llvm-svn: 5786

llvm-svn: 5785

llvm-svn: 5784

llvm-svn: 5783

llvm-svn: 5782

llvm-svn: 5781

llvm-svn: 5780

* Add two compatibility options to work better with new GCC frontend

llvm-svn: 5779

llvm-svn: 5778

llvm-svn: 5777

llvm-svn: 5776

llvm-svn: 5775

llvm-svn: 5774

llvm-svn: 5773

test case for the CVS commit-diffs.pl script which should show the entire
contents of this file below:

llvm-svn: 5772

* Make Mem2Reg assign version numbers now for renamed variables instead of
  .mem2reg suffixes.  This produces what people think of as SSA.

llvm-svn: 5771

llvm-svn: 5770

look nicer and removed useless stuff.

Also renamed a few variables, moved them into namespaces, converted outputting
to a file into a print to std::cerr with a DEBUG() guard, as all passes should
do anyway.

No functional changes have been made. However, this code now compiles.

llvm-svn: 5769

* Lines must be wrapped at 80 chars. This is a hard limit.
* Consistent style on functions, braces, if, for, etc. Code must be readable.

No functional changes have been made, even though I added a new typedef.

llvm-svn: 5768

llvm-svn: 5767

which is used  by Modulo Scheduling pass

llvm-svn: 5766

llvm-svn: 5765

llvm-svn: 5764

llvm-svn: 5763

llvm-svn: 5762

llvm-svn: 5761

llvm-svn: 5760

several ways:

 * Load expressions are not PRE'd well.  Alias Analysis should be used to
   get accurate information when computing anticipatibility.
 * The expression collection implementation does not handle PHI nodes properly,
   thus the implementation misses many opportunities to PRE.
 * This code could be sped up quite a bit

Despite these flaws, the code seems to work well, and handles PR's as one
would expect.

llvm-svn: 5759

llvm-svn: 5758

* Small modification to be more efficient

llvm-svn: 5757

llvm-svn: 5756

llvm-svn: 5755

llvm-svn: 5754

llvm-svn: 5753

llvm-svn: 5752

llvm-svn: 5751

* Add support for implicit zero initializers

llvm-svn: 5750

  - Null values are implicitly encoded instead of explicitly, this makes
    things more compact!
  - More compactly represent ConstantPointerRefs
  - Bytecode files are represented as:
      Header|GlobalTypes|GlobalVars/Function Protos|Constants|Functions|SymTab
    instead of
      Header|GlobalTypes|Constants|GlobalVars/Function Protos|Functions|SymTab
    which makes a lot of things simpler.

Writer changes:
  - We now explictly encode versioning information in the bytecode files.
  - This allows new code to read bytecode files produced by old code, but
    new bytecode files can have enhancements such as the above.  Although this
    makes the reader a bit more complex (having to deal with old formats), the
    writer only needs to be able to produce the most recent version.

llvm-svn: 5749

  - Fix problems where the constant table would not get updated when
    resolving constants causes other constants to change.

Changes to the V2 bytecode format
  - Null values are implicitly encoded instead of explicitly, this makes
    things more compact!
  - More compactly represent ConstantPointerRefs
  - Bytecode files are represented as:
      Header|GlobalTypes|GlobalVars/Function Protos|Constants|Functions|SymTab
    instead of
      Header|GlobalTypes|Constants|GlobalVars/Function Protos|Functions|SymTab
    which makes a lot of things simpler.

Changes to the reader:
  - Function loading code is much simpler.  We now no longer make function
    PlaceHolderHelper objects to be replaced with real functions.

llvm-svn: 5748

llvm-svn: 5747