Nick Lewycky fa30607eca Factor out the multiply analysis code in ComputeMaskedBits and apply it to the
overflow checking multiply intrinsic as well.

Add a test for this, updating the test from grep to FileCheck.

llvm-svn: 153028
2012-03-18 23:28:48 +00:00
..
2012-03-15 20:24:29 +00:00