[PATCH] D47621: [X86] Block UndefRegUpdate

[Tomasz Krupa via Phabricator via llvm-commits]

tkrupa created this revision.
tkrupa added a reviewer: craig.topper.
Herald added a subscriber: llvm-commits.

Prevent folding of operations with memory loads when one of the sources has undefined register update.


Repository:
  rL LLVM

https://reviews.llvm.org/D47621

Files:
  lib/Target/X86/X86InstrInfo.cpp
  test/CodeGen/X86/fast-isel-int-float-conversion-x86-64.ll
  test/CodeGen/X86/fast-isel-int-float-conversion.ll
  test/CodeGen/X86/vector-sqrt.ll

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