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Re: [GCC BACKPORT]Backport revision 254777 and 254778 to GCC 7 branch
- From: Richard Biener <richard dot guenther at gmail dot com>
- To: Bin Cheng <Bin dot Cheng at arm dot com>
- Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, nd <nd at arm dot com>
- Date: Tue, 19 Dec 2017 16:16:21 +0100
- Subject: Re: [GCC BACKPORT]Backport revision 254777 and 254778 to GCC 7 branch
- Authentication-results: sourceware.org; auth=none
- References: <DB5PR0801MB2742D498CD2498BBDE9CDF91E70F0@DB5PR0801MB2742.eurprd08.prod.outlook.com>
On Tue, Dec 19, 2017 at 4:15 PM, Bin Cheng <Bin.Cheng@arm.com> wrote:
> Hi,
> This patch backports revision 254777 and 254778 to GCC 7 branch.
> Bootstrap and test on x86_64. Is it OK?
Ok.
Richard.
> Thanks,
> bin
>
> 2017-12-18 Bin Cheng <bin.cheng@arm.com>
>
> Backport from mainline
> 2017-11-15 Bin Cheng <bin.cheng@arm.com>
>
> PR tree-optimization/82726
> PR tree-optimization/70754
> * tree-predcom.c (order_drefs_by_pos): New function.
> (combine_chains): Move code setting has_max_use_after to...
> (try_combine_chains): ...here. New parameter. Sort combined chains
> according to position information.
> (tree_predictive_commoning_loop): Update call to above function.
> (update_pos_for_combined_chains, pcom_stmt_dominates_stmt_p): New.
>
> 2017-11-15 Bin Cheng <bin.cheng@arm.com>
>
>
> 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.
>
> gcc/testsuite
> 2017-12-18 Bin Cheng <bin.cheng@arm.com>
>
> Backport from mainline
> 2017-11-15 Bin Cheng <bin.cheng@arm.com>
>
> PR tree-optimization/82726
> * gcc.dg/tree-ssa/pr82726.c: New test.