From: Cesar Strauss <cestrauss@gmail.com>
Date: Sat, 3 Apr 2021 20:12:30 +0000 (-0300)
Subject: Reminder for a possible hardware optimization
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0a9ebd800c9ce42cf6135f773eb072be00f33ee0;p=soc.git

Reminder for a possible hardware optimization
---

diff --git a/src/soc/simple/issuer.py b/src/soc/simple/issuer.py
index 5101ecb2..0bfbcd3c 100644
--- a/src/soc/simple/issuer.py
+++ b/src/soc/simple/issuer.py
@@ -607,6 +607,8 @@ class TestIssuerInternal(Elaboratable):
                         comb += skip_srcstep.eq(cur_srcstep + src_delta)
                         # shift-out all leading zeros from the mask
                         # plus the leading "one" bit
+                        # TODO count leading zeros and shift-out the zero
+                        #      bits, in the same step, in hardware
                         sync += self.srcmask.eq(self.srcmask >> (src_delta+1))
 
                         # same as above, but for dststep