memset into a single larger memset.

llvm-svn: 123086

llvm-svn: 123082

input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537

llvm-svn: 81257

of using llvm-as, now that opt supports this.

llvm-svn: 81226

and simplify code that was fallout from the separation of memcpyopt and gvn.

llvm-svn: 50034

GVN and into its own pass.

llvm-svn: 49419

llvm-svn: 48938

llvm-svn: 48732

llvm-svn: 48731

This fires dozens of times across spec and multisource, but I don't know
if it actually speeds stuff up.  Hopefully the testers will show something
nice :)

llvm-svn: 48680