Commit Graph

2 Commits

Author SHA1 Message Date
Aditya Kumar 1f90cae80f [GVNHoist] Fix: PR35222 gvn-hoist incorrectly erases load in case of a loop
Reviewers:
    dberlin
    sebpop
    eli.friedman

Differential Revision: https://reviews.llvm.org/D41453

llvm-svn: 321789
2018-01-04 07:47:24 +00:00
Aditya Kumar 49c03b11df [GVNHoist] Fix: PR35222 gvn-hoist incorrectly erases load
w.r.t. the paper
"A Practical Improvement to the Partial Redundancy Elimination in SSA Form"
(https://sites.google.com/site/jongsoopark/home/ssapre.pdf)

Proper dominance check was missing here, so having a loopinfo should not be required.
Committing this diff as this fixes the bug, if there are
further concerns, I'll be happy to work on them.

Differential Revision: https://reviews.llvm.org/D39781

llvm-svn: 320607
2017-12-13 19:40:07 +00:00