From: Eddie Hung <eddie@fpgeh.com>
Date: Thu, 26 Sep 2019 00:26:47 +0000 (-0700)
Subject: Remove unnecessary check for A_SIGNED != B_SIGNED; be more explicit
X-Git-Tag: working-ls180~1039^2~18
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=34aa3532fb1df2300da83df4071b46da69e3723c;p=yosys.git

Remove unnecessary check for A_SIGNED != B_SIGNED; be more explicit
---

diff --git a/techlibs/common/mul2dsp.v b/techlibs/common/mul2dsp.v
index 3ca69b7b1..9932e288f 100644
--- a/techlibs/common/mul2dsp.v
+++ b/techlibs/common/mul2dsp.v
@@ -77,10 +77,8 @@ module _80_mul (A, B, Y);
 	else if (Y_WIDTH < `DSP_Y_MINWIDTH)
 		wire _TECHMAP_FAIL_ = 1;
 `endif
-	else if (_TECHMAP_CELLTYPE_ == "$mul" && A_SIGNED != B_SIGNED)
-		wire _TECHMAP_FAIL_ = 1;
 `ifdef DSP_SIGNEDONLY
-	else if (_TECHMAP_CELLTYPE_ == "$mul" && !A_SIGNED)
+	else if (_TECHMAP_CELLTYPE_ == "$mul" && !A_SIGNED && !B_SIGNED)
 		\$mul #(
 			.A_SIGNED(1),
 			.B_SIGNED(1),