Remvoe some dead code

llvm-svn: 5070

Fix some bugs in use of MBB vs. BB and iterators that are invalidated before
we use them.

Reference targetClass by enum name, not by number.

llvm-svn: 5069

is needed on BSD (MacOS).
Also, use -Ldir instead of -L dir on the link line.  Same reason...

llvm-svn: 5068

llvm-svn: 5067

register allocation

llvm-svn: 5066

llvm-svn: 5065

the dependence on PhysRegClassMap

llvm-svn: 5064

llvm-svn: 5063

llvm-svn: 5062

llvm-svn: 5061

llvm-svn: 5060

llvm-svn: 5059

llvm-svn: 5058

llvm-svn: 5057

llvm-svn: 5056

llvm-svn: 5055

spills and reloads emitted

llvm-svn: 5054

llvm-svn: 5053

llvm-svn: 5052

  function from normal regalloc code
* Make the regalloc for a block a function instead of part of runOnMachineBB, which
  makes it easier to see what's going on in runOnMBB.

llvm-svn: 5051

llvm-svn: 5050

overhead

llvm-svn: 5049

* Make allocateStackSpaceFor only allocate the right amount of space

llvm-svn: 5048

* Change regclass iterators to use an extra level of pointers

llvm-svn: 5047

* Regclass iterators need an extra level of pointerness to work right
* Pull inverse mapping code out of target description files

llvm-svn: 5046

target register description classes.

llvm-svn: 5045

llvm-svn: 5044

llvm-svn: 5043

llvm-svn: 5042

llvm-svn: 5041

llvm-svn: 5040

llvm-svn: 5039

llvm-svn: 5038

llvm-svn: 5037

llvm-svn: 5036

llvm-svn: 5035

Add support for boolean constants
add getClassB method

llvm-svn: 5034

llvm-svn: 5033

Add a bunch of methods to MachineOperand is* to reduce usage of MO_foo

llvm-svn: 5032

llvm-svn: 5031