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| author | Hristina Palikareva <h.palikareva@imperial.ac.uk> | 2014-12-03 13:43:44 +0000 |
|---|---|---|
| committer | Hristina Palikareva <h.palikareva@imperial.ac.uk> | 2014-12-03 13:43:44 +0000 |
| commit | d0ca2fd3211f3bc0cfc582df978b6a82ea7ec390 (patch) | |
| tree | 3919ab02e4dab4f9c0a7d7fbdb1bb6264859c549 /lib | |
| parent | d0f8c9ee4140689043ff5857f5283f6b0d22cbdc (diff) | |
| download | klee-d0ca2fd3211f3bc0cfc582df978b6a82ea7ec390.tar.gz | |
Handling overshift behaviour in MetaSMTBuilder
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Solver/MetaSMTBuilder.h | 15 |
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); } |