angst.

llvm-svn: 109718

extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.

llvm-svn: 109705

llvm-svn: 109172

rip out the implementation of X86InstrInfo::GetInstSizeInBytes.
The code being ripped out just implemented a copy and hacked up
version of the (old) instruction encoder, and is buggy and 
terrible in other ways.  Since "GetInstSizeInBytes" is really 
only there to support the JIT's "NeedsExactSize" hook (which
noone is using), just rip out the code.  I will rip out the
NeedsExactSize hook next.

This resolves rdar://7617809 - switch X86InstrInfo::GetInstSizeInBytes to use X86MCCodeEmitter

llvm-svn: 109149

llvm-svn: 109111

llvm-svn: 109110

llvm-svn: 109109

for creating and populating NamedMDNodes.

llvm-svn: 109061

llvm-svn: 108889

llvm-svn: 108864

llvm-svn: 108854

llvm-svn: 108851

this is still minimal on purpose, but I plan to migrate the ugly
hack under #ifdef DEBUG_CAST_OPERATORS into this file

llvm-svn: 108849

llvm-svn: 108611

EXPECT_{TRUE,FALSE}(...) macros. This also prevents suprious warnings about
bool-to-pointer conversion that occurs withit EXPECT_EQ.

llvm-svn: 108248

llvm-svn: 108048

ADT: Add DAGDeltaAlgorithm, which is a DAG minimization algorithm built on top of the standard 'delta debugging' algorithm.
 - This can give substantial speedups in the delta process for inputs we can construct dependency information for.

llvm-svn: 105612

llvm-svn: 105390

implementation. Force the internal one to unbreak clang selfhost on linux.

llvm-svn: 105386

llvm-svn: 105355

This means that our Registers are now ordered R7, R8, R9, R10, R12, ...
Not R1, R10, R11, R12, R2, R3, ...

llvm-svn: 104745

llvm-svn: 103723

 - This provides a convenient alternative to using something llvm::prior or
   manual iterator access, for example::

    if (T *Prev = foo->getPrevNode())
      ...

   instead of::

     iterator it(foo);
     if (it != begin()) {
       --it;
       ... 
     }

 - Chris, please review.

llvm-svn: 103647

and fix a bug in BitVector's reference proxy class which this exposed.

llvm-svn: 102768

SmallBitVector: Rework find_first/find_next and tweak test to test them (at least on 64 bit platforms).

llvm-svn: 102712

llvm-svn: 102709

llvm-svn: 101689

to CallGraphSCCPass's instead of passing around a
std::vector<CallGraphNode*>.  No functionality change,
but now we have a much tidier interface.

llvm-svn: 101558

llvm-svn: 101131

llvm-svn: 100486

llvm-svn: 99633

llvm-svn: 98850

aligned storage, the capacity may be more than what is explicitly
requested.

llvm-svn: 98846

llvm-svn: 98761

llvm-svn: 98701

llvm-svn: 98634

llvm-svn: 98632

llvm-svn: 98628

llvm-svn: 98625

adjusted unittest

I have added some doxygen to OptionalOperandTraits,
so hopefully there will be no confusion in the future.

Incidentally OptionalOperandTraits is not used any more (IIUC),
but the obvious client would be BranchInstr, and I plan
to rearrange it that way.

llvm-svn: 98624