Spill live-ins and EBB arguments if there are too many.

2017-06-29 14:07:19 -07:00
parent 8c84e2b2aa
commit 3fbcdb4ea6
3 changed files with 67 additions and 2 deletions
--- a/lib/cretonne/src/regalloc/pressure.rs
+++ b/lib/cretonne/src/regalloc/pressure.rs
@@ -224,6 +224,14 @@ impl Pressure {
            e.transient_count = 0;
        }
    }
+
+    /// Preserve the transient counts by transferring them to the base counts.
+    pub fn preserve_transient(&mut self) {
+        for e in &mut self.toprc {
+            e.base_count += e.transient_count;
+            e.transient_count = 0;
+        }
+    }
 }

 impl fmt::Display for Pressure {