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Diffstat (limited to 'lib/Transforms/Scalar/GVNPRE.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/GVNPRE.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/GVNPRE.cpp b/lib/Transforms/Scalar/GVNPRE.cpp index 69e5f73..9c7c8c2 100644 --- a/lib/Transforms/Scalar/GVNPRE.cpp +++ b/lib/Transforms/Scalar/GVNPRE.cpp @@ -757,6 +757,8 @@ void GVNPRE::val_insert(ValueNumberedSet& s, Value* v) { /// val_replace - Insert a value into a set, replacing any values already in /// the set that have the same value number void GVNPRE::val_replace(ValueNumberedSet& s, Value* v) { + if (s.count(v)) return; + uint32_t num = VN.lookup(v); Value* leader = find_leader(s, num); if (leader != 0) |