[llvm-bugs] [Bug 45748] Bad optimization of reverse-initialization of 128-bit vector with 64-bit vectors

via llvm-bugs llvm-bugs at lists.llvm.org
Sun May 10 09:07:44 PDT 2020


Sanjay Patel <spatel+llvm at rotateright.com> changed:

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

--- Comment #5 from Sanjay Patel <spatel+llvm at rotateright.com> ---
The IR is improved with:

And the backend now produces:
movlhps %xmm1, %xmm0            ## xmm0 = xmm0[0],xmm1[0]

I'm assuming that meets the goal for this bug report; reopen if that's not

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