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dual clock sdc exist, causing TCLCMD-1594 error #904

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Merged
cedard234 merged 2 commits into from
Jul 13, 2026
Merged

dual clock sdc exist, causing TCLCMD-1594 error #904

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b1af311
dual clock sdc exist, causing TCLCMD-1594 error
cedard234 Jul 11, 2026
ef12a2b
bugfix: define mapped.sdc first, otherwise 'clk' would not have been …
cedard234 Jul 11, 2026
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15 changes: 10 additions & 5 deletions hammer/common/cadence/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -129,16 +129,21 @@ def generate_mmmc_script(self) -> str:
def append_mmmc(cmd: str) -> None:
self.verbose_tcl_append(cmd, mmmc_output)

# Add the post-synthesis SDC, if present.
post_synth_sdc = self.post_synth_sdc

sdc_files = self.generate_sdc_files()

# If a post-synthesis SDC is present it already contains clock definitions,
# so drop the Hammer-generated clock fragment to avoid duplicate create_clock.
if post_synth_sdc is not None:
clock_fragment = os.path.join(self.run_dir, "clock_constraints_fragment.sdc")
sdc_files = [f for f in sdc_files if f != clock_fragment]
sdc_files.insert(0, post_synth_sdc)

# Append any custom SDC files.
sdc_files.extend(self.get_setting("vlsi.inputs.custom_sdc_files"))

# Add the post-synthesis SDC, if present.
post_synth_sdc = self.post_synth_sdc
if post_synth_sdc is not None:
sdc_files.append(post_synth_sdc)

# TODO: add floorplanning SDC
if len(sdc_files) > 0:
sdc_files_arg = "-sdc_files [list {sdc_files}]".format(
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