[Bug lto/83338] [8 Regression] SPEC CPU2017 510.parest_r ICE

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83338

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Dec  9 11:43:31 2017
New Revision: 255523

URL: https://gcc.gnu.org/viewcvs?rev=255523&root=gcc&view=rev
Log:
        PR tree-optimization/83338
        * tree-vect-stmts.c (vectorizable_operation): Handle POINTER_DIFF_EXPR
        vectorization as MINUS_EXPR with a subsequent VIEW_CONVERT_EXPR from
        vector of unsigned integers to vector of signed integers.

        * gcc.dg/vect/pr83338.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr83338.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-stmts.c