[PATCH] D27790: Pass sample pgo flags to thinlto.

Teresa Johnson via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Dec 15 16:24:42 PST 2016

tejohnson added inline comments.

Comment at: lib/LTO/LTO.cpp:135
+    if (FileOrErr)
+      Hasher.update(FileOrErr.get()->getBuffer());
+  }
Will this be expensive, for large apps with large profiles? Since this is the same for each backend, can we compute once and pass down?


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