PR tree-optimization/82726
commitb63803a89bf4f769bcb2a2b19dde8efbc2e968d1
authoramker <amker@138bc75d-0d04-0410-961f-82ee72b054a4>
Wed, 15 Nov 2017 16:16:49 +0000 (15 16:16 +0000)
committeramker <amker@138bc75d-0d04-0410-961f-82ee72b054a4>
Wed, 15 Nov 2017 16:16:49 +0000 (15 16:16 +0000)
treea9808ca5cd5b47ade2392e27afa99a69d1f0ecb7
parentd0ec0d75fb73b7f64e261e25f7c858655a64dd57
PR tree-optimization/82726
Revert
2017-01-23  Bin Cheng  <bin.cheng@arm.com>

PR tree-optimization/70754
* tree-predcom.c (stmt_combining_refs): New parameter INSERT_BEFORE.
(reassociate_to_the_same_stmt): New parameter INSERT_BEFORE.  Insert
combined stmt before it if not NULL.
(combine_chains): Process refs reversely and compute dominance point
for root ref.

Revert
2017-02-23  Bin Cheng  <bin.cheng@arm.com>

PR tree-optimization/79663
* tree-predcom.c (combine_chains): Process refs in reverse order
only for ZERO length chains, and add explaining comment.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254777 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/tree-predcom.c