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https://github.com/verilator/verilator.git
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107 lines
3.3 KiB
Python
Executable File
107 lines
3.3 KiB
Python
Executable File
#!/usr/bin/env python3
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# DESCRIPTION: Verilator: Verilog Test driver/expect definition
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#
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# Copyright 2024 by Wilson Snyder. This program is free software; you
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# can redistribute it and/or modify it under the terms of either the GNU
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# Lesser General Public License Version 3 or the Perl Artistic License
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# Version 2.0.
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# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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import vltest_bootstrap
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test.scenarios('vlt_all')
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test.sim_time = 2000000
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root = ".."
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if not os.path.exists(root + "/.git"):
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test.skip("Not in a git repository")
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# Read optimizations
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optimizations = []
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hdrFile = "../src/V3DfgPeephole.h"
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with open(hdrFile, 'r', encoding="utf8") as hdrFh:
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prevOpt = ""
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lineno = 0
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for line in hdrFh:
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lineno += 1
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m = re.search(r'^\s*_FOR_EACH_DFG_PEEPHOLE_OPTIMIZATION_APPLY\(macro, (\w+)\)', line)
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if not m:
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continue
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opt = m.group(1)
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if prevOpt > opt:
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test.error(hdrFile + ":" + str(lineno) + ": '" + opt + "; is not in sorted order")
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prevOpt = opt
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optimizations.append(opt)
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if len(optimizations) < 1:
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test.error("no optimizations defined in " + hdrFile)
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# Generate the equivalence checks and declaration boilerplate
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rdFile = test.top_filename
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plistFile = test.obj_dir + "/portlist.vh"
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pdeclFile = test.obj_dir + "/portdecl.vh"
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checkFile = test.obj_dir + "/checks.h"
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with open(rdFile, 'r', encoding="utf8") as rdFh, \
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open(plistFile, 'w', encoding="utf8") as plistFh, \
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open(pdeclFile, 'w', encoding="utf8") as pdeclFh, \
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open(checkFile, 'w', encoding="utf8") as checkFh:
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for line in rdFh:
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m = re.search(r'^\s*.*`signal\((\w+),', line)
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if not m:
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continue
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sig = m.group(1)
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plistFh.write(sig + ",\n")
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pdeclFh.write("output " + sig + ";\n")
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checkFh.write("if (ref." + sig + " != opt." + sig + ") {\n")
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checkFh.write(" std::cout << \"Mismatched " + sig + "\" << std::endl;\n")
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checkFh.write(" std::cout << \"Ref: 0x\" << std::hex << (ref." + sig +
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" + 0) << std::endl;\n")
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checkFh.write(" std::cout << \"Opt: 0x\" << std::hex << (opt." + sig +
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" + 0) << std::endl;\n")
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checkFh.write(" std::exit(1);\n")
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checkFh.write("}\n")
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# Compile un-optimized
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test.compile(verilator_flags2=[
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"--stats",
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"--build",
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"-fno-dfg",
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"+incdir+" + test.obj_dir,
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"-Mdir", test.obj_dir + "/obj_ref",
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"--prefix", "Vref"
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]) # yapf:disable
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# Compile optimized - also builds executable
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test.compile(verilator_flags2=[
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"--stats",
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"--build",
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"--exe",
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"+incdir+" + test.obj_dir,
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"-Mdir", test.obj_dir + "/obj_opt",
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"--prefix", "Vopt",
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"-fno-const-before-dfg", # Otherwise V3Const makes testing painful
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"--dump-dfg", # To fill code coverage
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"-CFLAGS \"-I .. -I ../obj_ref\"",
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"../obj_ref/Vref__ALL.a",
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"../../t/" + test.name + ".cpp"
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]) # yapf:disable
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# Execute test to check equivalence
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test.execute(executable=test.obj_dir + "/obj_opt/Vopt")
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def check(name):
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name = name.lower()
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name = re.sub(r'_', ' ', name)
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test.file_grep(test.obj_dir + "/obj_opt/Vopt__stats.txt",
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r'DFG\s+(pre|post) inline Peephole, ' + name + r'\s+([1-9]\d*)')
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# Check all optimizations defined in
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for opt in optimizations:
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check(opt)
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test.passes()
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