[Bug middle-end/91272] [SVE] Use fully-masked loops for CLASTB reductions

[prathamesh3492 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91272

--- Comment #1 from prathamesh3492 at gcc dot gnu.org ---
Author: prathamesh3492
Date: Mon Oct 28 14:50:58 2019
New Revision: 277524

URL: https://gcc.gnu.org/viewcvs?rev=277524&root=gcc&view=rev
Log:
2019-10-28  Prathamesh Kulkarni  <prathamesh.kulka...@linaro.org>

        PR middle-end/91272
        * tree-vect-stmts.c (vectorizable_condition): Support
        EXTRACT_LAST_REDUCTION with fully-masked loops.

testsuite/
        * gcc.target/aarch64/sve/clastb_1.c: Add dg-scan.
        * gcc.target/aarch64/sve/clastb_2.c: Likewise.
        * gcc.target/aarch64/sve/clastb_3.c: Likewise.
        * gcc.target/aarch64/sve/clastb_4.c: Likewise.
        * gcc.target/aarch64/sve/clastb_5.c: Likewise.
        * gcc.target/aarch64/sve/clastb_6.c: Likewise.
        * gcc.target/aarch64/sve/clastb_7.c: Likewise.
        * gcc.target/aarch64/sve/clastb_8.c: Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_1.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_2.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_3.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_4.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_5.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_6.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_7.c
    trunk/gcc/testsuite/gcc.target/aarch64/sve/clastb_8.c
    trunk/gcc/tree-vect-stmts.c