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yosys: avoid resynthesis on ORFS upgrade when yosys doesn't change
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This still works:

bazel run //sram:sdq_17x64_synth $(pwd)/tmp open_synth

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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@oharboe
oharboe committed Oct 23, 2024
1 parent 128438d commit 9bc97a7
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Showing 2 changed files with 93 additions and 39 deletions.
30 changes: 24 additions & 6 deletions docker.BUILD.bazel
View file
Original file line number Diff line number Diff line change
Expand Up @@ -104,19 +104,37 @@ filegroup(
visibility = ["//visibility:public"],
)

MAKEFILE_SHARED = [
"OpenROAD-flow-scripts/flow/util/utils.mk",
"OpenROAD-flow-scripts/flow/scripts/*.py",
"OpenROAD-flow-scripts/flow/scripts/*.sh",
"OpenROAD-flow-scripts/flow/scripts/*.yaml",

]

# Narrowly define yosys dependencies to avoid hours of resynthesis
# upon upgrading ORFS since yosys hardly ever changes
filegroup(
name = "makefile_yosys",
srcs = ["OpenROAD-flow-scripts/flow/Makefile"],
data = glob(MAKEFILE_SHARED + [
"OpenROAD-flow-scripts/flow/scripts/*.script",
"OpenROAD-flow-scripts/flow/scripts/util.tcl",
"OpenROAD-flow-scripts/flow/scripts/synth*.tcl",
"OpenROAD-flow-scripts/flow/util/preprocessLib.py",
"OpenROAD-flow-scripts/flow/util/mergeLib.pl",
]),
visibility = ["//visibility:public"],
)

filegroup(
name = "makefile",
srcs = ["OpenROAD-flow-scripts/flow/Makefile"],
data = glob([
"OpenROAD-flow-scripts/flow/util/utils.mk",
data = glob(MAKEFILE_SHARED + [
"OpenROAD-flow-scripts/flow/util/*.pl",
"OpenROAD-flow-scripts/flow/util/*.py",
"OpenROAD-flow-scripts/flow/util/*.sh",
"OpenROAD-flow-scripts/flow/scripts/*.py",
"OpenROAD-flow-scripts/flow/scripts/*.script",
"OpenROAD-flow-scripts/flow/scripts/*.sh",
"OpenROAD-flow-scripts/flow/scripts/*.tcl",
"OpenROAD-flow-scripts/flow/scripts/*.yaml",
]),
visibility = ["//visibility:public"],
)
Expand Down
102 changes: 69 additions & 33 deletions openroad.bzl
View file
Original file line number Diff line number Diff line change
Expand Up @@ -130,26 +130,31 @@ def odb_environment(ctx):
return {"ODB_FILE": ctx.attr.src[OrfsInfo].odb.path}
return {}

def orfs_environment(ctx):
return {
"HOME": _work_home(ctx),
"STDBUF_CMD": "",
"TCL_LIBRARY": commonpath(ctx.files._tcl),
"WORK_HOME": _work_home(ctx),
}

def flow_environment(ctx):
return {
"DLN_LIBRARY_PATH": commonpath(ctx.files._ruby_dynamic),
"FLOW_HOME": ctx.file._makefile.dirname,
"HOME": _work_home(ctx),
"KLAYOUT_CMD": ctx.executable._klayout.path,
"OPENROAD_EXE": ctx.executable._openroad.path,
"QT_PLUGIN_PATH": commonpath(ctx.files._qt_plugins),
"QT_QPA_PLATFORM_PLUGIN_PATH": commonpath(ctx.files._qt_plugins),
"RUBYLIB": ":".join([commonpath(ctx.files._ruby), commonpath(ctx.files._ruby_dynamic)]),
"STDBUF_CMD": "",
"TCL_LIBRARY": commonpath(ctx.files._tcl),
"WORK_HOME": _work_home(ctx),
}
} | orfs_environment(ctx)

def yosys_environment(ctx):
return {
"ABC": ctx.executable._abc.path,
"YOSYS_EXE": ctx.executable._yosys.path,
}
"FLOW_HOME": ctx.file._makefile_yosys.dirname,
} | orfs_environment(ctx)

def config_environment(config):
return {"DESIGN_CONFIG": config.path}
Expand Down Expand Up @@ -182,13 +187,22 @@ def flow_inputs(ctx):

def yosys_inputs(ctx):
return depset(
[ctx.executable._abc, ctx.executable._yosys] +
[
ctx.executable._abc,
ctx.executable._yosys,
ctx.executable._make,
ctx.file._makefile_yosys,
] +
ctx.files._tcl,
transitive = [
ctx.attr._abc[DefaultInfo].default_runfiles.files,
ctx.attr._abc[DefaultInfo].default_runfiles.symlinks,
ctx.attr._yosys[DefaultInfo].default_runfiles.files,
ctx.attr._yosys[DefaultInfo].default_runfiles.symlinks,
ctx.attr._makefile_yosys[DefaultInfo].default_runfiles.files,
ctx.attr._makefile_yosys[DefaultInfo].default_runfiles.symlinks,
ctx.attr._make[DefaultInfo].default_runfiles.files,
ctx.attr._make[DefaultInfo].default_runfiles.symlinks,
],
)

