[IRCE] Add comments, NFC.
authorSanjoy Das <sanjoy@playingwithpointers.com>
Tue, 17 Mar 2015 00:42:16 +0000 (00:42 +0000)
committerSanjoy Das <sanjoy@playingwithpointers.com>
Tue, 17 Mar 2015 00:42:16 +0000 (00:42 +0000)
commit7a0b7f5996cbce5a204754a60d5cb12df69a28fe
treec3c12aca4463d8e90b53c4370c9392d2da147d44
parente2cde6f195914c19f2c1e1e8c6d34a539c95c7f7
[IRCE] Add comments, NFC.

This change adds some comments that justify why a potentially
overflowing operation is safe.

llvm-svn: 232445
llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp