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// SPDX-License-Identifier: Apache-2.0
package firrtl.backends.experimental.smt.end2end
import java.io.File
import firrtl.stage.{FirrtlStage, OutputFileAnnotation}
import firrtl.util.BackendCompilationUtilities
import logger.LazyLogging
import org.scalatest.flatspec.AnyFlatSpec
import scala.sys.process.{Process, ProcessLogger}
/** compiles the regression tests to SMTLib and parses the result with z3 */
class SMTCompilationTest extends AnyFlatSpec with LazyLogging {
it should "generate valid SMTLib for AddNot" taggedAs (RequiresZ3) in { compileAndParse("AddNot") }
it should "generate valid SMTLib for FPU" taggedAs (RequiresZ3) in { compileAndParse("FPU") }
it should "generate valid SMTLib for HwachaSequencer" taggedAs (RequiresZ3) in {
compileAndParse("HwachaSequencer")
}
it should "generate valid SMTLib for ICache" taggedAs (RequiresZ3) in { compileAndParse("ICache") }
it should "generate valid SMTLib for Ops" taggedAs (RequiresZ3) in { compileAndParse("Ops") }
// TODO: enable Rob test once we support more than 2 write ports on a memory
it should "generate valid SMTLib for Rob" taggedAs (RequiresZ3) ignore { compileAndParse("Rob") }
it should "generate valid SMTLib for RocketCore" taggedAs (RequiresZ3) in { compileAndParse("RocketCore") }
private def compileAndParse(name: String): Unit = {
val testDir = BackendCompilationUtilities.createTestDirectory(name + "-smt")
val inputFile = new File(testDir, s"${name}.fir")
BackendCompilationUtilities.copyResourceToFile(s"/regress/${name}.fir", inputFile)
val args = Array(
"-ll",
"error", // surpress warnings to keep test output clean
"--target-dir",
testDir.toString,
"-i",
inputFile.toString,
"-E",
"experimental-smt2"
// "-fct", "firrtl.backends.experimental.smt.StutteringClockTransform"
)
val res = (new FirrtlStage).execute(args, Seq())
val fileName = res.collectFirst { case OutputFileAnnotation(file) => file }.get
val smtFile = testDir.toString + "/" + fileName + ".smt2"
val log = ProcessLogger(_ => (), logger.error(_))
val z3Ret = Process(Seq("z3", smtFile)).run(log).exitValue()
assert(z3Ret == 0, s"Failed to parse SMTLib file $smtFile generated for $name")
}
}
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