Simon Pilgrim 01e39346f3 [X86][SSE] Improve legal SHUFP and PSHUFD shuffle matching
Updated X86TargetLowering::isShuffleMaskLegal to match SHUFP masks with commuted inputs and PSHUFD masks that reference the second input.

As part of this I've refactored isPSHUFDMask to work in a more general manner and allow it to match against either the first or second input vector.

Differential Revision: http://reviews.llvm.org/D6287



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222087 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-15 21:13:05 +00:00
2014-04-07 03:57:04 +00:00
2014-03-02 13:08:46 +00:00
2014-10-16 22:48:02 +00:00
2014-03-12 22:40:22 +00:00
2014-04-26 19:05:45 +00:00

Low Level Virtual Machine (LLVM)
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