mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-04-13 04:28:18 +00:00
Code Activity

Elaborate muxpack doc

Browse source
This commit is contained in:
Eddie Hung 2019-06-10 10:32:19 -07:00
parent 1dd7e23a20
commit 5b999ae68d
1 changed files with 6 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
passes/opt/muxpack.cc
View file

@ -302,8 +302,12 @@ struct MuxpackPass : public Pass {
log(" muxpack [selection]\n"); log(" muxpack [selection]\n");
log("\n"); log("\n");
log("This pass converts cascaded chains of $pmux cells (e.g. those create from case\n"); log("This pass converts cascaded chains of $pmux cells (e.g. those create from case\n");
log("constructs) and $mux cells (e.g. those created by if-else constructs) into \n"); log("constructs) and $mux cells (e.g. those created by if-else constructs) into\n");
log("into $pmux cells.\n"); log("$pmux cells.\n");
log("\n");
log("This optimisation is conservative --- it will only pack $mux or $pmux cells with\n");
log("other such cells if it can be certain that the select lines are mutually\n");
log("exclusive.\n");
log("\n"); log("\n");
} }
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE