[PATCH] D26923: [CodeGenPrepare] Don't sink non-cheap addrspacecasts.

[Matt Arsenault via llvm-commits]

arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

LGTM



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Comment at: llvm/lib/CodeGen/CodeGenPrepare.cpp:829-832
+  if (auto *ASC = dyn_cast<AddrSpaceCastInst>(CI))
+    if (!TLI.isCheapAddrSpaceCast(ASC->getSrcAddressSpace(),
+                                  ASC->getDestAddressSpace()))
+      return false;
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https://reviews.llvm.org/D26923