Expand Down Expand Up @@ -310,7 +324,7 @@ def _deps_impl(ctx):
def flow_provides():
return [DefaultInfo, OutputGroupInfo, OrfsDepInfo, OrfsInfo, LoggingInfo, PdkInfo, TopInfo]

def flow_attrs():
def orfs_attrs():
return {
"arguments": attr.string_dict(
doc = "Dictionary of additional flow arguments.",
Expand All @@ -330,25 +344,34 @@ def flow_attrs():
doc = "Variant of the used flow.",
default = "base",
),
"_deploy_template": attr.label(
default = ":deploy.tpl",
allow_single_file = True,
"_make": attr.label(
doc = "make binary.",
executable = True,
allow_files = True,
cfg = "exec",
default = Label("@docker_orfs//:make"),
),
"_make_template": attr.label(
default = ":make.tpl",
allow_single_file = True,
"_tcl": attr.label(
doc = "Tcl library.",
allow_files = True,
default = Label("@docker_orfs//:tcl8.6"),
),
"_makefile": attr.label(
doc = "Top level makefile.",
allow_single_file = ["Makefile"],
default = Label("@docker_orfs//:makefile"),
),
"_make": attr.label(
doc = "make binary.",
executable = True,
allow_files = True,
cfg = "exec",
default = Label("@docker_orfs//:make"),
}

def flow_attrs():
return {
"_deploy_template": attr.label(
default = ":deploy.tpl",
allow_single_file = True,
),
"_make_template": attr.label(
default = ":make.tpl",
allow_single_file = True,
),
"_openroad": attr.label(
doc = "OpenROAD binary.",
Expand All @@ -374,11 +397,6 @@ def flow_attrs():
allow_files = True,
default = Label("@docker_orfs//:ruby_dynamic3.0.0"),
),
"_tcl": attr.label(
doc = "Tcl library.",
allow_files = True,
default = Label("@docker_orfs//:tcl8.6"),
),
"_opengl": attr.label(
doc = "OpenGL drivers.",
allow_files = True,
Expand All @@ -394,7 +412,7 @@ def flow_attrs():
allow_files = True,
default = Label("@docker_orfs//:gio_modules"),
),
}
} | orfs_attrs()

def yosys_only_attrs():
return {
Expand All @@ -412,6 +430,11 @@ def yosys_only_attrs():
cfg = "exec",
default = Label("@docker_orfs//:yosys"),
),
"_makefile_yosys": attr.label(
doc = "Top level makefile yosys.",
allow_single_file = ["Makefile"],
default = Label("@docker_orfs//:makefile_yosys"),
),
}

def renamed_inputs_attr():
Expand Down Expand Up @@ -452,6 +475,8 @@ def openroad_only_attrs():
}

def yosys_attrs():
# flow_attrs() is not used by synthesis, but by bazel run foo_synth to
# open synthesis results in OpenROAD
return flow_attrs() | yosys_only_attrs()

def openroad_attrs():
Expand Down Expand Up @@ -626,18 +651,16 @@ def _yosys_impl(ctx):
commands = _generation_commands(canon_logs) + [ctx.executable._make.path + " $@"]

ctx.actions.run_shell(
arguments = ["--file", ctx.file._makefile.path, canon_output.path],
arguments = ["--file", ctx.file._makefile_yosys.path, canon_output.path],
command = " && ".join(commands),
env = _verilog_arguments(ctx.files.verilog_files) |
flow_environment(ctx) |
yosys_environment(ctx) |
config_environment(config),
inputs = depset(
[config] +
ctx.files.verilog_files +
ctx.files.extra_configs,
transitive = [
flow_inputs(ctx),
yosys_inputs(ctx),
data_inputs(ctx),
pdk_inputs(ctx),
Expand All @@ -661,7 +684,7 @@ def _yosys_impl(ctx):
ctx.actions.run_shell(
arguments = [
"--file",
ctx.file._makefile.path,
ctx.file._makefile_yosys.path,
"--old-file",
canon_output.path,
"yosys-dependencies",
Expand All @@ -671,14 +694,12 @@ def _yosys_impl(ctx):
],
command = " && ".join(commands),
env = _verilog_arguments([]) |
flow_environment(ctx) |
yosys_environment(ctx) |
config_environment(config),
inputs = depset(
[canon_output, config] +
ctx.files.extra_configs,
transitive = [
flow_inputs(ctx),
yosys_inputs(ctx),
data_inputs(ctx),
pdk_inputs(ctx),
Expand All @@ -688,7 +709,22 @@ def _yosys_impl(ctx):
outputs = synth_outputs + synth_logs,
)

outputs = [canon_output] + synth_outputs
# Dummy action to make sure that the flow environment is available to
# bazel run foo_synth without causing resynthesis when upgrading
# ORFS where yosys did not change, saves many hours of synthesis
dummy_output = _declare_artifact(ctx, "results", "dummy.txt")
ctx.actions.run_shell(
command = "touch " + dummy_output.path,
env = flow_environment(ctx),
inputs = depset(
transitive = [
flow_inputs(ctx),
],
),
outputs = [dummy_output],
)

outputs = [canon_output] + synth_outputs + [dummy_output]

config_short = _declare_artifact(ctx, "results", "1_synth.short.mk")
ctx.actions.write(
Expand Down

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