This speeds up the BU pass on 172.mgrid from 62.3 -> 0.1242s.

llvm-svn: 20648

leading whitespace.

llvm-svn: 20647

llvm-svn: 20644

llvm-svn: 20643

llvm-svn: 20642

Print out who commits and what files were modified at the bottom of the test summary log sent to llvm-commits.

llvm-svn: 20641

llvm-svn: 20640

llvm-svn: 20639

llvm-svn: 20638

llvm-svn: 20637

llvm-svn: 20636

llvm-svn: 20635

llvm-svn: 20634

Add support for programs that define main in a .a file, such as f2c'd programs.

llvm-svn: 20631

llvm-svn: 20630

llvm-svn: 20629

so that external globals (and whatever they point to) are marked incomplete.

llvm-svn: 20628

llvm-svn: 20627

 { short, short }

to
  short

where the second short maps onto the second field of the first struct.  In
this case, the struct index is not aligned, so we should avoid calling
getLink(2), which asserts out.

llvm-svn: 20626

llvm-svn: 20623

llvm-svn: 20622

llvm-svn: 20621

llvm-svn: 20620

void foo() {
  G = 1;
}

would have an empty DSGraph even though G (a global) is directly used
in the function.

llvm-svn: 20619

llvm-svn: 20618

llvm-svn: 20617

llvm-svn: 20616

llvm-svn: 20615

llvm-svn: 20614

llvm-svn: 20610

llvm-svn: 20609

llvm-svn: 20608

llvm-svn: 20607

llvm-svn: 20606

llvm-svn: 20605

llvm-svn: 20604

llvm-svn: 20603

llvm-svn: 20602

llvm-svn: 20601

llvm-svn: 20600