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diff --git a/security/nss/automation/saw/bmul.saw b/security/nss/automation/saw/bmul.saw
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+// 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));