Pete Cooper a8db71e840 Add a version of Intrinsic::getName which is more efficient when there are no overloads. ...

When running 'opt -O2 verify-uselistorder-nodbg.lto.bc', there are 33m allocations.  8.2m
come from std::string allocations in Intrinsic::getName().  Turns out this method only
returns a std::string because it needs to handle overloads, but that is not the common case.

This adds an overload of getName which just returns a StringRef when there are no overloads
and so saves on the allocations.

llvm-svn: 279113

2016-08-18 18:30:54 +00:00

43 KiB

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