flag rotate left word immediate then mask insert (rlwimi) as a two-address
instruction, and update the ISel usage of the instruction accordingly.

This will allow us to properly schedule rlwimi, and use it to efficiently
codegen bitfield operations.

llvm-svn: 17068

llvm-svn: 17067

ugly and giant constnat exprs in some programs.

llvm-svn: 17066

involving %B instead of allowing any geps except %A's.

llvm-svn: 17065

* Wrap at 80 cols

llvm-svn: 17064

been defined yet!

llvm-svn: 17063

llvm-svn: 17062

llvm-svn: 17061

llvm-svn: 17059

llvm-svn: 17058

llvm-svn: 17057

llvm-svn: 17056

llvm-svn: 17055

llvm-svn: 17054

llvm-svn: 17053

llvm-svn: 17052

llvm-svn: 17051

llvm-svn: 17050

now compile:

'foo() {}' into "ret" instead of "mov EAX, 0; ret"

llvm-svn: 17049

llvm-svn: 17048

llvm-svn: 17047

llvm-svn: 17046

llvm-svn: 17045

ignore unreachable instructions

llvm-svn: 17044

llvm-svn: 17043

that are initialized with undef.  When promoting malloc to a global, start out
initialized to undef

llvm-svn: 17042

llvm-svn: 17041

llvm-svn: 17040

llvm-svn: 17039

llvm-svn: 17038

llvm-svn: 17037

llvm-svn: 17036

llvm-svn: 17035

llvm-svn: 17034

llvm-svn: 17033

Update for changes in LLVM 1.4 bytecode format.

llvm-svn: 17032

llvm-svn: 17031

llvm-svn: 17030

llvm-svn: 17029

llvm-svn: 17027