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* ice40_wrapcarry -unwrap to preserve 'src' attributeEddie Hung2019-12-091-1/+9
* -unwrap to create $lut not SB_LUT4 for opt_lutEddie Hung2019-12-091-7/+5
* Sensitive to direct inst of $__ICE40_CARRY_WRAPPER; recreate SB_LUT4Eddie Hung2019-12-091-7/+11
* ice40_wrapcarry to really preserve attributes via -unwrap optionEddie Hung2019-12-091-17/+55
* Drop keep=0 attributes on SB_CARRYEddie Hung2019-12-061-0/+8
* Merge SB_CARRY+SB_LUT4's attributes when creating $__ICE40_CARRY_WRAPPEREddie Hung2019-12-051-0/+1
* ice40_wrapcarry to preserve SB_CARRY's attributesEddie Hung2019-12-031-0/+2
* Revert "Merge pull request #1280 from YosysHQ/revert-1266-eddie/ice40_full_ad...Eddie Hung2019-08-121-0/+90
* Revert "Wrap SB_LUT+SB_CARRY into $__ICE40_CARRY_WRAPPER"David Shah2019-08-101-90/+0
* Add ice40_wrapcarry pass, rename $__ICE40_FULL_ADDER -> CARRY_WRAPPEREddie Hung2019-08-071-0/+90