diff options
| author | Clifford Wolf <clifford@clifford.at> | 2013-06-10 21:04:04 +0200 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2013-06-10 21:04:04 +0200 |
| commit | 7f3f25841e8aab9ebe06ddf096a520a66f6249fc (patch) | |
| tree | 3f0f8178de93f2f886ba9b361198ec41aa0dca2c | |
| parent | a5c30183b5fba4d7af4fb6c908cca5c5515e3089 (diff) | |
More sign-extension related fixes
| -rw-r--r-- | techlibs/stdcells.v | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/techlibs/stdcells.v b/techlibs/stdcells.v index 01cfb9d1..41e20214 100644 --- a/techlibs/stdcells.v +++ b/techlibs/stdcells.v @@ -123,8 +123,8 @@ input [B_WIDTH-1:0] B; output [Y_WIDTH-1:0] Y; wire [Y_WIDTH-1:0] A_buf, B_buf; -\$pos #(.A_SIGNED(A_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); -\$pos #(.A_SIGNED(B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); genvar i; generate @@ -154,8 +154,8 @@ input [B_WIDTH-1:0] B; output [Y_WIDTH-1:0] Y; wire [Y_WIDTH-1:0] A_buf, B_buf; -\$pos #(.A_SIGNED(A_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); -\$pos #(.A_SIGNED(B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); genvar i; generate @@ -185,8 +185,8 @@ input [B_WIDTH-1:0] B; output [Y_WIDTH-1:0] Y; wire [Y_WIDTH-1:0] A_buf, B_buf; -\$pos #(.A_SIGNED(A_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); -\$pos #(.A_SIGNED(B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); genvar i; generate @@ -216,8 +216,8 @@ input [B_WIDTH-1:0] B; output [Y_WIDTH-1:0] Y; wire [Y_WIDTH-1:0] A_buf, B_buf; -\$pos #(.A_SIGNED(A_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); -\$pos #(.A_SIGNED(B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); genvar i; generate @@ -980,14 +980,15 @@ input [A_WIDTH-1:0] A; input [B_WIDTH-1:0] B; output [Y_WIDTH-1:0] Y; -wire signed [Y_WIDTH:0] buffer_a = A_SIGNED ? $signed(A) : A; -wire signed [Y_WIDTH:0] buffer_b = B_SIGNED ? $signed(B) : B; +wire [Y_WIDTH-1:0] A_buf, B_buf; +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(Y_WIDTH)) A_conv (.A(A), .Y(A_buf)); +\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(Y_WIDTH)) B_conv (.A(B), .Y(B_buf)); \$arraymul #( .WIDTH(Y_WIDTH) ) arraymul ( - .A(buffer_a), - .B(buffer_b), + .A(A_buf), + .B(B_buf), .Y(Y) ); |