From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sat, 15 Feb 2020 17:41:17 +0000 (+0000)
Subject: whoops shift width reduction not active
X-Git-Tag: ls180-24jan2020~148
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f2a575dc7eb06d638bd9990255bc419a1d3ae753;p=ieee754fpu.git

whoops shift width reduction not active
---

diff --git a/src/ieee754/part_shift/part_shift_dynamic.py b/src/ieee754/part_shift/part_shift_dynamic.py
index bfd8b244..45ba08ca 100644
--- a/src/ieee754/part_shift/part_shift_dynamic.py
+++ b/src/ieee754/part_shift/part_shift_dynamic.py
@@ -78,11 +78,11 @@ class PartialResult(Elaboratable):
         # trying to shift data by 64 bits if the result width
         # is only 8.
         shifter = Signal(shiftbits, reset_less=True)
-        with m.If(element > shiftbits):
-            comb += shifter.eq(shiftbits)
+        maxval = C(self.reswid, element.shape())
+        with m.If(element > maxval):
+            comb += shifter.eq(maxval)
         with m.Else():
             comb += shifter.eq(element)
-        comb += shifter.eq(element)
         comb += self.partial.eq(self.a_interval << shifter)
 
         return m