Merge remote-tracking branch 'origin/master' into xc7dsp

diff --cc CHANGELOG
index 50c611b8d247eb699c9c2323df4ff814d470572d,890fad9781318101207cea1fa3cf2fd8ed221552..8d7dd3e191f62c3fb08cc4c7f7a92f83009741b6
--- 1/CHANGELOG
--- 2/CHANGELOG
+++ b/CHANGELOG
@@@ -39,11 -39,7 +39,12 @@@ Yosys 0.9 .. Yosys 0.9-de
      - Added "xilinx_srl" for Xilinx shift register extraction
      - Removed "shregmap -tech xilinx" (superseded by "xilinx_srl")
      - Added "_TECHMAP_WIREINIT_*_" attribute and "_TECHMAP_REMOVEINIT_*_" wire for "techmap" pass
+     - Added "-match-init" option to "dff2dffs" pass
 +    - Added +/mul2dsp.v for decomposing wide multipliers to custom-sized ones
 +    - Added "xilinx_dsp" for Xilinx DSP packing
 +    - "synth_xilinx" to now infer DSP blocks (-nodsp to disable)
 +    - "synth_ecp5" to now infer DSP blocks (-nodsp to disable, experimental)
 +    - "synth_ice40 -dsp" to infer DSP blocks
  
  Yosys 0.8 .. Yosys 0.9
  ----------------------