[PATCH] D15003: Interface to attach maximum function count from PGO to module as module flags.

[David Li via llvm-commits]

davidxl added a comment.

I think the inliner/indirect call promoter also needs another meta data at the module level -- that is the max internal BB count (of the program) .

In the longer term, we also need to design better program summary information such as bb counter histogram with respect to exec freq -- but for now, max BB count would be sufficient.


================
Comment at: lib/IR/Module.cpp:502
@@ +501,3 @@
+      cast_or_null<ConstantAsMetadata>(getModuleFlag("MaxFunctionCount"));
+  if (!Val) return None;
+  return cast<ConstantInt>(Val->getValue())->getZExtValue();
----------------
Format -- put return in a new line.


Repository:
  rL LLVM

http://reviews.llvm.org/D15003