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abc9_ops: add -prep_bypass for auto bypass boxes; refactor

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Eliminate need for abc9_{,un}map.v in xilinx
-prep_dff_{hier,unmap} -> -prep_hier
This commit is contained in:
Eddie Hung 2020-04-21 12:22:39 -07:00
parent bb840cca9c
commit 7cd3f4a79b
11 changed files with 714 additions and 988 deletions
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64
passes/techmap/abc9.cc
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@ -275,22 +275,31 @@ struct Abc9Pass : public ScriptPass
void script() YS_OVERRIDE
{
if (check_label("check")) {
run("abc9_ops -check");
if (help_mode)
run("abc9_ops -check [-dff]", "(option if -dff)");
else
run(stringf("abc9_ops -check %s", dff_mode ? "-dff" : ""));
}
if (check_label("dff", "(only if -dff)")) {
if (dff_mode || help_mode) {
run("abc9_ops -prep_dff_hier"); // derive all used (* abc9_flop *) modules,
// create stubs in $abc9_unmap design
run("design -stash $abc9");
run("design -copy-from $abc9 @$abc9_flops"); // copy derived modules in
run("proc");
run("wbflip");
run("techmap");
run("opt");
if (check_label("map")) {
if (help_mode)
run("abc9_ops -prep_hier -prep_bypass [-prep_dff -dff]", "(option if -dff)");
else
run(stringf("abc9_ops -prep_hier -prep_bypass %s", dff_mode ? "-prep_dff -dff" : ""));
if (dff_mode) {
run("design -copy-to $abc9_map @$abc9_flops", "(only if -dff)");
run("select -unset $abc9_flops", " (only if -dff)");
}
run("design -stash $abc9");
run("design -load $abc9_map");
run("proc");
run("wbflip");
run("techmap");
run("opt");
if (dff_mode) {
if (!help_mode)
active_design->scratchpad_unset("abc9_ops.prep_dff_map.did_something");
run("abc9_ops -prep_dff_map"); // rewrite specify
run("abc9_ops -prep_dff_map", "(only if -dff)"); // rewrite specify
bool did_something = help_mode || active_design->scratchpad_get_bool("abc9_ops.prep_dff_map.did_something");
if (did_something) {
// select all $_DFF_[NP]_
@ -299,6 +308,8 @@ struct Abc9Pass : public ScriptPass
// lastly remove $_DFF_[NP]_ cells
run("setattr -set submod \"$abc9_flop\" t:$_DFF_?_ %ci* %co* t:$_DFF_?_ %d");
run("submod");
run("setattr -mod -set whitebox 1 -set abc9_flop 1 -set abc9_box 1 *_$abc9_flop");
run("abc9_ops -prep_dff_unmap");
run("design -copy-to $abc9 *_$abc9_flop"); // copy submod out
run("delete *_$abc9_flop");
if (help_mode) {
@ -313,21 +324,13 @@ struct Abc9Pass : public ScriptPass
run(stringf("rename %s_$abc9_flop _TECHMAP_REPLACE_", module->name.c_str()));
}
}
run("design -stash $abc9_map");
}
run("design -load $abc9");
run("design -delete $abc9");
run("select -unset $abc9_flops");
if (did_something) { // techmap user design into submod + $_DFF_[NP]_
run("techmap -wb -max_iter 1 -map %$abc9_map -map +/abc9_map.v");
run("design -delete $abc9_map");
run("setattr -mod -set whitebox 1 -set abc9_flop 1 -set abc9_box 1 *_$abc9_flop");
run("abc9_ops -prep_dff_unmap"); // implement $abc9_unmap design
}
else
run("techmap -wb -max_iter 1 -map +/abc9_map.v");
}
run("design -stash $abc9_map");
run("design -load $abc9");
run("design -delete $abc9");
run("techmap -wb -max_iter 1 -map %$abc9_map -map +/abc9_map.v");
run("design -delete $abc9_map");
}
if (check_label("pre")) {
@ -353,9 +356,10 @@ struct Abc9Pass : public ScriptPass
run("aigmap");
run("design -stash $abc9_holes");
run("design -load $abc9");
run("design -delete $abc9");
}
if (check_label("map")) {
if (check_label("exe")) {
run("aigmap");
if (help_mode) {
run("foreach module in selection");
@ -430,12 +434,10 @@ struct Abc9Pass : public ScriptPass
}
}
if (check_label("post")) {
if (dff_mode || help_mode) {
run("techmap -wb -map %$abc9_unmap", "(only if -dff)"); // techmap user design from submod back to original cell
if (check_label("unmap")) {
run("techmap -wb -map %$abc9_unmap -map +/abc9_unmap.v"); // techmap user design from submod back to original cell
// ($_DFF_[NP]_ already shorted by -reintegrate)
run("design -delete $abc9_unmap", " (only if -dff)");
}
run("design -delete $abc9_unmap");
if (saved_designs.count("$abc9_holes") || help_mode)
run("design -delete $abc9_holes");
}