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Retiming #89

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merged 3 commits into from
Feb 28, 2023
Merged

Retiming #89

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530de62
add retiming step in the Genus plugin
dpgrubb13 Feb 28, 2023
cb108dc
fix formatting
dpgrubb13 Feb 28, 2023
640f504
skip the retiming step if there's nothing to retime
dpgrubb13 Feb 28, 2023
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22 changes: 20 additions & 2 deletions hammer/synthesis/genus/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -85,15 +85,18 @@ def get_tool_hooks(self) -> List[HammerToolHookAction]:

@property
def steps(self) -> List[HammerToolStep]:
return self.make_steps_from_methods([
steps_methods = [
self.init_environment,
self.syn_generic,
self.syn_map,
self.add_tieoffs,
self.write_regs,
self.generate_reports,
self.write_outputs
])
]
if self.get_setting("synthesis.inputs.retime_modules"):
steps_methods.insert(1, self.retime_modules)
return self.make_steps_from_methods(steps_methods)

def do_pre_steps(self, first_step: HammerToolStep) -> bool:
assert super().do_pre_steps(first_step)
Expand Down Expand Up @@ -264,6 +267,21 @@ def init_environment(self) -> bool:

return True

def retime_modules(self) -> bool:
retime_mods = self.get_setting("synthesis.inputs.retime_modules")

if retime_mods:
rt_tcl = (
f"set rt_mods [get_designs \"{' '.join(retime_mods)}\"]\n" \
"foreach rt_mod $rt_mods {\n" \
" set_db $rt_mod .retime true\n" \
"}\n" \
"set_db / .retime_verification_flow true"
)
self.append(rt_tcl)

return True

def syn_generic(self) -> bool:
self.verbose_append("syn_generic")
return True
Expand Down