[PATCH] D32872: [PowerPC] Leverage PGO data to version/expand small/large memcpy calls

[Hal Finkel via Phabricator via llvm-commits]

hfinkel added inline comments.


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Comment at: lib/Target/PowerPC/PPCLowerMemIntrinsics.cpp:149
+  if (PSI) {
+    DominatorTree DT(*ParentFunc);
+    LoopInfo LI(DT);
----------------
You shouldn't do all of this for every memcpy call. That seems like it's at least O(N^2).


https://reviews.llvm.org/D32872