[LLVMbugs] [Bug 22413] New vector shuffle legality: turns movss (SSE2) or blendps (SSE4.2+) into shufps.

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun Feb 15 05:04:09 PST 2015


Chandler Carruth <chandlerc at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #1 from Chandler Carruth <chandlerc at gmail.com> ---
This doesn't look like a bug to me, but maybe something along the way fixed it.

The blend form of 'movss' is no faster than shufps really. Not sure its worth
adding logic to try to use it. The other example in the test case uses shufps
and a movss for me.

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