[PATCH] D39758: CodeGen: Fix pointer info in SplitVecOp_EXTRACT_VECTOR_ELT

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: lib/CodeGen/MachineInstr.cpp:1016
+    return PSVa->mayAlias(&MFI);
+  if (PSVb && MMOb->getPointerInfo().hasUnknownOffset())
+    return PSVb->mayAlias(&MFI);
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The new patch is mostly the right idea, but I'm not sure I like the way hasUnknownOffset modifies the meaning of MachineMemOperand... we have code which accesses the offset scattered all over.


https://reviews.llvm.org/D39758