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/reader/src/parser.rs
+++ b/cranelift/reader/src/parser.rs
@@ -2498,6 +2498,10 @@ impl<'a> Parser<'a> {
                let dst = self.match_regunit(ctx.unique_isa)?;
                InstructionData::CopySpecial { opcode, src, dst }
            }
+            InstructionFormat::CopyToSsa => InstructionData::CopyToSsa {
+                opcode,
+                src: self.match_regunit(ctx.unique_isa)?,
+            },
            InstructionFormat::RegSpill => {
                let arg = self.match_value("expected SSA value operand")?;
                self.match_token(Token::Comma, "expected ',' between operands")?;