There's no need to iterate block merging and PRE. In fact, iterating the latter
commit26ed257c6a168c9348c0eaf4d6dbea6e90f7b50e
authorOwen Anderson <resistor@mac.com>
Wed, 16 Jul 2008 17:52:31 +0000 (16 17:52 +0000)
committerOwen Anderson <resistor@mac.com>
Wed, 16 Jul 2008 17:52:31 +0000 (16 17:52 +0000)
treedbcafafe3e3c5d4a378754e648a71afcc83205ab
parent4ec722e51b093c1d706912ba7bb1b7081001888c
There's no need to iterate block merging and PRE.  In fact, iterating the latter
could cause problems for memdep when it breaks critical edges.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53691 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/GVN.cpp