Timequest Report Metastability

Timequest seems to ignore all synchronization chains except those contained in a megafunction DCFIFO. For example with the following clock definitions:

create_clock -period "30.000 ns" -name {PCI_CLOCK} [get_ports {clk}]

create_clock -period "10.172 ns" -name {PCLK1_PHY} [get_ports {F1_PCLK}]

set_clock_groups -asynchronous -group { PCI_CLOCK } -group {PCLK1_PHY}

instances of the code shown below do not show up in the Metastability Report. Does anyone know what might be causing this?

Thanks,

Edwin.

module signal_sync(

input wire clk1,

input wire clk2,

input wire in,

output wire out,

input wire rst1,

input wire rst2

);

reg in_reg;

reg [1:0] sync;

always @(posedge clk1 or posedge rst1) // Latch input

begin

if (rst1)

in_reg <= 1'b0;

else

in_reg <= in;

end

always @(posedge clk2 or posedge rst2) // Sync into the clk2 domain

begin

if (rst2)

sync <= 2'b0;

else

sync <= {sync[0], in_reg};

end

assign out = sync[1]; // Generates the output pulse

endmodule