From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 21 Jul 2019 15:26:19 +0000 (+0100)
Subject: add an absolute count on the stages
X-Git-Tag: ls180-24jan2020~796
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c78dbc79c699c9b7cc5bce19d121632d38729b15;p=ieee754fpu.git

add an absolute count on the stages
---

diff --git a/src/ieee754/fpdiv/pipeline.py b/src/ieee754/fpdiv/pipeline.py
index 6fd5a45c..3473e4c6 100644
--- a/src/ieee754/fpdiv/pipeline.py
+++ b/src/ieee754/fpdiv/pipeline.py
@@ -84,6 +84,7 @@ class FPDIVBasePipe(ControlBase):
         pipechain = []
         n_stages = 6      # TODO (depends on width)
         n_comb_stages = 3  # TODO (depends on how many RS's we want)
+        stage_idx = 0
         # to which the answer: "as few as possible"
         # is required.  too many ReservationStations
         # means "big problems".
@@ -104,7 +105,9 @@ class FPDIVBasePipe(ControlBase):
             else:
                 kls = FPDivStagesIntermediate
 
-            pipechain.append(kls(self.pspec, n_comb_stages))
+            pipechain.append(kls(self.pspec, n_comb_stages, stage_idx))
+            stage_idx += n_comb_stages # increment so that each CalcStage
+                                       # gets a (correct) unique index
 
         # start and end: unpack/specialcases then normalisation/packing
         pipestart = FPDIVSpecialCasesDeNorm(self.pspec)