[PATCH] D41341: [X86] WIP disable 512-bit vectors during type legalization for prefer-vector-width

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 127449.
craig.topper added a comment.

Add some tests.

Fix LowerMULH and LowerShift to not extend to 512-bits when its not legal


https://reviews.llvm.org/D41341

Files:
  lib/Target/X86/X86.td
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86Subtarget.cpp
  lib/Target/X86/X86Subtarget.h
  test/CodeGen/X86/prefer-avx256-basic.ll
  test/CodeGen/X86/prefer-avx256-shift.ll
  test/CodeGen/X86/prefer-avx256-wide-mul.ll

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