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Author SHA1 Message Date
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Jakub Kuderski 2724d45325 [ADCE][Dominators] Reapply: Teach ADCE to preserve dominators 
Summary:
This patch teaches ADCE to preserve both DominatorTrees and PostDominatorTrees.

This is reapplies the original patch r311057 that was reverted in r311381.
The previous version wasn't using the batch update api for updating dominators,
which in vary rare cases caused assertion failures.

This also fixes PR34258.

Reviewers: dberlin, chandlerc, sanjoy, davide, grosser, brzycki

Reviewed By: davide

Subscribers: grandinj, zhendongsu, llvm-commits, david2050

Differential Revision: https://reviews.llvm.org/D35869

llvm-svn: 311467
 2017-08-22 16:30:21 +00:00
Sanjoy Das 08a38fe71e Revert "Reapply: [ADCE][Dominators] Teach ADCE to preserve dominators" 
Summary: This partially reverts commit r311057 since it breaks ADCE.  See PR34258.

Reviewers: kuhar

Subscribers: mcrosier, david2050, llvm-commits

Differential Revision: https://reviews.llvm.org/D36979

llvm-svn: 311381
 2017-08-21 20:39:18 +00:00
Jakub Kuderski fd5c5c9144 Reapply: [ADCE][Dominators] Teach ADCE to preserve dominators 
Summary:
This patch teaches ADCE to preserve both DominatorTrees and PostDominatorTrees.

I didn't notice any performance impact when bootstrapping clang with this patch.

The patch was originally committed in r311039 and reverted in r311049.
This revision fixes the problem with not adding a dependency on the
DominatorTreeWrapperPass for the LegacyPassManager.

Reviewers: dberlin, chandlerc, sanjoy, davide, grosser, brzycki

Reviewed By: davide

Subscribers: grandinj, zhendongsu, llvm-commits, david2050

Differential Revision: https://reviews.llvm.org/D35869

llvm-svn: 311057
 2017-08-17 01:41:49 +00:00
Jakub Kuderski cbcffb173c Revert "[ADCE][Dominators] Teach ADCE to preserve dominators" 
This reverts commit r311039. The patch caused the
`test/Bindings/OCaml/Output/scalar_opts.ml` to fail.

llvm-svn: 311049
 2017-08-16 22:10:53 +00:00
Jakub Kuderski 4552e9de9f [ADCE][Dominators] Teach ADCE to preserve dominators 
Summary:
This patch teaches ADCE to preserve both DominatorTrees and PostDominatorTrees.

I didn't notice any performance impact when bootstrapping clang with this patch.

Reviewers: dberlin, chandlerc, sanjoy, davide, grosser, brzycki

Reviewed By: davide

Subscribers: grandinj, zhendongsu, llvm-commits, david2050

Differential Revision: https://reviews.llvm.org/D35869

llvm-svn: 311039
 2017-08-16 20:50:23 +00:00