[PATCH] Optimization for certain shufflevector by using insertps.

Filipe Cabecinhas filcab+llvm.phabricator at gmail.com
Wed Apr 23 14:46:54 PDT 2014

Hi nadav,

If we're doing a v4f32 shuffle on x86 with SSE4.1, we can lower certain
shufflevectors to an insertps instruction:
When most of the shufflevector result's elements come from one vector (and
keep their index), and one element comes from another vector or a memory

Added tests for insertps optimizations on shufflevector.


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