[cases] rvv_bench built from upstream source

difftest/online_dpi/src/dpi.rs

@@ -47,7 +47,7 @@ unsafe fn load_from_payload<'a>(
   let data = &byte_vec[strb_width_in_byte..];
 
   let strb_width_in_bit = std::cmp::min(8, data_width_in_byte);
-  let mut masks: Vec<bool> = strobe
+  let masks: Vec<bool> = strobe
     .into_iter()
     .flat_map(|strb| {
       let mask: Vec<bool> = (0..strb_width_in_bit).map(|i| (strb & (1 << i)) != 0).collect();

tests/default.nix

@@ -45,6 +45,11 @@ let
         builtins.fromJSON (lib.fileContents extraFeatures)
       else [ ];
 
+    filterByFeatures = caseName: caseDrv:
+      assert lib.assertMsg (caseDrv ? featuresRequired) "${caseName} doesn't have features specified";
+      # Test the case required extensions is supported by rtl design
+      isSubsetOf currentFeatures caseDrv.featuresRequired;
+
     findAndBuild = dir: build:
       lib.recurseIntoAttrs (lib.pipe (builtins.readDir dir) [
         # filter out all non-directory entrires and underscore-prefixed directories
@@ -60,10 +65,7 @@ let
               inherit caseName sourcePath;
             })
         )
-        (lib.filterAttrs (caseName: caseDrv:
-          assert lib.assertMsg (caseDrv ? featuresRequired) "${caseName} doesn't have features specified";
-          # Test the case required extensions is supported by rtl design
-          isSubsetOf currentFeatures caseDrv.featuresRequired))
+        (lib.filterAttrs casesSelf.filterByFeatures)
       ]);
     t1main = ./t1_main.S;
     linkerScript = ./t1.ld;