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authorPaul Marinescu <paul.marinescu@imperial.ac.uk>2013-11-03 19:07:20 +0000
committerDan Liew <daniel.liew@imperial.ac.uk>2014-02-14 17:37:30 +0000
commit3160935d77c3fd6d24be7fddd5c570d6b3944c18 (patch)
tree1f7afaea2a06744df65cdf55886fd7eb5ec0b2b9 /lib/Solver/STPBuilder.cpp
parentd2f1684355e9a99545aa864e3eac81b259712a6f (diff)
downloadklee-3160935d77c3fd6d24be7fddd5c570d6b3944c18.tar.gz
Translate shl overshifts into 0
The other shift operators still need to be changed
Diffstat (limited to 'lib/Solver/STPBuilder.cpp')
-rw-r--r--lib/Solver/STPBuilder.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Solver/STPBuilder.cpp b/lib/Solver/STPBuilder.cpp
index 90252656..6cb7dd38 100644
--- a/lib/Solver/STPBuilder.cpp
+++ b/lib/Solver/STPBuilder.cpp
@@ -223,6 +223,10 @@ ExprHandle STPBuilder::bvVarLeftShift(ExprHandle expr, ExprHandle amount, unsign
                      bvLeftShift(expr, i, shiftBits),
                      res);
   }
+  res = vc_iteExpr(vc,
+                   vc_bvLtExpr(vc, amount, bvConst32(32, width)),
+                   res,
+                   bvZero(width));
   return res;
 }