warning from the CBE+GCC.

llvm-svn: 21779

llvm-svn: 21778

llvm-svn: 21777

llvm-svn: 21776

in.  This tends to get cases like this:

  X = cast ubyte to int
  Y = shr int X, ...

Tested by: shift.ll:test24

llvm-svn: 21775

llvm-svn: 21774

llvm-svn: 21773

llvm-svn: 21772

llvm-svn: 21771

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llvm-svn: 21769

of trying to do local reassociation tweaks at each level, only process an expression
tree once (at its root).  This does not improve the reassociation pass in any real way.

llvm-svn: 21768

* 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

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llvm-svn: 21760

llvm-svn: 21759

llvm-svn: 21758

llvm-svn: 21757

llvm-svn: 21756

llvm-svn: 21755

llvm-svn: 21754

llvm-svn: 21753

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