is sorted.  This is not the case currently, which is causing no end of
problems.

llvm-svn: 14990

Heavily refactor handleVirtualRegisterDef, adding comments and making it more
efficient.  It is also much easier to follow and convince ones self that it is
correct :)

Add -debug output to the joine, showing the result of joining the intervals.

llvm-svn: 14989

remove map that is not needed

llvm-svn: 14988

llvm-svn: 14987

classof<ConstantXXX> is now MUCH faster than it used to be.

llvm-svn: 14986

llvm-svn: 14985

rename ConstantVal to SimpleConstantVal

llvm-svn: 14984

llvm-svn: 14983

llvm-svn: 14982

llvm-svn: 14981

llvm-svn: 14980

and a list of don'ts for the library. All so future maintainers don't
break the important contract this library has with its user: LLVM.

llvm-svn: 14979

llvm-svn: 14978

llvm-svn: 14977

llvm-svn: 14976

llvm-svn: 14975

llvm-svn: 14974

night compiling cfrac.  It did not realize that code like this:

int G; int *H = &G;

takes the address of G.

llvm-svn: 14973

llvm-svn: 14972

llvm-svn: 14971

Updated to remove references to ConstantPointerRef and reflect the change
in the inheritance hierarchy: GlobalValue now derives from Constant.

llvm-svn: 14969

llvm-svn: 14968

llvm-svn: 14967

llvm-svn: 14966

llvm-svn: 14965

too.

llvm-svn: 14964

llvm-svn: 14963

llvm-svn: 14962

llvm-svn: 14961

llvm-svn: 14960

llvm-svn: 14959

llvm-svn: 14958

llvm-svn: 14957

llvm-svn: 14956

llvm-svn: 14955

llvm-svn: 14954

- Replace ConstantPointerRef usage with GlobalValue usage

llvm-svn: 14953

- Minimize redundant isa<GlobalValue> usage

llvm-svn: 14952

- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14951

- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14950