Cranelift: implement redundant fill removal on tree-shaped CFG regions. Mozilla bug 1570584. (#906)

2019-08-25 19:37:34 +02:00
parent cc57e84cbd
commit b8fb52446c
19 changed files with 1262 additions and 24 deletions
--- a/cranelift/codegen/src/write.rs
+++ b/cranelift/codegen/src/write.rs
@@ -664,6 +664,14 @@ pub fn write_operands(
                write!(w, " %{} -> %{}", src, dst)
            }
        }
+        CopyToSsa { src, .. } => {
+            if let Some(isa) = isa {
+                let regs = isa.register_info();
+                write!(w, " {}", regs.display_regunit(src))
+            } else {
+                write!(w, " %{}", src)
+            }
+        }
        RegSpill { arg, src, dst, .. } => {
            if let Some(isa) = isa {
                let regs = isa.register_info();