType::Metadata
+            | OutputType::Object
+            | OutputType::DepInfo => false,
+            OutputType::Exe => true,
+        })
+    }
 }
 
 /// Use tree-based collections to cheaply get a deterministic `Hash` implementation.
-- 
cgit 1.4.1-3-g733a5