llvm-svn: 61572

the argument to be stored to an alloca by tracking uses
of the alloca.  This occurs 4 times (out of 7121, 0.05%)
in MultiSource/Applications, so may not be worth it.  On
the other hand, it is easy to do and fairly cheap.  The
functions it helps are: W_addcom and W_addlit in spiff;
process_args (argv) in d (make_dparser); ercPixConcealIMB
in JM/ldecod.

llvm-svn: 61570

change.

llvm-svn: 61569

llvm-svn: 61566

llvm-svn: 61564

llvm-svn: 61563

llvm-svn: 61562

llvm-svn: 61561

llvm-svn: 61560

llvm-svn: 61559

and clean recursive descent parser.

This change has a couple of ramifications:
1. The parser code is about 400 lines shorter (in what we maintain, not
   including what is autogenerated).
2. The code should be significantly faster than the old code because we 
   don't have to work around bison's poor handling of datatypes with 
   ctors/dtors.  This also makes the code much more resistant to memory 
   leaks.
3. We now get caret diagnostics from the .ll parser, woo.
4. The actual diagnostics emited from the parser are completely different
   so a bunch of testcases had to be updated.
5. I now disallow "%ty = type opaque %ty = type i32".  There was no good
   reason to support this, it was just an accident of the old 
   implementation.  I have no reason to think that anyone is actually using
   this.
6. The syntax for sticking a global variable has changed to make it 
   unambiguous.  I don't think anyone is depending on this since only clang
   supports this and it is not solid yet, so I'm not worried about anything
   breaking.
7. This gets rid of the last use of bison, and along with it the .cvs files.
   I'll prune this from the makefiles as a subsequent commit.

There are a few minor cleanups that can be done after this commit (suggestions
welcome!) but this passes dejagnu testing and is ready for its time in the
limelight.

llvm-svn: 61558

Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register.

llvm-svn: 61557

llvm-svn: 61556

Use movaps / movd to extract vector element 0 even with sse4.1. It's still cheaper than pextrw especially if the value is in memory.

llvm-svn: 61555

llvm-svn: 61554

reason. Two functions which mutually require each other to be nocapture 
are not currently supported.

llvm-svn: 61553

functions that don't write can't leak a pointer except through 
the return value, so a void readonly function is implicitly nocapture.

Test these, and add a test that verifies that f1 calling f2 with an 
otherwise dead pointer gets both of them marked nocapture.

llvm-svn: 61552

llvm-svn: 61551

llvm-svn: 61550

might one day fall into.

llvm-svn: 61549

leading comments.

llvm-svn: 61548

and BRCOND conditions.  Reorder a few methods while
there.

llvm-svn: 61547

  otherwise, some unlucky souls start looking for a 'dejagnu' binary...
* Properly capitalized LLVM.

llvm-svn: 61546

llvm-svn: 61545

promote from i1 all the way up to the canonical SetCC type.
In order to discover an appropriate type to use, pass
MVT::Other to getSetCCResultType.  In order to be able to
do this, change getSetCCResultType to take a type as an
argument, not a value (this is also more logical).

llvm-svn: 61542

* Added the first LLVM unittest -- DenseMap.
* Updated mkpatch utility to include llvm/unittests dir
* Added top-level target "unittests" to run all unittests

llvm-svn: 61541

* Removed gtest_main.cc: we have our own main() elsewhere
* Simplified the Makefile as we don't need SOURCES

* Moved the internal header to gtest/internal/
* Simplified the Makefile to remove -I param to CPP.Flags

* Updated README.LLVM with all the steps I took to massage GTest to
  work in LLVM so far

llvm-svn: 61540

Makefile with it, without resorting to the use of VPATH.

Also added Makefiles at every level of the directory tree to properly recurse
to Google Test and build it as a library (original Makefiles by Talin).

llvm-svn: 61539

llvm-svn: 61538

 xor (or (icmp, icmp), true) -> and(icmp, icmp)

This is possible because of De Morgan's law.

llvm-svn: 61537

there's nothing in the vector. Pacify them.

llvm-svn: 61536

calculating nocapture attributes.

llvm-svn: 61535

llvm-svn: 61533

llvm-svn: 61532

llvm-svn: 61531

llvm-svn: 61530

llvm-svn: 61529

llvm-svn: 61528

llvm-svn: 61527

Added a README.LLVM file to indicate which files and directories
were removed from the original source tarball.

llvm-svn: 61526