11 commits

Author	SHA1	Message	Date
Eddie Hung	2c0be7aa5d	Rework ice40_dsp to map to SB_MAC16 earlier, and check before packing	2019-08-08 12:56:05 -07:00
Eddie Hung	07e50b9c25	Only pack registers if {A,B,P}REG = 0, do not pack $dffe	2019-08-08 10:51:19 -07:00
Eddie Hung	9ad11ea2cc	Fine tune ice40_dsp.pmg, add support for packing subsets of registers	2019-07-19 10:57:32 -07:00
Eddie Hung	802470746c	Check if RHS is empty first	2019-07-18 15:22:00 -07:00
Eddie Hung	08fe63c61e	Improve pattern matcher to match subsets of $dffe? cells	2019-07-18 14:08:18 -07:00
Eddie Hung	79d63479ea	Improve A/B reg packing	2019-07-18 13:30:35 -07:00
Eddie Hung	0727b2c902	Fix xilinx_dsp index cast	2019-07-18 13:18:04 -07:00
Eddie Hung	91629ee4b3	Pattern matcher to check pool of bits, not exactly	2019-07-17 12:45:25 -07:00
Eddie Hung	3f677fb0db	Signed extension	2019-07-16 15:54:07 -07:00
Eddie Hung	9616dbd125	Add support {A,B,P}REG packing	2019-07-16 14:06:32 -07:00
Eddie Hung	dd59375a66	Add xilinx_dsp for register packing	2019-07-15 14:46:31 -07:00