tree 3b21ee826210f9e65320f834639ca261c3a87ac9
parent 68d29d09c6dce41777120cb7beb25549eb100f68
author Chris Lattner <sabre@nondot.org> 1257715206 +0000
committer Chris Lattner <sabre@nondot.org> 1257715206 +0000

Teach an instcombine to not pull trunc instructions through PHI nodes
when both the source and dest are illegal types, since it would cause
the phi to grow (for example, we shouldn't transform test14b's phi to
a phi on i320).  This fixes an infinite loop on i686 bootstrap with
phi slicing turned on, so turn it back on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86483 91177308-0d34-0410-b5e6-96231b3b80d8