diff options
Diffstat (limited to 'passes/pmgen/xilinx_dsp_CREG.pmg')
| -rw-r--r-- | passes/pmgen/xilinx_dsp_CREG.pmg | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/passes/pmgen/xilinx_dsp_CREG.pmg b/passes/pmgen/xilinx_dsp_CREG.pmg index 3d911b478..b87a686a1 100644 --- a/passes/pmgen/xilinx_dsp_CREG.pmg +++ b/passes/pmgen/xilinx_dsp_CREG.pmg @@ -79,6 +79,11 @@ endcode // (attached to at most two $mux cells that implement clock-enable or // reset functionality, using the in_dffe subpattern) code argQ ffC ffCcemux ffCrstmux ffCcepol ffCrstpol sigC clock + // TODO: Any downside to allowing this? + // If this DSP implements an accumulator, do not attempt to match + if (sigC == sigP) + reject; + argQ = sigC; subpattern(in_dffe); if (dff) { |