Chris Lattner 30483b0c84 Teach the X86 backend about unreachable and undef. Among other things, we
now compile:

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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17049 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-16 18:13:05 +00:00
..
2004-10-16 17:12:55 +00:00
2004-09-01 22:55:40 +00:00
2004-09-01 22:55:40 +00:00