David Majnemer 130b9f99d6 [EarlyCSE] Correctly handle simplified, but live, instructions
Some instructions may have their uses replaced with a symbolic constant.
However, the instruction may still have side effects which percludes it
from being removed from the function.  EarlyCSE treated such an
instruction as if it were removed, resulting in PR28763.

llvm-svn: 277114
2016-07-29 05:39:21 +00:00
..