From 19ec4561ac716f727c9e0482be98deec897d5d8e Mon Sep 17 00:00:00 2001
From: Clo91eaf <Clo91eaf@qq.com>
Date: Sun, 13 Oct 2024 21:29:08 +0800
Subject: [PATCH] [ipemu] filter 64-bit width instructions in t1 emu coverage
 flow

---
 t1emu/src/TestBench.scala | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/t1emu/src/TestBench.scala b/t1emu/src/TestBench.scala
index 1896f6f8c..d30e6f5e0 100644
--- a/t1emu/src/TestBench.scala
+++ b/t1emu/src/TestBench.scala
@@ -285,7 +285,30 @@ class TestBench(generator: SerializableModuleGenerator[T1, T1Parameter])
       scoreboard.bits  := 0.U
     }
   }
-  generator.parameter.decoderParam.allInstructions.map { instruction: Instruction =>
+  // coverage
+  // unsupported 64-bit instructions for 32-bit xlen
+  val unsupportedInstF = Seq(
+    // format: off
+    "vfwadd.vf", "vfwadd.vv", "vfwadd.wf", "vfwadd.wv",
+    "vfwcvt.f.f.v", "vfwcvt.f.x.v", "vfwcvt.f.xu.v", "vfwcvt.rtz.x.f.v", "vfwcvt.rtz.xu.f.v", "vfwcvt.x.f.v", "vfwcvt.xu.f.v",
+    "vfwmacc.vf", "vfwmacc.vv", "vfwmsac.vf", "vfwmsac.vv",
+    "vfwmul.vf", "vfwmul.vv", "vfwnmacc.vf", "vfwnmacc.vv",
+    "vfwnmsac.vf", "vfwnmsac.vv", "vfwredosum.vs", "vfwredusum.vs",
+    "vfwsub.vf", "vfwsub.vv", "vfwsub.wf", "vfwsub.wv", 
+    // format: on
+  )
+  val unsupportedInst  = Seq(
+    // format: off
+    "vfncvt.f.f.w", "vfncvt.f.x.w", "vfncvt.f.xu.w", "vfncvt.rod.f.f.w", "vfncvt.rtz.x.f.w", "vfncvt.rtz.xu.f.w", "vfncvt.x.f.w", "vfncvt.xu.f.w",
+    "vfslide1up.vf", "vfslide1down.vf",
+    "vl1re64.v", "vl2re64.v", "vl4re64.v", "vl8re64.v", 
+    "vle64.v", "vle64ff.v", "vloxei64.v", "vlse64.v", "vluxei64.v",
+    "vmfle.vf", "vmfle.vv", "vse64.v", "vsext.vf8", "vsoxei64.v", "vsse64.v", "vsuxei64.v", "vzext.vf8"
+    // format: on
+  ) ++ unsupportedInstF
+  generator.parameter.decoderParam.allInstructions.filter { instruction: Instruction =>
+    !(unsupportedInst.contains(instruction.name) && generator.parameter.xlen == 32)
+  }.map { instruction: Instruction =>
     val issueMatch = Sequence.BoolSequence(issue.instruction === BitPat("b" + instruction.encoding.toString))
     CoverProperty(issueMatch, label = Some(s"t1_cover_issue_${instruction.name}"))
   }