nak: impl HasRegFile for SSARef and &[SSAValue]

Reviewed-by: Mary Guillemard <mary@mary.zone>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37130>

src/nouveau/compiler/nak/ir.rs

@@ -236,6 +236,19 @@ pub trait HasRegFile {
     }
 }
 
+impl HasRegFile for &[SSAValue] {
+    fn file(&self) -> RegFile {
+        let comps = self.len();
+        let file = self[0].file();
+        for i in 1..comps {
+            if self[i].file() != file {
+                panic!("Illegal mix of RegFiles")
+            }
+        }
+        file
+    }
+}
+
 #[derive(Clone)]
 pub struct RegFileSet {
     bits: u8,

src/nouveau/compiler/nak/ssa_value.rs

@@ -204,49 +204,6 @@ impl SSARef {
         }
     }
 
-    /// Returns the register file for this SSA reference, assuming all SSA
-    /// values have the same register file.
-    pub fn file(&self) -> RegFile {
-        let comps = usize::from(self.comps());
-        let file = self[0].file();
-        for i in 1..comps {
-            if self[i].file() != file {
-                panic!("SSARef mixes RegFiles")
-            }
-        }
-        file
-    }
-
-    /// Returns true if this SSA reference is known to be uniform.
-    pub fn is_uniform(&self) -> bool {
-        for ssa in &self[..] {
-            if !ssa.is_uniform() {
-                return false;
-            }
-        }
-        true
-    }
-
-    pub fn is_gpr(&self) -> bool {
-        for ssa in &self[..] {
-            if !ssa.is_gpr() {
-                return false;
-            }
-        }
-        true
-    }
-
-    pub fn is_predicate(&self) -> bool {
-        if self[0].is_predicate() {
-            true
-        } else {
-            for ssa in &self[..] {
-                debug_assert!(!ssa.is_predicate());
-            }
-            false
-        }
-    }
-
     #[cold]
     #[inline]
     fn cold() {}
@@ -337,6 +294,12 @@ impl fmt::Display for SSARef {
     }
 }
 
+impl HasRegFile for SSARef {
+    fn file(&self) -> RegFile {
+        (&self[..]).file()
+    }
+}
+
 #[test]
 fn test_ssa_ref_round_trip() {
     for len in 1..16 {