Disable the self-profiler unless the -Z self-profile flag is set

wesleywiser · wesleywiser · commit b319715456c0 · 2018-11-22T12:56:15.000-05:00
Related to rust-lang#51648
diff --git a/src/librustc/session/mod.rs b/src/librustc/session/mod.rs
@@ -826,8 +826,10 @@ impl Session {
     }
 
     pub fn profiler<F: FnOnce(&mut SelfProfiler) -> ()>(&self, f: F) {
-        let mut profiler = self.self_profiling.borrow_mut();
-        f(&mut profiler);
+        if self.opts.debugging_opts.self_profile {
+            let mut profiler = self.self_profiling.borrow_mut();
+            f(&mut profiler);
+        }
     }
 
     pub fn print_profiler_results(&self) {

Original file line number	Diff line number	Diff line change
`@@ -826,8 +826,10 @@ impl Session {`
`826`	`826`	`}`
`827`	`827`
`828`	`828`	`pub fn profiler<F: FnOnce(&mut SelfProfiler) -> ()>(&self, f: F) {`
`829`		`- let mut profiler = self.self_profiling.borrow_mut();`
`830`		`- f(&mut profiler);`
	`829`	`+ if self.opts.debugging_opts.self_profile {`
	`830`	`+ let mut profiler = self.self_profiling.borrow_mut();`
	`831`	`+ f(&mut profiler);`
	`832`	`+ }`
`831`	`833`	`}`
`832`	`834`
`833`	`835`	`pub fn print_profiler_results(&self) {`