tree addffe8e4dc346894c3d84afcc5806c17146dd52
parent ea1092374cdeea2a4ba66bfdc33e40c0fee9ebe2
author Chris Lattner <sabre@nondot.org> 1283103960 +0000
committer Chris Lattner <sabre@nondot.org> 1283103960 +0000

rework the ownership of subloop alias information: instead of
keeping them around until the pass is destroyed, keep them
around a) just when useful (not for outer loops) and b) destroy
them right after we use them.  This should reduce memory use
and fixes potential bugs where a loop is deleted and another
loop gets allocated to the same address.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112446 91177308-0d34-0410-b5e6-96231b3b80d8