[PATCH] D58197: [x86] vectorize more cast ops in lowering to avoid register file transfers

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: llvm/trunk/test/CodeGen/X86/vec_int_to_fp.ll:5874
+; AVX512VLDQ-NEXT:    vpermilps {{.*#+}} xmm0 = xmm0[3,1,2,3]
+; AVX512VLDQ-NEXT:    vcvtudq2pd %xmm0, %ymm0
+; AVX512VLDQ-NEXT:    # kill: def $xmm0 killed $xmm0 killed $ymm0
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Why not "vcvtudq2pd %xmm0, %xmm0"?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D58197/new/

https://reviews.llvm.org/D58197