[PATCH] D15776: [RFC] Selectively print functions for print-after-all/print-before-all

[Weiming Zhao via llvm-commits]

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Recently, I debugged some mis-compilation bug exposed with LTO. I knew which function was mis-compiled but I didn't know which transformation caused the issue. 
I run -print-after-all but after several hours and generating 1 GB log file,  it was still running. So I patched LLVM to let it accept an option to print out only specified function and it worked very well for me. (finished in 20 seconds to print out my interested function)

I think this feature might be useful to other developers.

Repository:
  rL LLVM

http://reviews.llvm.org/D15776

Files:
  include/llvm/Pass.h
  lib/Analysis/CallGraphSCCPass.cpp
  lib/Analysis/LoopPass.cpp
  lib/CodeGen/MachineFunctionPrinterPass.cpp
  lib/IR/IRPrintingPasses.cpp
  lib/IR/LegacyPassManager.cpp

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