testing, the subtracts are because I was in the neighborhood.

llvm-svn: 7581

llvm-svn: 7580

Define a few preliminary node types.

llvm-svn: 7579

specific in the tree patterns

llvm-svn: 7578

llvm-svn: 7568

llvm-svn: 7567

llvm-svn: 7565

llvm-svn: 7564

llvm-svn: 7563

llvm-svn: 7558

llvm-svn: 7556

llvm-svn: 7552

* Use .zero to emit padding between struct elements
* Emit .comm symbols when we can, this dramatically reduces the amount of gunk we have to print
* Print global variable identifiers next to initializer more nicely.

llvm-svn: 7551

llvm-svn: 7547

llvm-svn: 7546

llvm-svn: 7542

llvm-svn: 7541

llvm-svn: 7540

* Fix bug in the createNOP method, which was not marking the operands of the
  generated XCHG as useanddef.  I don't think this method is actually used,
  so it wasn't breaking anything, but it should be fixed anyway...

llvm-svn: 7539

llvm-svn: 7538

llvm-svn: 7537

llvm-svn: 7536

llvm-svn: 7535

llvm-svn: 7534

llvm-svn: 7533

llvm-svn: 7532

llvm-svn: 7531

llvm-svn: 7523

llvm-svn: 7522

llvm-svn: 7521

llvm-svn: 7513

llvm-svn: 7512

llvm-svn: 7511

llvm-svn: 7510

llvm-svn: 7509

llvm-svn: 7505

llvm-svn: 7504

llvm-svn: 7503

llvm-svn: 7498

llvm-svn: 7497