Verilator 3.922 2018-03-17 released

[wsnyder]

Verilator 3.922 2018-03-17 released

Major:

• Support IEEE 1800-2017 as default language.

Notable:

• Support trig functions ($sin() etc). (Trig functions verilator#1281) [Patrick Stewart]
• Support calling system functions as tasks. (scr1 test suite: built-in system functions only work when the return value is assigned verilator#1285) [Joel Holdsworth]
• Support assert properties. (Support for SystemVerilog assertions verilator#785) (scr1 test suite: assert properties don't work verilator#1290) [John Coiner, et al]
• Support $writememh. [John Coiner]
• Add --no-debug-leak to reduce memory use under debug. [John Coiner]

Other:

• Fix severe runtime performance bug in certain foreach loops. [John Coiner]
• On convergence errors, show activity. [John Coiner]
• Fix GCC 8.0 issues. (verilator/verilator#1273)
• Fix pullup/pulldowns on bit selects. (Pullup / Pulldown on arrays causes internal crash verilator#1274) [Rob Stoddard]
• Fix verilator_coverage --annotate-min. (Unsupported --annotate-min command line argument for verilator_coverage tool verilator#1284) [Tymoteusz Blazejczyk]
• Fix quoting of quoted arguments. [John Coiner]