- Comment fixes.
 - Moar whitespace.
 - Made ivars "private" by default.
No functionality change.

llvm-svn: 50926

llvm-svn: 50922

no functional change.

llvm-svn: 50921

Note, some of the code will be moved into target independent part of DAG combiner in a subsequent patch.

llvm-svn: 50918

llvm-svn: 50917

case where there are multiple blocks with a large
number of common tail instructions more efficiently
(compile time optimization).

llvm-svn: 50916

clashes on ::X

llvm-svn: 50912

llvm-svn: 50911

llvm-svn: 50910

llvm-svn: 50908

crash on kimwitu++.

llvm-svn: 50901

llvm-svn: 50900

Fixed the build breakage, sorry for that.

llvm-svn: 50895

llvm-svn: 50883

   ~x < ~y --> y < x
   -x == -y --> x == y

llvm-svn: 50882

llvm-svn: 50881

llvm-svn: 50880

llvm-svn: 50878

llvm-svn: 50874

llvm-svn: 50872

llvm-svn: 50871

llvm-svn: 50869

llvm-svn: 50868

llvm-svn: 50867

llvm-svn: 50863

Patch by Matthijs Kooijman!

llvm-svn: 50861

also need to be checked for memory modifying instructions before we
can sink them.  THis fixes the second half of PR2297.

llvm-svn: 50860

delete the first store in:

store x -> p
load p
store y -> p

This is for PR2297.

llvm-svn: 50859

Instruction::mayWriteToMemory stronger for invokes.

llvm-svn: 50858

llvm-svn: 50851

Darwin.  This is a hack of course, but it does
at least look at the right thing: gotpcrel means
that this is already an offset, so an explicit
offset is not needed (and wrong).  I think this
is good enough for the moment: Anton is working
on something better.

llvm-svn: 50850

llvm-svn: 50841

base is not zero.  This fixes test/C++Frontend/2008-05-07-CrazyOffsetOf.cpp

llvm-svn: 50840

Handle vector move / load which zero the destination register top bits (i.e. movd, movq, movss (addr), movsd (addr)) with X86 specific dag combine.

llvm-svn: 50838

llvm-svn: 50837

llvm-svn: 50836

llvm-svn: 50833

llvm-svn: 50828

by an instance of LibCallInfo to provide mod/ref info of
standard library functions.  This is powerful enough to
say that 'sqrt' is readonly except that it modifies errno,
or that "printf doesn't store to memory unless the %n
constraint is present" etc.

llvm-svn: 50827

llvm-svn: 50826