Add CopySpan{Asc,Des} operator variants + fix decode bug (#1677)

* add CopySpan{Asc,Des} operators

* fix bug in Decode for CmpBranchOp

Author: Robbepop

crates/ir2/build/ident.rs

@@ -157,7 +157,8 @@ define_ident!(
     Copy: copy,
     Copy32: copy32,
     Copy64: copy64,
-    CopySpan: copy_span,
+    CopySpanAsc: copy_span_asc,
+    CopySpanDes: copy_span_des,
 
     Table: table,
     Memory: memory,

crates/ir2/build/isa.rs

@@ -459,7 +459,15 @@ fn add_copy_ops(isa: &mut Isa) {
             ],
         )),
         Op::from(GenericOp::new(
-            Ident::CopySpan,
+            Ident::CopySpanAsc,
+            [
+                Field::new(Ident::Results, FieldTy::SlotSpan),
+                Field::new(Ident::Values, FieldTy::SlotSpan),
+                Field::new(Ident::Len, FieldTy::U16),
+            ],
+        )),
+        Op::from(GenericOp::new(
+            Ident::CopySpanDes,
             [
                 Field::new(Ident::Results, FieldTy::SlotSpan),
                 Field::new(Ident::Values, FieldTy::SlotSpan),

crates/ir2/build/mod.rs

@@ -122,7 +122,7 @@ fn generate_encode_rs(config: &Config, isa: &Isa, contents: &mut String) -> Resu
 fn generate_decode_rs(config: &Config, isa: &Isa, contents: &mut String) -> Result<(), Error> {
     let expected_size = match config.simd {
         true => 55_000,
-        false => 35_000,
+        false => 36_000,
     };
     write_to_buffer(contents, expected_size, |buffer| {
         write!(buffer, "{}", DisplayDecode::new(isa, Indent::default()))

crates/ir2/src/decode/op.rs

@@ -87,9 +87,9 @@ where
 {
     fn decode<D: Decoder>(decoder: &mut D) -> Result<Self, DecodeError> {
         Ok(Self {
+            offset: Decode::decode(decoder)?,
             lhs: Decode::decode(decoder)?,
             rhs: Decode::decode(decoder)?,
-            offset: Decode::decode(decoder)?,
         })
     }
 }