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build: only resynthesise when input RTLIL changes.

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Ouch.
This commit is contained in:
Asherah Connor 2024-06-27 19:26:33 +03:00
parent 7aa12417e6
commit b4eef36627
1 changed files with 27 additions and 6 deletions
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33
niar/build.py
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@ -5,7 +5,9 @@ from functools import partial
from typing import Optional
from amaranth.build import Platform
from amaranth.build.run import LocalBuildProducts
from .cmdrunner import CommandRunner
from .logging import logger, logtime
from .project import Project
@ -38,6 +40,12 @@ def add_arguments(np: Project, parser):
action="store_true",
help="output debug Verilog",
)
parser.add_argument(
"-f",
"--force",
action="store_true",
help="don't use cached synthesis",
)
def main(np: Project, args):
@ -46,33 +54,46 @@ def main(np: Project, args):
platform = np.target_by_name(args.board)
design = construct_top(np, platform)
name = f"{np.name}-{type(platform).__name__}"
with logtime(logging.DEBUG, "elaboration"):
plan = platform.prepare(
design,
np.name,
name,
debug_verilog=args.verilog,
yosys_opts="-g",
)
fn = f"{np.name}.il"
fn = f"{name}.il"
size = len(plan.files[fn])
logger.debug(f"{fn!r}: {size:,} bytes")
with logtime(logging.DEBUG, "synthesis/pnr"):
products = plan.execute_local("build")
cr = CommandRunner(force=args.force)
products = None
def execute_build():
nonlocal products
products = plan.execute_local("build")
cr.add_process(execute_build,
infs=[np.path.build(fn)],
outf=np.path.build(name))
cr.run()
if products is None:
# XXX: good lord.
products = LocalBuildProducts(np.path.build())
if args.program:
with logtime(logging.DEBUG, "programming"):
platform.toolchain_program(products, np.name)
platform.toolchain_program(products, name)
heading = re.compile(r"^\d+\.\d+\. Printing statistics\.$", flags=re.MULTILINE)
next_heading = re.compile(r"^\d+\.\d+\. ", flags=re.MULTILINE)
log_file_between(logging.INFO, f"build/{np.name}.rpt", heading, next_heading)
log_file_between(logging.INFO, f"build/{name}.rpt", heading, next_heading)
logger.info("Device utilisation:")
heading = re.compile(r"^Info: Device utilisation:$", flags=re.MULTILINE)
next_heading = re.compile(r"^Info: Placed ", flags=re.MULTILINE)
log_file_between(
logging.INFO, f"build/{np.name}.tim", heading, next_heading, prefix="Info: "
logging.INFO, f"build/{name}.tim", heading, next_heading, prefix="Info: "
)