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

[Michael Kuperstein via cfe-commits]

mkuper added a comment.

Presumably, the fast-isel lowering of the IR pattern is already correct, and in any case, it isn't affected by this patch.
I just want to make sure we don't regress the optimized DAG codegen - that is, it still produces the instruction we'd expect from the intrinsic (or something at least as good).


Repository:
  rL LLVM

http://reviews.llvm.org/D20528