nak: Add a B32 source type

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26535>

src/nouveau/compiler/nak_ir.rs

@@ -993,6 +993,7 @@ pub enum SrcType {
     F32,
     F64,
     I32,
+    B32,
     Pred,
     Bar,
 }
@@ -1159,6 +1160,14 @@ impl Src {
 
                 self.src_ref.is_alu()
             }
+            SrcType::B32 => {
+                match self.src_mod {
+                    SrcMod::None | SrcMod::BNot => (),
+                    _ => return false,
+                }
+
+                self.src_ref.is_alu()
+            }
             SrcType::Pred => {
                 match self.src_mod {
                     SrcMod::None | SrcMod::BNot => (),

src/nouveau/compiler/nak_legalize.rs

@@ -299,7 +299,8 @@ fn legalize_instr(
                     SrcType::ALU
                     | SrcType::F32
                     | SrcType::F64
-                    | SrcType::I32 => {
+                    | SrcType::I32
+                    | SrcType::B32 => {
                         panic!("ALU srcs must be legalized explicitly");
                     }
                     SrcType::Pred => {

src/nouveau/compiler/nak_opt_copy_prop.rs

@@ -294,7 +294,11 @@ impl CopyPropPass {
             SrcType::GPR => {
                 self.prop_to_gpr_src(src);
             }
-            SrcType::ALU | SrcType::F32 | SrcType::I32 | SrcType::Pred => {
+            SrcType::ALU
+            | SrcType::F32
+            | SrcType::I32
+            | SrcType::B32
+            | SrcType::Pred => {
                 self.prop_to_scalar_src(src_type, src);
             }
             SrcType::F64 => {