[PATCH] D22204: Add getReturnedArgOperand to Call/InvokeInst, CallSite

[Hal Finkel via llvm-commits]

hfinkel created this revision.
hfinkel added reviewers: majnemer, chandlerc.
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In order to make the optimizer smarter about using the 'returned' argument attribute (generally, but motivated by my llvm.noalias intrinsic work), add a utility function to Call/InvokeInst, and CallSite, to make it easy to get the returned call argument (when one exists).

P.S. There is already an unfortunate amount of code duplication between CallInst and InvokeInst, and this adds to it. We should probably clean that up separately.


http://reviews.llvm.org/D22204

Files:
  include/llvm/IR/Attributes.h
  include/llvm/IR/CallSite.h
  include/llvm/IR/Instructions.h
  lib/IR/Attributes.cpp
  lib/IR/Instructions.cpp

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