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Added "prep -nokeepdc"

This commit is contained in:
Clifford Wolf 2016-09-30 17:02:52 +02:00
parent ed519f578e
commit 76352c99c9
1 changed files with 12 additions and 4 deletions
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16
techlibs/common/prep.cc
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@ -63,6 +63,9 @@ struct PrepPass : public ScriptPass
log(" -nordff\n"); log(" -nordff\n");
log(" passed to 'memory_dff'. prohibits merging of FFs into memory read ports\n"); log(" passed to 'memory_dff'. prohibits merging of FFs into memory read ports\n");
log("\n"); log("\n");
log(" -nokeepdc\n");
log(" do not call opt_* with -keepdc\n");
log("\n");
log(" -run <from_label>[:<to_label>]\n"); log(" -run <from_label>[:<to_label>]\n");
log(" only run the commands between the labels (see below). an empty\n"); log(" only run the commands between the labels (see below). an empty\n");
log(" from label is synonymous to 'begin', and empty to label is\n"); log(" from label is synonymous to 'begin', and empty to label is\n");
@ -75,7 +78,7 @@ struct PrepPass : public ScriptPass
} }
string top_module, fsm_opts, memory_opts; string top_module, fsm_opts, memory_opts;
bool autotop, flatten, ifxmode, memxmode, nomemmode; bool autotop, flatten, ifxmode, memxmode, nomemmode, nokeepdc;
virtual void clear_flags() YS_OVERRIDE virtual void clear_flags() YS_OVERRIDE
{ {
@ -87,6 +90,7 @@ struct PrepPass : public ScriptPass
ifxmode = false; ifxmode = false;
memxmode = false; memxmode = false;
nomemmode = false; nomemmode = false;
nokeepdc = false;
} }
virtual void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE virtual void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
@ -136,6 +140,10 @@ struct PrepPass : public ScriptPass
memory_opts += " -nordff"; memory_opts += " -nordff";
continue; continue;
} }
if (args[argidx] == "-nokeepdc") {
nokeepdc = true;
continue;
}
break; break;
} }
extra_args(args, argidx, design); extra_args(args, argidx, design);
@ -177,10 +185,10 @@ struct PrepPass : public ScriptPass
run(ifxmode ? "proc -ifx" : "proc"); run(ifxmode ? "proc -ifx" : "proc");
if (help_mode || flatten) if (help_mode || flatten)
run("flatten", "(if -flatten)"); run("flatten", "(if -flatten)");
run("opt_expr -keepdc"); run(nokeepdc ? "opt_expr" : "opt_expr -keepdc");
run("opt_clean"); run("opt_clean");
run("check"); run("check");
run("opt -keepdc"); run(nokeepdc ? "opt" : "opt -keepdc");
if (!ifxmode) { if (!ifxmode) {
if (help_mode) if (help_mode)
run("wreduce [-memx]"); run("wreduce [-memx]");
@ -194,7 +202,7 @@ struct PrepPass : public ScriptPass
run("opt_clean"); run("opt_clean");
run("memory_collect"); run("memory_collect");
} }
run("opt -keepdc -fast"); run(nokeepdc ? "opt -fast" : "opt -keepdc -fast");
} }
if (check_label("check")) if (check_label("check"))