[PATCH] D20528: [X86][SSE] Replace lossless i32/f32 to f64 conversion intrinsics with generic IR

[Simon Pilgrim via cfe-commits]

RKSimon added a comment.

In http://reviews.llvm.org/D20528#437117, @mkuper wrote:

> Sorry, I didn't intend to imply the rest of the llvm work is necessary for this to go in. Just that I'd be happier with this patch knowing that we have a regression test for doing the (shuffle + fpext, say) lowering correctly. I didn't even mean fast-isel, only the DAG.


The fast-isel tests are the most self contained (and are useful to show the non-optimized codegen for every intrinsic in the headers). I can submit them now if you wish.


Repository:
  rL LLVM

http://reviews.llvm.org/D20528