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Add support for suppressing OpenROAD warnings in place_and_route #417

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Merged
merged 1 commit into from
Aug 13, 2025
Merged

Add support for suppressing OpenROAD warnings in place_and_route #417

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3 changes: 3 additions & 0 deletions place_and_route/build_defs.bzl
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Original file line number Diff line number Diff line change
Expand Up @@ -155,6 +155,9 @@ place_and_route = rule(
""",
values = [step[0] for step in PLACE_AND_ROUTE_STEPS],
),
"suppress_warnings": attr.string_list(
doc = "A list of OpenROAD warnings to suppress, e.g., [\"STA-1212\", \"PDR-0020\"].",
),
"synthesized_rtl": attr.label(
mandatory = True,
providers = [SynthesisInfo],
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10 changes: 10 additions & 0 deletions place_and_route/open_road.bzl
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Expand Up @@ -211,6 +211,16 @@ def openroad_command(ctx, commands, input_db = None, step_name = None, inputs =

real_commands = []

if hasattr(ctx.attr, "suppress_warnings") and ctx.attr.suppress_warnings:
for warning in ctx.attr.suppress_warnings:
parts = warning.split("-")
if len(parts) != 2:
fail(
"Invalid format in suppress_warnings: {}. ".format(warning) +
"Expected format: MODULE-NUMBER",
)
real_commands.append('::utl::suppress_message "{}" "{}"'.format(parts[0], parts[1]))

# Liberty Setup
stdcell_info = ctx.attr.synthesized_rtl[SynthesisInfo].standard_cell_info
liberty = stdcell_info.default_corner.liberty
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