From b94db546645e624b752203a4c4d2395dc84dff0c Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddieh@ece.ubc.ca>
Date: Mon, 18 Mar 2019 13:35:54 -0700
Subject: [PATCH] shiftx NULL pointer check
---
passes/techmap/shregmap.cc | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/passes/techmap/shregmap.cc b/passes/techmap/shregmap.cc
index 179a331fd..f3153b400 100644
--- a/passes/techmap/shregmap.cc
+++ b/passes/techmap/shregmap.cc
@@ -165,15 +165,17 @@ struct ShregmapTechXilinx7 : ShregmapTech
}
}
- // Cannot implement variable-length shift registers
- // greater than 128 since Q31 cannot be output onto
- // fabric
- if (shiftx && GetSize(taps) > 128)
- return false;
+ if (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;
+ // Only map if $shiftx exclusively covers the shift register
+ if (GetSize(taps) != shiftx->getParam("\\A_WIDTH").as_int())
+ return false;
+ }
return true;
}