251 (providing a generic machine code rewriter/spiller).

llvm-svn: 11780

llvm-svn: 11779

llvm-svn: 11778

llvm-svn: 11777

llvm-svn: 11776

llvm-svn: 11775

llvm-svn: 11774

llvm-svn: 11773

llvm-svn: 11772

llvm-svn: 11771

llvm-svn: 11770

llvm-svn: 11769

Also, turn 'shr int %X, 1234' into 'shr int %X, 31'

llvm-svn: 11768

llvm-svn: 11767

llvm-svn: 11766

llvm-svn: 11765

llvm-svn: 11764

llvm-svn: 11763

llvm-svn: 11762

llvm-svn: 11761

llvm-svn: 11760

llvm-svn: 11759

llvm-svn: 11758

llvm-svn: 11757

llvm-svn: 11756

llvm-svn: 11755

llvm-svn: 11754

llvm-svn: 11753

llvm-svn: 11752

llvm-svn: 11751

llvm-svn: 11750

llvm-svn: 11749

block into MachineBasicBlock::getFirstTerminator().

This also fixes a bug in the implementation of the above in both
RegAllocLocal and InstrSched, where instructions where added after the
terminator if the basic block's only instruction was a terminator (it
shouldn't matter for RegAllocLocal since this case never occurs in
practice).

llvm-svn: 11748

block we are in might be empty

llvm-svn: 11744

eventually get an assignment due to elimination of PHIs.

llvm-svn: 11743

llvm-svn: 11742

llvm-svn: 11741

whether this is the sign bit or not, so check unsigned comparisons as well.

llvm-svn: 11740

llvm-svn: 11739

Improved PhysRegTracker interface. RegAlloc lazily allocates the register tracker using a std::auto_ptr

llvm-svn: 11738