third time around: instead of disabling this completely,
authorChris Lattner <sabre@nondot.org>
Thu, 6 Dec 2007 07:47:55 +0000 (07:47 +0000)
committerChris Lattner <sabre@nondot.org>
Thu, 6 Dec 2007 07:47:55 +0000 (07:47 +0000)
commitd3fd6d2b25fc4e932ac796664ae7f4cd810ced8a
treef997308334b6548298d00db05b4c995eca04334b
parente00cbad78de86ac8e736f35db35632c83ef64c1d
third time around: instead of disabling this completely,
only disable it if we don't know it will be obviously profitable.
Still fixme, but less so. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44658 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
test/CodeGen/X86/shift-combine.ll