[llvm-commits] Patch: Have isa<IntrinsicInst> do a string prefix compare

[Jim Grosbach]

Hi Michael,

This assumes that a) all intrinsics have names starting with "llvm." and b) every function name starting with "llvm." is an intrinsic. Both of those seem pretty strong to me. I don't suppose there's any chance there's docs to that effect in LangRef or anything like that?

-Jim

On Dec 17, 2012, at 1:13 PM, Michael Ilseman <milseman at apple.com> wrote:

> Refactor isIntrinsic() to be quicker, and change classof() (and thus, isa<IntrinsicInst>()) to use it. This decreases the number of occurrences of the slow-path string matching performed by getIntrinsicID().
> 
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