mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-10-24 08:24:35 +00:00
Code Activity
yosys/tests/opt
History
whitequark bf8db55ef3 opt_expr: improve simplification of comparisons with large constants. 
The idea behind this simplification is that a N-bit signal X being
compared with an M-bit constant where M>N and the constant has Nth
or higher bit set, it either always succeeds or always fails.

However, the existing implementation only worked with one-hot signals
for some reason. It also printed incorrect messages.

This commit adjusts the simplification to have as much power as
possible, and fixes other bugs.
2019-01-02 15:45:28 +00:00
..
.gitignore opt_lut: new pass, to combine LUTs for tighter packing. 2018-12-05 16:30:37 +00:00
opt_expr_cmp.v opt_expr: improve simplification of comparisons with large constants. 2019-01-02 15:45:28 +00:00
opt_expr_cmp.ys opt_expr: simplify any unsigned comparisons with all-0 and all-1. 2019-01-02 02:45:49 +00:00
opt_lut.v opt_lut: new pass, to combine LUTs for tighter packing. 2018-12-05 16:30:37 +00:00
opt_lut.ys equiv_opt: pass -D EQUIV when techmapping. 2018-12-07 17:20:34 +00:00
opt_lut_elim.il opt_lut: eliminate LUTs evaluating to constants or inputs. 2018-12-31 23:55:40 +00:00
opt_lut_elim.ys opt_lut: eliminate LUTs evaluating to constants or inputs. 2018-12-31 23:55:40 +00:00
opt_lut_port.il opt_lut: leave intact LUTs with cascade feeding module outputs. 2018-12-07 17:13:52 +00:00
opt_lut_port.ys opt_lut: eliminate LUTs evaluating to constants or inputs. 2018-12-31 23:55:40 +00:00
run-test.sh opt_lut: new pass, to combine LUTs for tighter packing. 2018-12-05 16:30:37 +00:00