llvm-svn: 50986

for details.  CodeGen support coming in a follow up patch

llvm-svn: 50985

llvm-svn: 50975

llvm-svn: 50974

in a non-void function that calls abort.

llvm-svn: 50969

llvm-svn: 50967

Move the various analyses used by GVN into static variables so we don't have to keep passing them around or refetching them.

llvm-svn: 50963

llvm-svn: 50962

SCCP like sparse lattice analysis with relative ease.  Just pick your
lattice function and implement the transfer function and you're good.
Just make sure you don't break monotonicity ;-)

llvm-svn: 50961

include backslashes on Windows. This should fix llvm-ld problems on win32.

llvm-svn: 50960

llvm-svn: 50959

method.  DOUT statements are disabled when assertions are off, but the
side effects of getName() are still evaluated.  Just call getNameSTart,
which is close enough and doesn't cause heap traffic.

llvm-svn: 50958

llvm-svn: 50957

llvm-svn: 50950

llvm-svn: 50943

llvm-svn: 50940

than silently generate invalid code.

llvm-gcc does not currently use VAArgInst; it lowers va_arg in the
front-end.

llvm-svn: 50930

llvm-svn: 50929

llvm-svn: 50928

If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy.

llvm-svn: 50927

 - 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

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

crash on kimwitu++.

llvm-svn: 50901

llvm-svn: 50900

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

llvm-svn: 50882

llvm-svn: 50881

llvm-svn: 50878

llvm-svn: 50874

llvm-svn: 50872

llvm-svn: 50869

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