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-rw-r--r--passes/techmap/shregmap.cc6
1 files changed, 0 insertions, 6 deletions
diff --git a/passes/techmap/shregmap.cc b/passes/techmap/shregmap.cc
index bd537e7c2..a060b55df 100644
--- a/passes/techmap/shregmap.cc
+++ b/passes/techmap/shregmap.cc
@@ -165,12 +165,6 @@ struct ShregmapTechXilinx7 : ShregmapTech
}
log_assert(shiftx);
- // Cannot implement variable-length shift registers
- // greater than 128 since Q31 cannot be output onto
- // fabric
- if (GetSize(taps) > 128)
- return false;
-
// Only map if $shiftx exclusively covers the shift register
if (GetSize(taps) != shiftx->getParam("\\A_WIDTH").as_int())
return false;