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-rw-r--r--lib/Solver/MetaSMTBuilder.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/Solver/MetaSMTBuilder.h b/lib/Solver/MetaSMTBuilder.h
index b5c99907..458c55ba 100644
--- a/lib/Solver/MetaSMTBuilder.h
+++ b/lib/Solver/MetaSMTBuilder.h
@@ -499,6 +499,11 @@ typename SolverContext::result_type MetaSMTBuilder<SolverContext>::bvVarLeftShif
bvLeftShift(expr, width, i, shiftBits),
res));
}
+
+ // If overshifting, shift to zero
+ res = evaluate(_solver, metaSMT::logic::Ite(bvult(shift, bvConst32(shiftBits, width)),
+ res,
+ bvZero(width)));
return(res);
}
@@ -521,6 +526,11 @@ typename SolverContext::result_type MetaSMTBuilder<SolverContext>::bvVarRightShi
res));
// ToDo Reconsider widht to provide to bvRightShift
}
+
+ // If overshifting, shift to zero
+ res = evaluate(_solver, metaSMT::logic::Ite(bvult(shift, bvConst32(shiftBits, width)),
+ res,
+ bvZero(width)));
return(res);
}
@@ -548,6 +558,11 @@ typename SolverContext::result_type MetaSMTBuilder<SolverContext>::bvVarArithRig
constructAShrByConstant(expr, width, i, signedBool, shiftBits),
res));
}
+
+ // If overshifting, shift to zero
+ res = evaluate(_solver, metaSMT::logic::Ite(bvult(shift, bvConst32(shiftBits, width)),
+ res,
+ bvZero(width)));
return(res);
}