[PATCH] D34141: [X86] Recognize constant arrays with special values and replace loads from it with subtract and shift instructions, which then may be replaced by BZHI machine instruction.

[Elena Demikhovsky via Phabricator via llvm-commits]

delena added a comment.

I suggest to put this transformation in a separate pass. The pass should be added to X86 IR passes ,see X86PassConfig::addIRPasses().
Other targets, interested in this pass,  may add it as well.


https://reviews.llvm.org/D34141