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Author SHA1 Message Date
Roman Tereshin a0383d6c1f Reapply "[CGP] Check for existing inttotpr before creating new one" 
Original commit: r351582

llvm-svn: 351626
 2019-01-19 03:37:25 +00:00
Roman Tereshin 022bf3e8e7 Revert "Reapply "[CGP] Check for existing inttotpr before creating new one"" 
This reverts commit r351618.

Compiler RT + ASAN tests are failing for PowerPC. Not sure
how would I reproduce these on macOS, so reverting (again)
until I do.

llvm-svn: 351619
 2019-01-19 01:53:26 +00:00
Roman Tereshin dd6f9f68bb Reapply "[CGP] Check for existing inttotpr before creating new one" 
Original commit: r351582

llvm-svn: 351618
 2019-01-19 01:41:03 +00:00
Roman Tereshin 86ac532687 Revert "[CGP] Check for existing inttotpr before creating new one" 
This reverts commit r351582.

Bots are failing. Reverting this to fix and re-commit later.

llvm-svn: 351598
 2019-01-18 21:38:44 +00:00
Roman Tereshin 85a0467a11 [CGP] Check for existing inttotpr before creating new one 
Make sure CodeGenPrepare doesn't emit multiple inttoptr instructions of
the same integer value while sinking address computations, but rather
CSEs them on the fly: excessive inttoptr's confuse SCEV into thinking
that related pointers have nothing to do with each other.

This problem blocks LoadStoreVectorizer from vectorizing some of the
loads / stores in a downstream target.

Reviewed By: hfinkel

Differential Revision: https://reviews.llvm.org/D56838

llvm-svn: 351582
 2019-01-18 20:13:42 +00:00