* Add four new cases to handle the new optimizations for strlen, dealing
  with:
    strlen(x) != 0 -> *x != 0
    strlen(x) == 0 -> *x == 0
  for each of two cases: strlen(x) != 0 and strlen(x) == 0

llvm-svn: 21767

    strlen(x) != 0 -> *x != 0
    strlen(x) == 0 -> *x == 0
* Change nested statistics to use style of other LLVM statistics so that
  only the name of the optimization (simplify-libcalls) is used as the
  statistic name, and the description indicates which specific all is
  optimized. Cuts down on some redundancy and saves a few bytes of space.
* Make note of stpcpy optimization that could be done.

llvm-svn: 21766

llvm-svn: 21762

Reassociate/shifttest.ll

llvm-svn: 21761

llvm-svn: 21760

llvm-svn: 21759

llvm-svn: 21758

llvm-svn: 21757

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llvm-svn: 21755

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llvm-svn: 21752

llvm-svn: 21751

llvm-svn: 21750

still to come.

llvm-svn: 21749

llvm-svn: 21748

llvm-svn: 21747

llvm-svn: 21746

llvm-svn: 21745

llvm-svn: 21744

llvm-svn: 21743

varargs munging code

llvm-svn: 21742

not change code after testing it without retesting!

llvm-svn: 21741

llvm-svn: 21740

llvm-svn: 21739

llvm-svn: 21738

llvm-svn: 21737

llvm-svn: 21736

llvm-svn: 21735

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llvm-svn: 21730

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llvm-svn: 21728

llvm-svn: 21727

llvm-svn: 21726

llvm-svn: 21723

Alexander Friedman.

llvm-svn: 21722

llvm-svn: 21721