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Commit c2081d1c authored by Benjamin Kramer's avatar Benjamin Kramer
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Fix a integer overflow in SimplifyCFG's look up table formation logic. 

If the width is very large it gets truncated from uint64_t to uint32_t when
passed to TD->fitsInLegalInteger. The truncated value can fit in a register.
This manifested in massive memory usage or crashes (PR13946).

llvm-svn: 164784
parent eb9c0d0e
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