git.ipfire.org Git - thirdparty/gcc.git/commit

2019-10-24 Richard Biener <rguenther@suse.de>

* tree-vect-slp.c (vect_get_and_check_slp_defs): For reduction
chains try harder with operand swapping and instead of
putting a shifted chain into the reduction operands put
a repetition of the final reduction op there as if we'd
reassociate the expression.

* gcc.dg/vect/slp-reduc-10a.c: New testcase.
* gcc.dg/vect/slp-reduc-10b.c: Likewise.
* gcc.dg/vect/slp-reduc-10c.c: Likewise.
* gcc.dg/vect/slp-reduc-10d.c: Likewise.
* gcc.dg/vect/slp-reduc-10e.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@277406 138bc75d-0d04-0410-961f-82ee72b054a4

author	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Thu, 24 Oct 2019 15:01:45 +0000 (15:01 +0000)
committer	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Thu, 24 Oct 2019 15:01:45 +0000 (15:01 +0000)
commit	cddd8a3c8f2efa530a9b507ce94b8f33884443df
tree	575af1eed28449217962628ae5ea192898d39358	tree
parent	3ad8baf17485f972ffaec9545aee0b7b6d9b584f	commit \| diff

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gcc.dg/vect/slp-reduc-10a.c	[new file with mode: 0644]	blob
gcc/testsuite/gcc.dg/vect/slp-reduc-10b.c	[new file with mode: 0644]	blob
gcc/testsuite/gcc.dg/vect/slp-reduc-10c.c	[new file with mode: 0644]	blob
gcc/testsuite/gcc.dg/vect/slp-reduc-10d.c	[new file with mode: 0644]	blob
gcc/testsuite/gcc.dg/vect/slp-reduc-10e.c	[new file with mode: 0644]	blob
gcc/tree-vect-slp.c		diff \| blob \| blame \| history