Don't force RETURN_PLACE to stack

bjorn3 · bjorn3 · commit 40629999bcbf · 2019-08-28T15:29:10.000+02:00
Speeds up simple-raytracer by 7% (cc #684)
diff --git a/src/analyze.rs b/src/analyze.rs
@@ -15,8 +15,6 @@ pub fn analyze(fx: &FunctionCx<'_, '_, impl Backend>) -> HashMap<Local, Flags> {
         flag_map.insert(local, Flags::empty());
     }
 
-    not_ssa(&mut flag_map, RETURN_PLACE);
-
     for (local, local_decl) in fx.mir.local_decls.iter_enumerated() {
         if fx.clif_type(local_decl.ty).is_none() {
             not_ssa(&mut flag_map, local);

Original file line number	Diff line number	Diff line change
`@@ -15,8 +15,6 @@ pub fn analyze(fx: &FunctionCx<'_, '_, impl Backend>) -> HashMap<Local, Flags> {`
`15`	`15`	`flag_map.insert(local, Flags::empty());`
`16`	`16`	`}`
`17`	`17`
`18`		`- not_ssa(&mut flag_map, RETURN_PLACE);`
`19`		`-`
`20`	`18`	`for (local, local_decl) in fx.mir.local_decls.iter_enumerated() {`
`21`	`19`	`if fx.clif_type(local_decl.ty).is_none() {`
`22`	`20`	`not_ssa(&mut flag_map, local);`