nss-3.41/nss/automation/saw/bmul.saw

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

import "bmul.cry";

print "Loading LLVM bitcode...";
m <- llvm_load_module "../../../dist/Debug/lib/libfreeblpriv3.so.bc";

let SpecBinaryMul n = do {
  x <- llvm_var "x" (llvm_int n);
  y <- llvm_var "y" (llvm_int n);
  llvm_ptr "r_high" (llvm_int n);
  r_high <- llvm_var "*r_high" (llvm_int n);
  llvm_ptr "r_low" (llvm_int n);
  r_low <- llvm_var "*r_low" (llvm_int n);

  let res = {{ bmul x y }};
  llvm_ensure_eq "*r_high" {{ res.0 }};
  llvm_ensure_eq "*r_low" {{ res.1 }};

  llvm_verify_tactic abc;
};

print "Proving equality for 32-bit bmul()...";
time (llvm_verify m "bmul32" [] (SpecBinaryMul 32));