From f505aba1acd394c327a536fdea469f809a574c9b Mon Sep 17 00:00:00 2001
From: Andrew Waterman <andrew@sifive.com>
Date: Tue, 7 Mar 2017 17:25:19 -0800
Subject: [PATCH] Use sNaN value for flw, like other single-precision ops

---
 src/main/scala/tile/FPU.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/tile/FPU.scala b/src/main/scala/tile/FPU.scala
index 341f5d22..ca5e1950 100644
--- a/src/main/scala/tile/FPU.scala
+++ b/src/main/scala/tile/FPU.scala
@@ -536,7 +536,7 @@ class FPU(cfg: FPUParams)(implicit p: Parameters) extends FPUModule()(p) {
     case 32 => rec_s
     case 64 =>
       val rec_d = hardfloat.recFNFromFN(dExpWidth, dSigWidth, load_wb_data)
-      Mux(load_wb_single, Cat(UInt((BigInt(1) << (fLen - 32)) - 1), rec_s), rec_d)
+      Mux(load_wb_single, rec_s | CanonicalNaN.signaling(maxExpWidth, maxSigWidth), rec_d)
   }
 
   // regfile