[PATCH] [X86] Replace avx2.pbroadcast intrinsics with native IR.

[Sanjay Patel]

Hi Ahmed -

I had a similar patch in http://reviews.llvm.org/D8276, but then it was pointed out that this may not be the best solution. The concern is that doing it this way may alter/optimize code at -O0 (debugging vector code is hard enough without the damn compiler getting in the way!).

So for my next patch on this front, http://reviews.llvm.org/D8486, I used instcombine so there would be no changes in the front-end or -O0.

Adding some other folks who might have an opinion about the best way forward.


http://reviews.llvm.org/D10555

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