From 37115c10e0ac78d17483cb16ee87f783b61a4252 Mon Sep 17 00:00:00 2001
From: bjorn3 <bjorn3@users.noreply.github.com>
Date: Sat, 3 Jul 2021 14:31:45 +0200
Subject: [PATCH] Implement Display for settings::Value

---
 cranelift/codegen/src/settings.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/cranelift/codegen/src/settings.rs b/cranelift/codegen/src/settings.rs
index 09db7f55e5..1842e543fe 100644
--- a/cranelift/codegen/src/settings.rs
+++ b/cranelift/codegen/src/settings.rs
@@ -115,6 +115,24 @@ impl Value {
     }
 }
 
+impl fmt::Display for Value {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        if let Some(enum_variant) = self.as_enum() {
+            write!(f, "{}={}", self.name, enum_variant)
+        } else if let Some(num) = self.as_num() {
+            write!(f, "{}={}", self.name, num)
+        } else if let Some(b) = self.as_bool() {
+            if b {
+                write!(f, "{}=1", self.name)
+            } else {
+                write!(f, "{}=0", self.name)
+            }
+        } else {
+            unreachable!()
+        }
+    }
+}
+
 /// Collect settings values based on a template.
 #[derive(Clone, Hash)]
 pub struct Builder {