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Fixed shift ops with large right hand side

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This commit is contained in:
Clifford Wolf 2013-07-09 18:59:59 +02:00
parent e8da3ea7b6
commit 7daeee340a
3 changed files with 50 additions and 10 deletions
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12
techlibs/stdcells.v
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@ -446,7 +446,7 @@ generate
assign chain[WIDTH*(i+1) + WIDTH-1 : WIDTH*(i+1)] = result;
\$shift #(
.WIDTH(WIDTH),
.SHIFT(0 - (2 ** i))
.SHIFT(0 - (2 ** (i > 30 ? 30 : i)))
) sh (
.X(0),
.A(unshifted),
@ -499,7 +499,7 @@ generate
assign chain[WIDTH*(i+1) + WIDTH-1 : WIDTH*(i+1)] = result;
\$shift #(
.WIDTH(WIDTH),
.SHIFT(2 ** i)
.SHIFT(2 ** (i > 30 ? 30 : i))
) sh (
.X(0),
.A(unshifted),
@ -552,7 +552,7 @@ generate
assign chain[WIDTH*(i+1) + WIDTH-1 : WIDTH*(i+1)] = result;
\$shift #(
.WIDTH(WIDTH),
.SHIFT(0 - (2 ** i))
.SHIFT(0 - (2 ** (i > 30 ? 30 : i)))
) sh (
.X(0),
.A(unshifted),
@ -614,7 +614,7 @@ generate
assign chain[WIDTH*(i+1) + WIDTH-1 : WIDTH*(i+1)] = result;
\$shift #(
.WIDTH(WIDTH),
.SHIFT(2 ** i)
.SHIFT(2 ** (i > 30 ? 30 : i))
) sh (
.X(A_SIGNED && A[A_WIDTH-1]),
.A(unshifted),
@ -800,7 +800,7 @@ input [B_WIDTH-1:0] B;
output Y;
wire carry, carry_sign;
wire [WIDTH-1:0] A_buf, B_buf, Y_buf;
wire [WIDTH-1:0] A_buf, B_buf;
\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(WIDTH)) A_conv (.A(A), .Y(A_buf));
\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(WIDTH)) B_conv (.A(B), .Y(B_buf));
@ -825,7 +825,7 @@ input [B_WIDTH-1:0] B;
output Y;
wire carry, carry_sign;
wire [WIDTH-1:0] A_buf, B_buf, Y_buf;
wire [WIDTH-1:0] A_buf, B_buf;
\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(A_WIDTH), .Y_WIDTH(WIDTH)) A_conv (.A(A), .Y(A_buf));
\$pos #(.A_SIGNED(A_SIGNED && B_SIGNED), .A_WIDTH(B_WIDTH), .Y_WIDTH(WIDTH)) B_conv (.A(B), .Y(B_buf));