This reverts commit 764d9aa97905f202385b4f25f8d234630b4feef3.
This patch exposed a few additional cases where SCEV expressions are not
properly invalidated.
See PR52024, PR52023.
This reverts commit 8fdac7cb7abbeeaed016ef9eb7a087458e41e33f.
The issue causing the revert has been fixed a while ago in 60b852092c98.
Original message:
Now that SCEVExpander can preserve LCSSA form,
we do not have to worry about LCSSA form when
trying to look through PHIs. SCEVExpander will take
care of inserting LCSSA PHI nodes as required.
This increases precision of the analysis in some cases.
Reviewed By: mkazantsev, bmahjour
Differential Revision: https://reviews.llvm.org/D71539
Only tests in llvm/test/Analysis.
-analyze is legacy PM-specific.
This only touches files with `-passes`.
I looked through everything and made sure that everything had a new PM equivalent.
Reviewed By: MaskRay
Differential Revision: https://reviews.llvm.org/D109040
D104806 broke some uses of getMinusSCEV() in DependenceAnalysis:
subtraction with different pointer bases returns a SCEVCouldNotCompute.
Make sure we avoid cases involving such subtractions.
Differential Revision: https://reviews.llvm.org/D106099
