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| author | Eddie Hung <eddie@fpgeh.com> | 2019-06-24 12:18:17 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-06-24 12:18:17 -0700 |
| commit | 2b4501503d05beaecc0f995d0681ff43e2c6fba4 (patch) | |
| tree | 8d5d97ffc61ac9dca506a7d963cde63650f66749 /techlibs/xilinx/cells_map.v | |
| parent | aa1eeda567d09e2d2ffd40cd008d0166d2910273 (diff) | |
| download | yosys-2b4501503d05beaecc0f995d0681ff43e2c6fba4.tar.gz yosys-2b4501503d05beaecc0f995d0681ff43e2c6fba4.tar.bz2 yosys-2b4501503d05beaecc0f995d0681ff43e2c6fba4.zip | |
Fix mux techmapping
Diffstat (limited to 'techlibs/xilinx/cells_map.v')
| -rw-r--r-- | techlibs/xilinx/cells_map.v | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/techlibs/xilinx/cells_map.v b/techlibs/xilinx/cells_map.v index 2eb84ce04..85f174d3d 100644 --- a/techlibs/xilinx/cells_map.v +++ b/techlibs/xilinx/cells_map.v @@ -226,35 +226,36 @@ module \$__XILINX_SHIFTX (A, B, Y); localparam a_width0 = 2 ** 2; localparam num_mux8 = A_WIDTH / a_width0; localparam a_widthN = A_WIDTH - num_mux8*a_width0; - wire [4-1:0] T; - for (i = 0; i < num_mux8; i++) + wire [a_width0-1:0] T; + for (i = 0; i < a_width0; i++) if (i < num_mux8) \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_width0), .B_WIDTH(2), .Y_WIDTH(Y_WIDTH)) fpga_mux (.A(A[i*a_width0+:a_width0]), .B(B[2-1:0]), .Y(T[i])); - if (a_widthN > 0) begin - if (a_widthN > 1) - \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_mux_last (.A(A[A_WIDTH-1:num_mux8*a_width0]), .B(B[$clog2(a_widthN)-1:0]), .Y(T[num_mux8])); + else if (i == num_mux8 && a_widthN > 0) begin + if (a_widthN > 1) + \$shiftx #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_mux_last (.A(A[A_WIDTH-1-:a_widthN]), .B(B[$clog2(a_widthN)-1:0]), .Y(T[i])); + else + assign T[i] = A[A_WIDTH-1]; + end else - assign T[num_mux8] = A[A_WIDTH-1]; - end - else - assign T[num_mux8] = 1'bx; + assign T[i] = 1'bx; \$__XILINX_MUXF78 fpga_hard_mux (.I0(T[0]), .I1(T[1]), .I2(T[2]), .I3(T[3]), .S0(B[2]), .S1(B[3]), .O(Y)); end else begin localparam a_width0 = 2 ** 4; localparam num_mux16 = A_WIDTH / a_width0; localparam a_widthN = A_WIDTH - num_mux16*a_width0; - wire [num_mux16-1:0] T; - for (i = 0; i < num_mux16; i++) - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_width0), .B_WIDTH(4), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux (.A(A[i*a_width0+:a_width0]), .B(B[4-1:0]), .Y(T[i])); - if (a_widthN > 0) begin - if (a_widthN > 1) - \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux_last (.A(A[A_WIDTH-1:num_mux16*a_width0]), .B(B[$clog2(a_widthN)-1:0]), .Y(T[num_mux16])); + wire [a_width0-1:0] T; + for (i = 0; i < a_width0; i++) + if (i < num_mux16) + \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_width0), .B_WIDTH(4), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux (.A(A[i*a_width0+:a_width0]), .B(B[4-1:0]), .Y(T[i])); + else if (i == num_mux16 && a_widthN > 0) begin + if (a_widthN > 1) + \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(a_widthN), .B_WIDTH($clog2(a_widthN)), .Y_WIDTH(Y_WIDTH)) fpga_soft_mux_last (.A(A[A_WIDTH-1-:a_widthN]), .B(B[$clog2(a_widthN)-1:0]), .Y(T[i])); + else + assign T[i] = A[A_WIDTH-1]; + end else - assign T[num_mux16] = A[A_WIDTH-1]; - end - else - assign T[num_mux16] = 1'bx; + assign T[i] = 1'bx; \$__XILINX_SHIFTX #(.A_SIGNED(A_SIGNED), .B_SIGNED(B_SIGNED), .A_WIDTH(2**(B_WIDTH-4)), .B_WIDTH(B_WIDTH-4), .Y_WIDTH(Y_WIDTH)) _TECHMAP_REPLACE_ (.A(T), .B(B[B_WIDTH-1:4]), .Y(Y)); end endgenerate |