diff options
Diffstat (limited to 'CHANGELOG')
| -rw-r--r-- | CHANGELOG | 118 |
1 files changed, 111 insertions, 7 deletions
@@ -3,20 +3,124 @@ List of major changes and improvements between releases ======================================================= -Yosys 0.8 .. Yosys 0.8-dev +Yosys 0.8 .. Yosys 0.9 -------------------------- * Various - - Added $changed support to read_verilog + - Many bugfixes and small improvements + - Added support for SystemVerilog interfaces and modports - Added "write_edif -attrprop" - - Added "ice40_unlut" pass - Added "opt_lut" pass - - Added "synth_ice40 -relut" - - Added "synth_ice40 -noabc" - Added "gate2lut.v" techmap rule - Added "rename -src" - Added "equiv_opt" pass + - Added "flowmap" LUT mapping pass + - Added "rename -wire" to rename cells based on the wires they drive + - Added "bugpoint" for creating minimised testcases + - Added "write_edif -gndvccy" + - "write_verilog" to escape Verilog keywords + - Fixed sign handling of real constants + - "write_verilog" to write initial statement for initial flop state + - Added pmgen pattern matcher generator + - Fixed opt_rmdff handling of $_DFFSR_???_ and $_DLATCHSR_???_ + - Added "setundef -params" to replace undefined cell parameters + - Renamed "yosys -D" to "yosys -U", added "yosys -D" to set Verilog defines + - Fixed handling of defparam when default_nettype is none + - Fixed "wreduce" flipflop handling + - Fixed FIRRTL to Verilog process instance subfield assignment + - Added "write_verilog -siminit" + - Several fixes and improvements for mem2reg memories + - Fixed handling of task output ports in clocked always blocks + - Improved handling of and-with-1 and or-with-0 in "opt_expr" + - Added "read_aiger" frontend + - Added "mutate" pass + - Added "hdlname" attribute + - Added "rename -output" + - Added "read_ilang -lib" + - Improved "proc" full_case detection and handling + - Added "whitebox" and "lib_whitebox" attributes + - Added "read_verilog -nowb", "flatten -wb" and "wbflip" + - Added Python bindings and support for Python plug-ins + - Added "pmux2shiftx" + - Added log_debug framework for reduced default verbosity + - Improved "opt_expr" and "opt_clean" handling of (partially) undriven and/or unused wires + - Added "peepopt" peephole optimisation pass using pmgen + - Added approximate support for SystemVerilog "var" keyword + - Added parsing of "specify" blocks into $specrule and $specify[23] + - Added support for attributes on parameters and localparams + - Added support for parsing attributes on port connections + - Added "wreduce -keepdc" + - Added support for optimising $dffe and $_DFFE_* cells in "opt_rmdff" + - Added Verilog wand/wor wire type support + - Added support for elaboration system tasks + - Added "muxcover -mux{4,8,16}=<cost>" + - Added "muxcover -dmux=<cost>" + - Added "muxcover -nopartial" + - Added "muxpack" pass + - Added "pmux2shiftx -norange" + - Added support for "~" in filename parsing + - Added "read_verilog -pwires" feature to turn parameters into wires + - Fixed sign extension of unsized constants with 'bx and 'bz MSB + - Fixed genvar to be a signed type + - Added support for attributes on case rules + - Added "upto" and "offset" to JSON frontend and backend + - Several liberty file parser improvements + - Fixed handling of more complex BRAM patterns + - Add "write_aiger -I -O -B" + + * Formal Verification + - Added $changed support to read_verilog + - Added "read_verilog -noassert -noassume -assert-assumes" + - Added btor ops for $mul, $div, $mod and $concat + - Added yosys-smtbmc support for btor witnesses + - Added "supercover" pass + - Fixed $global_clock handling vs autowire + - Added $dffsr support to "async2sync" + - Added "fmcombine" pass + - Added memory init support in "write_btor" + - Added "cutpoint" pass + - Changed "ne" to "neq" in btor2 output + - Added support for SVA "final" keyword + - Added "fmcombine -initeq -anyeq" + - Added timescale and generated-by header to yosys-smtbmc vcd output + - Improved BTOR2 handling of undriven wires + * Verific support + - Enabled Verific flags vhdl_support_variable_slice and veri_elaborate_top_level_modules_having_interface_ports + - Improved support for asymmetric memories + - Added "verific -chparam" + - Fixed "verific -extnets" for more complex situations + - Added "read -verific" and "read -noverific" + - Added "hierarchy -chparam" + + * New back-ends + - Added initial Anlogic support + - Added initial SmartFusion2 and IGLOO2 support + + * ECP5 support + - Added "synth_ecp5 -nowidelut" + - Added BRAM inference support to "synth_ecp5" + - Added support for transforming Diamond IO and flipflop primitives + + * iCE40 support + - Added "ice40_unlut" pass + - Added "synth_ice40 -relut" + - Added "synth_ice40 -noabc" + - Added "synth_ice40 -dffe_min_ce_use" + - Added DSP inference support using pmgen + - Added support for initialising BRAM primitives from a file + - Added iCE40 Ultra RGB LED driver cells + + * Xilinx support + - Use "write_edif -pvector bra" for Xilinx EDIF files + - Fixes for VPR place and route support with "synth_xilinx" + - Added more cell simulation models + - Added "synth_xilinx -family" + - Added "stat -tech xilinx" to estimate logic cell usage + - Added "synth_xilinx -nocarry" + - Added "synth_xilinx -nowidelut" + - "synth_xilinx" to now infer hard shift registers (-nosrl to disable) + - Added support for mapping RAM32X1D Yosys 0.7 .. Yosys 0.8 ---------------------- @@ -29,7 +133,7 @@ Yosys 0.7 .. Yosys 0.8 - Added "write_verilog -decimal" - Added "scc -set_attr" - Added "verilog_defines" command - - Remeber defines from one read_verilog to next + - Remember defines from one read_verilog to next - Added support for hierarchical defparam - Added FIRRTL back-end - Improved ABC default scripts @@ -38,7 +142,7 @@ Yosys 0.7 .. Yosys 0.8 - Added Verilog $rtoi and $itor support - Added "check -initdrv" - Added "read_blif -wideports" - - Added support for systemVerilog "++" and "--" operators + - Added support for SystemVerilog "++" and "--" operators - Added support for SystemVerilog unique, unique0, and priority case - Added "write_edif" options for edif "flavors" - Added support for resetall compiler directive |