From 595a8f032f1e9db385959f92a4a414a40de291fd Mon Sep 17 00:00:00 2001 From: Eddie Hung Date: Fri, 19 Jul 2019 15:50:13 -0700 Subject: [PATCH] Do not do sign extension in techmap; let packer do it --- techlibs/common/mul2dsp.v | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/techlibs/common/mul2dsp.v b/techlibs/common/mul2dsp.v index 5444d842a..70c2c42c6 100644 --- a/techlibs/common/mul2dsp.v +++ b/techlibs/common/mul2dsp.v @@ -196,24 +196,15 @@ module \$__mul (A, B, Y); assign Y = partial_sum[n-1]; end else begin - if (A_SIGNED) - wire signed [`DSP_A_MAXWIDTH-1:0] Aext = $signed(A); - else - wire [`DSP_A_MAXWIDTH-1:0] Aext = A; - if (B_SIGNED) - wire signed [`DSP_B_MAXWIDTH-1:0] Bext = $signed(B); - else - wire [`DSP_B_MAXWIDTH-1:0] Bext = B; - `DSP_NAME #( .A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), - .A_WIDTH(`DSP_A_MAXWIDTH), - .B_WIDTH(`DSP_B_MAXWIDTH), - .Y_WIDTH(`MIN(Y_WIDTH,`DSP_A_MAXWIDTH+`DSP_B_MAXWIDTH)), + .A_WIDTH(A_WIDTH), + .B_WIDTH(B_WIDTH), + .Y_WIDTH(`MIN(Y_WIDTH,A_WIDTH+B_WIDTH)), ) _TECHMAP_REPLACE_ ( - .A(Aext), - .B(Bext), + .A(A), + .B(B), .Y(Y) ); end -- 2.30.2