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7046752
2014 Jul 17
4
[LLVMdev] Removing metadata in a pass
Is it OK to remove metadata in an optimization pass? The context is patch
http://reviews.llvm.org/D4571 which removes loop unrolling hint metadata
after using it to avoid unrolling more than the hint suggests. This is a
potential problem because loop unrolling can be run more than once.
Example: a loop annotated with "#pragma clang loop unroll_count(2)" which
adds hint metadata to the