From: Clifford Wolf Date: Mon, 29 Apr 2019 11:38:56 +0000 (+0200) Subject: Add "peepopt" skeleton X-Git-Tag: yosys-0.9~155^2~7 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ea547bcaa355239d927a8b43fde37fcfdaf71ffb;p=yosys.git Add "peepopt" skeleton Signed-off-by: Clifford Wolf --- diff --git a/passes/pmgen/.gitignore b/passes/pmgen/.gitignore index c9263057e..0ad36ea2c 100644 --- a/passes/pmgen/.gitignore +++ b/passes/pmgen/.gitignore @@ -1 +1,2 @@ /ice40_dsp_pm.h +/peepopt_pm.h diff --git a/passes/pmgen/Makefile.inc b/passes/pmgen/Makefile.inc index e0609d9ba..b8a14df90 100644 --- a/passes/pmgen/Makefile.inc +++ b/passes/pmgen/Makefile.inc @@ -1,8 +1,20 @@ OBJS += passes/pmgen/ice40_dsp.o +OBJS += passes/pmgen/peepopt.o + +# -------------------------------------- passes/pmgen/ice40_dsp.o: passes/pmgen/ice40_dsp_pm.h EXTRA_OBJS += passes/pmgen/ice40_dsp_pm.h .SECONDARY: passes/pmgen/ice40_dsp_pm.h passes/pmgen/ice40_dsp_pm.h: passes/pmgen/pmgen.py passes/pmgen/ice40_dsp.pmg - $(P) mkdir -p passes/pmgen && python3 $^ $@ + $(P) mkdir -p passes/pmgen && python3 $< -o $@ -p ice40_dsp $(filter-out $<,$^) + +# -------------------------------------- + +passes/pmgen/peepopt.o: passes/pmgen/peepopt_pm.h +EXTRA_OBJS += passes/pmgen/peepopt_pm.h +.SECONDARY: passes/pmgen/peepopt_pm.h + +passes/pmgen/peepopt_pm.h: passes/pmgen/pmgen.py passes/pmgen/peepopt.pmg + $(P) mkdir -p passes/pmgen && python3 $< -o $@ -p peepopt $(filter-out $<,$^) diff --git a/passes/pmgen/peepopt.cc b/passes/pmgen/peepopt.cc new file mode 100644 index 000000000..e9aa8e37a --- /dev/null +++ b/passes/pmgen/peepopt.cc @@ -0,0 +1,60 @@ +/* + * yosys -- Yosys Open SYnthesis Suite + * + * Copyright (C) 2012 Clifford Wolf + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#include "kernel/yosys.h" +#include "kernel/sigtools.h" +#include "passes/pmgen/peepopt_pm.h" + +USING_YOSYS_NAMESPACE +PRIVATE_NAMESPACE_BEGIN + +struct PeepoptPass : public Pass { + PeepoptPass() : Pass("peepopt", "collection of peephole optimizers") { } + void help() YS_OVERRIDE + { + // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| + log("\n"); + log(" peepopt [options] [selection]\n"); + log("\n"); + log("This pass applies a collection of peephole optimizers to the current design.\n"); + log("\n"); + } + void execute(std::vector args, RTLIL::Design *design) YS_OVERRIDE + { + log_header(design, "Executing PEEOPOPT pass (run peephole optimizers).\n"); + + size_t argidx; + for (argidx = 1; argidx < args.size(); argidx++) + { + // if (args[argidx] == "-singleton") { + // singleton_mode = true; + // continue; + // } + break; + } + extra_args(args, argidx, design); + + for (auto module : design->selected_modules()) { + peepopt_pm pm(module, module->selected_cells()); + pm.run_shiftmul(); + } + } +} PeepoptPass; + +PRIVATE_NAMESPACE_END diff --git a/passes/pmgen/peepopt.pmg b/passes/pmgen/peepopt.pmg new file mode 100644 index 000000000..0a56016b2 --- /dev/null +++ b/passes/pmgen/peepopt.pmg @@ -0,0 +1,34 @@ +pattern shiftmul + +state shamt + +match shift + select shift->type.in($shift, $shiftx, $shr) +endmatch + +code shamt + shamt = port(shift, \B); + if (shamt[GetSize(shamt)-1] == State::S0) { + do { + shamt.remove(GetSize(shamt)-1); + } while (shamt[GetSize(shamt)-1] == State::S0); + } else + if (param(shift, \B_SIGNED).as_bool()) { + reject; + } +endcode + +match mul + select mul->type.in($mul) + select port(mul, \A).is_fully_const() || port(mul, \B).is_fully_const() + index port(mul, \Y) === shamt +endmatch + +code + IdString const_factor_port = port(mul, \A).is_fully_const() ? \A : \B; + int const_factor = port(mul, const_factor_port).as_int(); + if (GetSize(port(shift, \Y)) > const_factor) + reject; + log_dump(shift, shamt, mul, const_factor); + reject; +endcode diff --git a/passes/pmgen/pmgen.py b/passes/pmgen/pmgen.py index bb4c9d66b..24ad07359 100644 --- a/passes/pmgen/pmgen.py +++ b/passes/pmgen/pmgen.py @@ -420,6 +420,10 @@ with open(outfile, "w") as f: print(" run_{}([&](){{on_accept_f(st_{});}});".format(current_pattern, current_pattern), file=f) print(" }", file=f) print("", file=f) + print(" void run_{}() {{".format(current_pattern), file=f) + print(" run_{}([](){{}});".format(current_pattern, current_pattern), file=f) + print(" }", file=f) + print("", file=f) current_pattern = None for index in range(len(blocks)):