[PATCH] D44726: [X86] Add ReadAfterLds to some 3 src instructions

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, atrick.

I think we're supposed to have a ReadAfterLd for each operand that's read after load?

Sometimes the operand comes after the memory operand so we need 5 ReadDefaults first.

I suspect we also need to do something for the mask operand for masked avx512 instructions? I'm not sure if the mask should be ReadAfterLd or not since it can mask faults. If it shouldn't be ReadAfterLd then we're probably wrong for zero masking instructions already.


https://reviews.llvm.org/D44726

Files:
  lib/Target/X86/X86InstrFMA.td
  lib/Target/X86/X86InstrSSE.td
  lib/Target/X86/X86InstrShiftRotate.td
  lib/Target/X86/X86InstrXOP.td

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